Operator`s manual

Badger II Power Supply Operator’s Manual
Installing Remote Sense requires the Local Sense jumpers to be removed (see Figures 4 and 5, Pg 3). On single
output cards, the Local Sense jumpers are located behind the sense connector on JMP1 and JMP2. To remove the
jumpers, make certain the power to the supply is off, and pull them off connectors JMP1 and JMP2. On dual out-
put cards, the Local Sense jumpers are on either side of the card at JMP1and JMP2 for Output 1, and at JMP3
and JMP4 for Output 2.
The sense connector for a single output card is a 3-pin connector providing the +Sense connection on J3-1 and
the –Sense connection on J3-3. The sense connections for a dual output card are incorporated into the 7W2 D-
shell connector(s) that also provide the output and trim connection(s). +Sense is pin 3 of each connector,
and -Sense is pin 5 of each connector.
Figure 17. Remote Sense Connections
+Out
Load
+Sense
–Sense
–Out
Use 22-24 AWG
Twisted Pair
Wire
Rev. 05/11/2012 Mission Power Solutions [phone] [e-mail] Pg. 10
External Trim
The trim pin at J3-2 (single output) or J3-4, J4-4 (dual output) is referenced to the -Sense pin and can be used
for external control of the output voltage. A 10% increase to the trim pin voltage will result in a 10% increase
in output voltage. Reducing the trim pin voltage by 10% will result in a 10% decrease in output voltage.
Note: Converters are sometimes pre-trimmed at the factory if a nonstandard output voltage is requested. If a
non-standard voltage is requested, or when trimming below 5 V, consult Mission Power for assistance.
Figure 18. External Trim
–Sense
Trim
+Sense
–Out
Use 22-24 AWG Twisted Pair Wire for
Sense Connections
V
REF
REF
REF
10-300Ω
To Error
Amplifier
20-200Ω
R
TH
+
V
2
–
Load
+
V
1
–
R1
R2
R3
R5
R4
R8
R6
R7
+Out