Hi,
How do I properly sync the switching frequency of the phase shift full bridge PWM every cycle or every 4 cycles?
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Hi,
How do I properly sync the switching frequency of the phase shift full bridge PWM every cycle or every 4 cycles?
David, we have an app note that we did for synchronizing two UCD3138128s together. We actually used two signals sent by one UCD to the other. There is a slow signal to let the other UCD match frequencies, and a fast signal to permit 180 degrees out of phase.
Then we used the marvelous but complex UCD DPWM edge generation and intra-mux capability to move the timing differences that still occur away from the dead times and into the middle of an on-time where it doesn't have much effect. We have a very preliminary app note on how we did it.