An improved circuit for high performance dc-dc/ac converters

Switched-capacitor DC-to-DC converters can be improved by voltage-tracking-control (VTC) regulation to get high performance. The new type of converter overcomes the drawbacks, such as small ratio of conversion, high sensitivity to parameters of the circuit elements, difficult to control output ripple, etc., which usually exist in conventional switched-capacitor converters. The new approach presented here can also realize DC-to-AC conversion without any substantial change in the circuit.