Vicor Javelin III - Manual (Page 6)

Rev. 05/11/2012 Mission Power Solutions (760) 631-6846 [email protected] Pg. 6
Javelin III Power Supply Operator’s Manual
Power
Output
Line Filter Rectifier
Soft Start
Circuit
Boost Converter
Output
PFC Control
Customer
Interface
I/E Control
Fan
Housekeeping
Power
Input
Current
Sample
Waveform Sample
Inhibit/Enable Control
Inhibit/Enable
Figure 1. Javelin III Architecture
Interface Connections
Input Power Terminal (TB1)
Input AC (and DC) Power is applied to connector TB1 using a #8 ring lugs. See Table 1 (Pg. 2) for input con-
nector assembly instructions.
A fault-clearing device, such as a fuse or circuit breaker, with a maximum rating per Table 1 (Pg. 2) at the
power supply input is required for safety agency compliance.
Output Power Connections
The output power lugs available on the Javelin III are 1.5” x .25” with .516 holes accommodating up to ½”-13
bolts with flanged nuts. The positive polarity of the output is the lower right lug, and the return is on the upper
left when viewed from the output end. 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 load 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’ Engi-
neering Department for assistance with applications that use long cable lengths and excessive load capacitance.
Return Terminal
Positive Terminal
Figure 2. Output Connections for Javelin III