PDT006A0X3-SRZ [LINEAGEPOWER]

6A Digital Pico DLynxTM: Non-Isolated DC-DC Power Modules 3Vdc ––14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A Output Current; 6A数码微微DLynxTM :非隔离DC-DC电源模块有3Vdc  ?? - 答???? 14.4VDC输入; 0.45Vdc至5.5VDC输出; 6A输出电流
PDT006A0X3-SRZ
型号: PDT006A0X3-SRZ
厂家: LINEAGE POWER CORPORATION    LINEAGE POWER CORPORATION
描述:

6A Digital Pico DLynxTM: Non-Isolated DC-DC Power Modules 3Vdc ––14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A Output Current
6A数码微微DLynxTM :非隔离DC-DC电源模块有3Vdc  ?? - 答???? 14.4VDC输入; 0.45Vdc至5.5VDC输出; 6A输出电流

电源电路
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Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-Isolated DC-DC Power Modules  
3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A Output Current  
Features  
ƒ
Compliant to RoHS EU Directive 2002/95/EC (Z  
versions)  
ƒ
Compatible in a Pb-free or SnPb reflow  
environment (Z versions)  
ƒ
ƒ
ƒ
DOSA based  
Wide Input voltage range (3Vdc-14.4Vdc)  
Output voltage programmable from 0.6Vdc to  
5.5Vdc via external resistor. Digitally adjustable  
down to 0.45Vdc  
ƒ
ƒ
Digital interface through the PMBusTM # protocol  
RoHS Compliant  
Applications  
Tunable LoopTM to op timize dynamic output  
voltage response  
ƒ
Flexible output voltage sequencing EZ-  
SEQUENCE  
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Distributed power architectures  
Intermediate bus voltage applications  
Telecommunications equipment  
Servers and storage applications  
Networking equipment  
ƒ
ƒ
Power Good signal  
Fixed switching frequency with capability of  
external synchronization  
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Output overcurrent protection (non-latching)  
Overtemperature protection  
Remote On/Off  
Industrial equipment  
Vin+  
Vout+  
VIN  
VOUT  
VS+  
Ability to sink and source current  
Cost efficient open frame design  
PGOOD  
RTUNE  
CTUNE  
MODULE  
SEQ  
Small size: 12.2 mm x 12.2 mm x 7.25 mm  
(0.48 in x 0.48 in x 0.29 in)  
CLK  
Cin  
TRIM  
Co  
DATA  
ADDR0  
ADDR1  
SMBALRT#  
RTrim  
ƒ
ƒ
Wide operating temperature range [-40°C to 85°C]  
†
ON/OFF  
RADDR1  
RADDR0  
UL* 60950-1Recognized, CSA C22.2 No.  
‡
SIG_GND  
60950-1-03 Certified, and VDE 0805:2001-12  
SYNC  
GND VS-  
(EN60950-1) Licensed  
GND  
ƒ
ISO** 9001 and ISO 14001 certified manufacturing  
facilities  
Description  
The 6A Digital Pico DLynxTM power modules are non-isolated dc-dc converters that deliver up to 6A of output  
current. These modules operate over a wide range of input voltage (VIN = 3Vdc-14.4Vdc) and provide a precisely  
regulated output voltage from 0.45Vdc to 5.5Vdc, programmable via an external resistor and further adjustable  
through PMBus. Features include a digital interface using the PMBus protocol, remote On/Off, adjustable output  
voltage, over current and overtemperature protection. The PMBus interface supports a range of commands to control  
and monitor the module. The Tunable LoopTM feature allows the user to optimize the dynamic response of the  
converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area.  
*
UL is a registered trademark of Underwriters Laboratories, Inc.  
CSA is a registered trademark of Canadian Standards Association.  
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.  
†
‡
** ISO is a registered trademark of the International Organization of Standards  
# The PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF)  
Document No: DS11-008 ver. 0.33  
PDF name: PDT006A0X.pdf  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Absolute Maximum Ratings  
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are  
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in  
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for  
extended periods can adversely affect the device reliability.  
Parameter  
Device  
Symbol  
Min  
Max  
Unit  
Input Voltage  
All  
VIN  
-0.3  
15  
V
Continuous  
SEQ, SYNC, VS+  
All  
All  
All  
7
V
V
CLK, DATA, SMBALERT  
Operating Ambient Temperature  
(see Thermal Considerations section)  
Storage Temperature  
3.6  
85  
TA  
-40  
-55  
°C  
All  
Tstg  
125  
°C  
Electrical Specifications  
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature  
conditions.  
Parameter  
Device  
Symbol  
Min  
Typ  
Max  
Unit  
Operating Input Voltage  
Maximum Input Current  
(VIN=3V to 14V, IO=IO, max  
All  
All  
VIN  
3
14.4  
5
Vdc  
Adc  
IIN,max  
)
V
O,set = 0.6 Vdc  
IIN,No load  
IIN,No load  
30  
90  
mA  
mA  
Input No Load Current  
(VIN = 12Vdc, IO = 0, module enabled)  
VO,set = 5Vdc  
Input Stand-by Current  
(VIN = 12Vdc, module disabled)  
All  
All  
IIN,stand-by  
I2t  
6
mA  
A2s  
Inrush Transient  
1
Input Reflected Ripple Current, peak-to-peak  
(5Hz to 20MHz, 1ȝH source impedance; VIN =0 to  
14V, IO= IOmax ; See Test Configurations)  
All  
All  
11.2  
-55  
mAp-p  
dB  
Input Ripple Rejection (120Hz)  
LINEAGE POWER  
2
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Electrical Specifications (continued)  
Parameter  
Device  
Symbol  
Min  
Typ  
Max  
Unit  
Output Voltage Set-point (with 0.1% tolerance for  
external resistor used to set output voltage)  
All  
VO, set  
-1.0  
+1.0  
% VO, set  
Output Voltage (Over all operating input voltage, resistive  
load, and temperature conditions until end of life)  
All  
All  
VO, set  
-3.0  
0.6  
+3.0  
% VO, set  
Vdc  
Adjustment Range (selected by an external resistor)  
(Some output voltages may not be possible depending  
on the input voltage – see Feature Descriptions Section)  
VO  
5.5  
PMBus Adjustable Output Voltage Range  
PMBus Output Voltage Adjustment Step Size  
Remote Sense Range  
All  
All  
All  
VO,adj  
-25  
0.4  
0
+25  
%VO,set  
%VO,set  
Vdc  
0.5  
Output Regulation (for VO • 2.5Vdc)  
Line (VIN=VIN, min to VIN, max  
Load (IO=IO, min to IO, max  
Output Regulation (for VO < 2.5Vdc)  
Line (VIN=VIN, min to VIN, max  
Load (IO=IO, min to IO, max  
Temperature (Tref=TA, min to TA, max  
)
All  
All  
+0.4  
10  
% VO, set  
mV  
)
)
All  
All  
All  
5
mV  
mV  
)
10  
0.4  
)
% VO, set  
Output Ripple and Noise on nominal output  
(VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1ȝF // 22 ȝF  
ceramic capacitors)  
Peak-to-Peak (5Hz to 20MHz bandwidth)  
RMS (5Hz to 20MHz bandwidth)  
External Capacitance1  
All  
All  
50  
20  
100  
38  
mVpk-pk  
mVrms  
Without the Tunable LoopTM  
ESR • 1 mȍ  
With the Tunable LoopTM  
All  
CO, max  
22  
47  
ȝF  
ESR • 0.15 mȍ  
All  
All  
All  
CO, max  
CO, max  
Io  
22  
22  
0
1000  
3000  
6
ȝF  
ȝF  
ESR • 10 mȍ  
Output Current (in either sink or source mode)  
Adc  
Output Current Limit Inception (Hiccup Mode)  
(current limit does not operate in sink mode)  
All  
All  
IO, lim  
IO, s/c  
200  
367  
% Io,max  
mArms  
Output Short-Circuit Current  
(VO”250mV) ( Hiccup Mode )  
Efficiency  
VO,set = 0.6Vdc  
VO, set = 1.2Vdc  
VO,set = 1.8Vdc  
VO,set = 2.5Vdc  
VO,set = 3.3Vdc  
VO,set = 5.0Vdc  
All  
Ș
Ș
75.6  
85.0  
88.6  
90.6  
92.1  
93.8  
600  
%
%
VIN= 12Vdc, TA=25°C  
IO=IO, max , VO= VO,set  
Ș
%
Ș
%
Ș
%
Ș
%
Switching Frequency  
fsw  
kHz  
1 External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as  
getting the best transient response. See the Tunable LoopTM section for details.  
LINEAGE POWER  
3
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Electrical Specifications (continued)  
Parameter  
Device  
Symbol  
Min  
Typ  
Max  
Unit  
Frequency Synchronization  
Synchronization Frequency Range  
High-Level Input Voltage  
Low-Level Input Voltage  
Input Current, SYNC  
All  
All  
All  
All  
All  
All  
All  
510  
2.0  
720  
kHz  
V
VIH  
VIL  
0.4  
V
ISYNC  
tSYNC  
tSYNC_SH  
100  
nA  
ns  
ns  
Minimum Pulse Width, SYNC  
Maximum SYNC rise time  
100  
100  
General Specifications  
Parameter  
Device  
All  
Min  
Typ  
Max  
Unit  
Calculated MTBF (IO=0.8IO, max, TA=40°C) Telecordia Issue 2  
Method 1 Case 3  
18,595,797  
TBD  
Hours  
g (oz.)  
Weight  
Feature Specifications  
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature  
conditions. See Feature Descriptions for additional information.  
Parameter  
Device  
Symbol  
Min  
Typ  
Max  
Unit  
On/Off Signal Interface  
(VIN=VIN, min to VIN, max ; open collector or equivalent,  
Signal referenced to GND)  
Device code with suffix “4” – Positive Logic (See Ordering  
Information)  
Logic High (Module ON)  
Input High Current  
All  
All  
IIH  
1
mA  
V
Input High Voltage  
Logic Low (Module OFF)  
Input Low Current  
VIH  
2
VIN,max  
All  
All  
IIL  
1
mA  
V
Input Low Voltage  
VIL  
-0.2  
0.6  
Device Code with no suffix – Negative Logic (See Ordering  
Information)  
(On/OFF pin is open collector/drain logic input with  
external pull-up resistor; signal referenced to GND)  
Logic High (Module OFF)  
Input High Current  
All  
All  
IIH  
ʊ
ʊ
ʊ
1
mA  
Input High Voltage  
VIH  
2.0  
VIN, max  
Vdc  
Logic Low (Module ON)  
Input low Current  
All  
All  
IIL  
ʊ
ʊ
ʊ
10  
ȝA  
Input Low Voltage  
VIL  
-0.2  
0.6  
Vdc  
LINEAGE POWER  
4
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Feature Specifications (cont.)  
