Using Time-Based Control Techniques for Active Rectification

As power converters are ever decreasing in size, ways of controlling power switches fast, reliable and efficient is needed. Using time-based control techniques on integrated circuits benefits in area, power and speeds. In this poster we propose new topologies for active rectification in high and very high frequency resonant converters. These topologies involve both phase-locked and delay-locked loops to achieve zerovoltage switching rectifiers. The delay-locked loop topology is a 1st order circuit, and thus inherently stable and easy to implement. The largest advantage of these topologies is removing the requirements for high power diodes in very high frequency applications.