• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 737 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC2818: Difference between UCC2818 and UCC28180 PFC controller

Aneesh TS
Expert 1735 points
Part Number: UCC2818

Dear TI experts,

I wanted to understand what is the major difference between UCC2818 and UCC28180 PFC controller?

UCC2818 looks so complex and if UCC28180 looks simple.

Why someone should prefer UCC2818  instead of  UCC28180  and what is the advantage of UCC2818 over UCC28180?

Regards

Aneesh

  • 0
    TI__Mastermind 34465 points
    Hello Aneesh,
    The UCC2818 is an older 16 pin CCM pfc controller but it does have a few significant features relative to the newer 8 pin UCC28180 CCM pfc.
    For example the UCC2818 has a multiplier block and this allows the controller to limit the power delivered to the load. The UCC28180 does not have a multiplier and its input current limit will have the same current limit at low line and high line. The UCC2818 has an OVP/Enable block that can be used for brownout or overvoltage protection. The UCC28180 does not have an internal brownout protection.
    However the UCC28180 does meet the requirements for most new applications of high power pfc controllers.
    It has a minimum of external component ,easy to use with a large range of design references and application information.
    It has a high speed driver, an enhanced dynamic response voltage amplifier for fast transient response. It has multiple levels of fault protection and is capable of a wide switching frequency range.

    Regards
    John
  • 0 in reply to John Griffin1
    Expert 1735 points

    Dear John,

    Thank you for sharing the information

    I have some more doubts regarding those PFC controller

    1. Is the function of multiplier block to limit the power delivered to load?

    2.  Is there any open loop protection in UCC2818 ?

    3. What is meant by CCM PFC controller?. Does this CCM PFC controller cant be designed for DCM mode?

    Regards

    Aneesh

  • 0 in reply to Aneesh TS
    TI__Mastermind 34465 points
    Hello Aneesh,
    I believe the initial post was answered in my previous reply.
    If you have any other queries pleas open a new post.
    Regards
    John