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PKU4319PILB [ERICSSON]

DC-DC Regulated Power Supply Module, 1 Output, 37.5W, Hybrid, ROHS COMPLIANT PACKAGE-8;
PKU4319PILB
型号： PKU4319PILB
厂家： ERICSSON    ERICSSON
描述：

DC-DC Regulated Power Supply Module, 1 Output, 37.5W, Hybrid, ROHS COMPLIANT PACKAGE-8
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E
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Key Features  
Industry standard Sixteenth-brick  
33.02 x 22.86 x 9.90 mm (1.3 x 0.9 x 0.39 in.)  
Wide output adjust, e.g. 3.3V +10/-40%  
1500 Vdc input to output isolation  
Meets isolation requirements equivalent to basic  
insulation according to IEC/EN/UL 60950-1  
More than 3.5 million hours MTBF  
General Characteristics  
Pre-biased start-up capability  
Output over voltage protection  
Input under voltage shut-down  
Over temperature protection  
Monotonic start-up  
Output short-circuit protection  
Remote sense  
Remote control  
Safety Approvals  
Design for Environment  
Output voltage adjust function  
Highly automated manufacturing ensures quality  
ISO 9001/14001 certified supplier  
Meets requirements in high-  
temperature lead-free soldering  
processes.  
Contents  
Ordering Information  
General Information  
Safety Specification  
............................................................. 2  
............................................................. 2  
............................................................. 3  
............................................................. 4  
Absolute Maximum Ratings  
Electrical Specification  
1.2V, 25A / 30W  
1.5V, 25A / 37.5W  
1.8V, 25A / 45W  
2.5V, 15A / 37.5W  
3.3V, 15A / 50W  
5.0V, 10A / 50W  
PKU 4318L .......................................... 5  
PKU 4318H........................................... 9  
PKU 4418G ........................................ 13  
PKU 4319 ........................................... 17  
PKU 4510 ........................................... 21  
PKU 4511 ........................................... 25  
PKU 4513 ........................................... 29  
PKU 4515 ........................................... 33  
12.0V, 4.2A / 50W  
15.0V, 3.3A / 50W  
EMC Specification  
........................................................... 37  
........................................................... 38  
........................................................... 40  
........................................................... 41  
........................................................... 43  
........................................................... 45  
........................................................... 45  
........................................................... 46  
Operating Information  
Thermal Consideration  
Connections  
Mechanical Information  
Soldering Information  
Delivery Information  
Product Qualification Specification  
E
2
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Compatibility with RoHS requirements  
Ordering Information  
The products are compatible with the relevant clauses and  
requirements of the RoHS directive 2002/95/EC and have a  
maximum concentration value of 0.1% by weight in  
homogeneous materials for lead, mercury, hexavalent  
chromium, PBB and PBDE and of 0.01% by weight in  
homogeneous materials for cadmium.  
Product program  
PKU 4318L  
PKU 4318H  
PKU 4418G  
PKU 4319  
PKU 4510  
PKU 4511  
PKU 4513  
PKU 4515  
Output  
1.2 V, 25 A / 30 W  
1.5 V, 25 A / 38 W  
1.8 V, 25 A / 45 W  
2.5 V, 15 A / 38 W  
3.3 V, 15 A / 50 W  
5.0 V, 10 A / 50 W  
12 V, 4.2 A / 50 W  
15 V, 3.3 A / 50 W  
Exemptions in the RoHS directive utilized in Ericsson  
Power Modules products include:  
-
Lead in high melting temperature type solder (used to  
solder the die in semiconductor packages)  
Lead in glass of electronics components and in  
electronic ceramic parts (e.g. fill material in chip  
resistors)  
Product number and Packaging  
-
PKU 4XXXX n1n2n3n4  
Options  
Mounting  
n1 n2 n3 n4  
-
Lead as an alloying element in copper alloy containing  
up to 4% lead by weight (used in connection pins  
made of Brass)  
Remote Control logic  
Lead length  
Delivery package information  
Options  
n1  
Description  
Quality Statement  
The products are designed and manufactured in an  
industrial environment where quality systems and methods  
like ISO 9000, 6σ (sigma), and SPC are intensively in use  
to boost the continuous improvements strategy. Infant  
mortality or early failures in the products are screened out  
and they are subjected to an ATE-based final test.  
Conservative design rules, design reviews and product  
qualifications, plus the high competence of an engaged  
work force, contribute to the high quality of our products.  
PI  
SI  
Through hole  
Surface mount  
n2  
n3  
Negative *  
Positive  
P
5.30 mm *  
3.69 mm  
4.57 mm  
LA  
LB  
n4  
/B  
/C  
Tray  
Tape and Reel (only for surface  
mount products)  
Warranty  
Warranty period and conditions are defined in Ericsson  
Power Modules General Terms and Conditions of Sale.  
Example a through-hole mounted, negative logic, short pin  
product with tray packaging would be PKU 4510 PILA/B.  
Limitation of Liability  
* Standard variant (i.e. no option selected).  
Ericsson Power Modules does not make any other  
warranties, expressed or implied including any warranty of  
merchantability or fitness for a particular purpose  
(including, but not limited to, use in life support  
applications, where malfunctions of product can cause  
injury to a person’s health or life).  
General Information  
Reliability  
The failure rate () and mean time between failures  
(MTBF= 1/) is calculated at max output power and an  
operating ambient temperature (TA) of +40°C. Ericsson  
Power Modules uses Telcordia SR-332 Issue 2 Method 1 to  
calculate the mean steady-state failure rate and standard  
© Ericsson AB 2009  
The information and specifications in this technical  
specification is believed to be correct at the time of  
publication. However, no liability is accepted for  
inaccuracies, printing errors or for any consequences  
thereof. Ericsson AB reserves the right to change the  
contents of this technical specification at any time without  
prior notice.  
deviation ().  
Telcordia SR-332 Issue 2 also provides techniques to  
estimate the upper confidence levels of failure rates based  
on the mean and standard deviation.  
Mean steady-state failure rate,   
Std. deviation,   
283 nFailures/h  
37.7 nFailures/h  
MTBF (mean value) for the PKU series = 3.5 Mh.  
MTBF at 90% confidence level = 3.0 Mh  
E
3
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Isolated DC/DC converters  
Safety Specification  
General information  
It is recommended that a slow blow fuse is to be used at  
the input of each DC/DC converter. If an input filter is used  
in the circuit the fuse should be placed in front of the input  
filter.  
In the rare event of a component problem that imposes a  
short circuit on the input source, this fuse will provide the  
following functions:  
Ericsson Power Modules DC/DC converters and DC/DC  
regulators are designed in accordance with safety  
standards IEC/EN/UL 60950-1 Safety of Information  
Technology Equipment.  
IEC/EN/UL 60950-1 contains requirements to prevent injury  
or damage due to the following hazards:  
Isolate the fault from the input power source so as  
not to affect the operation of other parts of the  
system.  
Protect the distribution wiring from excessive  
current and power loss thus preventing hazardous  
overheating.  
Electrical shock  
Energy hazards  
Fire  
Mechanical and heat hazards  
Radiation hazards  
Chemical hazards  
The galvanic isolation is verified in an electric strength test.  
The test voltage (Viso) between input and output is  
1500 Vdc or 2250 Vdc (refer to product specification).  
On-board DC/DC converters and DC/DC regulators are  
defined as component power supplies. As components  
they cannot fully comply with the provisions of any safety  
requirements without “Conditions of Acceptability”.  
Clearance between conductors and between conductive  
parts of the component power supply and conductors on  
the board in the final product must meet the applicable  
safety requirements. Certain conditions of acceptability  
apply for component power supplies with limited stand-off  
(see Mechanical Information for further information). It is  
the responsibility of the installer to ensure that the final  
product housing these components complies with the  
requirements of all applicable safety standards and  
regulations for the final product.  
