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so where does the 1khz fit in ?


i expected more like this
9942

you need to have a good look at the data sheet
valid cwg input's :-
the nco
a clc output
any of the ccp /pwm modules
the dsm output

valid clc input's:-
the nco
any of the ccp /pwm...

or use the clc module to steer the low freq osc,
should be shoot through proof if 1khz osc had adequate dead time
9939

i can't see what you are trying to do. the spice sim does not help.

its easy enough to modulate a 1khz pwm signal @50hz , it's easy to lock a h-bridge one way or another.
i am having difficulty...

why not use the CWG module, with appropriate steering all modes are possible