UCC21750-Q1: If AIN and APWM are not used, how to connect them?

CharliePE

Intellectual 265 points

Part Number: UCC21750-Q1

Hi,

If the AIN and APWM pins of UCC21750-Q1 are not used, should we leave them Not Connected?

Thanks.

over 5 years ago

0 Don Dapkus over 5 years ago

TI__Guru**** 189401 points

Hi, CharliePE,

AIN has a small current source feeding it. You can either ground it directly, and draw 200 uA of current, or you can tie it to ground via a small capacitor to prevent noise from coupling in. Leave the APWM pin floating in this case.

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0 CharliePE over 5 years ago in reply to Don Dapkus

Intellectual 265 points

Hi Don,

All right. I'll connect AIN to ground via a small cap and leave APWM floating.

Thank you very much for your help.

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UCC21750-Q1: If AIN and APWM are not used, how to connect them?