24 V DC systems  
The input voltage to the DC/DC converter is SELV (Safety  
Extra Low Voltage) and the output remains SELV under  
normal and abnormal operating conditions.  
48 and 60 V DC systems  
If the input voltage to the DC/DC converter is 75 Vdc or  
less, then the output remains SELV (Safety Extra Low  
Voltage) under normal and abnormal operating conditions.  
Single fault testing in the input power supply circuit should  
be performed with the DC/DC converter connected to  
demonstrate that the input voltage does not exceed  
75 Vdc.  
Component power supplies for general use should comply  
with the requirements in IEC 60950-1, EN 60950-1 and  
UL 60950-1 Safety of Information Technology Equipment.  
There are other more product related standards, e.g.  
IEEE 802.3 CSMA/CD (Ethernet) Access Method, and  
ETS-300132-2 Power supply interface at the input to  
telecommunications equipment, operated by direct current  
(dc), but all of these standards are based on  
If the input power source circuit is a DC power system, the  
source may be treated as a TNV-2 circuit and testing has  
demonstrated compliance with SELV limits in accordance  
with IEC/EN/UL60950-1.  
Non-isolated DC/DC regulators  
IEC/EN/UL 60950-1 with regards to safety.  
The input voltage to the DC/DC regulator is SELV (Safety  
Extra Low Voltage) and the output remains SELV under  
normal and abnormal operating conditions.  
Ericsson Power Modules DC/DC converters and DC/DC  
regulators are UL 60950-1 recognized and certified in  
accordance with EN 60950-1.  
The flammability rating for all construction parts of the  
products meet requirements for V-0 class material  
according to IEC 60695-11-10, Fire hazard testing, test  
flames – 50 W horizontal and vertical flame test methods.  
The products should be installed in the end-use equipment,  
in accordance with the requirements of the ultimate  
application. Normally the output of the DC/DC converter is  
considered as SELV (Safety Extra Low Voltage) and the  
input source must be isolated by minimum Double or  
Reinforced Insulation from the primary circuit (AC mains) in  
accordance with IEC/EN/UL 60950-1.  
E
4
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Absolute Maximum Ratings  
Characteristics  
min  
-45  
typ  
max  
+120  
+125  
+80  
1500  
100  
25  
Unit  
°C  
°C  
V
TP1  
TS  
Operating Temperature (see Thermal Consideration section)  
Storage temperature  
-55  
VI  
Input voltage  
-0.5  
Viso  
Vtr  
Isolation voltage (input to output test voltage)  
Input voltage transient (tp 100 ms)  
Vdc  
V
Positive logic option  
Negative logic option  
-0.5  
-0.5  
-0.5  
V
Remote Control pin voltage  
(see Operating Information section)  
VRC  
Vadj  
25  
V
Adjust pin voltage (see Operating Information section)  
6
V
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as no destruction limits, are  
normally tested with one parameter at a time exceeding the limits in the Electrical Specification. If exposed to stress above these limits, function and performance  
may degrade in an unspecified manner.  
Fundamental Circuit Diagram  
Primary  
Secondary  
+ In  
+ Out  
+ Sense  
Primary  
Driver  
Secondary  
Driver  
- Sense  
- Out  
Control and  
Supervision  
Vadj  
Bias supply  
and OTP  
Isolated  
Feedback  
RC  
- In  
E
5
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
1.2 V, 25 A / 30 W  
PKU 4318L PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
33  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
30  
W
50% of max IO  
83.5  
82.5  
84  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
83  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
6.3  
10  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
1.8  
0.13  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 25 A  
1.176  
1.20  
1.224  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information  
0-100% of max IO  
IO = 0 A  
1.00  
1.16  
1.18  
1.32  
1.24  
1.22  
12  
V
V
VO  
V
Line regulation  
max IO  
5
5
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
10  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 7 A/µs  
Vtr  
ttr  
±160  
25  
±250  
50  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
5
9
6
7
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
10  
11  
ms  
max IO  
0.05  
0.1  
0.0007  
5
0.2  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 2.5 A  
max IO  
0.0003  
0.001  
RC start-up time  
ms  
tRC  
max IO  
0.5  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 2.5 A  
0.0005  
s
IO  
Output current  
0
25  
35  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
26  
31  
20  
70  
TP1 = 25ºC, see Note 2  
See ripple & noise section, VOi  
A
VOac  
130  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
1.55  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
6
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.2 V, 25 A /30 W  
PKU 4318L PI  
Efficiency  
Power Dissipation  
[%]  
90  
[W]  
10  
8
6
4
2
0
85  
80  
75  
70  
65  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
5
10  
15  
2 0  
2 5  
[A]  
0
5
10  
15  
20  
25 [A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
1. 3 0  
2.00  
1. 2 5  
1. 2 0  
1. 15  
1. 10  
1.50  
1.00  
0.50  
0.00  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
16 18 20 22 24 26 28 30 32 [A]  
0
5
10  
15  
2 0  
2 5  
[A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
7
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.2 V, 25 A / 30 W  
PKU 4318L PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (5 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.s).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (6.25-18.75-6.25 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (10 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by using the  
following equations:  
The output voltage may be adjusted using a voltage applied to the Vadj pin.  
This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired −1.20 ⎞  
⎟ V  
Vadj = 5.11×⎜0.118 + 0.235×  
⎜
⎟
⎛ 5.11×1.20  
Radj = ⎜  
(
100 + ∆%  
)
511  
⎞
1.20  
⎝
⎠
−
−10.22⎟ kΩ  
⎜
⎟
0.6× ∆%  
∆%  
⎝
⎠
Example: Upwards => 1.30 V  
Example: Increase 4% =>Vout = 1.248Vdc  
⎛
1.30 −1.20 ⎞  
5.11× ⎜0.118 + 0.235×  
⎟ V = 0.70 V  
⎜
⎟
⎛ 5.11×1.20  
(
100 + 4  
)
511  
4
⎞
1.20  
⎝
⎠
⎜
⎜
−
−10.22⎟ kΩ = 128 kΩ  
⎟
0.6× 4  
⎝
⎠
Example: Downwards => 1.0 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
1.0 −1.20 ⎞  
5.11×⎜0.118 + 0.235×  
⎟ V = 0.40 V  
⎜
⎟
⎛ 511⎞  
1.20  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 1.176 Vdc  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
8
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.2 V, 25 A / 30 W  
PKU 4318L PI  
Output Current Derating – Open frame  
[A]  
30  
3.0 m/s  
25  
20  
15  
10  
5
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
0
20  
40  
60  
80  
100 [°C]  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
9
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
1.5 V, 25 A / 37.5 W  
PKU 4318H PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
Unit  
V
VI  
Input voltage range  
75  
33  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
37.5  
CI  
Internal input capacitance  
Output power  
0.5  
μF  
PO  
0
W
50% of max IO  
86  
85  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
86  
85  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
6.7  
2
10  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 25 A  
1.47  
1.50  
1.53  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information  
0-100% of max IO  
IO = 0 A  
1.00  
1.455  
1.48  
1.65  
1.545  
1.52  
12  
V
V
VO  
V
Line regulation  
max IO  
5
5
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
10  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 7 A/μs  
Vtr  
ttr  
±120  
15  
±250  
50  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
3.5  
5
6
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
7
9
10  
ms  
max IO  
0.05  
0.1  
0.0007  
5
0.2  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 2.5 A  
max IO  
RC start-up time  
ms  
tRC  
max IO  
0.6  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 2.5 A  
0.00065  
s
IO  
Output current  
0
25  
35  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
26  
31  
20  
80  
TP1 = 25ºC, see Note 2  
See ripple & noise section, VOi  
A
VOac  
150  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
1.9  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
10  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.5 V, 25 A / 37.5 W  
PKU 4318H PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
10  
8
6
4
2
0
90  
85  
80  
75  
70  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
5
10  
15  
20  
25  
0
5
10  
15  
20  
25  
[A]  
[A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
1. 6 0  
2.00  
1. 5 5  
1. 5 0  
1. 4 5  
1. 4 0  
1. 5 0  
1. 0 0  
36 V  
36 V  
48 V  
53 V  
75 V  
48 V  
53 V  
75 V  
0.50  
0.00  
0
5
10  
15  
2 0  
2 5  
[A]  
16  
18  
20  
22  
24  
26  
28  
30  
32  
[A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
11  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.5 V, 25 A / 37.5 W  
PKU 4318H PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (20 V/div.).  
