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Texas Instruments ISO5851EVM: I would like to apply a voltage of 500V between the collector and emitter. Is it possible by changing the parts on the evaluation board?

Gate Driver Isolated Gate Driver

The PCB layout of the ISO5851EVM itself is not designed to withstand high voltages such as 500V, so it is not possible to change the parts.
Although it is not sold as a board, there is a reference design "TIDA-00195" that supports 1200V, 50A to 200A. Design files including schematics and Gerber files are available for your reference.

http://www.ti.com/tool/TIDA-00195

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