Parameter  
Device  
Symbol  
Min  
Typ  
Max  
Units  
Turn-On Delay and Rise Times  
(VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state)  
Case 1: On/Off input is enabled and then input power is  
applied (delay from instant at which VIN = VIN, min until Vo =  
10% of Vo, set)  
All  
Tdelay  
ʊ
0.4  
ʊ
msec  
Case 2: Input power is applied for at least one second and  
then the On/Off input is enabled (delay from instant at  
which Von/Off is enabled until Vo = 10% of Vo, set)  
All  
All  
Tdelay  
Trise  
ʊ
ʊ
0.8  
2.2  
ʊ
ʊ
msec  
msec  
Output voltage Rise time (time for Vo to rise from  
10% of Vo, set to 90% of Vo, set)  
Output voltage overshoot (TA = 25oC  
VIN= VIN, min to VIN, max,IO = IO, min to IO, max  
)
3.0  
% VO, set  
With or without maximum external capacitance  
Over Temperature Protection  
(See Thermal Considerations section)  
All  
Tref  
TBD  
130  
°C  
PMBus Over Temperature Warning Threshold  
All  
All  
All  
TWARN  
°C  
mV  
mV  
Tracking Accuracy  
(Power-Up: 2V/ms)  
VSEQ –Vo  
VSEQ –Vo  
100  
100  
(Power-Down: 2V/ms)  
(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)  
Input Undervoltage Lockout  
Turn-on Threshold  
All  
All  
All  
All  
All  
2.79  
2.58  
0.2  
Vdc  
Vdc  
Vdc  
Vdc  
mV  
Turn-off Threshold  
Hysteresis  
PMBus Adjustable Input Under Voltage Lockout Thresholds  
Resolution of Adjustable Input Under Voltage Threshold  
PGOOD (Power Good)  
2.5  
14  
500  
Signal Interface Open Drain, Vsupply 5VDC  
Overvoltage threshold for PGOOD ON  
Overvoltage threshold for PGOOD OFF  
Undervoltage threshold for PGOOD ON  
Undervoltage threshold for PGOOD OFF  
Pulldown resistance of PGOOD pin  
All  
All  
All  
All  
All  
All  
108  
105  
110  
90  
%VO, set  
%VO, set  
%VO, set  
%VO, set  
50  
5
Sink current capability into PGOOD pin  
mA  
LINEAGE POWER  
5
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Digital Interface Specifications  
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature  
conditions. See Feature Descriptions for additional information.  
Parameter  
Conditions  
Symbol  
Min  
Typ  
Max  
Unit  
PMBus Signal Interface Characteristics  
Input High Voltage (CLK, DATA)  
VIH  
VIL  
IIH  
2.1  
3.6  
0.8  
10  
V
V
Input Low Voltage (CLK, DATA)  
ʅA  
ʅA  
V
Input high level current (CLK, DATA)  
Input low level current (CLK, DATA)  
Output Low Voltage (CLK, DATA, SMBALERT#)  
-10  
-10  
IIL  
10  
IOUT=2mA  
VOUT=3.6V  
VOL  
0.4  
Output high level open drain leakage current  
(DATA, SMBALERT#)  
ʅA  
IOH  
0
10  
Pin capacitance  
CO  
0.7  
pF  
PMBus Operating frequency range  
Data hold time  
Slave Mode  
FPMB  
10  
400  
kHz  
Receive Mode  
Transmit Mode  
0
tHD:DAT  
tSU:DAT  
ns  
ns  
300  
Data setup time  
250  
Measurement System Characteristics  
Read delay time  
tDLY  
IRNG  
153  
0
192  
231  
18  
ȝs  
A
Output current measurement range  
Output current measurement resolution  
Output current measurement gain accuracy  
Output current measurement offset  
62.5  
mA  
%
IRES  
±5  
0.1  
5.5  
IACC  
A
IOFST  
VOUT measurement range  
0
V
VOUT(rng)  
VOUT(res)  
VOUT(gain)  
VOUT(ofst)  
VIN(rng)  
VIN(res)  
VIN(gain)  
VIN(ofst)  
VOUT measurement resolution  
16.25  
32.5  
mV  
LSB  
LSB  
V
VOUT measurement gain accuracy  
VOUT measurement offset  
-2  
-3  
0
2
3
VIN measurement range  
14.4  
VIN measurement resolution  
mV  
LSB  
LSB  
VIN measurement gain accuracy  
VIN measurement offset  
-2  
2
-5.5  
1.4  
LINEAGE POWER  
6
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 0.6Vo and 25oC.  
85  
6.0  
80  
NC  
5.0  
4.0  
3.0  
2.0  
1.0  
Vin=3.3V  
75  
70  
65  
60  
55  
50  
100  
200  
NC  
Standard Part  
2m/s  
300  
(85C)  
(400LFM)  
400  
Vin=14V  
NC  
100  
Vin=12V  
Ruggedized (D)  
300  
200  
Part (105C)  
400  
0
1
2
3
4
5
6
75  
80  
85  
90  
95  
100  
105  
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 2. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 1. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 4. Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout=1x47uF +  
4x330uF, CTune=33nF, RTune=178  
Figure 3. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 5. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 6. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
7
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 1.2Vo and 25oC.  
95  
6.0  
90  
85  
5.0  
4.0  
3.0  
2.0  
1.0  
NC  
2m/s  
80  
75  
70  
65  
60  
55  
50  
Vin=3.3V  
100  
200  
NC  
Standard Part  
300  
(400LFM)  
Vin=14V  
(85C)  
400  
Vin=12V  
NC  
100  
200  
Ruggedized (D)  
300  
Part (105C)  
400  
0
1
2
3
4
5
6
75  
80  
85  
90  
95  
100  
105  
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 8. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 7. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 10. Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout=1x47uF +  
2x330uF, CTune=12nF, RTune=178  
Figure 9. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 1. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 12. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
8
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 1.8Vo and 25oC.  
95  
6.0  
90  
5.0  
NC  
Vin=3.3V  
NC  
100  
200  
85  
80  
75  
70  
2m/s  
(400LFM)  
4.0  
3.0  
2.0  
1.0  
Standard Part  
300  
Vin=14V  
(85C)  
400  
Vin=12V  
100  
200  
NC  
Ruggedized (D)  
300  
Part (105C)  
400  
75  
80  
85  
90  
95  
100  
105  
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 14. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 13. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 16. Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout= 1x47uF +  
1x330uF, CTune=4700pF, RTune=178  
Figure 15. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 17. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 18. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
9
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 2.5Vo and 25oC.  
95  
6.0  
90  
100  
200  
NC  
300  
Vin=4.5V  
5.0  
4.0  
3.0  
2.0  
1.0  
Standard Part  
(85C)  
NC  
85  
80  
75  
70  
400  
Vin=14V  
Vin=12V  
2m/s  
(400LFM)  
NC  
100  
200  
Ruggedized (D)  
300  
Part (105C)  
400  
75  
80  
85  
90  
95  
100  
105  
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 20. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 19. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 22. Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout = 3x47uF,  
CTune=3300pF, RTune=178  
Figure 21. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 23. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 24. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
10  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 3.3Vo and 25oC.  
100  
6.0  
95  
100  
200  
NC  
300  
NC  
5.0  
4.0  
3.0  
2.0  
1.0  
Standard  
90  
85  
80  
75  
70  
Part (85C)  
Vin=4.5V  
400  
2m/s  
(400LFM)  
Vin=14V  
Vin=12V  
NC  
100  
200  
Ruggedized (D)  
Part (105C)  
300  
400  
0
1
2
3
4
5
6
75  
80  
85  
90  
95  
100  
105  
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 26. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 25. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 28 Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout= 3x47uF,  
CTune=3300pF, RTune=178  
Figure 27. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 29. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 30. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
11  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Characteristic Curves  
The following figures provide typical characteristics for the 6A Digital Pico DLynxTM at 5Vo and 25oC.  
100  
6.0  
95  
100  
200  
NC  
300  
5.0  
4.0  
3.0  
2.0  
1.0  
NC  
90  
85  
80  
75  
70  
Standard  
400  
Vin=7V  
Part (85C)  
Vin=14V  
Vin=12V  
0.5m/s  
(100LFM)  
NC 100  
300  
200  
Ruggedized (D)  
Part (105C)  
400  
75  
80  
85  
90  
95  
100  
105  
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)  
AMBIENT TEMPERATURE, TA OC  
Figure 32. Derating Output Current versus Ambient  
Temperature and Airflow.  
Figure 31. Converter Efficiency versus Output Current.  
TIME, t (1µs/div)  
TIME, t (20µs /div)  
Figure 34. Transient Response to Dynamic Load  
Change from 50% to 100% at 12Vin, Cout= 2x47uF,  
CTune=2200pF, RTune=261  
Figure 33. Typical output ripple and noise (CO=22ʅF  
ceramic, VIN = 12V, Io = Io,max, ).  
TIME, t (2ms/div)  
TIME, t (2ms/div)  
Figure 35. Typical Start-up Using On/Off Voltage (Io =  
Io,max).  
Figure 36. Typical Start-up Using Input Voltage (VIN =  
12V, Io = Io,max).  
LINEAGE POWER  
12  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
achieved by using the Tunable LoopTM feature described  
later in this data sheet.  
Design Considerations  
Input Filtering  
The 6A Digital Pico DLynxTM module should be  
connected to a low ac-impedance source. A highly  
inductive source can affect the stability of the module.  
An input capacitance must be placed directly adjacent  
to the input pin of the module, to minimize input ripple  
voltage and ensure module stability.  
40  
30  
20  
10  
0
1x22uFExt Cap  
1x47uFExt Cap  
2x47uFExt Cap  
To minimize input voltage ripple, ceramic capacitors  
are recommended at the input of the module. Figure  
37 shows the input ripple voltage for various output  
voltages at 6A of load current with 1x22 µF or 2x22  
µF ceramic capacitors and an input of 12V.  
190  
180  
170  
1x22uF  
2x22uF  
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
160  
150  
140  
130  
120  
110  
100  
90  
Output Voltage(Volts)  
Figure 38. Output ripple voltage for various output  
voltages with external 1x22 µF, 1x47 µF, or 2x47 µF  
ceramic capacitors at the output (6A load). Input  
voltage is 12V.  
Safety Considerations  
For safety agency approval the power module must be  
installed in compliance with the spacing and separation  
requirements of the end-use safety agency standards,  
i.e., UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN  
EN 60950-1:2006 + A11 (VDE0805 Teil 1 + A11):2009-  
11; EN 60950-1:2006 + A11:2009-03.  
80  
70  
0.5  
1.5  
2.5  
3.5  
4.5  
Output Voltage(Volts)  
Figure 37. Input ripple voltage for various output  
voltages with 1x22 µF or 2x22 µF ceramic  
capacitors at the input (6A load). Input voltage is  
12V.  
For the converter output to be considered meeting the  
requirements of safety extra-low voltage (SELV), the  
input must meet SELV requirements. The power  
module has extra-low voltage (ELV) outputs when all  
inputs are ELV.  
Output Filtering  
These modules are designed for low output ripple  
voltage and will meet the maximum output ripple  
specification with 0.1 µF ceramic and 22 µF ceramic  
capacitors at the output of the module. However,  
additional output filtering may be required by the system  
designer for a number of reasons. First, there may be a  
need to further reduce the output ripple and noise of the  
module. Second, the dynamic response characteristics  
may need to be customized to a particular load step  
change.  
The input to these units is to be provided with a fuse  
with a maximum rating of TBD in the positive input lead.  