Time scale: (5 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.s).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (6.25-18.75-6.25 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (10 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by  
using the following equations:  
The output voltage may be adjusted using a voltage applied to the  
Vadj pin. This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired −1.50 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45×  
⎜
⎟
⎛ 5.11×1.50  
(
100 + Δ%  
)
511  
⎞
1.50  
⎝
⎠
Radj = ⎜  
−
−10.22⎟ kΩ  
⎜
⎟
1.225×Δ%  
Δ%  
⎝
⎠
Example: Upwards => 1.60 V  
Example: Increase 4% =>Vout = 1.56 Vdc  
⎛
1.60 −1.50 ⎞  
⎜1.225 + 2.45×  
⎟ V = 1.39 V  
⎜
⎟
⎛ 5.11×1.50  
(
100 + 4  
)
511  
4
⎞
1.50  
⎝
⎠
−
−10.22⎟  
kΩ = 24.7 kΩ  
⎜
⎜
⎟
1.225× 4  
⎝
⎠
Example: Downwards => 1.0 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
1.00 −1.50 ⎞  
V = 0.41 V  
⎜1.225 + 2.45×  
⎟
⎟
⎜
⎛ 511⎞  
1.50  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
Δ%  
⎝
⎠
Example: Decrease 2% =>Vout = 1.47 Vdc  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
12  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.5 V, 25 A / 37.5 W  
PKU 4318H PI  
Output Current Derating – Open frame  
[A]  
30  
3.0 m/s  
25  
20  
15  
10  
5
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
0
20  
40  
60  
80  
100 [°C]  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
13  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
1.8 V, 25 A / 45 W  
PKU 4418G PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
Unit  
V
VI  
Input voltage range  
75  
33  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
45  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
W
50% of max IO  
86.4  
86.0  
86.8  
86.3  
7.3  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
11.5  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
2.4  
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 25 A  
1.764  
1.800  
1.836  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information  
0-100% of max IO  
IO = 0 A  
1.00  
1.75  
1.77  
1.98  
1.85  
1.82  
12  
V
V
VO  
V
Line regulation  
max IO  
5
4
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
10  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 7 A/µs  
Vtr  
ttr  
±120  
20  
±250  
50  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
3.5  
7
5
6
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
9
10  
ms  
max IO  
0.05  
0.1  
0.0007  
7
0.2  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 2.5 A  
max IO  
0.0003  
0.001  
RC start-up time  
ms  
tRC  
max IO  
0.2  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 2.5 A  
0.0007  
s
IO  
Output current  
0
25  
35  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
26  
31  
20  
85  
TP1 = 25ºC, see Note 2  
See ripple & noise section, VOi  
A
VOac  
150  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
2.2  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
14  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.8 V, 25 A / 45 W  
PKU 4418G PI  
Efficiency  
Power Dissipation  
[%]  
90  
[W]  
10  
8
6
4
2
0
85  
80  
75  
70  
65  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
5
10  
15  
2 0  
2 5  
[A]  
0
5
10  
15  
2 0  
2 5  
[A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
1.90  
2.00  
1.50  
1.00  
0.50  
0.00  
1.85  
1.80  
1.75  
1.70  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
12  
16  
20  
24  
28  
32 [A]  
0
5
10  
15  
20  
25 [A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
15  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.8 V, 25 A / 45 W  
PKU 4418G PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (20 V/div.).  
Time scale: (5 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Top trace: output voltage (0.5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.s).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 25 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (6.25-18.75-6.25 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (10 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by using the  
following equations:  
The output voltage may be adjusted using a voltage applied to the Vadj pin.  
This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired −1.80 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45×  
(
100 + ∆%  
)
−
511  
⎞
⎜
⎟
⎛ 5.11×1.80  
1.80  
Radj = ⎜  
−10.22⎟ kΩ  
⎝
⎠
⎜
⎟
1.225×∆%  
∆%  
⎝
⎠
Example: Upwards => 1.90 V  
Example: Increase 4% =>Vout = 1.872 V  
⎛
1.90 −1.80 ⎞  
⎜1.225 + 2.45×  
⎟ V = 1.36 V  
⎛ 5.11×1.80  
(
100 + 4  
)
511  
4
⎞
⎜
⎟
1.80  
⎜
⎜
−
−10.22⎟  
kΩ = 57 kΩ  
⎝
⎠
⎟
1.225× 4  
⎝
⎠
Example: Downwards => 1.0 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
1.00 −1.80 ⎞  
V = 0.14 V  
⎜1.225 + 2.45×  
⎟
⎟
⎛ 511⎞  
⎜
1.80  
Radj = ⎜  
⎟ − 10.22 kΩ  
⎝
⎠
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 1.764 V  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
16  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
1.8 V, 25 A / 45 W  
PKU 4418G PI  
Output Current Derating – Open frame  
[A]  
30  
25  
20  
15  
10  
5
3.0 m/s  
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
[°C]  
100  
0
20  
40  
60  
80  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
17  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
2.5 V, 15 A / 37.5 W  
PKU 4319 PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
33  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
37.5  
8.5  
W
50% of max IO  
88.0  
87.3  
88.7  
87.6  
5.5  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
1.5  
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 15 A  
2.45  
2.50  
2.55  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information  
0-100% of max IO  
IO = 0 A  
1.90  
2.42  
2.45  
3.00  
2.58  
2.55  
10  
V
V
VO  
V
Line regulation  
max IO  
1
8
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
15  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 1 A/µs  
Vtr  
ttr  
±125  
20  
±250  
40  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
3.5  
7
4.0  
4.5  
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
8
9
ms  
max IO  
0.1  
0.2  
0.0013  
6
0.4  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 1.5 A  
max IO  
0.0009  
0.0015  
RC start-up time  
ms  
tRC  
max IO  
1
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 1.5 A  
0.0015  
s
IO  
Output current  
0
15  
22  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
16  
18  
13  
55  
TP1 = 25ºC, see Note 2  
See ripple & noise section, VOi  
A
VOac  
100  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
3.35  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
18  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
2.5 V, 15 A / 37.5 W  
PKU 4319 PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
8
90  
85  
80  
75  
70  
6
4
2
0
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
3
5
8
10  
13  
15 [A]  
0
3
5
8
10  
13  
15 [A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
2.60  
3.00  
2.50  
2.00  
1.50  
2.55  
2.50  
2.45  
2.40  
36 V  
48 V  
53 V  
75 V  
36V  
48V  
53V  
75V  
1.00  
0.50  
0.00  
8
10  
12  
14  
16  
18  
20 [A]  
0
3
5
8
10  
13  
15 [A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
19  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
2.5 V, 15 A / 37.5 W  
PKU 4319 PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Top trace: output voltage (1 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (2 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Top trace: output voltage (1 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (1 ms/div.s).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (3.75-11.25-3.75 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (5 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by using the  
following equations:  
The output voltage may be adjusted using a voltage applied to the Vadj pin. This  
voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired − 2.50 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45 ×  
⎛ 5.11× 2.50  
Radj = ⎜  
(
100 + ∆%  
)
511  
⎞
⎜
⎟
2.50  
−
− 10.22⎟ kΩ  
⎝
⎠
⎜
⎟
1.225 × ∆%  
∆%  
⎝
⎠
Example: Upwards => 2.75 V  
Example: Increase 4% =>Vout = 2.60 Vdc  
⎛
2.75 − 2.50 ⎞  
⎜1.225 + 2.45 ×  
⎟ V = 1.47 V  
⎛ 5.11× 2.50  
(
100 + 4  
)
511  
4
⎞
⎟
⎜
⎟
2.50  
⎜
⎜
−
− 10.22⎟ kΩ = 133 kΩ  
⎝
⎠
1.225 × 4  
⎝
⎠
Example: Downwards => 2.25 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
2.25 − 2.50 ⎞  
⎟ V = 0.98 V  
⎜1.225 + 2.45 ×  
⎛ 511⎞  
⎜
⎟
2.50  
Radj = ⎜  
⎟ − 10.22 kΩ  
⎝
⎠
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 2.45 Vdc  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
20  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
2.5 V, 15 A / 37.5 W  
PKU 4319 PI  
Output Current Derating – Open frame  
[A]  
20  
15  
10  
5
3.0 m/s  
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
[°C]  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
21  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
3.3 V, 15 A / 50 W  
PKU 4510 PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
33  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
49.5  
9.5  
W
50% of max IO  
89.7  
89.2  
89.9  
89.3  
6.0  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
1.8  
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 15 A  
3.24  
3.30  
3.36  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information and note 2  
0-100% of max IO  
1.90  
3.20  
3.24  
3.63  
3.40  
3.36  
10  
V
V
VO  
IO = 0 A  
V
Line regulation  
max IO  
1
8
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
18  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 1 A/µs  
Vtr  
ttr  
-165/+150  
-330/+250  
mV  
µs  
Load transient recovery time  
20  
4
40  
Ramp-up time  
(from 10−90% of VOi)  
tr  
2.5  
6
4.6  
ms  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
8
9
ms  
max IO  
0.1  
0.2  
0.0014  
6
0.3  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 1.5 A  
max IO  
0.001  
0.0016  
RC start-up time  
ms  
tRC  
max IO  
1
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 1.5 A  
0.0015  
s
IO  
Output current  
0
15  
22  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
16  
18  
14  
60  
TP1 = 25ºC, see Note 3  
See ripple & noise section, VOi  
A
VOac  
100  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
4.35  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: VI min 38 V to obtain 3.63 V at 49.5 W output power.  
