UCC21750-Q1: UCC21750 APWM pin

Xinchao Liu

Part Number: UCC21750-Q1
Other Parts Discussed in Thread: UCC21750

Dear TI team:

One question about UCC21750 APWM pin： If this pin is connected to GND through a 10k resistor, will it cause some noise? If this PIN does not need to be used, what is the recommended connection method?

over 2 years ago

0 Pratik Adibatla over 2 years ago

TI__Expert 8303 points

Hi Xinchao,

Thanks for reaching out. It's highly recommended to leave the APWM pin floating (not connected) when not used.

Best,

Pratik

0 Xinchao Liu over 2 years ago in reply to Pratik Adibatla

Prodigy 120 points

Dear，Pratik:

Thank you very much!

I also want to know, if this pin is connected to ground through a resistor, what bad effects will it have?what maybe happened？

Power management

Power management forum

UCC21750-Q1: UCC21750 APWM pin