XPWR104HR 6
RTD Embedded Technologies, Inc
Chapter 1
I
NTRODUCTION
This user’s manual describes the operation of the XPWR104HR power supply unit for
automotive and industrial applications.
Features
Some of the key features of the XPWR104HR include:
•
Wide input voltage range 8-32V DC (36V maximum)
•
75W output power guaranteed with adequate cooling, 92% 5V efficiency
•
Remote ON/OFF operation
•
Power output options include: XPWR104HR
+5V, -5V, +12V, -12V
•
Two status LED's
•
Fully PC/104 compliant
•
Operating temperature -40 to +85 C
•
No electrolytic capacitors to increase the operating altitude
The following paragraphs briefly describe the major features of the XPWR104HR. A
more detailed discussion is included in Chapter 3 (Hardware description). The board
installation is described in Chapter 2 (Board Installation).
Power supply units
The XPWR104HR power supply unit offers a complete reliable power subsystem
for your sophisticated computer and peripherals. To improve reliability in noisy
environments, the XPWR104HR is designed using protection devices against over
voltages, noise spikes and reverse input voltage. The output current of the +5V
converter is limited to 15A. This enables reliable system operation in distributed
industrial installations.
The main +5V computer power supply is designed using a high efficiency, dual
phase switching regulator module providing high output current (15A) with a high
efficiency (92% maximum) under all conditions. The secondary peripheral power
supplies are designed using +12V (boost) and -12V (Cuk) converters. Low
component count and extensive use of SMD technology ensures low weight and
reliable operation. This combination creates low input current ripple to minimize
stress on the unregulated input supply. The output creates a very low ripple
voltage signature.
The XPWR104HR can be “switched off” from a remote source. If this switch (X1
jumper) is closed the power supply will become inactive while still powered.