Note 3: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
22  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
3.3 V, 15 A / 50 W  
PKU 4510 PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
8
90  
85  
80  
75  
70  
6
4
2
0
36 V  
48 V  
53 V  
75 V  
36V  
48V  
53V  
75V  
0
3
6
9
12  
15 [A]  
0
3
6
9
12  
15 [A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
4.00  
3.40  
3.35  
3.00  
2.00  
1.00  
0.00  
36 V  
36 V  
48 V  
53 V  
75 V  
48 V  
53 V  
75 V  
3.30  
3.25  
3.20  
0
3
6
9
12  
15 [A]  
8
11  
14  
17  
20 [A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
23  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
3.3 V, 15 A / 50 W  
PKU 4510 PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Top trace: output voltage (1 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (2 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Top trace: output voltage (1 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (1 ms/div.).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 15 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (3.75 – 11.25 – 3.75 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (5 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by  
using the following equations:  
The output voltage may be adjusted using a voltage applied to the  
Vadj pin. This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired − 3.30 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 5.11× 3.30  
(
100 + ∆%  
)
511  
⎞
3.30  
⎝
⎠
⎜
⎜
⎟
Radj =  
−
−10.22 kΩ  
⎟
⎠
1.225× ∆%  
∆%  
⎝
Example: Upwards => 3.50 V  
Example: Increase 4% =>Vout = 3.432 Vdc  
⎛
3.50 − 3.30 ⎞  
⎜1.225 + 2.45 ×  
⎟ V = 1.37 V  
⎜
⎟
⎛ 5.11× 3.30  
(
100 + 4  
)
511  
4
⎞
⎟
3.30  
⎝
⎠
⎜
⎜
−
− 10.22⎟ kΩ = 220 kΩ  
1.225 × 4  
⎝
⎠
Example: Downwards => 3.10 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
3.10 − 3.30 ⎞  
⎟ V = 1.08 V  
⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 511⎞  
3.30  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 3.234 Vdc  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
24  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
3.3 V, 15 A / 50 W  
PKU 4510 PI  
Output Current Derating – Open frame  
[A]  
20  
3.0 m/s  
15  
10  
5
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
[°C]  
100  
0
20  
40  
60  
80  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
25  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
5.0 V, 10 A / 50 W  
PKU 4511 PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
33  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
34.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
50  
W
50% of max IO  
89.8  
89.6  
90.0  
89.8  
5.8  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
8.5  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
1.8  
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 10 A  
4.90  
5.00  
5.10  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information and note 2  
0-100% of max IO  
4.00  
4.85  
4.90  
5.50  
5.15  
5.10  
10  
V
V
VO  
IO = 0 A  
V
Line regulation  
max IO  
5
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
15  
22  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 1 A/µs  
Vtr  
ttr  
±250  
20  
±500  
45  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
2
6
4.5  
5.5  
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
8
10  
ms  
max IO  
IO = 1 A  
max IO  
0.1  
0.2  
0.0012  
5.5  
0.3  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
0.001  
0.0014  
RC start-up time  
ms  
tRC  
max IO  
0.8  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 1 A  
0.0011  
s
IO  
Output current  
0
10  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
10.5  
13.2  
8
15.4  
TP1 = 25ºC, see Note 3  
See ripple & noise section, VOi  
A
VOac  
50  
100  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
6.1  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: VI min 38 V to obtain 5.50 V at 50 W output power.  
Note 3: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
26  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
5.0 V, 10 A / 50 W  
PKU 4511 PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
8
90  
85  
80  
75  
70  
6
4
2
0
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
2
4
6
8
10 [A]  
0
2
4
6
8
10 [A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
5.10  
5.00  
4.00  
3.00  
2.00  
1.00  
0.00  
5.05  
5.00  
4.95  
4.90  
36 V  
36 V  
48 V  
53 V  
75 V  
48 V  
53 V  
75 V  
0
2
4
6
8
10 [A]  
6
8
10  
12  
14 [A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
27  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
5.0 V, 10 A / 50 W  
PKU 4511 PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 10 A resistive load.  
Top trace: output voltage (2 V/div.).  
Bottom trace: input voltage (20 V/div.).  
Time scale: (2 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 10 A resistive load.  
Top trace: output voltage (2 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 10 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (200 mV/div.).  
