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UCC2805-Q1: OVP

kura
Genius 4840 points
Part Number: UCC2805-Q1
Other Parts Discussed in Thread: UCC2805

 

This is related question to above E2E question.(same customer,same application)

Customer consider to add OVP circuit.

When OVP is detected,they make low COMP pin.We have question in this case.

1.Please let us know amount of time from COMP Low to stop switching(zero duty cycle).

2.Please let us know amount of time from COMP open to start switching. (recovery from OVP)

  • 0
    TI__Mastermind 31580 points
    Hi Kura,

    The response time for the COMP pin going low to stopping switching is similar to the time take to stop switching in response to the CS pin which is typically 70ns as stated in the features on the first page of the datasheet.

    If the COMP pin is released then the controller should start switching within 70ns as well.

    Note that the speed at which the COMP pin can be pulled low and the rate at which is will go high is affected by the values of any compensation components connected to the pin.

    Regards

    Peter
  • 0 in reply to Peter Meaney
    TI__Mastermind 31580 points
    Since there has been no activity for a while no on this post, I hope you have resolved the problem. Please open a new post if you need more help.

    Regards

    Peter