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UCC28070 fpwm

Philip%20Park
Intellectual 1175 points
Other Parts Discussed in Thread: UCC28070, UCC28070A

Hi all,

What are min, max value of fpwm at 40Khz?

On datasheet of UCC28070, when 100khz  min is 95 and max 105khz. when 290kHz, min is 270 and max is 330.

  • 0
    TI__Mastermind 34465 points

    Hi,

    The switching frequency  tolerance of the  UCC28070 is not characterized at 40kHz. However the UCC28070A is functionally equivalent to the UCC28070 and it has a lower minimum switching frequency ( 10kHz as compared to 30kHz). The UCC28070A has a tolerance of + or - 5% from 10.25kHz to 100kHz.

    So you should expect a tolerance of 38kHz to 42kHz with the UCC28070.

    Regards,

    John Griffin