Application
NOTES:
First Release: February 1, 2005
www.pwrx.com
BP7A – L-Series IPM Interface Circuit Reference Design
Description: The BP7A is a complete isolated interface circuit for six and seven pack low and medium power L-
Series IPMs. This circuit provides opto-coupled isolation for control signals and isolated power supplies for the
IPM’s built-in gate drive and protection circuits. The isolated interface helps to simplify prototype development
and minimize design time by allowing direct connection of the IPM to logic level control circuits.
Features:
? Complete three-phase isolated interface circuit with
brake control and fault feedback
? 2500VRMS isolation for control power and signals
? Standard AMP MTA .100” Input Signal and Control
Power Connectors
? Operates from a single 24VDC supply
? Compact Size 4.7” x 2.9” (73mm x 119mm)
Applications:
BP7A is designed for use with Powerex L-Series six
and seven pack IPMs: 50A-300A 600V and 25A-
150A 1200V.
Use Powerex VLA106-24151 and VLA106-
24154 DC to DC converters for isolated
control power. See Table 1 for
requirements.
Ordering Information: BP7A-LS is a kit containing a bare PCB and four VLA106-24151 DC to DC converters
(For use with L-Series IPMs in package A and B)
BP7A-LB is a kit containing a bare PCB with three VLA106-24151 DC to DC converters
and one VLA106-24154 DC to DC converter
(For use with L-Series IPMs in package C)
BP7A is a bare PCB only.
Note: User must supply Opto-Couplers and passive components to fully populate the BP7A (See Table 2)
1
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