Hello.
I'm working on a frequency inverter for single phase and I'm using CI ir2111, my train of PWM pulses enter, but all the exits are on the rise, can someone tell me why?

 

When you hijack a year old thread - http://forum.allaboutcircuits.com/showthread.php?t=9091 - it can be confusing. Always start a new thread for your topics.

Without a schematic, we can only guess about the problem. Does -

the exits are on the rise

- mean that the outputs all all high?