PWRS-0026 User Manual
Page 10 of 19
IV. Power Supply Card
PS PCBA is responsible for converting AC input line to all required DC
voltages needed in a cPCI system. It uses an AC/DC of 130W for the first
phase and is designed for future upgrade to 180W with no additional PCB
modifications. Three DC/DC converters provide conversion of the 15V
(AC/DC output) to all required DC levels; one for 5V, one for 3.3V and one
for ±12V.
A. Power Supply Block Diagram
AC/DC
Input :
190-132/180-264V
Output :
15V
ACL
ACN
DC-DC
5V,75W
DC-DC
+-12V,25W
DC-DC
3V,30W
M-type
Conne
ctor
AC IN
connector
LED Indication
Transition
Connector
signals
including:
charger
status, NT
staus and
power failure
LED's
P/S board shown with Logic board
