Q2D25ZGE-N [BEL]

DC-DC Regulated Power Supply Module, 2 Output, Hybrid;
Q2D25ZGE-N
型号: Q2D25ZGE-N
厂家: BEL FUSE INC.    BEL FUSE INC.
描述:

DC-DC Regulated Power Supply Module, 2 Output, Hybrid

文件: 总14页 (文件大小:248K)
中文:  中文翻译
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Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Features  
Independent outputs of any combination of  
voltages from 1.2V to 5.0V  
Simultaneously delivers 15A per output from  
1.2V to 3.3V; 10A for 5V output  
Extremely low-profile (<8mm or 0.30”) single-  
board design. No heatsink required.  
Light Weight: 28 g ( 1.00 oz)  
Surface mount and through-hole versions  
High efficiency  
No minimum load required on either output  
Starts-up into pre-biased outputs  
Meets transient withstand requirements of  
Bellcore GR-513  
Fixed frequency operation  
Remote on/off (primary referenced), positive  
or negative logic  
Applications  
Distributed power architectures  
Telecommunications equipment  
LAN/WAN applications  
Output voltage trim. ± 10% for each output  
Output overcurrent protection  
Output overvoltage protection  
Overtemperature protection  
Data processing applications  
Description  
The new Q2D series of dual output DC/DC converters offer unprecedented density and performance in an  
industry standard, quarter-brick footprint. Patent pending technology and state-of-the-art packaging  
techniques achieve a total of 30A (25A for 5V output) output current, 15A (10A for 5V output) per channel,  
without a heatsink. Extremely low profile (<8mm or 0.30”) enables the converters to be used in applications  
where spacing between circuit boards is limited. The 100% surface-mount design provides consistent high  
quality and reliability. The SMT mounting option eliminates the need for separate (additional manual)  
process in attaching the converters to the motherboards during mass production.  
Location of the Thermocouple for Thermal Testing.  
Rev. NOV 13, 2002  
Page 1 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Part Numbering Guide  
Output  
Voltage 2  
Output  
Voltage 1  
Surface  
Mount  
Pin  
Length  
Height  
Option  
Product  
Series  
Output  
Current  
Input  
Voltage  
ON/OFF  
Logic  
25  
Z
G
E
N
C2  
Q2D  
M6  
M6  
Surface  
Mount  
N ⇒  
Blank 0.188”  
7 0.145”  
8 0.110”  
See Chart  
Below  
G = 5.0VDC  
E = 3.3VDC  
D = 2.5VDC  
Negative  
E = 3.3VDC  
D = 2.5VDC  
B = 1.8VDC  
Y = 1.2VDC  
Vout2 = 5V,  
Iout = 25A  
Dual  
Quarter-  
Brick  
48Vin  
Nom.  
Not Valid  
w/M6  
Option  
(Blank)  
Positive  
Vout2<5V  
Iout = 30A  
(Blank) ⇒  
Through  
Hole  
Not valid w/M6  
Option  
Format  
Base Model Selection Guide  
Model  
Input  
voltage  
range,  
VDC  
36-75  
36-75  
36-75  
36-75  
36-75  
36-75  
36-75  
Output  
Voltage,  
Vout 2  
VDC  
5.0  
Output  
Voltage,  
Vout 1  
VDC  
3.3  
Output  
Current,  
Output 2  
ADC  
10  
Output  
Current,  
Output 1  
ADC  
15  
Q2D25ZGE  
Q2D25ZGD  
Q2D25ZGB  
Q2D30ZED  
Q2D30ZEB  
Q2D30ZEY  
Q2D30ZDB  
5.0  
5.0  
3.3  
3.3  
3.3  
2.5  
2.5  
1.8  
2.5  
1.8  
1.2  
1.8  
10  
10  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
Height, Clearance and Pin Options for Through Hole Versions  
HT  
CL  
PL  
(Maximum Height)  
(Minimum Clearance)  
Pin Length  
Pin  
Height  
Option  
Option  
+0.000 [+0.00]  
-0.038 [- 0.97]  
0.303 [7.69]  
0.336 [8.53]  
0.400 [10.16]  
0.500 [12.70]  
+0.030 [+0.77]  
-0.000 [- 0.00]  
0.030 [ 0.77]  
0.063 [1.600]  
0.127 [3.23]  
0.227 [5.77]  
±0.005  
[±0.13]  
0.188 [4.77]  
0.145 [3.68]  
0.110 [2.79]  
blank  
C2  
C3  
7
8
C4  
Rev. NOV 13, 2002  
Page 2 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Absolute Maximum Ratings  
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect  
long-term reliability, and cause permanent damage to the converter.  
