Hi, I was wondering if it would be possible to change the capacitor connected to the CWD pin on the TPS3431 on the fly.
My thought would be to have a 1uF capacitor connected between the CWD pin and an N-Fet to GND and also connect a 15nF between the CWD pin and ground. So when the Fete was enabled the CWD pin would see them in parallel and then when the fet was disabled it would see just the 15nF.
The idea is to give a ~60s WDI window to allow my processor to boot then when the system is up and running switch out the capacitor and have a ~1s WDI period.
So on power up the WDO is pulled up and wont trigger for 60s. Then I can start clocking the WDI pin when booted and lower the period?
Thanks