A “quasi-master-time-base” circuit is used to periodically resynchronize the individual PWM generators to a know reference signal. This quasi-master-time-base will be at the lowest frequency relative to all of the PWM output frequencies, wherein all of the PWM output frequencies are at the same frequency or at an integer multiple frequency(ies) of the quasi-master frequency. This “quasi-master-time-base” circuit allows for minor timing errors due to user PWM configuration errors and/or update errors, and still yields stable PWM signal outputs that remain synchronized to each other.