User`s manual

RabbitFLEX User’s Manual www.rabbit.com 133
APPENDIX B. POWER SUPPLY
This appendix provides information for the power supplies on the PowerCore modules used on the Rabbit-
FLEX BL300F board. Information on the reset generator used in power management is also included.
B.1 Power Supplies
The PowerCore module has a 6-pin locking connector on the top side at J3 designed to accept a wire har-
ness that brings in power. The J3 label on the PowerCore module is difficult to see, but luckily the 6-pin
locking connector is easy to find.
The PowerCore module receives power in the form of unregulated AC. There is an onboard +5 V DC
switching regulator that is available in 1 A (PowerCore 3810) and 2 A (PowerCore 3800). The +5 V DC is
regulated down to 3.45 V by a linear regulator on the PowerCore module.
Figure B.1 PowerCore Module Power Supplies
The PowerCore 3800 and the PowerCore 3810 are built for use with a full-wave rectifier and center-tapped
AC transformer.
LINEAR POWER
REGULATOR
J3
10 µF
SPX1117R
U15
+V
3
1
2
2
4
6
1000 µF
330 µF
+5 V
L1
C34
330 µH
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
SG1
SG2
SG3
TVS1
TVS2
D5
D6
10 µF
348 W
100 nF
348 W
6
+5 V
+V
+5 V
1
1
AC1_DCIN
AC2
3,5
21
200 W
200 W