Parameter  
Input voltage  
Conditions/Description  
Operating Input Voltage  
Transient, 100 ms  
Min  
0
Max  
80  
100  
Units  
VDC  
VDC  
PCB Operating Temperature  
Storage Temperature  
At 100% load  
-40  
-40  
-1  
100  
°C  
°C  
VDC  
125  
ON/OFF Control Voltage  
Referenced to -Vin  
13.5  
Environmental and Mechanical Specifications  
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise  
noted.  
Parameter  
Vibration  
Conditions/Description  
Halfsine wave, 10-55 Hz, 3 axes,  
5 min each  
Min  
Nom  
Max  
5
Units  
g
Weight  
Water Washing  
MTBF  
1.0/28  
Yes  
2.6  
Oz/g  
MHrs  
Standard process  
Telcordia TR-332  
Method I Case 1  
Isolation Specifications  
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise  
noted.  
Parameter  
Conditions/Description  
Min  
Nom  
Max  
Units  
Insulation Safety Rating  
Isolation Voltage  
Isolation Resistance  
Basic  
2000  
10  
VDC  
MΩ  
nF  
Isolation Capacitance  
1.3  
Input Specifications  
All specifications apply over specified input voltage, output load and temperature range, unless otherwise  
noted.  
Parameter  
Input Voltage  
Turn-On Input Voltage  
Turn-Off Input Voltage  
Turn-On Time  
Conditions/Description  
Continuous  
Min  
36  
33  
Nom  
48  
34  
32  
3
Max  
75  
35  
Units  
VDC  
VDC  
VDC  
mS  
Ramping Up  
Ramping Down  
To Output Regulation Band  
100% Resistive Load  
Full Load, 12uH source  
inductance  
31  
33  
Input Reflected Ripple Current  
Input Inrush Current Limit  
6
mA p-p  
A2s  
Vin = Vin max  
1
Rev. NOV 13, 2002  
Page 3 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Output Specifications  
All specifications apply over specified input voltage, output load and temperature range, unless otherwise  
noted.  
Parameter  
Output Voltage Setpoint Accuracy  
Output Current* Vout1  
Conditions/Description  
Vin = Vin nom, Full Load  
Min  
-1.5  
0
Nom  
Max  
+1.5  
15  
Units  
%Vout  
ADC  
Output Current* Vout2  
0
15  
ADC  
10A if  
Vo2= 5.0  
Line Regulation Vout1  
Line Regulation Vout2  
Load Regulation, Vout1  
Vin.min to Vin max, Iout max  
Vin min to Vin max, Iout max  
Vin = Vnom, Iout min to  
Iout max  
+/-2  
+/-2  
-10  
mV  
mV  
mV  
Load Regulation, Vout2  
Vin = Vnom, Iout min to  
Iout max  
-10  
mV  
Dynamic Regulation  
Peak Deviation  
Settling Time  
50-75% load step change  
40  
60  
mV  
µs  
µF  
%Iout  
kHz  
%Vout  
to 1% error band  
Iout max, Nom Vin  
Vout=0.97Vout nom  
Admissible Load Capacitance  
10,000  
160  
Output Current Limit Threshold**  
Switching Frequency  
Overvoltage Protection,  
Non Latching  
110  
115  
90  
435  
Over all input voltage and  
load conditions  
Iout max, Vin = Vnom  
140  
110  
Trim Range  
%Vout  
** Overcurrent protection is non-latching with auto-recovery.  
Feature Specifications  
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise  
noted.  
