Data Sheet
March 27, 2008
JBW050A Power Modules: dc-dc Converter;
36 to 75 Vdc Input, 5 Vdc Output; 50 W
Features
n Small size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
n High power density
n High efficiency: 84% typical
n Low output noise
n Constant frequency
n Industry-standard pinout
n Metal case
The JBW050A Power Module use advanced, surface-mount
technology and deliver high-quality, efficient, and compact
dc-dc conversion.
n 2:1 input voltage range
n Overtemperature protection
n Overcurrent and overvoltage protection
n Remote sense
Applications
n Remote on/off
n Distributed power architectures
n Workstations
n Adjustable output voltage: 60% to 110% of VO, nom
n Case ground pin
n Computer equipment
n Communications equipment
n ISO9001 Certified manufacturing facilities
n UL* 60950 Recognized, CSA† C22.2 No. 60950-
00 Certified, and EN 60950 (VDE0805):2001-12
Licensed
Options
n CE mark meets 73/23/EEC and 93/68/EEC
n Heat sinks available for extended operation
n Choice of remote on/off logic configuration
n Approved for basic insulation (-B suffix)
n Short Pins
directives‡
* UL is a registered trademark of Underwriters Laboratories, Inc.
†CSA is a registered trademark of Canadian Standards Assn.
‡This product is intended for integration into end-use equipment.
All the required procedures for CE marking of end-use equip-
ment should be followed. (The CE mark is placed on selected
products.)
Description
The JBW050A Power Module is a dc-dc converter that operates over an input voltage range of 36 Vdc to 75
Vdc and provides a precisely regulated 5 Vdc output. The output is fully isolated from the input, allowing a
versatile polarity configuration and grounding connections. The module has a maximum power rating of 50 W
at a typical full-load efficiency of 84%.
The modules are DC board-mountable and encapsulated in metal cases. Threaded-through holes are provided to
allow easy mounting or addition of a heat sink for high-temperature applications. The standard feature set
includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power applications.