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UCC28180: Power factor correction for small power supplies

Danilo A.
Mastermind 28560 points
Part Number: UCC28180

Hi Team,

Our customer would like to know if is is economical to implement power factor correction in small power supplies such as a phone charger. According to our customer, 

I am currently working on an led driver cct and i've gotten curious if power factor correction can also be applied in small power supplies? From my understanding, there is need for a large bulk capacitor. Is this usually the case? I am using ucc28180. In short, is it economical to implement power factor correction in a phone charger?

Regards,

Danilo

  • 0
    TI__Guru 50030 points

    Hi Danilo,

    It really depends on the power required. For sub-75W adapters and chargers, PFC is currently optional for worldwide shipments. 

    As for the size of the capacitor, it is really a function of how much ripple you can handle and manage the worst-case load transients. 

    I did find an interesting potential reference design that might be a good starting point for this. It is using the UCC28180 as a Buck PFC (TIDA-00652). 

    Let me know what you think.

  • 0 in reply to JCHK
    TI__Mastermind 28560 points

    Hi JCHK,

    Thank you for very much for your response. 

    Regards,

    Danilo