Parameter  
Shutdown (ON/OFF)  
Negative Logic  
Converter ON  
Conditions/Description  
Min  
Nom  
Max  
Units  
On/Off signal is low – converter is ON  
ON/OFF pin is connected to -Vin  
-20  
2.4  
0.8  
20  
VDC  
Converter OFF  
VDC  
VDC  
Positive Logic  
On/Off signal is low –converter is OFF  
Converter ON  
2.4  
-20  
20  
VDC  
VDC  
VDC  
Converter OFF  
0.8  
ON/OFF pin is connected to -Vin  
PCB Temperature  
mADC  
°C  
Overtemperature  
Protection  
120  
Rev. NOV 13, 2002  
Page 4 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
t5  
t6  
Output voltage VOUT1 reaches 100% of  
nominal value.  
Output voltage VOUT2 reaches 100% of  
nominal value.  
Start-up Information (using negative ON/OFF)  
Scenario #1: Initial Start-up From Bulk Supply  
ON/OFF function enabled, converter started via  
For the condition, (t2 - t1) = 100ms, the total converter  
start-up time (t6 - t2) is typically 103ms. For (t2 - t1) > 100  
ms, start-up time will be typically 3ms after release of  
ON/OFF pin.  
application of V . See Figure 1.  
IN  
Time  
t0  
Comments  
ON/OFF pin is ON; system front end power  
is toggled on, VIN to converter begins to rise.  
VIN  
t1  
V
IN  
crosses  
Under-Voltage  
Lockout  
protection circuit threshold; converter  
enabled.  
Converter begins to respond to turn-on  
command (converter turn-on delay).  
Output voltage VOUT1 reaches 100% of  
nominal value.  
t2  
t3  
t4  
ON/OFF  
STATE  
OFF  
Output voltage VOUT2 reaches 100% of  
nominal value.  
ON  
For this example, the total converter start-up time (t4- t1)  
is typically 3ms.  
VOUT 2  
VOUT 1  
VOUT 2  
VOUT 1  
Scenario #2: Initial Start-up Using ON/OFF Pin  
With V previously powered, converter started via  
t0  
t1 t2  
t3 t4  
IN  
ON/OFF pin. See Figure 2.  
Fig. 1. Start-up Scenario #1  
VIN  
Time  
t0  
t1  
Comments  
VINPUT at nominal value.  
Arbitrary time when ON/OFF pin is enabled  
(converter enabled).  
t2  
t3  
End of converter turn-on delay.  
Output voltage VOUT1 reaches 100% of  
nominal value.  
Output voltage VOUT2 reaches 100% of  
nominal value.  
ON/OFF  
STATE  
OFF  
ON  
t4  
For this example, the total converter start-up time (t4 -  
t1) is typically 3ms.  
VOUT2  
VOUT1  
VOUT2  
VOUT1  
Scenario #3: Turn-off and Restart Using ON/OFF  
Pin  
With VIN previously powered, converter is disabled and  
then enabled via ON/OFF pin. See Figure 3.  
t0  
t1 t2  
t3 t4  
Fig. 2. Start-up Scenario #2  
VIN  
Time  
Comments  
t0  
VIN and VOUT are at nominal values; ON/OFF  
pin ON.  
t1  
ON/OFF pin arbitrarily disabled; converter  
outputs fall to zero; turn-on inhibit delay  
period (100ms typical) is initiated, and  
ON/OFF pin action is internally inhibited.  
ON/OFF pin is externally re-enabled.  
If (t2- t1) = 100ms, external action of  
ON/OFF pin is locked out by start-up  
inhibit timer.  
