Does the heat sink for the DRV8432 motor driver IC need to be grounded? One of our engineers has a DRV8432 test circuit built up on a perfboard and the heat sink is grounded with an alligator clip lead. This lead became disconnected from the heat sink and the DRV8432 failed. There is nothing in the documentation that we can find stating the heat sink should be grounded. We are trying to determine if the heat sink ground disconnect caused the chip to fail or if there is another issue.
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