VICOR VI Chip High-Voltage BCM User Manual
USER GUIDE | UG:010
VI Chip® High-Voltage BCM® Customer Evaluation Board
Contents Page
Introduction 1
Features 2
Using the High-Voltage
BCM Evaluation Board 2
Set Up 3
Efficiency Measurement 4
Recommended Hardware 4
Thermal Considerations 4
Figure 1
BCM customer evaluation
board layout and dimensional
drawing, component side
WARNING:
The high-voltage BCM® customer evaluation board contains exposed metal carrying lethal
voltages when under power. Care should be taken to protect the user from accidental contact
when under power.
Introduction
The BCM evaluation board offers a convenient means to evaluate the performance of the Vicor BCM
bus converter and has been optimized for user convenience. Refer to the appropriate data sheet for
performance and operating limits. Data sheets are available at:
http://www.vicorpower.com/dc-dc/isolated-fixed-ratio/hv-bus-converter-module
It is important to remember the fast response of most BCM modules can readily show the limitations of
the source, load and associated wiring connected to the evaluation board. Care should be exercised to
minimize stray source and load impedances in order to fully exercise the module.
Please refer to Figure 1 for locations of the input and output connections as viewed from the
component side. Wires may be soldered directly to the pads instead of ring lugs if desired to minimize
circuit impedances.
Ø 0.20Typ
5.08
C
L
1.65
41.9
TP5
+IN
TP7
TM
TP2
RSV
C1
TP1
PC
®
BCM
Bus Converter
+OUT
J1
–OUT
TP6
–IN
TP4
2.52
64,0
UG:010 Page 1
Figure 2
BCM customer evaluation
board schematic
+IN
–IN
TM
RSV
PC
C1
2.2µF
450V
TP5
TP2
TP1
TP4
TM
RSV
PC
+IN
BCM
Module
–IN
+OUT
–OUT
®
+OUT
–OUT
Features
Oscilloscope probe jack for output voltage and ripple measurements
Simple to use
Ring lug or solder connections
Using the High-Voltage BCM Evaluation Board
+OUT
TP7
TP6
J1
–OUT
WARNING:
Hazardous voltages are present on the high-voltage BCM® evaluation board under power. PERSONAL
CONTACT WITH LINE VOLTAGE MAY RESULT IN SEVERE INJURY, DISABILITY, OR DEATH. IMPROPER OR
UNSAFE HANDLING OF THIS BOARD MAY RESULT IN SERIOUS INJURY OR DEATH.
Read the precautions below entirely BEFORE using the high-voltage BCM evaluation board. Do not
operate the evaluation board unless you have the appropriate safety precautions in place on your bench
to guarantee safety. The list below is not comprehensive and is not a substitute for common
sense and good practice.
1. The high-voltage BCM evaluation board does not contain a fuse. ALWAYS use a fuse upstream of
the evaluation board when operating under power.
2. ALWAYS remove power before touching, servicing or attaching probes to the high-voltage BCM
evaluation board. Verify that the power is removed before touching. Physically disconnect input
power or use a lockout / tagout (LOTO) system to prevent the accidental application of power while
servicing the evaluation board.
3. While the high-voltage BCM evaluation board is designed to demonstrate the use of BCM bus
converters in offline systems, for general laboratory evaluation, it is highly recommended for safety
purposes to use an isolated high voltage source for the evaluation board. This source can be a
bench-top regulated high-voltage DC source, or an offline PFC front end powered through an
ISO-VAC or line-isolation transformer.
4. NEVER leave the high-voltage BCM evaluation board unattended when under power.
5. Provide strain relief for wires and place the high-voltage BCM evaluation board on the bench
in such a way as to prevent accidental dislodgement from the bench top. Connecting wires or
attached probes should not hang off the bench.
6. Use appropriate shielding of exposed high-voltage areas of the high-voltage BCM evaluation board
to prevent accidental casual contact.
7. The high-voltage BCM evaluation board is designed for use in a laboratory environment. Use of the
evaluation board in other environments is not recommended.
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