100 ms  
ON/OFF  
STATE  
OFF  
ON  
t2  
VOUT2  
VOUT1  
VOUT2  
VOUT1  
If (t2- t1) > 100ms, ON/OFF pin action is  
internally enabled.  
t3  
Turn-on inhibit delay period ends. If ON/OFF  
pin is ON, converter begins turn-on; if off,  
converter awaits ON/OFF pin ON signal; see  
Figure 6.  
t0  
t1  
t2  
t3 t4  
t5 t6  
Fig. 3. Start-up Scenario #3  
t4  
End of converter turn-on delay.  
Rev. NOV 13, 2002  
Page 5 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Characteristic curves  
0.95  
0.90  
0.85  
0.80  
0.95  
0.90  
0.85  
0.80  
0.75  
0.70  
0.65  
72 V  
0.75  
72 V  
48 V  
36 V  
48 V  
36 V  
0.70  
0.65  
0
2
4
6
8
10  
12  
14  
16  
16  
16  
0
2
4
6
8
10  
12  
14  
16  
Load Current Iout1 = 1.5·Iout2 [Adc]  
Load Current Iout1 = 1.5·Iout2 [Adc]  
Fig. 4. Q2D25ZGE (5.0V/3.3V), Balanced Load  
Fig. 7. Q2D25ZGD (5.0V/2.5V), Balanced Load  
0.95  
0.90  
0.85  
0.80  
0.95  
0.90  
0.85  
0.80  
72 V  
48 V  
36 V  
0.75  
72 V  
48 V  
36 V  
0.75  
0.70  
0.65  
0.70  
0.65  
0
2
4
6
8
10  
12  
14  
0
2
4
6
8
10  
12  
14  
16  
Load Current Iout1 = Iout2 [Adc]  
Load Current Iout1 = 1.5·Iout2 [Adc]  
Fig. 5. Q2D30ZED (3.3V/2.5V), Balanced Load  
Fig. 8. Q2D25ZGB (5.0V/1.8V), Balanced Load  
0.95  
0.95  
0.90  
0.85  
0.80  
0.90  
0.85  
0.80  
72 V  
0.75  
72 V  
48 V  
36 V  
0.75  
48 V  
36 V  
0.70  
0.65  
0.70  
0.65  
0
2
4
6
8
10  
12  
14  
16  
0
2
4
6
8
10  
12  
14  
Load Current Iout1 = 1.5·Iout2 [Adc]  
Load Current Iout1 = Iout2 [Adc]  
Fig. 6. Q2D30ZEB (3.3V/1.8V), Balanced Load  
Fig. 9. Q2D25ZDB (2.5V/1.8V), Balanced Load  
Rev. NOV 13, 2002  
Page 6 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
0.95  
0.90  
0.85  
0.80  
72 V  
48 V  
36 V  
0.75  
0.70  
0.65  
0
2
4
6
8
10  
12  
14  
16  
Load Current Iout1 = Iout2 [Adc]  
Fig. 10. Q2D30ZEY (3.3V/1.2V), Balanced Load  
Rev. NOV 13, 2002  
Page 7 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
0.2 mA at a low level voltage of 0.8 V, and  
sourcing up to 0.5 mA at high logic level of 5 V;  
higher current capability is required for control  
voltages greater than 5 V. See the Start-up  
Information section for system timing waveforms  
associated with use of the ON/OFF pin.  
Application  
Input and Output Impedance  
These power converters have been designed to  
be stable with no external capacitors when used  
in low inductance input and output circuits.  
Output Voltage Adjust /TRIM (Pin 6)  
However, in many applications, the inductance  
associated with the distribution from the power  
source to the input of the converter can affect the  
stability of the converter. The addition of a 33 µF  
electrolytic capacitor with an ESR < 1 across  
the input helps ensure stability of the converter. In  
many applications, the user has to use decoupling  
capacitance at the load. The converter will exhibit  
stable operation with external load capacitance up  
to 10,000 µF on 3.3 V and 4,700uF on 5 V output.  
The converter’s output voltages can be adjusted  
simultaneously up 10% or down 10% relative to  
the rated output voltages by the addition of an  
externally connected resistor.  
