Vicor VI Chip BCM Customer Evaluation Board User Manual
Page 4
UG:001
vicorpower.com
Applications Engineering: 800 927.9474
Page 4
Input Current Measurement
A current probe can be passed around the +in lead connected to the BCM®. Input
capacitors on the Customer Evaluation Board are downstream of this
measurement point.
TM - Do not connect, for factory use only.
VC - Do not connect, for factory use only.
Primary Control (PC)
The PC can be used to disable the BCM, monitor status, or provide a primary referenced
bias supply.
a. Connecting PC to the –in will disable the BCM.
b. Connecting a DVM or oscilloscope between PC (positive) and –in (negative) will
indicate the status of the BCM. Please note that the BCM does not have active
current sinking capability.
c. Connecting a load between PC (positive) and –in (negative) will provide a primary
referenced bias supply.
Efficiency Measurement
As the BCM can deliver and consume large currents, the effect of the PCB must be
considered when making an efficiency measurement. Be certain to accurately measure
the voltage directly at the BCM using the appropriate pair of contact points located at
the corners of the BCM.
Figure 3.
BCM Customer Evaluation
Paralleling connections of two
BCM Customer Evaluation
Boards
+IN
-IN
+OUT
-OUT
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