change (2.5 – 7.5 – 2.5 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (5 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by  
using the following equations:  
The output voltage may be adjusted using a voltage applied to the  
Vadj pin. This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired − 5.00 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 5.11× 5.0  
Radj = ⎜  
(
100 + ∆%  
)
511  
⎞
5.00  
⎝
⎠
−
− 10.22⎟ kΩ  
⎜
⎟
1.225 × ∆%  
∆%  
⎝
⎠
Example: Upwards => 5.30 V  
Example: Increase 3% =>Vout = 5.15 Vdc  
⎛
5.30 − 5.00 ⎞  
⎜1.225 + 2.45 ×  
⎟ V = 1.372 V  
⎜
⎟
⎛ 5.11× 5.0  
(100 + 3  
)
511  
3
⎞
⎟
5.00  
⎝
⎠
⎜
⎜
−
− 10.22⎟ kΩ = 535 kΩ  
1.225 × 3  
⎝
⎠
Example: Downwards => 4.80 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
4.80 − 5.00 ⎞  
⎟ V = 1.127 V  
⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 511⎞  
5.00  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 3% =>Vout = 4.85 Vdc  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 160 kΩ  
⎟
3
⎝
⎠
E
28  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
5.0 V, 10 A / 50 W  
PKU 4511 PI  
Output Current Derating – Open frame  
[A]  
12  
3.0 m/s  
10  
8
2.0 m/s  
1.5 m/s  
1.0 m/s  
6
4
2
0
0
20  
40  
60  
80  
100 [°C]  
Nat. Conv.  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
29  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
12 V, 4.17 A / 50 W  
PKU 4513 PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
29  
32  
31  
33  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
33.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
50  
W
50% of max IO  
88.5  
89.0  
89.5  
89.5  
6
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
9.5  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
2
0.15  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 4.17 A  
11.76  
12.00  
12.24  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information and note 2  
0-100% of max IO  
9.60  
11.64  
11.70  
13.20  
12.36  
12.30  
50  
V
V
VO  
IO = 0 A  
V
Line regulation  
max IO  
20  
20  
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
50  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 1 A/µs  
Vtr  
ttr  
±500  
14  
±1000  
50  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
8
11  
17  
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
13  
16  
22  
ms  
max IO  
0.1  
0.2  
0.0025  
14  
0.3  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 0.417 A  
max IO  
0.002  
0.003  
RC start-up time  
ms  
tRC  
max IO  
0.2  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 0.417 A  
0.0025  
s
IO  
Output current  
0
4.17  
6.5  
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
4.4  
5.3  
4.2  
60  
TP1 = 25ºC, see Note 3  
See ripple & noise section, VOi  
A
VOac  
120  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
15  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: VI min 38V to obtain 13.2V at 50W output power.  
Note 3: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
E
30  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
12 V, 4.17 A / 50 W  
PKU 4513 PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
10  
8
6
4
2
0
90  
85  
80  
75  
70  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
1
2
3
4
[A]  
[A]  
0
1
2
3
4
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
12.20  
12.00  
8.00  
4.00  
0.00  
12.10  
12.00  
11.90  
11.80  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
5.5 [A]  
0
1
2
3
4
[A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
31  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
12 V, 4.17 A / 50 W  
PKU 4513 PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 4.2 A resistive load.  
Top trace: output voltage (5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (5 ms/div.).  
Shut-down enabled by disconnecting VI at:  
TP1 = +25°C, VI = 53 V,  
IO = 4.2 A resistive load.  
Top trace: output voltage (5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.).  
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 4.2 A resistive load.  
Trace: output voltage (20 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (1 V/div.).  
change (1.05 - 3.15 - 1.05 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (1 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by  
using the following equations:  
The output voltage may be adjusted using a voltage applied to the  
Vadj pin. This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired −12.0 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45×  
⎜
⎟
⎛ 5.11×12.0  
(
100 + ∆%  
)
511  
⎞
12.0  
⎝
⎠
Radj = ⎜  
−
−10.22⎟ kΩ  
⎜
⎟
1.225×∆%  
∆%  
⎝
⎠
Example: Upwards => 12.5 V  
Example: Increase 4% =>Vout = 12.48 V  
⎛
12.5 −12.0 ⎞  
⎜1.225 + 2.45 ×  
⎟ V = 1.33 V  
⎜
⎟
⎛ 5.11×12.0  
(
100 + 4  
)
511  
4
⎞
12.0  
⎝
⎠
−
−10.22⎟  
kΩ = 1164 kΩ  
⎜
⎜
⎟
1.225 × 4  
⎝
⎠
Example: Downwards => 11.0 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
11.0 −12.0 ⎞  
V = 1.02 V  
⎜1.225 + 2.45×  
⎟
⎟
⎜
⎛ 511⎞  
12.0  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 11.76 V  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
32  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
12 V, 4.17 A / 50 W  
PKU 4513 PI  
Output Current Derating – Open frame  
[A]  
5
4
3
2
1
0
3.0 m/s  
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
20  
40  
60  
80  
100  
[°C]  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
33  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Electrical Specification  
15 V, 3.3 A / 50 W  
PKU 4515 PI  
TP1 = -30 to +110ºC, VI = 36 to 75 V, sense pins connected to output pins unless otherwise specified under Conditions.  
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.  
Additional Cin = 1 µF. See Operating Information section for selection of capacitor types.  
Characteristics  
Conditions  
min  
36  
typ  
max  
75  
Unit  
V
VI  
Input voltage range  
Decreasing input voltage  
See Note 1  
VIoff  
Turn-off input voltage  
Turn-on input voltage  
27  
32  
28  
29  
V
V
Increasing input voltage  
See Note 1  
VIon  
33  
33.5  
CI  
Internal input capacitance  
Output power  
0.5  
µF  
PO  
0
49.5  
9.5  
W
50% of max IO  
89.5  
88.7  
89.9  
88.8  
6.3  
max IO  
η
Efficiency  
%
50% of max IO, VI = 48 V  
max IO, VI = 48 V  
max IO  
Pd  
Pli  
PRC  
fs  
Power Dissipation  
Input idling power  
Input standby power  
Switching frequency  
W
W
IO = 0 A, VI = 53 V  
VI = 53 V (turned off with RC)  
0-100 % of max IO  
1.8  
0.14  
320  
W
290  
350  
kHz  
Output voltage initial setting and  
accuracy  
VOi  
TP1 = +25°C, VI = 53 V, IO = 3.3 A  
14.70  
15.00  
15.30  
V
Output adjust range  
Output voltage tolerance band  
Idling voltage  
See operating information  
0-100% of max IO  
IO = 0 A  
12.00  
14.55  
14.55  
16.50  
15.45  
15.45  
130  
V
V
VO  
V
Line regulation  
max IO  
60  
12  
mV  
mV  
Load regulation  
VI = 53 V, 0-100% of max IO  
50  
Load transient  
voltage deviation  
VI = 53 V, Load step 25-75-25% of  
max IO, di/dt = 1 A/µs  
See note 3  
Vtr  
ttr  
±400  
30  
±800  
60  
mV  
µs  
Load transient recovery time  
Ramp-up time  
tr  
3
8
6
9
ms  
(from 10−90% of VOi)  
0-100% of max IO  
Start-up time  
(from VI connection to 90% of VOi)  
ts  
tf  
12  
16  
ms  
max IO  
0.2  
0.4  
0.003  
10  
0.8  
ms  
s
VI shut-down fall time  
(from VI off to 10% of VO)  
IO = 0.33 A  
max IO  
0.0025  
0.0035  
RC start-up time  
ms  
tRC  
max IO  
0.25  
ms  
RC shut-down fall time  
(from RC off to 10% of VO)  
I
O = 0.33 A  
0.0012  
s
IO  
Output current  
0
3.3  
5
A
A
Ilim  
Isc  
Current limit threshold  
Short circuit current  
Output ripple & noise  
TP1 < max TP1  
3.6  
4.3  
3.0  
65  
TP1 = 25ºC, see Note 2  
See ripple & noise section, VOi  
A
VOac  
130  
mVp-p  
T
P1 = +25°C, VI = 53 V, 0-100% of  
OVP  
Over voltage protection  
19  
V
max IO  
Note 1: See Operation information section Turn-off Input Voltage.  
Note 2: RMS current in hiccup mode, Vo lower than aprox 0.5V.  
Note 3: Measured with 100 µF tantalum (ESR aprox 80 mΩ) on the output.  
E
34  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
15 V, 3.3 A / 50 W  
PKU 4515 PI  
Efficiency  
Power Dissipation  
[%]  
95  
[W]  
10  
8
6
4
2
0
90  
85  
80  
75  
70  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
0
1
2
3
0
1
2
3
[A]  
[A]  
Dissipated power vs. load current and input voltage at  
TP1 = +25°C  
Efficiency vs. load current and input voltage at TP1 = +25°C  
Output Characteristics  
Current Limit Characteristics  
[V]  
[V]  
15 . 3 0  
20.00  
15 . 2 0  
15 . 10  
15 . 0 0  
14 . 9 0  
14 . 8 0  
14 . 7 0  
15 . 0 0  
10 . 0 0  
5.00  
0.00  
36 V  
48 V  
53 V  
75 V  
36 V  
48 V  
53 V  
75 V  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
[A]  
0
1
2
3
[A]  
Output voltage vs. load current at TP1 = +25°C  
Output voltage vs. load current at IO > max IO , TP1 = +25°C  
E
35  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
15 V, 3.3 A / 50 W  
PKU 4515 PI  
Start-up  
Shut-down  
Start-up enabled by connecting VI at:  
P1 = +25°C, VI = 53 V,  
IO = 3.3 A resistive load.  
