Operator`s manual

Output/Customer Interface Connections
Figure 14. Output Connections for Single Output Cards
There are three types of output power terminals available in the Badger II. Outputs from Maxi converters
(single output cards) are terminated in two 10-32 stainless steel studs (see Fig. 14). The positive polarity of the
output is the right stud when viewed from the output end. Outputs from Mini converters (dual output cards)
terminate in a 7W2 connector (see Fig.15). Each power output is isolated, so outputs of positive or negative
polarity can be configured through proper selection of the output reference terminals. Outputs from three or
four Micro converters (quad output cards) terminate in a 16-pin Positronics connector (see Fig. 16).
In order to minimize parasitic cable inductance and reduce EMI, the output power cables should be routed in
close proximity to one another, and large current loops should be avoided. To avoid excessive voltage drop, do
not undersize power cables, especially for high current outputs. Excessive cable inductance, coupled with large
capacitive loading, can introduce instability in switching power supplies. This problem can be avoided with
proper system design. Consult Mission Power Solutions’ Engineering Department for assistance with applica-
tions that use long cable lengths and excessive load capacitance.
J3 & J4 (Dual) Pin Assignments
A1 +Output
A2 Output Return
1 N/C
2 N/C
3 +Sense
4 Trim
5 –Sense
Figure 15. Output Connections for
Dual Output Cards
J3 (Quad) Pin Assignments
1 +Out 1 9 +Out 1
2 –Out 1 10 –Out 1
3 +Out 2 11 +Out 2
4 –Out 2 12 –Out 2
5 +Out 3 13 +Out 3
6 –Out 3 14 –Out 3
7 +Out 4 15 +Out 4
8 –Out 4 16 –Out 4
J4
J3 Output 1
Output 2
Pin 1
J3
Pin 9
Output
Return Output
J3
J3 Pin Assignments
1 +Sense
2 Trim
3 –Sense
Badger II Power Supply Operator’s Manual
Rev. 05/11/2012 Mission Power Solutions [phone] [e-mail] Pg. 9
Sense Connections
The Badger II is shipped from the factory with Local Sense installed. If Remote Sense is desired, the Local
Sense jumpers can be removed for individual outputs. If the Local Sense jumpers are removed, the sense lines
must be connected at the load for Remote Sense. Leaving the sense lines open will prevent proper output
regulation and can result in damage to the unit.
When Local Sense is used, the power supply will regulate the output at the output terminals. The voltage ap-
pearing at the load may drop slightly due to voltage drop in the power cables. If it is necessary to compensate
for voltage drop along the output power cables, the output can be trimmed up or configured for Remote Sense.
Use stranded twisted pair 22-24 AWG wire for the Remote Sense lines. Remote Sense can compensate for a
voltage drop of up to 0.5 V, or 0.25 V on each leg.
Output Connections
Figure 16. Output Connections for Quad Output Cards