TPS3431: No output on Watchdog TPS3431 can be meassured

Fabian Milczewski

Prodigy 70 points

Part Number: TPS3431

Hello,

I am using a TPS3431 watchdog in the following circuit:

My aim is to receive an output only when I send the necessary Set1 and WDI signal.

Therefore I am supplying 5V on Set1 and a rectangular 5V signal with a period of 200ms at WDI.

However the output that I receive each time is 5V which results of the pull up resistor.

If I am not using a pull up resistor I measure 0V at the output.

How do I have to change my circuit in order to only have logic high on the output when I apply the WDI and Set1 signal ?

Thank you for your help in advance,

Best regards,

Fabian

over 4 years ago

0 Abhinav.Sharma over 4 years ago

TI__Genius 9375 points

Hi Fabian,

I don't quite understand your application. Can you send me a scope shot of your output? I am having issues understanding what your output is and the output you desire.

Thanks,
Abhinav.

0 Abhinav.Sharma over 4 years ago in reply to Abhinav.Sharma

TI__Genius 9375 points

Fabian,

To follow up on this, have you resolved your issue? I'm going to close this for the time being, let me know if you have more questions here.

Thanks,

Abhinav.

Power management

Power management forum

TPS3431: No output on Watchdog TPS3431 can be meassured