Top trace: output voltage (5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (5 ms/div.).  
Shut-down enabled by disconnecting VI at:  
P1 = +25°C, VI = 53 V,  
IO = 3.3 A resistive load.  
Top trace: output voltage (5 V/div.).  
Bottom trace: input voltage (50 V/div.).  
Time scale: (0.2 ms/div.).  
T
T
Output Ripple & Noise  
Output Load Transient Response  
Output voltage ripple at:  
TP1 = +25°C, VI = 53 V,  
IO = 3.3 A resistive load.  
Trace: output voltage (50 mV/div.).  
Time scale: (2 µs/div.).  
Output voltage response to load current step- Top trace: output voltage (1 V/div.).  
change (0.82 – 2.47 – 0.82 A) at:  
TP1 =+25°C, VI = 53 V.  
Bottom trace: load current (1 A/div.).  
Time scale: (0.1 ms/div.).  
Output Voltage Adjust (see operating information)  
Passive adjust  
Active adjust  
The resistor value for an adjusted output voltage is calculated by  
using the following equations:  
The output voltage may be adjusted using a voltage applied to the  
Vadj pin. This voltage is calculated by using the following equation:  
Output Voltage Adjust Upwards, Increase:  
⎛
Vdesired − 15.0 ⎞  
⎟ V  
Vadj = ⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 5.11×15.0  
(
100 + ∆%  
)
511  
⎞
15.0  
⎝
⎠
⎜
⎜
⎟
Radj =  
−
−10.22 kΩ  
⎟
⎠
1.225 × ∆%  
∆%  
⎝
Example: Upwards => 15.60 V  
Example: Increase 4% =>Vout = 15.60 V  
⎛
15.6 − 15.0 ⎞  
⎜1.225 + 2.45 ×  
⎟ V = 1.323 V  
⎜
⎟
⎛ 5.11× 15.0  
(
100 + 4  
)
511  
4
⎞
⎟
15.0  
⎝
⎠
⎜
⎜
−
− 10.22⎟ kΩ = 1489 kΩ  
1.225 × 4  
⎝
⎠
Example: Downwards => 14.70 V  
Output Voltage Adjust Downwards, Decrease:  
⎛
14.7 − 15.0 ⎞  
⎟ V = 1.176 V  
⎜1.225 + 2.45 ×  
⎜
⎟
⎛ 511⎞  
15.0  
⎝
⎠
Radj = ⎜  
⎟ − 10.22 kΩ  
⎜
⎟
∆%  
⎝
⎠
Example: Decrease 2% =>Vout = 14.70 V  
⎛ 511⎞  
⎜
⎜
⎟ − 10.22 kΩ = 245 kΩ  
⎟
2
⎝
⎠
E
36  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Typical Characteristics  
15 V, 3.3 A / 50 W  
PKU 4515 PI  
Output Current Derating – Open frame  
[A]  
4
3
2
1
0
3.0 m/s  
2.0 m/s  
1.5 m/s  
1.0 m/s  
Nat. Conv.  
0
20  
40  
60  
80  
100 [°C]  
Available load current vs. ambient air temperature and airflow at  
VI = 53 V. See Thermal Consideration section.  
E
37  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
EMC Specification  
Conducted EMI measured according to EN55022, CISPR 22  
and FCC part 15J (see test set-up). See Design Note 009 for  
further information. The fundamental switching frequency is  
320 kHz for PKU 4511 PI @ VI = 53 V, max IO.  
Conducted EMI Input terminal value (typ)  
Test set-up  
Layout recommendations  
The radiated EMI performance of the Product will depend on  
the PCB layout and ground layer design. It is also important to  
consider the stand-off of the product. If a ground layer is used,  
it should be connected to the output of the product and the  
equipment ground or chassis.  
EMI without filter  
External filter (class B)  
Required external input filter in order to meet class B in  
EN 55022, CISPR 22 and FCC part 15J.  
A ground layer will increase the stray capacitance in the PCB  
and improve the high frequency EMC performance.  
Output ripple and noise  
Filter components:  
C1, 2, 6 = 1 µF/100 V  
Ceramic  
Output ripple and noise measured according to figure below.  
See Design Note 022 for detailed information.  
C3  
L1  
L2  
C3, 4 = 2.2 nF/1500 V  
Ceramic  
C1  
C2  
C6  
DC/DC  
C5 = 100 µF/100 V  
Electrolytic  
C5  
Load  
C4  
Output ripple and noise test setup  
EMI with filter  
E
38  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
products are designed for stable operation without external  
capacitors connected to the input or output. The performance  
in some applications can be enhanced by addition of external  
capacitance as described under External Decoupling  
Capacitors.  
Operating information  
Input Voltage  
The input voltage range 36 to 75Vdc meets the requirements  
of the European Telecom Standard ETS 300 132-2 for normal  
input voltage range in –48 and –60 Vdc systems, -40.5 to -  
57.0 V and –50.0 to -72 V respectively.  
At input voltages exceeding 75 V, the power loss will be higher  
than at normal input voltage and TP1 must be limited to  
absolute max +120°C. The absolute maximum continuous  
input voltage is 80 Vdc.  
If the input voltage source contains significant inductance, the  
addition of a 22 - 100 µF capacitor across the input of the  
product will ensure stable operation. The capacitor is not  
required when powering the product from an input source with  
an inductance below 10 µH. The minimum required  
capacitance value depends on the output power and the input  
voltage. The higher output power the higher input capacitance  
is needed. Approximately doubled capacitance value is  
required for a 24 V input voltage source compared to a 48V  
input voltage source.  
Turn-off Input Voltage  
The products monitor the input voltage and will turn on and  
turn off at predetermined levels.  
The minimum hysteresis between turn on and turn off input  
voltage is 1V. On the 15V version, the mimimum hysteresis  
between turn on and turn off input voltage is 3V.  
External Decoupling Capacitors  
When powering loads with significant dynamic current  
requirements, the voltage regulation at the point of load can  
be improved by addition of decoupling capacitors at the load.  
The most effective technique is to locate low ESR ceramic and  
electrolytic capacitors as close to the load as possible, using  
several parallel capacitors to lower the effective ESR. The  
ceramic capacitors will handle high-frequency dynamic load  
changes while the electrolytic capacitors are used to handle  
low frequency dynamic load changes. It is equally important to  
use low resistance and low inductance PCB layouts and  
cabling.  
Remote Control (RC)  
The products are fitted with a  
remote control function referenced  
to the primary negative input  
connection (-In), with negative and  
positive logic options available.The  
RC function allows the product to  
be turned on/off by an external  
device like a semiconductor or  
mechanical switch. The RC pin has  
an internal pull up resistor to +In.  
External decoupling capacitors will become part of the  
product’s control loop. The control loop is optimized for a wide  
range of external capacitance and the maximum  
recommended value that could be used without any additional  
analysis is found in the Electrical specification.  
The ESR of the capacitors is a very important parameter.  
Stable operation is guaranteed with a verified ESR value of  
>10 mΩ across the output connections.  
The maximum required sink current is 0.6 mA. When the RC  
pin is left open, the voltage generated on the RC pin is  
10 – 22 V. The standard product is provided with “negative  
logic” remote control and will be off until the RC pin is  
connected to the -In. To turn on the product the voltage  
between RC pin and -In should be less than 1V. To turn off the  
converter the RC pin should be left open, or connected to a  
voltage higher than 8 V referenced to -In. In situations where it  
is desired to have the product to power up automatically  
without the need for control signals or a switch, the RC pin can  
be wired directly to -In.  