To reduce the output ripple and improve the dynamic  
response to a step load change, additional capacitance  
at the output can be used. Low ESR polymer and  
ceramic capacitors are recommended to improve the  
dynamic response of the module. Figure 38 provides  
output ripple information for different external  
capacitance values at various Vo and a full load current  
of 6A. For stable operation of the module, limit the  
capacitance to less than the maximum output  
capacitance as specified in the electrical specification  
table. Optimal performance of the module can be  
LINEAGE POWER  
13  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Analog Feature Descriptions  
DLYNX MODULE  
+3.3V  
+VIN  
Remote On/Off  
The module can be turned ON and OFF either by using  
the ON/OFF pin (Analog interface) or through the  
PMBus interface (Digital). The module can be  
configured in a number of ways through the PMBus  
interface to react to the two ON/OFF inputs:  
Rpullup  
I
10K  
ENABLE  
22K  
ON/OFF  
Q1  
+
Module ON/OFF can be controlled only  
through the analog interface (digital interface  
ON/OFF commands are ignored)  
Module ON/OFF can be controlled only  
through the PMBus interface (analog interface  
is ignored)  
Q2  
V
22K  
ON/OFF  
_
GND  
Module ON/OFF can be controlled by either  
the analog or digital interface  
Figure 39. Circuit configuration for using positive  
On/Off logic.  
The default state of the module (as shipped from the  
factory) is to be controlled by the analog interface only. If  
the digital interface is to be enabled, or the module is to  
be controlled only through the digital interface, this  
change must be made through the PMBus. These  
changes can be made and written to non-volatile  
memory on the module so that it is remembered for  
subsequent use.  
DLYNX MODULE  
+3.3V  
+VIN  
Rpullup  
I
10K  
ENABLE  
ON/OFF  
22K  
Analog On/Off  
Q1  
+
The 6A Digital Pico DLynxTM power modules feature an  
On/Off pin for remote On/Off operation. Two On/Off  
logic options are available. In the Positive Logic On/Off  
option, (device code suffix “4” – see Ordering  
Q2  
V
22K  
ON/OFF  
Information), the module turns ON during a logic High on  
the On/Off pin and turns OFF during a logic Low. With  
the Negative Logic On/Off option, (no device code suffix,  
see Ordering Information), the module turns OFF during  
logic High and ON during logic Low. The On/Off signal  
should be always referenced to ground. For either  
On/Off logic option, leaving the On/Off pin disconnected  
will turn the module ON when input voltage is present.  
_
GND  
Figure 40. Circuit configuration for using negative  
On/Off logic.  
Monotonic Start-up and Shutdown  
For positive logic modules, the circuit configuration for  
using the On/Off pin is shown in Figure 39. When the  
external transistor Q2 is in the OFF state, the internal  
transistor Q1 is turned ON, and the internal PWM  
#Enable signal is pulled low causing the module to be  
ON. When transistor Q2 is turned ON, the On/Off pin is  
pulled low and the module is OFF. A suggested value  
for Rpullup is 20k.  
The module has monotonic start-up and shutdown  
behavior for any combination of rated input voltage,  
output current and operating temperature range.  
Startup into Pre-biased Output  
The module can start into a prebiased output as long as  
the prebias voltage is 0.5V less than the set output  
voltage.  
For negative logic On/Off modules, the circuit  
configuration is shown in Fig. 40. The On/Off pin should  
be pulled high with an external pull-up resistor  
(suggested value for the 3V to 14V input range is  
20Kohms). When transistor Q2 is in the OFF state, the  
On/Off pin is pulled high, transistor Q1 is turned ON and  
the module is OFF. To turn the module ON, Q2 is turned  
ON pulling the On/Off pin low, turning transistor Q1 OFF  
resulting in the PWM Enable pin going high.  
Analog Output Voltage Programming  
The output voltage of the module is programmable to  
any voltage from 0.6dc to 5.5Vdc by connecting a  
resistor between the Trim and SIG_GND pins of the  
module. Certain restrictions apply on the output voltage  
set point depending on the input voltage. These are  
shown in the Output Voltage vs. Input Voltage Set Point  
Area plot in Fig. 41. The Upper Limit curve shows that  
for output voltages lower than 1V, the input voltage must  
be lower than the maximum of 14.4V. The Lower Limit  
curve shows that for output voltages higher than 0.6V,  
the input voltage needs to be larger than the minimum of  
3V.  
Digital On/Off  
Please see the Digital Feature Descriptions section.  
LINEAGE POWER  
14  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
VO, set (V)  
0.6  
Rtrim (Kȍ)  
Open  
40  
16  
14  
12  
0.9  
1.0  
30  
Upper  
10  
1.2  
20  
1.5  
13.33  
10  
8
6
4
2
0
1.8  
2.5  
6.316  
4.444  
2.727  
3.3  
Lower  
4
5.0  
0.5  
1
1.5  
2
2.5  
3
3.5  
4.5  
5
5.5  
6
Output Voltage (V)  
Digital Output Voltage Adjustment  
Please see the Digital Feature Descriptions section.  
Figure 41. Output Voltage vs. Input Voltage Set Point  
Area plot showing limits where the output voltage  
can be set for different input voltages.  
Remote Sense  
The power module has a Remote Sense feature to  
minimize the effects of distribution losses by regulating  
the voltage between the sense pins (VS+ and VS-). The  
voltage drop between the sense pins and the VOUT and  
GND pins of the module should not exceed 0.5V.  
VIN(+)  
VO(+)  
VS+  
Analog Voltage Margining  
ON/OFF  
Output voltage margining can be implemented in the  
module by connecting a resistor, Rmargin-up, from the Trim  
pin to the ground pin for margining-up the output voltage  
and by connecting a resistor, Rmargin-down, from the Trim  
pin to output pin for margining-down. Figure 43 shows  
the circuit configuration for output voltage margining.  
The POL Programming Tool, available at  
www.lineagepower.com under the Downloads section,  
also calculates the values of Rmargin-up and Rmargin-down for  
a specific output voltage and % margin. Please consult  
your local Lineage Power technical representative for  
additional details.  
LOAD  
TRIM  
Rtrim  
SIG_GND  
VSņ  
Caution – Do not connect SIG_GND to GND elsewhere  
in the layout  
Figure 42. Circuit configuration for programming  
output voltage using an external resistor.  
Vo  
Rmargin-down  
Without an external resistor between Trim and  
SIG_GND pins, the output of the module will be  
0.6Vdc.To calculate the value of the trim resistor, Rtrim  
for a desired output voltage, should be as per the  
following equation:  
MODULE  
Q2  
Trim  
Rmargin-up  
ª
º
12  
Vo 0.6  
Rtrim  
Rtrim =  
kΩ  
«
»
(
)
¬
¼
Q1  
Rtrim is the external resistor in kȍ  
SIG_GND  
Vo is the desired output voltage.  
Table 1 provides Rtrim values required for some  
common output voltages.  
Figure 43. Circuit Configuration for margining  
Output voltage.  
Digital Output Voltage Margining  
Please see the Digital Feature Descriptions section.  
Table 1  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
fault (see the description of the PMBus command  
VOUT_UV_FAULT_RESPONSE for additional  
information).  
Output Voltage Sequencing  
The power module includes a sequencing feature, EZ-  
SEQUENCE that enables users to implement various  
types of output voltage sequencing in their applications.  
This is accomplished via an additional sequencing pin.  
When not using the sequencing feature, leave it  
unconnected.  
Overcurrent Protection  
To provide protection in a fault (output overload)  
condition, the unit is equipped with internal  
current-limiting circuitry and can endure current limiting  
continuously. At the point of current-limit inception, the  
unit enters hiccup mode. The unit operates normally  
once the output current is brought back into its specified  
range.  
The voltage applied to the SEQ pin should be scaled  
down by the same ratio as used to scale the output  
voltage down to the reference voltage of the module.  
This is accomplished by an external resistive divider  
connected across the sequencing voltage before it is fed  
to the SEQ pin as shown in Fig. 44. In addition, a small  
capacitor (suggested value 100pF) should be connected  
across the lower resistor R1.  
Digital Adjustable Overcurrent Warning  
Please see the Digital Feature Descriptions section.  
Overtemperature Protection  
For all DLynx modules, the minimum recommended  
delay between the ON/OFF signal and the sequencing  
signal is 10ms to ensure that the module output is  
ramped up according to the sequencing signal. This  
ensures that the module soft-start routine is completed  
before the sequencing signal is allowed to ramp up.  
To provide protection in a fault condition, the unit is  
equipped with a thermal shutdown circuit. The unit will  
shut down if the overtemperature threshold of  
150oC(typ) is exceeded at the thermal reference point  
Tref .Once the unit goes into thermal shutdown it will then  
wait to cool before attempting to restart.  
DLynx Module  
Digital Temperature Status via PMBus  
Please see the Digital Feature Descriptions section.  
V
SEQ  
Digitally Adjustable Output Over and Under  
Voltage Protection  
20K  
Please see the Digital Feature Descriptions section.  
SEQ  
Input Undervoltage Lockout  
R1=Rtrim  
At input voltages below the input undervoltage lockout  
limit, the module operation is disabled. The module will  
begin to operate at an input voltage above the  
undervoltage lockout turn-on threshold.  
SIG_GND  
100 pF  
Figure 44. Circuit showing connection of the  
sequencing signal to the SEQ pin.  
Digitally Adjustable Input Undervoltage  
Lockout  
When the scaled down sequencing voltage is applied to  
the SEQ pin, the output voltage tracks this voltage until  
the output reaches the set-point voltage. The final value  
of the sequencing voltage must be set higher than the  
set-point voltage of the module. The output voltage  
follows the sequencing voltage on a one-to-one basis.  
By connecting multiple modules together, multiple  
modules can track their output voltages to the voltage  
applied on the SEQ pin.  
Please see the Digital Feature Descriptions section.  
Digitally Adjustable Power Good Thresholds  
Please see the Digital Feature Descriptions section.  
To initiate simultaneous shutdown of the modules, the  
SEQ pin voltage is lowered in a controlled manner. The  
output voltage of the modules tracks the voltages below  
their set-point voltages on a one-to-one basis. A valid  
input voltage must be maintained until the tracking and  
output voltages reach ground potential.  
Note that in all digital DLynx series of modules, the  
PMBus Output Undervoltage Fault will be tripped when  
sequencing is employed. This will be detected using the  
STATUS_WORD and STATUS_VOUT PMBus  
commands. In addition, the SMBALERT# signal will be  
asserted low as occurs for all faults and warnings. To  
avoid the module shutting down due to the Output  
Undervoltage Fault, the module must be set to continue  
operation without interruption as the response to this  
LINEAGE POWER  
16  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
External capacitors are usually added to the output of  
the module for two reasons: to reduce output ripple and  
Synchronization  
The module switching frequency can be synchronized to  
a signal with an external frequency within a specified  
range. Synchronization can be done by using the  
external signal applied to the SYNC pin of the module as  
shown in Fig. 45, with the converter being synchronized  
by the rising edge of the external signal. The Electrical  
Specifications table specifies the requirements of the  
external SYNC signal. If the SYNC pin is not used, the  
module should free run at the default switching  
frequency. If synchronization is not being used,  
connect the SYNC pin to GND.  
noise (see Figure 38) and to reduce output voltage  
deviations from the steady-state value in the presence of  
dynamic load current changes. Adding external  
capacitance however affects the voltage control loop of  
the module, typically causing the loop to slow down with  
sluggish response. Larger values of external  
capacitance could also cause the module to become  
unstable.  
The Tunable LoopTM allows the user to externally adjust  
the voltage control loop to match the filter network  
connected to the output of the module. The Tunable  
LoopTM is implemented by connecting a series R-C  
between the VS+ and TRIM pins of the module, as  
shown in Fig. 47. This R-C allows the user to externally  
adjust the voltage loop feedback compensation of the  
module.  
