I am currently using the UCC2800-EP PWM control chip and am experiencing a duty cycle instability. After extensive test and diagnosis I belive I have narrowed the cause of the issue down to the internal error amplifier.
So I am wandering what value components (magnitude) are typical for the error amplifier? It seems to be tied to a disturbacne in the Vref when the output transitions, that is not being damped out. So I am wandering if the internal current limit of the error amplifier is causing a nonlinearity and hence an instability.
Thanks
John
