TPA3111D1: Pull-up Resistor for /FAULT pin

Sadanori Kato

Part Number: TPA3111D1

Hi,

Could you please tell me the minimum value for the pull-up resistor which is connected between the /FAULT pin and PVCC ?

Best regards,
Kato

over 7 years ago

0 Shawn Zheng over 7 years ago

TI__Mastermind 24835 points

Hi Kato-san,

Usually SDz pin is connect to FAULTz pin for auto-recovery function. So the min of pul-up resistor depends on whether the voltage on SDz pin can be less than 0.8V when FAULT is triggered, because the max of SDz Vlow is 0.8V. For safty consideration, the recommended min pull-up resistor is ~30kohm to cover all PVCC range.

Best regards,

Shawn Zheng

0 Sadanori Kato over 7 years ago in reply to Shawn Zheng

Guru 36540 points

Hi Shawn-san,

Thank you for your support.

I understood.

Best regards,
Kato

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TPA3111D1: Pull-up Resistor for /FAULT pin