For further information please contact your local Ericsson  
Power Modules representative.  
Output Voltage Adjust (Vadj  
)
The products have an Output Voltage Adjust pin (Vadj). This  
pin can be used to adjust the output voltage above or below  
Output voltage initial setting.  
When increasing the output voltage, the voltage at the output  
pins (including any remote sense compensation ) must be  
kept below the threshold of the over voltage protection, (OVP)  
to prevent the product from shutting down. At increased output  
voltages the maximum power rating of the product remains the  
same, and the max output current must be decreased  
correspondingly.  
The second option is “positive logic” remote control, which can  
be ordered by adding the suffix “P” to the end of the part  
number. When the RC pin is left open, the product starts up  
automatically when the input voltage is applied. Turn off is  
achieved by connecting the RC pin to the -In. To ensure safe  
turn off the voltage difference between RC pin and the -In pin  
shall be less than 1V. The product will restart automatically  
when this connection is opened.  
To increase the voltage the resistor should be connected  
between the Vadj pin and +Sense pin. The resistor value of the  
Output voltage adjust function is according to information  
given under the Output section for the respective product.  
To decrease the output voltage, the resistor should be  
connected between the Vadj pin and –Sense pin.  
See Design Note 021 for detailed information.  
Input and Output Impedance  
The impedance of both the input source and the load will  
interact with the impedance of the product. It is important that  
the input source has low characteristic impedance. The  
E
39  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
and will make continuous attempts to start up (non-latching  
mode, hiccup). The converter will resume normal operation  
after removal of the overload. The load distribution should be  
designed for the maximum output short circuit current  
specified.  
Pre-bias Start-up  
The product has a Pre-bias start up functionality and will not  
sink current during start up if a pre-bias source is present at  
the output terminals.  
Typical Pre-bias source levels for no negative current:  
Up to 0.5 V for PKU 4318L (1.2 V)  
Up to 0.7 V for PKU 4318H (1.5 V)  
Up to 1.0 V for PKU 4418G (1.8 V)  
Up to 1.5 V for PKU 4319 (2.5 V)  
Up to 2.0 V for PKU 4510 (3.3 V)  
Up to 3.0 V for PKU 4511 (5 V)  
Up to 6.0 V for PKU 4513 (12 V)  
Up to 9.0 V for PKU 4515 (15 V)  
Parallel Operation  
Two products may be paralleled for redundancy if the total  
power is equal or less than PO max. It is not recommended to  
parallel the products without using external current sharing  
circuits.  
See Design Note 006 for detailed information.  
Remote Sense  
The products have remote sense that can be used to  
compensate for voltage drops between the output and the  
point of load. The sense traces should be located close to the  
PCB ground layer to reduce noise susceptibility. The remote  
sense circuitry will compensate for up to 10% voltage drop  
between output pins and the point of load.  
If the remote sense is not needed +Sense should be  
connected to +Out and -Sense should be connected to -Out.  
Over Temperature Protection (OTP)  
The products are protected from thermal overload by an  
internal over temperature shutdown circuit.  
When TP1 as defined in thermal consideration section exceeds  
135°C the product will shut down. The product will make  
continuous attempts to start up (non-latching mode) and  
resume normal operation automatically when the temperature  
has dropped >5°C below the temperature threshold.  
Over Voltage Protection (OVP)  
{The products have output over voltage protection that will  
shut down the product in over voltage conditions. The product  
will make continuous attempts to start up (non-latching mode)  
and resume normal operation automatically after removal of  
the over voltage condition.  
Over Current Protection (OCP)  
The converters include current limiting circuitry for protection  
at continuous overload.  
The output voltage will decrease towards zero for output  
currents in excess of max output current (max IO). If the output  
voltage decreases down to 0.5-0.6 V the converter shuts down  
E
40  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Thermal Consideration  
General  
The converters are designed to operate in different thermal  
environments and sufficient cooling must be provided to  
ensure reliable operation.  
Cooling is achieved mainly by conduction, from the pins to the  
host board, and convection, which is dependent on the airflow  
across the converter. Increased airflow enhances the cooling  
of the converter.  
P1  
The Output Current Derating graph found in the Output section  
for each model provides the available output current vs.  
ambient air temperature and air velocity at Vin = 53 V.  
Open frame  
The DC/DC converter is tested on a 254 x 254 mm,  
35 µm (1 oz), 8-layer test board mounted vertically in a wind  
tunnel with a cross-section of 305 x 305 mm.  
Proper cooling of the DC/DC converter can be verified by  
measuring the temperature at positions P1. The temperature at  
these positions should not exceed the max values provided in  
the table below.  
See Design Note 019 for further information.  
Definition of product operating temperature  
The product operating temperatures is used to monitor the  
temperature of the product, and proper thermal conditions can  
be verified by measuring the temperature at positions P1. The  
temperature at these positions Tref should not exceed the  
maximum temperatures in the table below. The number of  
measurement points may vary with different thermal design  
and topology. Temperatures above maximum TP1, measured  
at the reference point P1 are not allowed and may cause  
permanent damage.  
Position  
Description  
Max Temp.  
P1  
Mosfet  
Tref  
E
41  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Ambient Temperature Calculation  
Connections  
By using the thermal resistance the maximum allowed ambient  
temperature can be calculated.  
1. The power loss is calculated by using the formula  
((1/η) - 1) × output power = power losses (Pd).  
η = efficiency of converter. For example 89.2 % = 0.892  
2. Find the thermal resistance (Rth) in the Thermal Resistance  
graph found in the Output section for each model.  
Calculate the temperature increase (∆T).  
∆T = Rth x Pd  
3. Max allowed ambient temperature is:  
Max Tref - ∆T.  
Pin  
1
Designation  
Function  
Example PKU 4510 (@ VI 53 V &15 A) at 1 m/s:  
1. (1/0.892 - 1) × 49.5 W = 5.99 W  
+In  
Positive Input  
2
3
4
5
6
7
8
RC  
Remote Control  
Negative Input  
Negative Output  
Negative Sense  
-In  
2. 5.99 W × 9.2°C/W = 55.1°C  
-Out  
-Sen  
Vadj  
3. 120 °C – 55.1°C = max ambient temperature is 64.9°C  
Output Voltage Adjust  
Positive Sense  
The actual temperature will be dependent on several factors  
such as the PCB size, number of layers and direction of  
airflow.  
+Sen  
+Out  
Positive Output  
E
42  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308R4CAug2011
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Mechanical Information - Hole Mount Version  
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,  
unless explicitly described and dimensioned in this drawing.  
E
43  
Technical Specification  
PKU 4000 series Direct Converters
EN/LZT 146 308R4CAug2011
© Ericsson AB  
Input 36-75 V, Output up to 25 A / 50 W  
Mechanical Information - Surface Mount Version  
All component placements – whether shown as physical components or symbolical outline – are for reference only and are subject to change throughout the product’s life cycle,  
unless explicitly described and dimensioned in this drawing.  
E
44  
Technical Specification  
PKU 4000 series Direct Converters
Input 36-75 V, Output up to 25 A / 50 W  
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Soldering Information - Surface Mounting  
Lead-free (Pb-free) solder processes  
The surface mount product is intended for forced convection or For Pb-free solder processes, a pin temperature (TPIN) in  
vapor phase reflow soldering in SnPb or Pb-free processes.  
excess of the solder melting temperature (TL, 217 to 221°C for  
SnAgCu solder alloys) for more than 30 seconds and a peak  
temperature of 235°C on all solder joints is recommended to  
The reflow profile should be optimised to avoid excessive  
heating of the product. It is recommended to have a sufficiently ensure a reliable solder joint.  
extended preheat time to ensure an even temperature across  
the host PCB and it is also recommended to minimize the time  
in reflow.  
