User’s Manual
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APPENDIX D. POWER SUPPLY
Appendix D provides information for PowerCore power supplies
and battery backup. Information on the reset generator used in
power management is also included.
D.1 Power Supplies
The PowerCore has an optional 6-pin locking connector on the top side at J3 designed to
accept a wire harness that brings in power. The same power connections and some addi-
tional connections are available on the 50-pin motherboard connector J4.
The PowerCore receives power in the form of unregulated AC, DC, or regulated +5 V DC.
When an unregulated power supply is used, the PowerCore has an onboard +5 V DC
switching regulator that is available in 1 A and 2 A versions. The +5 V DC is regulated
down to 3.45 V by a linear regulator on the PowerCore board.
Figure D-1. PowerCore Module Power Supplies
LINEAR POWER
REGULATOR
J3
10 F
SPX1117R
U15
+V
3
1
2
4
6
1000 F
330 F
+5 V
L1
C34
330 H
D4
SWITCHING POWER REGULATOR
1 A and 2 A options
U11
LM2592HV
or LM2575
POWER
IN
POWER
IN
J4
2
4
5, 48
DC+
AC1_DCIN
AC_CT
AC2
R57, R58
0 W
R59, R60
0 W
SG1
SG2
SG3
TVS1
TVS2
D5
D6
D7
D8
10 F
348
W
100 nF
348
W
200
W
200
W
6
+5 V
+V
+5 V
1
AC1_DCIN
AC2
3,5
D7, D8, R59, R60 are not installed
on PowerCore 3800 and 3810 modules.
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