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Bipolar output using SpeedVal Kit

Ash2002
Ash2002 Contributor Level 1
edited May 2023 in Module Products

I am trying to find out if there is any reason why I could not use the following SpeedVal Evaluation Platform configuration to generate a Bipolar output e.g. +800V to -800V and a sinusoidal waveform about 0V.

The EVAL-ADUM4146WHB1Z Gate Drive Module does support Bipolar HV Supplies for a H-Bridge.

Bipolar.PNG

See this example from the data sheet, obvously the EVAL board provides Dual Drivers for High and Low Side:

Bipolar 2.PNG

I hope to use the MOD-PWR-MM-C3M0075120J H-Bridge module and

connect HS+ to +800V and HS- to -800V, essentially like this:

Module 2.PNG

I need to connect my PSU ground to the Mid-Point, as shown on the schematic for MOD-PWR-MM-C3M0075120J.

H-Bridge 1.PNG

The Mid-point seems to be also called the Switch-Node in the user guide:

H-Bridge 2.PNG

On the Motherboard, there is what looks like a screw terminal for the Mid-point.

So finally my question is, using the modules listed above, if I connect a Dual PSU, GND to the Mid-point, +800V to the HS+ (Bus+) and -800V to the HS- (Bus-), would this work? Is it recommend and what other issues might there be? Is there some jumper setting or other config that needs to change?

Many thanks

MB-1.PNG


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