Patent ID: 8396111

Claim:
A switched mode power converter controller (SMPCC) for providing a PWM control signal to a power switch in a switching cycle, the SMPCC controller having a hybrid Digital Pulse Width Modulator (DPWM), the hybrid DPWM effecting the PWM control signal at a switching point at a resolution of N bits across the switching cycle, the hybrid DPWM comprising: a) a counter circuit responsive to a clock signal and determining the switching point at a first resolution, the counter circuit providing an enable output signal at the determined switching point, b) a locked loop for delaying the clock signal to provide multiple clock phases from the clock signal, c) a first multiplexer for selecting a first one of the multiple clock phases and a second one of the multiple clock phases adjacent to the selected first clock phase in response to a received first select signal, d) an interpolator responsive to the selected first and second clock phases and interpolating between the selected two clock phases to provide a plurality of interpolated phases between the selected two clock phases, e) a second multiplexer for selecting one of the plurality of interpolator phases in response to a received second select signal for use as the PWM control signal.