Patent ID: 7928712

Claim:
A circuit comprising: switching circuitry adapted to: receive a switching signal having a switching frequency; transfer energy from a power source to an energy transfer circuit based on the switching signal; and transfer energy from the energy transfer circuit to a load to create a load voltage, which has a first ripple voltage at the switching frequency and a second ripple voltage at a dithering frequency, based on the switching signal; and control circuitry adapted to: provide the switching signal to regulate the load voltage based on the power source and a setpoint; and frequency-dither the switching frequency between a first frequency and a second frequency at the dithering frequency such that the second ripple voltage is approximately zero; wherein the switching signal further comprises: a first transitional period immediately following a period at the first frequency, and immediately preceding a period at the second frequency; and a second transitional period immediately following a period at the second frequency, and immediately preceding a period at the first frequency wherein the first transitional period and the second transitional period compensate an inductor current such that an average inductor current remains substantially constant.