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UCC28070A: Ucc28070A

omid hamidi
Intellectual 405 points
Part Number: UCC28070A

Best solution for disable ic under 170v ac ?

Used pin vinac  or used shutdown pin ?

Reference how can sure ic stop under voltage (170v)

  • 0
    TI__Mastermind 34465 points

    Hello Omid,

    The best way to disable the pwm is to used a comparator pulldown on the VSENSE pin.

    So when the input is below 170Vac  VSENSE is pulled below the open loop protection threshold of 0.75V

    I do not have a reference design available to share with you but you will need to design so you will need to design the comparator circuit by yourself.

    Regards

    John