Lambda Vega 450 - Current Sharing System Configurations

Vega Customer Applications Manual Section 3 - Analogue Secondary options
Rev. A3: October 2003 Page 16 of 48
+S
+V
-S
-V
+S
+V
-S
-V
Pin 8/9 Pin 8/9
MODULE 1
MODULE 2
+S
+V
-S
-V
+S
+V
-S
-V
Pin 8/9 Pin 8/9
MODULE 1
MODULE 2
1+1 Current sharing system Locally Sensed
Locally sensed is TRUE redundant function. Shuttle 1
or 2 failing cannot influence the other shuttle. The
system will always remain functional.
Not shown are the L, N and Earth connections. It is
important when designing with connectors for hot swap
applications that that EARTH is made first and broken
last (ie use an extended earth pin).
Remember a lot of heat may be dissipated by the
blocking diodes. Be sure to rate them correctly.
Parallel for increased current : Not redundant.
In the absence of blocking diodes, there is no
redundancy. A short circuit in shuttle 1 will pull shuttle
2 down. This is normally used just to increase the
available output current.