MODULE  
SYNC  
+
ņ
VOUT  
VS+  
GND  
RTune  
Figure 45. External source connections to  
synchronize switching frequency of the module.  
CO  
MODULE  
CTune  
Measuring Output Current, Output Voltage and  
Input Voltage  
TRIM  
Please see the Digital Feature Descriptions section.  
RTrim  
Dual Layout  
SIG_GND  
GND  
Identical dimensions and pin layout of Analog and Digital  
Pico DLynx modules permit migration from one to the  
other without needing to change the layout. To support  
this, 2 separate Trim Resistor locations have to be  
provided in the layout. As shown in Fig. 46, for the digital  
modules, the resistor is connected between the TRIM  
pad and SGND and in the case of the analog module it  
is connected between TRIM and GND.  
Figure. 47. Circuit diagram showing connection of  
TUME and CTUNE to tune the control loop of the  
R
module.  
Recommended values of RTUNE and CTUNE for different  
output capacitor combinations are given in Tables 2 and  
3. Table 3 shows the recommended values of RTUNE and  
CTUNE for different values of ceramic output capacitors  
up to 1000uF that might be needed for an application to  
meet output ripple and noise requirements. Selecting  
RTUNE and CTUNE according to Table 3 will ensure stable  
operation of the module.  
MODULE  
(PVX006 / PDT006)  
TRIM  
Rtrim1  
for  
Digital  
Rtrim2  
for  
Analog  
SIG_GND  
In applications with tight output voltage limits in the  
presence of dynamic current loading, additional output  
capacitance will be required. Table 3 lists recommended  
values of RTUNE and CTUNE in order to meet 2% output  
voltage deviation limits for some common output  
voltages in the presence of a 6A to 6A step change  
(50% of full load), with an input voltage of 12V.  
GND(Pin 7)  
Caution  
– For digital modules, do not connect  
SIG_GND to GND elsewhere in the layout  
Figure 46. Connections to support either Analog or  
Digital PicoDLynx on the same layout.  
Please contact your Lineage Power technical  
representative to obtain more details of this feature as  
well as for guidelines on how to select the right value of  
external R-C to tune the module for best transient  
performance and stable operation for other output  
capacitance values.  
Tunable LoopTM  
The module has a feature that optimizes transient  
response of the module called Tunable LoopTM  
.
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 2. General recommended values of of RTUNE  
and CTUNE for Vin=12V and various external ceramic  
capacitor combinations.  
Co  
1x47µF 2x47µF 4x47µF 6x47µF 10x47µF  
RTUNE  
CTUNE  
330  
270  
220  
180  
180  
680pF 1800pF 3300pF 4700pF 5600pF  
Table 3. Recommended values of RTUNE and CTUNE to  
obtain transient deviation of 2% of Vout for a 3A  
step load with Vin=12V.  
Vo  
5V  
2x47µF  
270  
3.3V  
2.5V  
1.8V  
1.2V  
0.6V  
1x330µF 2x330µF 4x330µF  
Polymer Polymer Polymer  
Co  
3x47µF 3x47µF  
RTUNE  
CTUNE  
V  
180  
180  
180  
180  
180  
2200pF 3300pF 3300pF 4700pF 12nF  
33nF  
76mV 48mV 47mV 33mV 18mV 10mV  
Note: The capacitors used in the Tunable Loop  
tables are 47 ȝF/3 mŸ ESR ceramic and  
330 ȝF/12 mŸ ESR polymer capacitors.  
LINEAGE POWER  
18  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
digit. The resistor values suggested for each digit are  
Digital Feature Descriptions  
shown in Table 4 (1% tolerance resistors are  
recommended). Note that if either address resistor value  
is outside the range specified in Table 4, the module will  
respond to address 127.  
PMBus Interface Capability  
The 6A Digital Pico DLynxTM power modules have a  
PMBus interface that supports both communication and  
control. The PMBus Power Management Protocol  
Specification can be obtained from www.pmbus.org. The  
modules support a subset of version 1.1 of the  
specification (see Table 6 for a list of the specific  
commands supported). Most module parameters can be  
programmed using PMBus and stored as defaults for  
later use.  
Table 4  
Digit  
Resistor Value (KŸ)  
0
1
2
3
4
5
6
7
10  
15.4  
23.7  
36.5  
54.9  
84.5  
130  
200  
All communication over the module PMBus interface  
must support the Packet Error Checking (PEC) scheme.  
The PMBus master must generate the correct PEC byte  
for all transactions, and check the PEC byte returned by  
the module.  
The user must know which I2C addresses are reserved  
in a system for special functions and set the address of  
the module to avoid interfering with other system  
operations. Both 100kHz and 400kHz bus speeds are  
supported by the module. Connection for the PMBus  
interface should follow the High Power DC specifications  
given in section 3.1.3 in the SMBus specification V2.0  
for the 400kHz bus speed or the Low Power DC  
specifications in section 3.1.2. The complete SMBus  
specification is available from the SMBus web site,  
smbus.org.  
The module also supports the SMBALERT response  
protocol whereby the module can alert the bus master if  
it wants to talk. For more information on the SMBus alert  
response protocol, see the System Management Bus  
(SMBus) specification.  
The module has non-volatile memory that is used to  
store configuration settings. Not all settings programmed  
into the device are automatically saved into this non-  
volatile memory, only those specifically identified as  
capable of being stored can be saved (see Table 6 for  
which command parameters can be saved to non-  
volatile storage).  
PMBus Data Format  
ADDR1  
ADDR0  
For commands that set thresholds, voltages or report  
such quantities, the module supports the “Linear” data  
format among the three data formats supported by  
PMBus. The Linear Data Format is a two byte value with  
an 11-bit, two’s complement mantissa and a 5-bit, two’s  
complement exponent. The format of the two data bytes  
is shown below:  
RADDR0  
RADDR1  
SIG_GND  
Figure 48. Circuit showing connection of resistors  
used to set the PMBus address of the module.  
Data Byte High  
Data Byte Low  
7 6 5 4 3  
2 1 0 7 6 5 4 3 2 1 0  
PMBus Enabled On/Off  
The module can also be turned on and off via the  
PMBus interface. The OPERATION command is used to  
actually turn the module on and off via the PMBus, while  
the ON_OFF_CONFIG command configures the  
combination of analog ON/OFF pin input and PMBus  
commands needed to turn the module on and off. Bit [7]  
in the OPERATION command data byte enables the  
module, with the following functions:  
Exponent  
MSB  
Mantissa  
MSB  
The value is of the number is then given by  
Value = Mantissa x 2 Exponent  
PMBus Addressing  
The power module can be addressed through the  
PMBus using a device address. The module has 64  
possible addresses (0 to 63 in decimal) which can be set  
using resistors connected from the ADDR0 and ADDR1  
pins to SIG_GND. Note that some of these addresses  
(0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 40 in decimal) are reserved  
according to the SMBus specifications and may not be  
useable. The address is set in the form of two octal (0 to  
7) digits, with each pin setting one digit. The ADDR1 pin  
sets the high order digit and ADDR0 sets the low order  
0
1
:
:
Output is disabled  
Output is enabled  
This module uses the lower five bits of the  
ON_OFF_CONFIG data byte to set various ON/OFF  
options as follows:  
LINEAGE POWER  
19  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Bit Position  
Access  
Function  
4
r/w  
3
r/w  
2
r/w  
1
r/w  
0
r
Table 5  
PU CMD CPR POL CPA  
Rise Time Exponent  
Mantissa  
Default Value  
1
0
1
1
1
600ʅs  
900ʅs  
1.2ms  
1.8ms  
2.7ms  
4.2ms  
6.0ms  
9.0ms  
11100  
11100  
11100  
11100  
11100  
11100  
11100  
11100  
00000001010  
00000001110  
00000010011  
00000011101  
00000101011  
00001000011  
00001100000  
00010010000  
PU: Sets the default to either operate any time input  
power is present or for the ON/OFF to be controlled by  
the analog ON/OFF input and the PMBus OPERATION  
command. This bit is used together with the CP, CMD  
and ON bits to determine startup.  
Bit Value  
Action  
Module powers up any time power is  
present regardless of state of the analog  
ON/OFF pin  
0
Output Voltage Adjustment Using the PMBus  
Module does not power up until  
commanded by the analog ON/OFF pin  
and the OPERATION command as  
programmed in bits [2:0] of the  
ON_OFF_CONFIG register.  
The VOUT_SCALE_LOOP parameter is important for a  
number of PMBus commands related to output voltage  
trimming, margining, over/under voltage protection and  
the PGOOD thresholds. The output voltage of the  
module is set as the combination of the voltage divider  
formed by RTrim and a 20kŸ upper divider resistor  
inside the module, and the internal reference voltage of  
the module. The reference voltage VREF is nominally set  
at 600mV, and the output regulation voltage is then  
given by  
1
CMD: The CMD bit controls how the device responds to  
the OPERATION command.  
Bit Value  
Action  
Module ignores the ON bit in the  
OPERATION command  
Module responds to the ON bit in the  
OPERATION command  
0
20000 + RTrim  
ª
«
º
»
VOUT  
=
×VREF  
1
RTrim  
¬
¼
Hence the module output voltage is dependent on the  
value of RTrim which is connected external to the  
module. The information on the output voltage divider  
ratio is conveyed to the module through the  
VOUT_SCALE_LOOP parameter which is calculated as  
follows:  
CPR: Sets the response of the analog ON/OFF pin. This  
bit is used together with the CMD, PU and ON bits to  
determine startup.  
Bit Value  
Action  
Module ignores the analog ON/OFF pin,  
i.e. ON/OFF is only controlled through the  
PMBUS via the OPERATION command  
Module requires the analog ON/OFF pin  
to be asserted to start the unit  
0
RTrim  
VOUT_ SCALE_ LOOP=  
20000+ RTrim  
1
The VOUT_SCALE_LOOP parameter is specified using  
the “Linear” format and two bytes. The upper five bits  
[7:3] of the high byte are used to set the exponent which  
is fixed at –9 (decimal). The remaining three bits of the  
high byte [2:0] and the eight bits of the lower byte are  
used for the mantissa. The default value of the mantissa  
is 00100000000 corresponding to 256 (decimal),  
corresponding to a divider ratio of 0.5. The maximum  
value of the mantissa is 512 corresponding to a divider  
ratio of 1. Note that the resolution of the  
PMBus Adjustable Soft Start Rise Time  
The soft start rise time can be adjusted in the module via  
PMBus. When setting this parameter, make sure that  
the charging current for output capacitors can be  
delivered by the module in addition to any load current  
to avoid nuisance tripping of the overcurrent protection  
circuitry during startup. The TON_RISE command sets  
the rise time in ms, and allows choosing soft start times  
between 600ʅs and 9ms, with possible values listed in  
Table 5. Note that the exponent is fixed at -4 (decimal)  
and the upper two bits of the mantissa are also fixed at  
0.  
VOUT_SCALE_LOOP command is 0.2%.  
When PMBus commands are used to trim or margin the  
output voltage, the value of VREF is what is changed  
inside the module, which in turn changes the regulated  
output voltage of the module.  
The nominal output voltage of the module can be  
adjusted with a minimum step size of 0.4% over a ±25%  
range from nominal using the VOUT_TRIM command  
over the PMBus.  
