PMP20873: What is the function of C110 in the circuit?

Yi-Hsuan Tsai

Prodigy 110 points

Part Number: PMP20873

Tool/software:

Hi everyone,

I was wondering if C110 is necessary in the circuit?

If so, what is its role?

Best Regards

Yi-Hsuan Tsai

7 months ago

0 Sheng-yang Yu1 6 months ago

TI__Expert 4810 points

Hi,

C110 is the Y-cap for common mode noise consideration. If you use PMP20873 PFC stage as the 1st stage of a PSU before an isolated converter, that capacitor is needed.

0 Yi-Hsuan Tsai 6 months ago in reply to Sheng-yang Yu1

Prodigy 110 points

Hi Mr. Yu,

Thank you for replying me.

Best Regards

Yi-Hsuan Tsai

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PMP20873: What is the function of C110 in the circuit?