Limited Internal
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Technical Specication
AApppprroovevedd CheCheckeckedd DatDatee RevRev RefRefeerreenncece
EN/LZT 146 308 R5A November 2017
PKU 4000 series DC/DC Converters
Kevin Zhou 20172017--1109--0122 JG
Flex
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
Safety Approvals Design for Environment
Remote control
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 ............................................................. 2
General Information ............................................................. 2
Safety Specification ............................................................. 3
Absolute Maximum Ratings ............................................................. 4
Product Program Ordering No.
1.2V, 25A / 30W PKU 4318L .......................................... 5
1.5V, 25A / 37.5W PKU 4318H ........................................... 9
1.8V, 25A / 45W PKU 4418G ........................................ 13
2.5V, 15A / 37.5W PKU 4319 ........................................... 17
3.3V, 15A / 50W PKU 4510 ........................................... 21
5.0V, 10A / 50W PKU 4511 ........................................... 25
12.0V, 4.2A / 50W PKU 4513 ........................................... 29
15.0V, 3.3A / 50W PKU 4515 ........................................... 33
EMC Specification ........................................................... 37
Operating Information ........................................................... 38
Thermal Consideration ........................................................... 40
Connections ........................................................... 41
Mechanical Information ........................................................... 43
Soldering Information ........................................................... 45
Delivery Information ........................................................... 45
Product Qualification Specification ........................................................... 46
PRODUCT SPECIFICATION 2 (4)
Prepared (also subject responsible if other) No.
Kevin Zhou 1/1301-BMR 602 Uen
2
Technical Specication
Approved Checked Date Rev Reference
EN/LZT 146 308 R5A November 2017
PKU 4000 series DC/DC Converters
Kevin Zhou 2017-09-22 J
Flex
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
Product program Output
requirements of the RoHS directive 2002/95/EC and have a
PKU 4318L 1.2 V, 25 A / 30 W
maximum concentration value of 0.1% by weight in
PKU 4318H 1.5 V, 25 A / 38 W
homogeneous materials for lead, mercury, hexavalent
PKU 4418G 1.8 V, 25 A / 45 W
chromium, PBB and PBDE and of 0.01% by weight in
PKU 4319 2.5 V, 15 A / 38 W
homogeneous materials for cadmium.
PKU 4510 3.3 V, 15 A / 50 W
PKU 4511 5.0 V, 10 A / 50 W
Exemptions in the RoHS directive utilized in Flex products
PKU 4513 12 V, 4.2 A / 50 W
include:
PKU 4515 15 V, 3.3 A / 50 W
- Lead in high melting temperature type solder (used to
solder the die in semiconductor packages)
Product number and Packaging
- Lead in glass of electronics components and in
PKU 4XXXX n1n2n3n4
electronic ceramic parts (e.g. fill material in chip
Options n n n n
1 2 3 4
resistors)
Mounting
- Lead as an alloying element in copper alloy containing
up to 4% lead by weight (used in connection pins
Remote Control logic
made of Brass)
Lead length
Delivery package information
Options Description
Quality Statement
The products are designed and manufactured in an
n PI Through hole
1
SI Surface mount industrial environment where quality systems and methods
like ISO 9000, 6 (sigma), and SPC are intensively in use
n Negative *
2 to boost the continuous improvements strategy. Infant
P Positive
mortality or early failures in the products are screened out
and they are subjected to an ATE-based final test.
n 5.30 mm *
3
Conservative design rules, design reviews and product
LA 3.69 mm
qualifications, plus the high competence of an engaged
LB 4.57 mm
work force, contribute to the high quality of our products.
n /B Tray
4
/C Tape and Reel (only for surface
Warranty
mount products)
Warranty period and conditions are defined in Flex 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).
Flex does not make any other warranties, expressed or
implied including any warranty of merchantability or fitness
General Information
for a particular purpose (including, but not limited to, use in
Reliability
life support applications, where malfunctions of product can
cause injury to a persons health or life).
The failure rate ( ) and mean time between failures
(MTBF= 1/ ) is calculated at max output power and an
Flex 2017
operating ambient temperature (T ) of +40C. Flex uses
A
The information and specifications in this technical
Telcordia SR-332 Issue 2 Method 1 to calculate the mean
specification is believed to be correct at the time of
steady-state failure rate and standard deviation ( ).
publication. However, no liability is accepted for
inaccuracies, printing errors or for any consequences
Telcordia SR-332 Issue 2 also provides techniques to
thereof. Flex reserves the right to change the
estimate the upper confidence levels of failure rates based
contents of this technical specification at any time without
on the mean and standard deviation.
prior notice.
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