The TRIM pin should be left open if trimming is  
not being used. To minimize noise pickup, a 0.1  
µF capacitor is connected internally between the  
TRIM and RETURN pins.  
ON/OFF (Pin 2)  
Vin (+)  
ON/OFF  
Vin (-)  
Vout2 (+)  
TRIM  
The ON/OFF pin is used to turn the power  
converter on or off remotely via a system signal.  
There are two remote control options available,  
positive logic and negative logic and both are  
referenced to Vin(-). Typical connections are  
shown in Fig. 11.  
R T-INCR  
(Top View)  
Rload  
Rload  
Vin  
RTN  
Vout1 (+)  
Fig. 12. Configuration for Increasing Output Voltage  
Vin (+)  
ON/OFF  
Vin (-)  
Vout2 (+)  
TRIM  
To increase the output voltage (refer to Fig. 12), a  
(Top View)  
Rload2  
Rload1  
trim resistor, RT-INCR  
,
should be connected  
Vin  
RTN  
between the TRIM (Pin 6) and RETURN (Pin 5),  
with a value from the tables below.  
Vout1 (+)  
CONTROL  
NPUT  
Vin (+)  
ON/OFF  
Vin (-)  
Vout2 (+)  
TRIM  
Fig. 11. Circuit Configuration for ON/OFF Function  
R T-DECR  
Rload  
Rload  
(Top View)  
Vin  
The positive logic version turns on when the  
ON/OFF pin is at logic high and turns off when at  
logic low. The converter is on when the ON/OFF  
RTN  
Vout1 (+)  
pin is left open.  
The negative logic version turns on when the pin  
is at logic low and turns off when the pin is at logic  
high. The ON/OFF pin can be hard wired directly  
to Vin(-) to enable automatic power up of the  
converter without the need of an external control  
signal.  
Fig. 13A. Configuration for Decreasing Output  
Voltage  
To decrease the output voltage, a trim resistor R  
T-  
DECR, (Fig. 13A) should be connected between the  
TRIM (Pin 6) and Vout1(+) pin (Pin 4), with a  
value from the tables below, where:  
A mechanical switch, open collector transistor, or  
FET can be used to drive the input of the ON/OFF  
pin. The device must be capable of sinking up to  
?
=
percentage of increase or decrease  
Vout(NOM).  
Rev. NOV 13, 2002  
Page 8 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Models using the trim configuration shown in  
figure 13A include: Q2D25ZGE, Q2D25ZGB,  
Q2D30ZED.  
Trim Resistor  
(Vout Increase)  
Trim Resistor  
(Vout Decrease)  
? [%]  
RT-INCR [kO]  
? [%]  
RT-DECR [kO]  
1
2
46.4  
20.5  
12.1  
8.06  
5.23  
3.57  
2.21  
1.30  
0.604  
0
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
57.6  
25.5  
14.0  
8.87  
5.90  
3.83  
2.32  
1.30  
0.432  
0
T
M
Q Series  
Converter  
Vin (+)  
ON/OFF  
Vin (-)  
Vout2 (+)  
TRIM  
Rload2  
Rload1  
(Top View)  
3
4
5
R T-DECR  
Vin  
RTN  
Vout1 (+)  
6
7
8
Fig. 13B. Configuration for decreasing output  
voltage  
9
10  
To decrease the output voltage, a trim resistor R  
T-  
Table B. Use for models: Q2D30ZED, Q2D30ZDB  
DEC R, (Fig. 13B) should be connected between the  
TRIM (Pin 6) and Vout2(+) pin (Pin 7), with a  
value from the table below, where:  
Trim Resistor  
Trim Resistor  
(Vout Increase)  
(Vout Decrease)  
? [%]  
RT-INCR [kO]  
? [%]  
RT-DECR [kO]  
?
=
percentage of increase or decrease  
Vout(NOM).  
