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Motor Controller doesn't output 100% duty

Posted: Sat Apr 10, 2021 4:43 pm
by Robert_e
I'm using the MCP266. When I set the maximum output, I am only reading a 98% duty cycle. Is there a way to get the controller to output a 100% duty cycle?

Re: Motor Controller doesn't output 100% duty

Posted: Wed Jun 02, 2021 11:37 am
by Basicmicro Support
Most mosfet drivers use a boost capacitor to generate the high side gate voltage. This requires recharging the cap which requires turning off the high side for a short period of time. This limits the on-time to around 98%.