The datasheet of the DRV8432 seems to indicate that the 12V supply needs to provide IVDD of 12mA, and IGVDD_X 8mA typical. This means the 12V supply requires at least 44mA (12mA + 4 x 8mA).
I would really like to use the TI TPS7A4001 voltage regulator to generate the 12V - it will keep my power supply simple and small. I don't need 12V for anything else. The datahseet for the TPS7A4001 specifies a maximum current of 50mA. Will this regulator provide enough current for the DRV8432?