1
2
3
60.4  
29.4  
19.6  
14.3  
11.3  
9.31  
7.87  
6.81  
5.90  
5.23  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
28.7  
13.3  
8.45  
5.90  
4.32  
3.40  
2.67  
2.10  
1.69  
1.37  
Models using the trim configuration shown in  
figure 13B include: Q2D30ZEB, Q2D30ZEY,  
Q2D30ZDB, Q2D30ZBA.  
4
5
6
7
Note 1: Both outputs are trimmed up or down  
simultaneously.  
8
9
10  
Trim Resistor  
(Vout Increase)  
Trim Resistor  
(Vout Decrease)  
? [%]  
RT-INCR [kO]  
? [%]  
RT-DECR [kO]  
Table C. Use for models Q2D30ZBA  
1
2
3
54.9  
24.9  
14.3  
9.31  
6.34  
4.32  
2.80  
1.69  
0.825  
0
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
68.1  
30.1  
17.8  
11.5  
7.68  
5.36  
3.48  
2.10  
1.05  
0
Note 2: The above trim resistor values match  
those typically used in industry-standard dual  
quarter bricks.  
4
5
6
7
Input Under-Voltage Lockout  
8
9
10  
Input under-voltage lockout is standard with this  
converter. The converter will shut down when the  
input voltage drops below  
voltage.  
a
predetermined  
Table A. Use for models: Q2D25ZGE,  
Q2D25ZGB, Q2D30ZEB, Q2D30ZEY.  
The input voltage must be at least 35V for the  
converter to turn on. Once the converter has been  
turned on, it will shut off when the input voltage  
drops below 31V. This feature is beneficial in  
preventing deep discharging of batteries used in  
telecom applications.  
Rev. NOV 13, 2002  
Page 9 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Output Over-Current Protection (OCP)  
UL60950 and EN60950. Basic Insulation is  
provided between input and output.  
The converter is protected against over-current or  
short circuit conditions on both outputs. Upon  
sensing an over-current condition, the converter  
will switch to constant current operation and  
thereby begin to reduce output voltages. If, due  
to current limit, the output voltage Vout1 (3.3V)  
drops, than Vout2 (5.0V) will follow Vout1 with  
less than 1V difference. Drop on Vout2 output  
due to current limit will not affect voltage on  
Vout1. For further load increase, if either Vout1  
drops below 1 Vdc or Vout2 drops below 2 Vdc,  
the converter will shut down.  
To comply with safety agencies requirements, an  
input line fuse must be used external to the  
converter. A 5-A fuse is recommended for use  
with this product.  
Electromagnetic Compatibility (EMC)  
EMC requirements must be met at the end-  
product system level, as no specific standards  
dedicated to EMC characteristics of board  
mounted component DC/DC converters exist.  
However, Power-One tests its converters to  
several system level standards, primary of which  
is the more stringent EN55022, Information  
Once the converter has shut down, it will attempt  
to restart nominally every 100ms with a 2% duty  
cycle. The attempted restart will continue  
indefinitely until the overload or short circuit  
conditions are removed or the output voltage  
Vout1 rises above 1 Vdc and Vout2 above 2 Vdc.  
technology equipment  
-
Radio disturbance  
characteristics  
-
Limits and methods of  
measurement.  
With the addition of a simple external filter (see  
application notes), all versions of the Q2D family  
of converters pass the requirements of Class B  
conducted emissions per EN55022 and FCC, and  
meet at a minimum, Class A radiated emissions  
per EN 55022 and Class B per FCC Title 47CFR,  
Output Over-Voltage Protection (OVP)  
The converter will shut down if the output voltage  
across either Vout1(+) (Pin 4) or Vout2(+) (Pin 7)  
and RETURN (Pin 5) exceeds the threshold of the  
OVP circuitry. The OVP protection is separate for  
Vout1 and Vout2 with their own reference  
independent of the output voltage regulation  
loops. Once the converter has shut down, it will  
attempt to restart every 100ms until the OVP  
condition is removed.  
Part 15-J.  
