2021-01-02, 10:55 PM
Are the INA/INB/PWM signals clean and solid 5V (when on)? (Do you have a scope?)
You could take the VNH5019 out of circuit and just test it on your bench. 12V to VIN, VCC and PWM to 5V, then INA or INB to 5V. You should see 12V across OUTA and OUTB.
You could take the VNH5019 out of circuit and just test it on your bench. 12V to VIN, VCC and PWM to 5V, then INA or INB to 5V. You should see 12V across OUTA and OUTB.