Data Sheet
October 6, 2005
Document: DS06-005 ver. 0.4
PDF Name: JHW250S30R2_ds.pdf
JHW250S30R2 Power Modules; dc-dc Converter
36-75 Vdc Input; 30.2Vdc Output; 250W
Features
High efficiency – 92% at 30.2V full load
Industry standard pin-out
Improved Thermal Performance: Full
output power with case temperature (Tc) of 85°C
High power density: 91 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
RoHS Compliant
2:1 input voltage range
Constant switching frequency
Negative Remote On/Off logic
Output over current/voltage protection
Overtemperature protection
Output voltage adjustment
Applications
Distributed power architectures
Wireless Networks
RF Amplifier
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 (Pending)
Options
Positive Remote On/Off logic
Auto restart after fault shutdown
CE mark meets 73/23/EEC and 93/68/EEC
directives§ (JHW series only) (Pending)
Description
The JHW250-series dc-dc converters are a new generation of DC/DC power modules designed for
maximum efficiency and power density. The JHW series provide up to 250W 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 typically 92% at 30.2V with full load. The 5-sided encapsulated case
package allows for excellent thermal performance in strict thermal environment. Threaded or non-
threaded-through holes are provided to allow easy mounting to a cold wall or addition of a heatsink for
high-temperature applications. The JHW250 series power modules are isolated dc-dc converters that
operate over a wide input voltage range of 36 to 75 Vdc 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.
This product is intended for integration into end-user equipment. All the required procedures for CE marking of end-user equipment should be followed. (The CE mark is
†
‡
§
placed on selected products.)
** ISO is a registered trademark of the International Organization of Standards
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