Please contact Power-One  
Applications Engineering for testing details.  
Thermal Considerations  
The Q2D series converters are designed for  
Over-Temperature Protection (OTP)  
natural or forced convection cooling.  
The  
maximum available output power of the  
converters is determined by the maximum  
semiconductor junction temperature. To provide  
reliable long-term operation of the converters,  
Power-One limits maximum allowable junction  
temperature to 120°C.  
The converter will shut down under an over-  
temperature condition to protect itself from  
overheating caused by operation outside the  
thermal derating curves, or operation in abnormal  
conditions such as system fan failure.  
The over-temperature protection circuit turns the  
converter off when the temperature at a sensed  
location reaches 120°C (typical). Once the  
converter has shut down, it will restart when the  
temperature at the sensed location falls below  
110°C.  
The graphs in Figures 14-20 show the maximum  
output current of the Q2D series converters at  
different local ambient temperatures at both  
natural and forced (longitudinal airflow direction,  
from pin 3 to pin 4) convection.  
Safety Requirements  
The converters meet North American and  
International safety regulatory requirements per  
Rev. NOV 13, 2002  
Page 10 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Iout1=Iout2 for all derating curves.  
20.0  
17.5  
15.0  
12.5  
10.0  
7.5  
120  
110  
100  
90  
80  
70  
500 LFM (2.5 m/s)  
400 LFM (2.0 m/s)  
300 LFM (1.5 m/s)  
200 LFM (1.0 m/s)  
100 LFM (0.5 m/s)  
0 LFM (0 m/s)  
60  
500 LFM (2.5 m/s)  
50  
400 LFM (2.0 m/s)  
40  
30  
20  
10  
0
300 LFM (1.5 m/s)  
200 LFM (1.0 m/s)  
100 LFM (0.5 m/s)  
0 LFM (0 m/s)  
5.0  
2.5  
0.0  
20  
30  
40  
50  
60  
70  
80  
90  
20  
30  
40  
50  
60  
70  
80  
90  
Ambient Temperature [°C]  
Ambient Temperature [°C]  
Fig.17. Q2D30ZED (3.3V/2.5V) Derating Curves  
Fig.14. Q2D25ZGE (5.0V/3.3V) Derating  
Curves  
20.0  
17.5  
15.0  
12.5  
20.0  
17.5  
15.0  
12.5  
10.0  
500 LFM (2.5 m/s)  
400 LFM (2.0 m/s)  
7.5  
300 LFM (1.5 m/s)  
10.0  
200 LFM (1.0 m/s)  
100 LFM (0.5 m/s)  
500 LFM (2.5 m/s)  
5.0  
400 LFM (2.0 m/s)  
7.5  
0 LFM (0 m/s)  
2.5  
300 LFM (1.5 m/s)  
200 LFM (1.0 m/s)  
100 LFM (0.5 m/s)  
5.0  
0.0  
0 LFM (0 m/s)  
2.5  
20  
30  
40  
50  
60  
70  
80  
90  
Ambient Temperature [°C]  
0.0  
20  
30  
40  
50  
60  
70  
80  
90  
Fig.18. Q2D30ZEB (3.3V/1.8V) Derating Curves  
Ambient Temperature [°C]  
20.0  
17.5  
15.0  
12.5  
Fig.15. Q2D25ZGD (5.0V/2.5V) Derating  
Curves  
100  
90  
80  
70  
60  
10.0  
500 LM 5 m/s)  
400 LFM 0 m/s)  
7.5  
300 LFM 5 m/s)  
200 LFM 0 m/s)  
100 LFM 5 m/s)  
5.0  
50  
0 LFM (0 m/s)  
2.5  
500 LFM (2.5 m/s)  
400 LFM (2.0 m/s)  
40  
300 LFM (1.5 m/s)  
200 LFM (1.0 m/s)  
0.0  
30  
20  
30  
40  
50  
60  