The VOUT_TRIM command is used to apply a fixed  
offset voltage to the output voltage command value  
LINEAGE POWER  
20  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
using the “Linear” mode with the exponent fixed at –10  
(decimal). The value of the offset voltage is given by  
at 0 while the lower five bits are programmable with a  
default value of TBD (decimal). The resolution of this  
warning limit is 500mA. The value of the  
IOUT_OC_WARN_LIMIT can be stored to non-volatile  
memory using the STORE_DEFAULT_ALL command.  
VOUT(offset) = VOUT _TRIM × 210  
This offset voltage is added to the voltage set through  
the divider ratio and nominal VREF to produce the  
trimmed output voltage. The valid range in two’s  
complement for this command is –4000h to 3999h.  
The high order two bits of the high byte must both be  
either 0 or 1. If a value outside of the +/-25% adjustment  
range is given with this command, the module will set it’s  
output voltage to the nominal value (as if VOUT_TRIM  
had been set to 0), assert SMBALRT#, set the CML bit  
in STATUS_BYTE and the invalid data bit in  
Temperature Status via PMBus  
The module can provide information related to  
temperature of the module through the  
STATUS_TEMPERATURE command. The command  
returns information about whether the pre-set over  
temperature fault threshold and/or the warning threshold  
have been exceeded.  
PMBus Adjustable Output Over and Under  
Voltage Protection  
STATUS_CML.  
The module has output over and under voltage  
protection capability. The PMBus command  
Output Voltage Margining Using the PMBus  
The module can also have its output voltage margined  
via PMBus commands. The command  
VOUT_OV_FAULT_LIMIT is used to set the output over  
voltage threshold from four possible values: 108%,  
110%, 112% or 115% of the commanded output  
voltage. The command VOUT_UV_FAULT_LIMIT sets  
the threshold that causes an output under voltage fault  
and can also be selected from four possible values:  
92%, 90%, 88% or 85%. The default values are 112%  
and 88% of commanded output voltage. Both  
commands use two data bytes formatted as two’s  
complement binary integers. The “Linear” mode is used  
with the exponent fixed to –10 (decimal) and the  
effective over or under voltage trip points given by:  
VOUT_MARGIN_HIGH sets the margin high voltage,  
while the command VOUT_MARGIN_LOW sets the  
margin low voltage. Both the VOUT_MARGIN_HIGH  
and VOUT_MARGIN_LOW commands use the “Linear”  
mode with the exponent fixed at –10 (decimal). Two  
bytes are used for the mantissa with the upper bit [7] of  
the high byte fixed at 0. The actual margined output  
voltage is a combination of the VOUT_MARGIN_HIGH  
or VOUT_MARGIN_LOW and the VOUT_TRIM values  
as shown below.  
VOUT (OV _ REQ) = (VOUT _ OV _ FAULT _ LIMIT) × 210  
VOUT (UV _ REQ) = (VOUT _UV _ FAULT _ LIMIT) × 210  
VOUT(MH)  
=
(VOUT_ MARGIN_ HIGH+VOUT_TRIM)×210  
VOUT(ML)  
=
(VOUT_ MARGIN_ LOW +VOUT_TRIM)× 210  
Note that the sum of the margin and trim voltages  
cannot be outside the ±25% window around the nominal  
output voltage. The data associated with  
VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW can  
be stored to non-volatile memory using the  
STORE_DEFAULT_ALL command.  
Values within the supported range for over and  
undervoltage detection thresholds will be set to the  
nearest fixed percentage. Note that the correct value for  
VOUT_SCALE_LOOP must be set in the module for the  
correct over or under voltage trip points to be calculated.  
In addition to adjustable output voltage protection, the  
6A Digital Pico DLynxTM module can also be  
programmed for the response to the fault. The  
VOUT_OV_FAULT RESPONSE and  
VOUT_UV_FAULT_RESPONSE commands specify the  
response to the fault. Both these commands use a  
single data byte with the possible options as shown  
below.  
The module is commanded to go to the margined high  
or low voltages using the OPERATION command. Bits  
[5:2] are used to enable margining as follows:  
00XX : Margin Off  
0101 : Margin Low (Ignore Fault)  
0110 : Margin Low (Act on Fault)  
1001 : Margin High (Ignore Fault)  
1010 : Margin High (Act on Fault)  
1. Continue operation without interruption (Bits  
[7:6] = 00, Bits [5:3] = xxx)  
2. Continue for four switching cycles and then  
shut down if the fault is still present, followed by  
no restart or continuous restart (Bits [7:6] = 01,  
Bits [5:3] = 000 means no restart, Bits [5:3] =  
111 means continuous restart)  
3. Immediate shut down followed by no restart or  
continuous restart (Bits [7:6] = 10, Bits [5:3] =  
000 means no restart, Bits [5:3] = 111 means  
continuous restart).  
PMBus Adjustable Overcurrent Warning  
The module can provide an overcurrent warning via the  
PMBus. The threshold for the overcurrent warning can  
be set using the parameter IOUT_OC_WARN_LIMIT.  
This command uses the “Linear” data format with a two  
byte data word where the upper five bits [7:3] of the high  
byte represent the exponent and the remaining three  
bits of the high byte [2:0] and the eight bits in the low  
byte represent the mantissa. The exponent is fixed at –  
1 (decimal). The upper six bits of the mantissa are fixed  
4. Module output is disabled when the fault is  
present and the output is enabled when the  
LINEAGE POWER  
21  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
fault no longer exists (Bits [7:6] = 11, Bits [5:3]  
= xxx).  
set at 1.08V. The values associated with these  
commands can be stored in non-volatile memory using  
the STORE_DEFAULT_ALL command.  
Note that separate response choices are possible for  
output over voltage or under voltage faults.  
The PGOOD terminal can be connected through a  
pullup resistor (suggested value 100K) to a source of  
5VDC or lower.  
PMBus Adjustable Input Undervoltage Lockout  
The module allows adjustment of the input under voltage  
lockout and hysteresis. The command VIN_ON allows  
setting the input voltage turn on threshold, while the  
VIN_OFF command sets the input voltage turn off  
threshold. For the VIN_ON command, possible values  
are 2.75V, and 3V to 14V in 0.5V steps. For the  
VIN_OFF command, possible values are 2.5V to 14V in  
0.5V steps. If other values are entered for either  
command, they will be mapped to the closest of the  
allowed values.  
Measurement of Output Current, Output  
Voltage and Input Voltage  
The module is capable of measuring key module  
parameters such as output current and voltage and input  
voltage and providing this information through the  
PMBus interface. Roughly every 200ȝs, the module  
makes 16 measurements each of output current, voltage  
and input voltage. Average values of of these 16  
measurements are then calculated and placed in the  
appropriate registers. The values in the registers can  
then be read using the PMBus interface.  
Both the VIN_ON and VIN_OFF commands use the  
“Linear” format with two data bytes. The upper five bits  
represent the exponent (fixed at -2) and the remaining  
11 bits represent the mantissa. For the mantissa, the  
four most significant bits are fixed at 0.  
Measuring Output Current Using the PMBus  
The module measures current by using the inductor  
winding resistance as a current sense element. The  
inductor winding resistance is then the current gain  
factor used to scale the measured voltage into a current  
reading. This gain factor is the argument of the  
IOUT_CAL_GAIN command, and consists of two bytes  
in the linear data format. The exponent uses the upper  
five bits [7:3] of the high data byte in two-s complement  
format and is fixed at –15 (decimal). The remaining 11  
bits in two’s complement binary format represent the  
mantissa. During manufacture, each module is  
calibrated by measuring and storing the current gain  
factor into non-volatile storage.  
Power Good  
The module provides a Power Good (PGOOD) signal  
that is implemented with an open-drain output to indicate  
that the output voltage is within the regulation limits of  
the power module. The PGOOD signal will be de-  
asserted to a low state if any condition such as  
overtemperature, overcurrent or loss of regulation  
occurs that would result in the output voltage going  
outside the specified thresholds. The PGOOD  
thresholds are user selectable via the PMBus (the  
default values are as shown in the Feature  
Specifications Section). Each threshold is set up  
symmetrically above and below the nominal value. The  
POWER_GOOD_ON command sets the output voltage  
level above which PGOOD is asserted (lower threshold).  
For example, with a 1.2V nominal output voltage, the  
POWER_GOOD_ON threshold can set the lower  
threshold to 1.14 or 1.1V. Doing this will automatically  
set the upper thresholds to 1.26 or 1.3V.  
The current measurement accuracy is also improved by  
each module being calibrated during manufacture with  
the offset in the current reading. The  
IOUT_CAL_OFFSET command is used to store and  
read the current offset. The argument for this command  
consists of two bytes composed of a 5-bit exponent  
(fixed at -4d) and a 11-bit mantissa. This command has  
a resolution of 62.5mA and a range of -4000mA to  
+3937.5mA.  
The POWER_GOOD_OFF command sets the level  
below which the PGOOD command is de-asserted. This  
command also sets two thresholds symmetrically placed  
around the nominal output voltage. Normally, the  
POWER_GOOD_ON threshold is set higher than the  
POWER_GOOD_OFF threshold.  
The READ_IOUT command provides module average  
output current information. This command only supports  
positive or current sourced from the module. If the  
converter is sinking current a reading of 0 is provided.  
The READ_IOUT command returns two bytes of data in  
the linear data format. The exponent uses the upper five  
bits [7:3] of the high data byte in two-s complement  
format and is fixed at –4 (decimal). The remaining 11  
bits in two’s complement binary format represent the  
mantissa with the 11th bit fixed at 0 since only positive  
numbers are considered valid.  
Both POWER_GOOD_ON and POWER_GOOD_OFF  
commands use the “Linear” format with the exponent  
fixed at –10 (decimal). The two thresholds are given by  
VOUT (PGOOD _ ON ) = (POWER _ GOOD _ ON) × 210  
VOUT (PGOOD _ OFF ) = (POWER _ GOOD _ OFF) × 210  
Both commands use two data bytes with bit [7] of the  
high byte fixed at 0, while the remaining bits are r/w and  
used to set the mantissa using two’s complement  
representation. Both commands also use the  
VOUT_SCALE_LOOP parameter so it must be set  
correctly. The default value of POWER_GOOD_ON is  
set at 1.1035V and that of the POWER_GOOD_OFF is  
Note that the current reading provided by the module is  
not corrected for temperature. The temperature  
corrected current reading for module temperature TModule  
can be estimated using the following equation  
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̴
ࢀࢁࡻ
 
ࢀࢁ
ǡ
ࡾࡾࡻ࡯
 
ሾሺ  
૚ ൅  
െ ૜૙ ൈ ૙Ǥ ૙૙૜ૢ૜  
ࡰࡺ
 
LINEAGE POWER  
22  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
VIN (Final) =  
[VIN (Initial) × (1+VIN _ CAL_ GAIN)]  
+VIN _ CAL_ OFFSET  
where IOUT_CORR is the temperature corrected value of  
the current measurement, IREAD_OUT is the module  
current measurement value, TIND is the temperature of  
the inductor winding on the module. Since it may be  
difficult to measure TIND, it may be approximated by an  
estimate of the module temperature.  
Reading the Status of the Module using the  
PMBus  
Measuring Output Voltage Using the PMBus  
The module supports a number of status information  
commands implemented in PMBus. However, not all  
features are supported in these commands. A 1 in the  
bit position indicates the fault that is flagged.  
The module can provide output voltage information  
using the READ_VOUT command. The command  
returns two bytes of data all representing the mantissa  
while the exponent is fixed at -10 (decimal).  
STATUS_BYTE : Returns one byte of information with a  
summary of the most critical device faults.  
