Patent ID: 7336056

Claim:
A switching power converter comprising: first switching circuitry adapted to receive a DC input signal; second switching circuitry adapted to provide a DC output signal; and control circuitry adapted to: receive the DC output signal and a common duty-cycle timing signal; provide a common duty-cycle setpoint signal based on the DC output signal and an output setpoint, the common duty-cycle setpoint signal having a boost zone corresponding to a boost operating mode and a buck zone corresponding to a buck operating mode, wherein the boost zone and the buck zone do not overlap; when in the buck operating mode, provide a first signal having a first switching duty-cycle based on the common duty-cycle setpoint signal and the common duty-cycle timing signal to control the first switching circuitry; and when in the boost operating mode, provide a second signal having a second switching duty-cycle based on the common duty-cycle setpoint signal and the common duty-cycle timing signal to control the second switching circuitry, wherein the switching power converter substantially regulates the DC output signal based on the output setpoint.