Part Number: TPA3221 Hi,
The output FETs go into a Hi-Z state after the ramp down is complete if /RESET is asserted to low when TPA3221 works normally. Then, TPA3221 cannot return to the normal mode and switching of the PWM output doesn't start if /RESET…
Thank you for the comment.
I cannot verify this symptom as I don't have TPA3221EVM, so could you please double-check whether this symptom is replicated by using the EVM ?
Best regards, Kato
That reset circuit works best when the voltages it monitors are the same ones the device uses. For this reason the latest TPA3221EVM (releasing soon) uses the board 5V instead of the 15V on the resistor divider as shown. I would use the same resistor…