During manufacture of the module, offset and gain  
correction values are written into the non-volatile  
memory of the module. The command  
Bit  
Position  
Default  
Value  
Flag  
VOUT_CAL_OFFSET can be used to read and/or write  
the offset (two bytes consisting of a 16-bit mantissa in  
two’s complement format) while the exponent is always  
fixed at -10 (decimal). The allowed range for this offset  
correction is -125 to 124mV. The command  
VOUT_CAL_GAIN can be used to read and/or write the  
gain correction - two bytes consisting of a five-bit  
exponent (fixed at -8) and a 11-bit mantissa. The range  
of this correction factor is -0.125V to +0.121V, with a  
resolution of 0.004V. The corrected output voltage  
reading is then given by:  
7
6
5
4
3
2
1
0
X
OFF  
0
0
0
0
0
0
0
0
VOUT Overvoltage  
IOUT Overcurrent  
VIN Undervoltage  
Temperature  
CML (Comm. Memory Fault)  
None of the above  
STATUS_WORD : Returns two bytes of information with  
a summary of the module’s fault/warning conditions.  
Low Byte  
Bit  
Position  
VOUT (Final) =  
[VOUT (Initial)× (1+VOUT _ CAL_ GAIN)]  
+VOUT _ CAL_ OFFSET  
Default  
Value  
Flag  
7
6
5
4
3
2
1
0
X
OFF  
0
0
0
0
0
0
0
0
VOUT Overvoltage  
IOUT Overcurrent  
VIN Undervoltage  
Temperature  
Measuring Input Voltage Using the PMBus  
The module can provide output voltage information  
using the READ_VIN command. The command returns  
two bytes of data in the linear format. The upper five bits  
[7:3] of the high data form the two’s complement  
representation of the mantissa which is fixed at –5  
(decimal). The remaining 11 bits are used for two’s  
complement representation of the mantissa, with the  
11th bit fixed at zero since only positive numbers are  
valid.  
CML (Comm. Memory Fault)  
None of the above  
High Byte  
Flag  
Bit  
Position  
Default  
Value  
7
6
5
4
3
2
1
0
VOUT fault or warning  
IOUT fault or warning  
0
0
0
0
0
0
0
0
During module manufacture, offset and gain correction  
values are written into the non-volatile memory of the  
module. The command VIN_CAL_OFFSET can be used  
to read and/or write the offset - two bytes consisting of a  
five-bit exponent (fixed at -5) and a11-bit mantissa in  
two’s complement format. The allowed range for this  
offset correction is -2 to 1.968V, and the resolution is  
32mV. The command VIN_CAL_GAIN can be used to  
read and/or write the gain correction - two bytes  
consisting of a five-bit exponent (fixed at -8) and a 11-bit  
mantissa. The range of this correction factor is -0.125V  
to +0.121V, with a resolution of 0.004V. The corrected  
output voltage reading is then given by:  
X
X
POWER_GOOD# (is negated)  
X
X
X
STATUS_VOUT : Returns one byte of information  
relating to the status of the module’s output voltage  
related faults.  
Bit  
Position  
Default  
Value  
Flag  
7
6
VOUT OV Fault  
X
0
0
LINEAGE POWER  
23  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
MFR_SPECIFIC_00 : Returns information related to the  
type of module and revision number. Bits [7:2] in the  
Low Byte indicate the module type (000110 corresponds  
to the PDT006 series of module), while bits [7:3] indicate  
the revision number of the module.  
5
4
3
2
1
0
X
0
0
0
0
0
0
VOUT UV Fault  
X
X
X
X
Low Byte  
STATUS_IOUT : Returns one byte of information  
relating to the status of the module’s output voltage  
related faults.  
Bit  
Position  
7:2  
Default  
Value  
000110  
10  
Flag  
Module Name  
Reserved  
1:0  
Bit  
Position  
Default  
Value  
Flag  
7
6
5
4
3
2
1
0
IOUT OC Fault  
0
0
0
0
0
0
0
0
High Byte  
Flag  
X
Bit  
Position  
7:3  
Default  
Value  
None  
000  
IOUT OC Warning  
X
X
X
X
X
Module Revision Number  
Reserved  
2:0  
STATUS_TEMPERATURE : Returns one byte of  
information relating to the status of the module’s  
temperature related faults.  
Bit  
Position  
Default  
Value  
Flag  
7
6
5
4
3
2
1
0
OT Fault  
OT Warning  
0
0
0
0
0
0
0
0
X
X
X
X
X
X
STATUS_CML : Returns one byte of information relating  
to the status of the module’s communication related  
faults.  
Bit  
Position  
Default  
Value  
Flag  
7
6
5
4
3
2
1
0
Invalid/Unsupported Command  
Invalid/Unsupported Command  
Packet Error Check Failed  
0
0
0
0
0
0
0
0
X
X
X
Other Communication Fault  
X
MFR_VIN_MIN : Returns minimum input voltage as two  
data bytes of information in Linear format (upper five bits  
are exponent – fixed at -2, and lower 11 bits are  
mantissa in two’s complement format – fixed at 12)  
MFR_VOUT_MIN : Returns minimum output voltage as  
two data bytes of information in Linear format (upper five  
bits are exponent – fixed at -10, and lower 11 bits are  
mantissa in two’s complement format – fixed at 614)  
LINEAGE POWER  
24  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Summary of Supported PMBus Commands  
Please refer to the PMBus 1.1 specification for more details of these commands.  
Table 6  
Non-Volatile  
Memory  
Storage  
Hex  
Code  
Command  
Brief Description  
Turn Module on or off. Also used to margin the output voltage  
Format  
Bit Position  
Access  
Function  
Default Value  
Unsigned Binary  
7
6
r
X
0
5
r/w  
4
3
2
r/w  
1
r
X
X
0
r
X
X
01  
OPERATION  
r/w  
On  
0
r/w  
r/w  
Margin  
0
0
0
0
Configures the ON/OFF functionality as a combination of analog ON/OFF  
pin and PMBus commands  
Format  
Bit Position  
Access  
Function  
Default Value  
Unsigned Binary  
7
r
X
0
6
r
X
0
5
r
X
0
4
r/w  
pu  
1
3
r/w  
cmd  
0
2
1
r/w  
cpa  
1
0
r
X
1
02  
03  
ON_OFF_CONFIG  
CLEAR_FAULTS  
YES  
r/w  
pol  
1
Clear any fault bits that may have been set, also releases the SMBALERT#  
signal if the device has been asserting it.  
Used to control writing to the module via PMBus. Copies the current register  
setting in the module whose command code matches the value in the data  
byte into non-volatile memory (EEPROM) on the module  
Format  
Bit Position  
Access  
Function  
Default Value  
Unsigned Binary  
7
r/w  
bit7  
0
6
r/w  
bit6  
0
5
r/w  
bit5  
0
4
x
3
x
2
x
X
X
1
x
X
X
0
x
X
X
X
X
X
X
10  
WRITE_PROTECT  
YES  
Bit5: 0 – Enables all writes as permitted in bit6 or bit7  
1 – Disables all writes except the WRITE_PROTECT, OPERATION  
and ON_OFF_CONFIG (bit 6 and bit7 must be 0)  
Bit 6: 0 – Enables all writes as permitted in bit5 or bit7  
1 – Disables all writes except for the WRITE_PROTECT and  
OPERATION commands (bit5 and bit7 must be 0)  
Bit7: 0 – Enables all writes as permitted in bit5 or bit6  
1 – Disables all writes except for the WRITE_PROTECT command  
(bit5 and bit6 must be 0)  
Copies all current register settings in the module into non-volatile memory  
(EEPROM) on the module. Takes about 50ms for the command to execute.  
11  
12  
STORE_DEFAULT_ALL  
Restores all current register settings in the module from values in the  
module non-volatile memory (EEPROM)  
RESTORE_DEFAULT_ALL  
Copies the current register setting in the module whose command code  
matches the value in the data byte into non-volatile memory (EEPROM) on  
the module  
13  
14  
STORE_DEFAULT_CODE  
Bit Position  
Access  
7
w
6
w
5
w
4
w
3
w
2
w
1
w
0
w
Function  
Command code  
Restores the current register setting in the module whose command code  
matches the value in the data byte from the value in the module non-volatile  
memory (EEPROM)  
RESTORE_DEFAULT_CODE  
Bit Position  
Access  
7
w
6
w
5
w
4
w
3
w
2
w
1
w
0
w
Function  
Command code  
The module has MODE set to Linear and Exponent set to -10. These values  
cannot be changed  
Bit Position  
Access  
Function  
7
r
6
5
r
4
r
3
r
2
1
r
0
r
20  
VOUT_MODE  
r
Mode  
0
r
Exponent  
1
Default Value  
0
0
1
0
1
0
LINEAGE POWER  
25  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Apply a fixed offset voltage to the output voltage command value  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r/w  
6
r/w  
5
4
3
2
1
r/w  
0
r/w  
r/w  
r/w  
r/w  
r/w  
Function  
High Byte  
22  
25  
26  
VOUT_TRIM  
YES  
YES  
YES  
Default Value  
Bit Position  
Access  
Function  
Default Value  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
0
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Low Byte  
0
0
0
0
0
0
0
0
Sets the target voltage for margining the output high  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
r/w  
4
3
2
r/w  
1
r/w  
0
r/w  
r/w  
r/w  
Function  
High Byte  
VOUT_MARGIN_HIGH  
Default Value  
Bit Position  
Access  
Function  
Default Value  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
1
0
r/w  
r/w  
r/w  
Low Byte  
0
1
0
0
0
1
1
1
Sets the target voltage for margining the output low  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
r/w  
4
3
2
r/w  
1
r/w  
0
r/w  
r/w  
r/w  
Function  
High Byte  
VOUT_MARGIN_LOW  
Default Value  
Bit Position  
Access  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Function  
Low Byte  
Default Value  
0
1
0
1
0
0
0
1
Sets the scaling of the output voltage – equal to the feedback resistor  
divider ratio  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r/w  
0
r/w  
r
Function  
Exponent  
Mantissa  
29  
VOUT_SCALE_LOOP  
YES  
Default Value  
Bit Position  
Access  
1
7
r/w  
0
6
r/w  
1
5
r/w  
1
4
r/w  
1
3
r/w  
0
2
r/w  
0
1
r/w  
1
0
r/w  
Function  
Mantissa  
Default Value  
0
0
0
0
0
0
0
0
Sets the value of input voltage at which the module turns on  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
35  
VIN_ON  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r/w  
1
5
r/w  
1
4
r/w  
0
3
r/w  
0
2
r/w  
0
1
r/w  
0
0
r/w  
Function  
Mantissa  
Default Value  
0
0
0
0
1
0
1
1
LINEAGE POWER  
26  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Sets the value of input voltage at which the module turns off  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
36  
VIN_OFF  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r/w  
1
5
r/w  
1
4
r/w  
0
3
r/w  
0
2
r/w  
0
1
r/w  
0
0
r/w  
Function  
Mantissa  
Default Value  
0
0
0
0
1
0
1
0
Returns the value of the gain correction term used to correct the measured  
output current  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r/w  
r
Function  
Exponent  
Mantissa  
38  
IOUT_CAL_GAIN  
YES  
Default Value  
Bit Position  
Access  
1
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
r/w  
1
3
r/w  
0
2
r/w  
0
1
r/w  
V
0
r/w  
Function  
Default Value  
Mantissa  
V: Variable based on factory calibration  
Returns the value of the offset correction term used to correct the measured  