Maximum Product Temperature Requirements  
Top of the product PCB near pin 2 is chosen as reference  
location for the maximum (peak) allowed product temperature  
(TPRODUCT) since this will likely be the warmest part of the  
product during the reflow process.  
A no-clean flux is recommended to avoid entrapment of  
cleaning fluids in cavities inside the product or between the  
product and the host board, since cleaning residues may affect  
long time reliability and isolation voltage.  
SnPb solder processes  
For SnPb solder processes, the product is qualified for MSL 1  
according to IPC/JEDEC standard J-STD-020C.  
General reflow process specifications  
Average ramp-up (TPRODUCT  
SnPb eutectic  
3°C/s max  
Pb-free  
)
3°C/s max  
Typical solder melting (liquidus)  
temperature  
TL  
183°C  
221°C  
During reflow TPRODUCT must not exceed 225 °C at any time.  
Minimum reflow time above TL  
Minimum pin temperature  
Peak product temperature  
30 s  
30 s  
Pb-free solder processes  
TPIN  
210°C  
235°C  
For Pb-free solder processes, the product is qualified for MSL 3  
according to IPC/JEDEC standard J-STD-020C.  
TPRODUCT 225°C  
6°C/s max  
260°C  
Average ramp-down (TPRODUCT  
)
6°C/s max  
8 minutes  
Maximum time 25°C to peak  
6 minutes  
During reflow TPRODUCT must not exceed 260 °C at any time.  
Dry Pack Information  
Temperature  
TPRODUCT maximum  
TPIN minimum  
Products intended for Pb-free reflow soldering processes are  
delivered in standard moisture barrier bags according to  
IPC/JEDEC standard J-STD-033 (Handling, packing, shipping  
and use of moisture/reflow sensitivity surface mount devices).  
Pin  
profile  
TL  
Product  
profile  
Using products in high temperature Pb-free soldering  
processes requires dry pack storage and handling. In case the  
products have been stored in an uncontrolled environment and  
no longer can be considered dry, the modules must be baked  
according to J-STD-033.  
Time in  
reflow  
Time in preheat  
/ soak zone  
Time 25°C to peak  
Time  
Thermocoupler Attachment  
Pin 8 for measurement of minimum  
solder joint temperature, TPIN  
Minimum Pin Temperature Recommendations  
Pin number 8 is chosen as reference location for the minimum  
pin temperature recommendation since this will likely be the  
coolest solder joint during the reflow process.  
SnPb solder processes  
For SnPb solder processes, a pin temperature (TPIN) in excess  
of the solder melting temperature, (TL, 183°C for Sn63Pb37) for  
more than 30 seconds and a peak temperature of 210°C is  
recommended to ensure a reliable solder joint.  
Pin 2 for measurement of maximum peak product  
reflow temperature, TP  
For dry packed products only: depending on the type of solder  
paste and flux system used on the host board, up to a  
recommended maximum temperature of 245°C could be used,  
if the products are kept in a controlled environment (dry pack  
handling and storage) prior to assembly.  
E
45  
Technical Specification  
PKU 4000 series Direct Converters
Input 36-75 V, Output up to 25 A / 50 W  
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Soldering Information - Hole Mounting  
Tray Specifications  
The hole mounted product is intended for plated through hole  
mounting by wave or manual soldering. The pin temperature is  
specified to maximum to 270°C for maximum 10 seconds.  
Material  
Antistatic PPE  
105 < Ohm/square < 1012  
Surface resistance  
The trays can be baked at maximum  
125°C for 48 hours  
Bakeability  
A maximum preheat rate of 4°C/s and maximum preheat  
temperature of 150°C is suggested. When soldering by hand,  
care should be taken to avoid direct contact between the hot  
soldering iron tip and the pins for more than a few seconds in  
order to prevent overheating.  
Tray thickness  
Box capacity  
Tray weight  
20 mm [0.787 inch]  
150 products (5 full trays/box)  
520 g empty, 130 g full tray  
A no-clean flux is recommended to avoid entrapment of  
cleaning fluids in cavities inside the product or between the  
product and the host board. The cleaning residues may affect  
long time reliability and isolation voltage.  
Delivery Package Information  
The hole mount products are delivered in antistatic injection  
molded trays (Jedec design guide 4.10D standard).  
The surface mount products are delivered in antistatic  
injection molded trays (Jedec design guide 4.10D standard)  
and in antistatic carrier tape (EIA 481 standard).  
Carrier Tape Specifications  
Material  
Antistatic PS  
Surface resistance  
Bakeability  
< 107 Ohm/square  
The tape is not bakeable  
56 mm [2.2 inch]  
36 mm [1.42 inch]  
11.4 mm [0.449 inch]  
380 mm [15 inch]  
200 products /reel  
3 kg/full reel  
Tape width, W  
Pocket pitch, P1  
Pocket depth, K0  
Reel diameter  
Reel capacity  
Reel weight  
EIA standard carrier tape  
Side view  
Pocket depth, K0  
Round holes  
User tape feed direction  
Top view  
Pin 1  
Elongated holes  
Pocket pitch, P1  
E
46  
Technical Specification  
PKU 4000 series Direct Converters
Input 36-75 V, Output up to 25 A / 50 W  
EN/LZT 146 308 R4C Aug 2011  
© Ericsson AB  
Product Qualification Specification  
Characteristics  
External visual inspection  
IPC-A-610  
Temperature range  
Number of cycles  
Dwell/transfer time  
-40 to 100°C  
1000  
15 min/0-1 min  
Change of temperature  
(Temperature cycling)  
IEC 60068-2-14 Na  
Temperature TA  
Duration  
-45°C  
72 h  
Cold (in operation)  
Damp heat  
IEC 60068-2-1 Ad  
IEC 60068-2-67 Cy  
IEC 60068-2-2 Bd  
Temperature  
Humidity  
Duration  
85°C  
85 % RH  
1000 hours  
Temperature  
Duration  
125°C  
1000 h  
Dry heat  
Electrostatic discharge  
susceptibility  
IEC 61340-3-1, JESD 22-A114  
IEC 61340-3-2, JESD 22-A115  
Human body model (HBM)  
Machine Model (MM)  
Class 2, 2000 V  
Class 3, 200 V  
Water  
Glycol ether  
Isopropyl alcohol  
55°C  
35°C  
35°C  
Immersion in cleaning solvents  
Mechanical shock  
IEC 60068-2-45 XA, method 2  
IEC 60068-2-27 Ea  
Peak acceleration  
Duration  
100 g  
6 ms  
Level 1 (SnPb-eutectic)  
Level 3 (Pb Free)  
225°C  
260°C  
Moisture reflow sensitivity 1  
Operational life test  
J-STD-020C  
MIL-STD-202G, method 108A  
IEC 60068-2-20 Tb, method 1A  
Duration  
1000 h  
Solder temperature  
Duration  
270°C  
10-13 s  
Resistance to soldering heat 2  
IEC 60068-2-21 Test Ua1  
IEC 60068-2-21 Test Ue1  
Through hole mount products  
Surface mount products  
All leads  
All leads  
Robustness of terminations  
Solderability  
Preconditioning  
Temperature, SnPb Eutectic  
Temperature, Pb-free  
150°C dry bake 16 h  
215°C  
235°C  
IEC 60068-2-58 test Td 1  
IEC 60068-2-20 test Ta 2  
Preconditioning  
Temperature, SnPb Eutectic  
Temperature, Pb-free  
Steam ageing  
235°C  
245°C  
Frequency  
Spectral density  
Duration  
10 to 500 Hz  
Vibration, broad band random  
Notes  
IEC 60068-2-64 Fh, method 1  
0.07 g2/Hz  
10 min in each direction  
1 Only for products intended for reflow soldering (surface mount products)  
2 Only for products intended for wave soldering (plated through hole products)  

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