A power supply control circuit includes a latch including a first latch input for receiving a first logic signal, a second latch input for receiving a second logic signal, and a latch output for providing an output signal. The power supply control circuit further includes a controller coupled to the first and second latch inputs. The controller is configured to generate the first logic signal based on an error signal and a threshold signal and in response to an off-time signal to control timing between pulses in the output signal. The controller is further configured to select one of the error signal and the threshold signal and to generate the second logic signal based on a ramp signal and the one of the error signal and the threshold signal to control a width of the pulse.