output current  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
1
r
0
r
r
r/w  
Function  
Exponent  
Mantissa  
39  
IOUT_CAL_OFFSET  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
1
5
r/w  
0
4
r/w  
0
3
r/w  
V
2
r/w  
0
1
r/w  
0
0
r/w  
Function  
Default Value  
Mantissa  
V: Variable based on factory calibration  
0
0
Sets the voltage level for an output overvoltage fault  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
4
3
2
1
r/w  
0
r/w  
r/w  
r/w  
r/w  
r/w  
Function  
High Byte  
40  
VOUT_OV_FAULT_LIMIT  
YES  
Default Value  
Bit Position  
Access  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
1
0
r/w  
r/w  
r/w  
Function  
Low Byte  
Default Value  
0
0
0
0
1
0
1
0
Instructs the module on what action to take in response to a output  
overvoltage fault  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r/w  
6
r/w  
5
r/w  
4
3
2
r
1
r
0
r
41  
VOUT_OV_FAULT_RESPONSE  
YES  
r/w  
r/w  
RSP RSP  
Function  
RS[2] RS[1] RS[0]  
X
1
X
0
X
0
[1]  
1
[0]  
1
Default Value  
1
1
1
LINEAGE POWER  
27  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Sets the voltage level for an output undervoltage fault  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
4
3
2
1
r/w  
0
r/w  
r/w  
r/w  
r/w  
r/w  
Function  
High Byte  
44  
45  
4A  
VOUT_UV_FAULT_LIMIT  
VOUT_UV_FAULT_RESPONSE  
IOUT_OC_WARN_LIMIT  
YES  
YES  
YES  
Default Value  
Bit Position  
Access  
Function  
Default Value  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Low Byte  
1
0
0
0
1
1
1
1
Instructs the module on what action to take in response to a output  
undervoltage fault  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r/w  
RSP RSP  
[1]  
0
6
r/w  
5
r/w  
4
3
2
r
1
r
0
r
r/w  
r/w  
Function  
RS[2] RS[1] RS[0]  
X
1
X
0
X
0
[0]  
0
Default Value  
0
0
0
Sets the output overcurrent warning level in A  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
Function  
Exponent  
Mantissa  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
1
5
r/w  
1
4
1
3
0
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Function  
Default Value  
Mantissa  
tbd tbd  
0
0
tbd  
tbd  
tbd  
tbd  
Sets the output voltage level at which the PGOOD pin is asserted high  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
4
3
2
1
r/w  
0
r/w  
r/w  
r/w  
r/w  
r/w  
Function  
High Byte  
5E  
POWER_GOOD_ON  
YES  
Default Value  
Bit Position  
Access  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Function  
Low Byte  
Default Value  
0
1
1
0
1
0
1
0
Sets the output voltage level at which the PGOOD pin is de-asserted low  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r/w  
5
4
3
2
1
r/w  
0
r/w  
r/w  
r/w  
r/w  
r/w  
Function  
High Byte  
5F  
POWER_GOOD_OFF  
YES  
Default Value  
Bit Position  
Access  
0
7
r/w  
0
6
r/w  
0
5
r/w  
0
4
0
3
1
2
r/w  
0
1
r/w  
0
0
r/w  
r/w  
r/w  
Function  
Low Byte  
Default Value  
0
1
0
1
0
0
1
0
LINEAGE POWER  
28  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Sets the rise time of the output voltage during startup  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r/w  
r
Function  
Exponent  
Mantissa  
61  
TON_RISE  
YES  
Default Value  
Bit Position  
Access  
1
7
r/w  
1
6
r/w  
1
5
r/w  
0
4
r/w  
0
3
r/w  
0
2
r/w  
0
1
r/w  
0
0
r/w  
Function  
Mantissa  
Default Value  
0
0
1
0
1
0
1
0
Returns one byte of information with a summary of the most critical module  
faults  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
78  
STATUS_BYTE  
r
OTHE  
R
VOUT IOUT VIN_  
_OV _OC UV  
Flag  
X
0
OFF  
0
TEMP CML  
Default Value  
0
0
0
0
0
0
Returns two bytes of information with a summary of the module’s  
fault/warning conditions  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
r
4
r
3
2
r
1
r
0
r
r
PGO  
OD  
0
3
r
IOUT  
_OC  
Flag  
VOUT  
X
X
X
X
X
79  
STATUS_WORD  
Default Value  
Bit Position  
Access  
0
7
r
0
6
r
0
5
r
0
4
r
0
2
r
0
1
r
0
0
r
OTHE  
R
VOUT IOUT VIN_  
_OV _OC UV  
Flag  
X
0
OFF  
0
TEMP CML  
Default Value  
0
0
0
0
0
0
Returns one byte of information with the status of the module’s output  
voltage related faults  
Format  
Bit Position  
Access  
Flag  
Default Value  
Unsigned Binary  
7
r
6
r
X
0
5
r
4
r
3
r
X
0
2
r
X
0
1
r
X
0
0
r
X
0
7A  
7B  
7D  
STATUS_VOUT  
VOUT_OV  
0
X
0
VOUT_UV  
0
Returns one byte of information with the status of the module’s output  
current related faults  
Format  
Bit Position  
Access  
Unsigned Binary  
7
6
r
X
0
5
r
X
0
4
r
3
r
2
r
X
0
1
r
X
0
0
STATUS_IOUT  
r
IOUT_OC  
0
r
Flag  
Default Value  
X
0
IOUT_OC_WARN  
0
X
0
Returns one byte of information with the status of the module’s temperature  
related faults  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
STATUS_TEMPERATURE  
Flag  
Default Value  
OT_FAULT OT_WARN  
X
0
X
0
X
0
X
0
X
0
X
0
0
0
LINEAGE POWER  
29  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Returns one byte of information with the status of the module’s  
communication related faults  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
7E  
STATUS_CML  
Other  
Comm  
Fault  
0
Invalid  
Command Data Fail  
Invalid PEC  
Flag  
X
0
X
0
X
0
X
0
Default Value  
0
0
0
Returns the value of the input voltage applied to the module  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
88  
READ_VIN  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
0
5
r
1
4
r
1
3
r
0
2
r
0
1
r
0
0
r
Function  
Mantissa  
Default Value  
0
0
0
0
0
0
0
0
Returns the value of the output voltage of the module  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
Function  
Mantissa  
8B  
READ_VOUT  
Default Value  
Bit Position  
Access  
0
7
r
0
6
r
0
5
r
0
4
r
0
3
r
0
2
r
0
1
r
0
0
r
Function  
Mantissa  
Default Value  
0
0
0
0
0
0
0
0
Returns the value of the output current of the module  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
8C  
READ_IOUT  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
1
5
r
0
4
r
0
3
r
0
2
r
0
1
r
0
0
r
Function  
Mantissa  
Default Value  
0
0
0
0
0
0
0
0
Returns one byte indicating the module is compliant to PMBus Spec. 1.1  
(read only)  
Format  
Bit Position  
Access  
Unsigned Binary  
98  
PMBUS_REVISION  
YES  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
Default Value  
0
0
0
1
0
0
0
1
Returns the minimum input voltage the module is specified to operate at  
(read only)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
A0  
MFR_VIN_MIN  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
1
5
r
1
4
r
0
3
r
0
2
r
0
1
r
0
0
r
Function  
Mantissa  
Default Value  
0
0
0
0
1
1
0
0
LINEAGE POWER  
30  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Table 6 (continued)  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Returns the minimum output voltage possible from the module (read only)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
r
2
r
1
r
0
r
r
Function  
Exponent  
Mantissa  
A4  
MFR_VOUT_MIN  
YES  
Default Value  
Bit Position  
Access  
0
7
r
0
6
r
0
5
r
0
4
r
0
3
r
0
2
r
1
1
r
0
0
r
Function  
Mantissa  
Default Value  
0
1
1
0
0
1
1
0
Returns module name information (read only)  
Format  
Bit Position  
Access  
Unsigned Binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r
Function  
Reserved  
D0  
MFR_SPECIFIC_00  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
1
5
r
0
4
r
1
3
r
0
2
r
0
1
r
0
0
r
Function  
Module Name  
Reserved  
Default Value  
0
0
0
1
1
0
1
0
Applies an offset to the READ_VOUT command results to calibrate out offset  
errors in module measurements of the output voltage (between -125mV and  
+124mV)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r/w  
6
r
5
r
4
r
3
r
2
r
1
r
0
r
D4  
D5  
D6  
VOUT_CAL_OFFSET  
VOUT_CAL_GAIN  
VIN_CAL_OFFSET  
YES  
YES  
YES  
Function  
Mantissa  
Default Value  
Bit Position  
Access  
Function  
Default Value  
V
7
r/w  
0
6
r/w  
0
5
0
4
0
3
0
2
0
1
r/w  
0
0
r/w  
r/w  
r/w  
r/w  
r/w  
Mantissa  
V
V
V
V
V
V
V
V
Applies a gain correction to the READ_VOUT command results to calibrate out  
gain errors in module measurements of the output voltage (between -0.125 and  
0.121)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
r
4
r
3
r
2
r
1
r
0
r/w  
Function  
Exponent  
Mantissa  
Default Value  
Bit Position  
Access  
Function  
Default Value  
1
7
r/w  
1
6
r/w  
0
5
0
4
0
3
0
2
0
1
r/w  
V
0
r/w  
r/w  
r/w  
r/w  
r/w  
Mantissa  
V
V
V
V
V
V
V
V
Applies an offset correction to the READ_VIN command results to calibrate out  
offset errors in module measurements of the input voltage (between -2V and  
+1.968V)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
r
4
r
3
r/w  
2
r
1
r
0
r/w  
Function  
Exponent  
Mantissa  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
0
5
r/w  
1
4
r/w  
V
3
r/w  
0
2
r/w  
0
1
r/w  
V
0
r/w  
Function  
Mantissa  
Default Value  
0
0
V
V
V
V
V
V
LINEAGE POWER  
31  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Non-Volatile  
Memory  
Storage  
Hex  
Command  
Code  
Brief Description  
Applies a gain correction to the READ_VIN command results to calibrate out gain  
errors in module measurements of the input voltage (between -0.125 and 0.121)  
Format  
Bit Position  
Access  
Linear, two’s complement binary  
7
r
6
r
5
4
r
3
2
r
1
r
0
r/w  
r
r/w  
Function  
Exponent  
Mantissa  
D7  
VIN_CAL_GAIN  
YES  
Default Value  
Bit Position  
Access  
1
7
r
1
6
r
0
5
r
0
4
r/w  
V
3
r/w  
0
2
r/w  
0
1
r/w  
V
0
r/w  
Function  
Mantissa  
Default Value  
0
0
0
V
V
V
V
V
LINEAGE POWER  
32  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
The thermal reference points, Tref used in the  
specifications are also shown in Figure 50. For reliable  
Thermal Considerations  
Power modules operate in a variety of thermal  
environments; however, sufficient cooling should  
always be provided to help ensure reliable operation.  
operation the temperatures at these points should not  
exceed TBD. The output power of the module should  
not exceed the rated power of the module (Vo,set x  
Io,max).  
Considerations include ambient temperature, airflow,  
module power dissipation, and the need for increased  
reliability. A reduction in the operating temperature of  
the module will result in an increase in reliability. The  
thermal data presented here is based on physical  
measurements taken in a wind tunnel. The test set-up  
is shown in Figure 49. The preferred airflow direction  
for the module is in Figure 50.  