70  
80  
90  
100 LFM (0.5 m/s)  
20  
0 LFM (0 m/s)  
Ambient Temperature [°C]  
10  
Fig.19. Q2D30ZDB (2.5V/1.8V) Derating  
Curves  
0
20  
30  
40  
50  
60  
70  
80  
90  
Ambient Temperature [°C]  
Fig.16. Q2D25ZGB (5.0V/1.8V) Derating  
Curves  
Rev. NOV 13, 2002  
Page 11 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
20.0  
17.5  
15.0  
12.5  
10.0  
500 LFM (2.5 m/s)  
400 LFM (2.0 m/s)  
7.5  
300 LFM (1.5 m/s)  
200 LFM (1.0 m/s)  
100 LFM (0.5 m/s)  
5.0  
0 LFM (0 m/s)  
2.5  
0.0  
20  
30  
40  
50  
60  
70  
80  
90  
Ambient Temperature [°C]  
Fig.20. Q2D30ZEY (3.3V/1.2V) Derating Curves  
Rev. NOV 13, 2002  
Page 12 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Physical Information (Through-Hole option)  
4
5
6
7
3
2
1
BOTTOM VIEW  
SIDE VIEW  
Pin Connections  
All dimensions are in inches [mm]  
All pins are Ø 0.040”[1.02] with Ø  
0.078” [1.98] shoulder  
Pin #  
Function  
Vin (+)  
1
2
3
4
5
6
7
Pin material: Brass  
Pin Finish: Tin/Lead over Nickel  
Converter weight: 0.90 oz. [25.5 g]  
ON/OFF  
Vin (-)  
Vout1 (+)  
RTN [Vout1(-) and Vout2(-)]  
TRIM  
Vout2 (+)  
HT  
CL  
PL  
(Maximum Height)  
(Minimum Clearance)  
Pin Length  
Pin  
Option  
Height  
Option  
+0.000 [+0.00]  
-0.038 [- 0.97]  
0.303 [7.69]  
0.336 [8.53]  
0.400 [10.16]  
0.500 [12.70]  
+0.030 [+0.77]  
-0.000 [- 0.00]  
0.030 [ 0.77]  
0.063 [1.600]  
0.127 [3.23]  
±0.005  
[±0.13]  
0.188 [4.77]  
0.145 [3.68]  
0.110 [2.79]  
blank  
C2  
C3  
7
8
C4  
0.227 [5.77]  
Rev. NOV 13, 2002  
Page 13 of 14  
Q2D Series – Quarter-Brick DC/DC Converter  
48V Input  
Data Sheet  
Dual Output  
Physical Information (Surface Mount option)  
4
5
3
2
1
BOTTOM VIEW  
6
7
SIDE VIEW  
All dimensions are in inches [mm]  
Connector material: Copper  
Connector Finish: Gold over Nickel  
Converter weight: 0.90 oz. [25.5 g]  
Recommended Surface-Mount Pads:  
Min. 0.080” x 0.112” [2.03 x 2.84]  
Max. 0.092” x 0.124” [2.34 x 3.15]  
Pin Connections  
Pin #  
Function  
Vin (+)  
ON/OFF  
Vin (-)  
Vout1 (+)  
1
2
3
4
5
6
7
RTN [Vout1(-) and Vout2(-)]  
TRIM  
Vout2 (+)  
Notes  
1. Consult factory for the complete list of available options.  
2. Power-One products are not authorized for use as critical components in life support systems,  
equipment used in hazardous environments, or nuclear control systems without the express written  
consent of the respective divisional president of Power-One, Inc.  
3. The appearance of products, including safety agency certifications pictured on labels, may change  
depending on the date manufactured. Specifications are subject to change without notice.  
4. Valid output voltage combinations  
Vout2  
5.0V  
3.3V  
2.5V  
Vout1 (Given Vout2 listed below are the Vout1 possibilities)  
3,3, 2.5, 1.8  
2.5, 1.8, 1.2  
1.8  
Rev. NOV 13, 2002  
Page 14 of 14  

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