3-Phase PWM for 3-Phase Inverter

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

I am using an F28069 board and trying to generate a 3-phase PWM for 3-phase inverter. To syncin pin of first PWM block, what should be connected?

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Answers

  • KarenDarnell
    KarenDarnell
    Altair Employee
    edited June 2019

    The synch-in signal to the first unit is a GPIO pin, but you don't have to use it. Just don't check the 'TBCTR=TBPHS on the SYNCHI Pulse.' The first PWM can use its internal counter and subsequent units can sync in a daisy-chained-way to it.

     

    Additionally, you do not have to connect the synout pin to syncin GPIO pin through the hardware. The connection is internal between consecutive triples of PWM units. So unit 1 -> unit 2 -> unit 3, and unit 4 -> unit 5-> unit 6, etc.

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