Please refer to the Application Note “Thermal  
Characterization Process For Open-Frame Board-  
Mounted Power Modules” for a detailed discussion of  
thermal aspects including maximum device  
temperatures.  
25.4_  
Wind Tunnel  
PWBs  
(1.0)  
Power Module  
Figure 50. Preferred airflow direction and location  
of hot-spot of the module (Tref).  
76.2_  
(3.0)  
x
Probe Location  
for measuring  
airflow and  
12.7_  
(0.50)  
ambient  
temperature  
Air  
flow  
Figure 49. Thermal Test Setup.  
LINEAGE POWER  
33  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Example Application Circuit  
Requirements:  
Vin:  
12V  
Vout:  
1.8V  
Iout:  
4.5A max., worst case load transient is from 3A to 4.5A  
1.5% of Vout (27mV) for worst case load transient  
1.5% of Vin (180mV, p-p)  
Vout:  
Vin, ripple  
Vin+  
Vout+  
VIN  
VOUT  
VS+  
PGOOD  
RTUNE  
CTUNE  
MODULE  
SEQ  
SEQ  
TRIM  
ADDR0  
ADDR1  
CI3  
CI2  
CI1  
CO3  
CO1  
CO2  
DATA  
SMBALRT#  
RTrim  
ON/OFF  
SYNC  
RADDR1  
RADDR0  
SIG_GND  
GND  
VS-  
GND  
CI1  
Decoupling cap - 1x0.01µF/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01)  
1x22µF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20)  
47µF/16V bulk electrolytic  
CI2  
CI3  
CO1  
CO2  
CO3  
CTune  
RTune  
RTrim  
Decoupling cap - 1x0.01µF/16V ceramic capacitor (e.g. Murata LLL185R71E103MA01)  
1 x 47µF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)  
1 x 330µF/6.3V Polymer (e.g. Sanyo Poscap)  
2200pF ceramic capacitor (can be 1206, 0805 or 0603 size)  
178 ohms SMT resistor (can be 1206, 0805 or 0603 size)  
10kSMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)  
LINEAGE POWER  
34  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Mechanical Outline  
Dimensions are in millimeters and (inches).  
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated]  
x.xx mm 0.25 mm (x.xxx in 0.010 in.)  
PIN  
FUNCTION  
PIN  
FUNCTION  
1
ON/OFF  
VIN  
10  
PGOOD  
1
2
3
4
5
6
7
8
9
11  
12  
13  
14  
15  
16  
17  
SYNC  
GND  
VS-  
SIG. GND  
SMBALERT  
DATA  
VOUT  
VS+ (SENSE)  
TRIM  
GND  
ADDR0  
CLK  
ADDR1  
SEQ  
1 If unused, connect to Ground.  
PIN 7  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Recommended Pad Layout  
Dimensions are in millimeters and (inches).  
Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated]  
x.xx mm 0.25 mm (x.xxx in 0.010 in.)  
7
PIN  
1
FUNCTION  
ON/OFF  
VIN  
PIN FUNCTION  
10  
11  
12  
13  
PGOOD  
SYNC2  
VS-  
2
3
GND  
4
VOUT  
SIG_GND  
5
VS+ (SENSE) 14 SMBALERT  
6
TRIM  
GND  
CLK  
15  
16  
17  
DATA  
ADDR0  
ADDR1  
7
8
9
SEQ  
2 If unused, connect to Ground  
LINEAGE
POWER  
36  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Packaging Details  
The 12V Digital Pico DLynxTM 6A modules are supplied in tape & reel as standard. Modules are shipped in quantities  
of 200 modules per reel.  
All Dimensions are in millimeters and (in inches).  
Reel Dimensions:  
Outside Dimensions:  
Inside Dimensions:  
Tape Width:  
330.2 mm (13.00)  
177.8 mm (7.00”)  
24.00 mm (0.945”)  
LINEAGE
POWER  
37  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Dwell time above 217 C: 60 seconds minimum  
Dwell time above 235 C: 5 to 15 second  
Surface Mount Information  
Pick and Place  
MSL Rating  
The 6A Digital Pico DLynxTM modules use an open  
frame construction and are designed for a fully  
automated assembly process. The modules are fitted  
with a label designed to provide a large surface area  
for pick and place operations. The label meets all the  
requirements for surface mount processing, as well as  
safety standards, and is able to withstand reflow  
temperatures of up to 300oC. The label also carries  
product information such as product code, serial  
number and the location of manufacture.  
The 6A Digital Pico DLynxTM modules have a MSL  
rating of 2.  
Storage and Handling  
The recommended storage environment and handling  
procedures for moisture-sensitive surface mount  
packages is detailed in J-STD-033 Rev. B (Handling,  
Packing, Shipping and Use of Moisture/Reflow  
Sensitive Surface Mount Devices). Moisture barrier  
bags (MBB) with desiccant are required for MSL  
ratings of 2 or greater. These sealed packages should  
not be broken until time of use. Once the original  
package is broken, the floor life of the product at  
conditions of 30°C and 60% relative humidity varies  
according to the MSL rating (see J-STD-033A). The  
shelf life for dry packed SMT packages will be a  
minimum of 12 months from the bag seal date, when  
stored at the following conditions: < 40° C, < 90%  
relative humidity.  
Nozzle Recommendations  
The module weight has been kept to a minimum by  
using open frame construction. Variables such as  
nozzle size, tip style, vacuum pressure and placement  
speed should be considered to optimize this process.  
The minimum recommended inside nozzle diameter  
for reliable operation is 3mm. The maximum nozzle  
outer diameter, which will safely fit within the allowable  
component spacing, is 7 mm.  
Bottom Side / First Side Assembly  
This module is not recommended for assembly on the  
bottom side of a customer board. If such an assembly  
is attempted, components may fall off the module  
during the second reflow process.  
Lead Free Soldering  
The 12VDigital Pico DLynxTM 6A modules are lead-free  
(Pb-free) and RoHS compliant and are both forward  
and backward compatible in a Pb-free and a SnPb  
soldering process. Failure to observe the instructions  
below may result in the failure of or cause damage to  
the modules and can adversely affect long-term  
reliability.  
Figure 51. Recommended linear reflow profile  
using Sn/Ag/Cu solder.  
Post Solder Cleaning and Drying  
Considerations  
Pb-free Reflow Profile  
Power Systems will comply with J-STD-020 Rev. C  
(Moisture/Reflow Sensitivity Classification for  
Nonhermetic Solid State Surface Mount Devices) for  
both Pb-free solder profiles and MSL classification  
procedures. This standard provides a recommended  
forced-air-convection reflow profile based on the  
volume and thickness of the package (table 5-2). The  
suggested Pb-free solder paste is Sn/Ag/Cu (SAC).  
The recommended linear reflow profile using Sn/Ag/Cu  
solder is shown in Fig. 51. Soldering outside of the  
recommended profile requires testing to verify results  
and performance.  
Post solder cleaning is usually the final circuit-board  
assembly process prior to electrical board testing. The  
result of inadequate cleaning and drying can affect  
both the reliability of a power module and the testability  
of the finished circuit-board assembly. For guidance on  
appropriate soldering, cleaning and drying procedures,  
refer to Board Mounted Power Modules: Soldering and  
Cleaning Application Note (AN04-001).  
It is recommended that the pad layout include a test  
pad where the output pin is in the ground plane.  
The thermocouple should be attached to this test  
pad since this will be the coolest solder joints. The  
temperature of this point should be:  
Maximum peak temperature is 260 C.  
Minimum temperature is 235 C.  
LINEAGE POWER  
38  
Preliminary Data Sheet  
October 17, 2011  
6A Digital Pico DLynxTM: Non-isolated DC-DC Power Modules  
3 – 14.4Vdc input; 0.45Vdc to 5.5Vdc output; 6A output current  
Ordering Information  
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.  
Table 7. Device Codes  
Input  
Voltage Range  
Output  
Voltage  
Output  
Current  
On/Off  
Logic  
Device Code  
Sequencing  
Comcodes  
PDT006A0X3-SRZ  
PDT006A0X43-SRZ  
3 – 14.4Vdc  
3 – 14.4Vdc  
0.45 – 5.5Vdc  
0.45 – 5.5Vdc  
6A  
6A  
Negative  
Positive  
Yes  
Yes  
CC109159604  
CC109159612  
-Z refers to RoHS compliant parts  
Table 8. Coding Scheme  
Package Family Sequencing Output Output  
On/Off Remote  
ROHS  
Identifier  
Option  
current voltage  
logic  
Sense  
Options  
-D  
Compliance  
P
D
T
006A0  
X
4
3
-SR  
Z
P=Pico D=Dlynx T=with EZ  
6A  
X =  
4 =  
3 =  
S =  
Z = ROHS6  
D = 105°C  
operating  
ambient,  
40G  
operating  
shock as  
per MIL  
Digital  
Sequence  
programm positive  
able output  
Remote Surface  
Sense  
U=Micro  
M=Mega  
G=Giga  
Mount  
V =  
X=without  
No entry  
=
negative  
DLynx  
Analog.  
sequencing  
R =  
Tape &  
Reel  
Std 810F  
Asia-Pacific Headquarters  
Tel: +86.021.54279977*808  
Europe, Middle-East and Africa Headquarters  
Tel: +49.89.878067-280  
World Wide Headquarters  
Lineage Power Corporation  
601 Shiloh Road, Plano, TX 75074, USA  
+1-888-LINEAGE(546-3243)  
India Headquarters  
Tel: +91.80.28411633  
(Outside U.S.A.: +1-972-244-WATT(9288))  
www.lineagepower.com  
e-mail: techsupport1@lineagepower.com  
Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or  
application. No rights under any patent accompany the sale of any such product(s) or information.  
Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents.  
© 2011 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved.  
Lineage Power Digital Non-Isolated DC-DC products use technology licensed from Power-One, protected by US patents: US20040246754, US2004090219A1,  
US2004093533A1, US2004123164A1, US2004123167A1, US2004178780A1, US2004179382A1, US20050200344, US20050223252, US2005289373A1, US20060061214,  
US2006015616A1, US20060174145, US20070226526, US20070234095, US20070240000, US20080052551, US20080072080, US20080186006, US6741099, US6788036,  
US6936999, US6949916, US7000125, US7049798, US7068021, US7080265, US7249267, US7266709, US7315156, US7372682, US7373527, US7394445, US7456617,  
US7459892, US7493504, US7526660.  
Outside the US the Power-One licensed technology is protected by patents: AU3287379AA, AU3287437AA, AU3290643AA, AU3291357AA, CN10371856C,  
CN1045261OC, CN10458656C, CN10459360C, CN10465848C, CN11069332A, CN11124619A, CN11346682A, CN1685299A, CN1685459A, CN1685582A, CN1685583A,  
CN1698023A, CN1802619A, EP1561156A1, EP1561268A2, EP1576710A1, EP1576711A1, EP1604254A4, EP1604264A4, EP1714369A2, EP1745536A4, EP1769382A4,  
EP1899789A2, EP1984801A2, W004044718A1, W004045042A3, W004045042C1, W004062061 A1, W004062062A1, W004070780A3, W004084390A3, W004084391A3,  
W005079227A3, W005081771A3, W006019569A3, W02007001584A3, W02007094935A3  
LINEAGE POWER  
39  
Document No: DS11-008 ver. 0.33  
PDF name: PDT006A0X.pdf  

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