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UCC3626: Application issue

Cherry Zhou
Mastermind 22235 points
Part Number: UCC3626

Hi team,

The customer would like to know is it possible to provide the UCC3626 application note, and from the TACH_OUT feedback signal to PWM_I, how to speed up?

Could you help check this issue? Thanks.

Best Regards,

Cherry

  • 0
    TI__Mastermind 26046 points

    Hi Cherry,

    I found information of UCC3626 application with TACH_OUT here in the datasheet:



    You can also use TACH_OUT as an analog input to a comparator with a speed set comparator that enters in PWM_I. The + input to the comparator can be a speed set signal, such as the output of a potentiometer, so the analog signal generates a varying PWM duty cycle output into the PWM_I and PWM_NI pins. 



    Please see the velocity controller schematic (Figure 17) in the datasheet.

    Thanks,
    Aaron