Data Sheet
March 26, 2008
JHC/JHW350 Series Power Modules; dc-dc Converter
18-36Vdc or 36-75Vdc Input; 28Vdc Output; 12.5A
Features
RoHS Compliant
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
High efficiency – 93.5% at 28V full load
Industry standard pin-out
Improved Thermal Performance: Full
output power with case temperature (Tc) of 85°C
High power density: 128 W/in3
Low output ripple and noise
Industry standard Half brick:
57.9 mm x 61.0 mm x 12.7 mm
(2.28 in x 2.4 in x 0.5 in)
Single tightly regulated output
Remote sense
Applications
Distributed power architectures
2:1 input voltage range
Wireless Networks
Constant switching frequency
Negative Remote On/Off logic
Output over current/voltage protection
Overtemperature protection
Output voltage adjustment
RF Amplifier
Options
Positive Remote On/Off logic
Wide operating temperature range (-40°C to 85°C)
ISO** 9001 certified manufacturing facilities
UL60950-1 Recognized, CSA† C22.2 No. 60950-1-
03 Certified, and EN 60950-1 (VDE‡ 0805): 2001-12
Licensed
Auto restart after fault shutdown
CE mark meets 73/23/EEC and 93/68/EEC
directives§ (JHW series only)
Description
The JHC/JHW-series dc-dc converters are a new generation of DC/DC power modules designed for maximum
efficiency and power density. The JHC/JHW series provide up to 350W output power in an industry standard Half-
brick, which makes it an ideal choice for high voltage and high power applications. The converter incorporates
synchronous rectification technology and innovative packaging techniques to achieve ultra high efficiency reaching
93.5% at 28V with full load. The 5-sided encapsulated case package allows for excellent thermal performance in
strict thermal environment. Threaded-through holes are provided to allow easy mounting or addition of a heatsink for
high-temperature applications. The JHC/JHW series power modules are isolated dc-dc converters that operate over
a wide input voltage range of 18 to 36 Vdc or 36 to 75 Vdc respectively and provide single precisely regulated
output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding
connections. Built-in filtering for both input and output minimizes the need for external filtering.
*
UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
†
‡
** ISO is a registered trademark of the International Organization of Standards
Document No: DS03-089 ver. 1.3
PDF name: jhc_jhw350_series.ds.pdf