Hi,
I plan to use the RESET pins of the DRV8412 / 8432 to force the controller into high-Z state in order to get this kind of operation:
1. Set up PWM duty cycles; Enable chip using RESET pins; run variable duty cycle PWM @ approx 100 kHz switching frequency for about 2 ms;
2. Disable chip using RESET pins to force all output MOSFET's to the off state; keep chip in off state for 20 ms
3. Go back to state 1
Basically, the missing information about the RESET pin latency is answered by Rick in this post https://e2e.ti.com/support/applications/motor_drivers/f/38/p/449494/1616134 where 50 ns has been measured.
However, the chip was most likely not intended for the kind of operation that I need, so my basic question is whether or not the described operation will work - or do my planned use of RESET add some extra stress to the device that can lead to malfunction?
Thanks,
-Michael