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CCS/TMS320F28335: HRPWM on ePWMxB

Etiam
Intellectual 730 points

Part Number: TMS320F28335
Other Parts Discussed in Thread: TMS320F28377D

Tool/software: Code Composer Studio

Hello,

I would like to use HRPWM on F28335. I've read that only ePWMxA channel has this option. Is it possible to set then ePWMxB as ePWMxA complementary in order to control one phase-leg complementary switches? Doing this,  will PWMxB  have ePWMxA resolution or this is impossible?

TMS320F28377D would be suitable for doing this since it has HRPWM control on both PWM channels?

Thank you very much

  • 0
    TI__Genius 10820 points

    Hi,

    You are correct. Only ePWMxA channel can be high resolution on F28335. You could still use the xB output with regular resolution, if that is acceptable for your application. If you need high resolution on two outputs using F28335, you could use xA outputs of separate PWM modules to achieve the same result as high resolution on xA and xB of the same module, as long as you have enough PWM modules available.

    F28377D has HRPWM capability on both xA and xB channels.

    I hope this helps.

    Hrishi