Phase controlled class E^2 dc/dc converter with single RF choke core <Abstract> In this paper, we propose phase controlled class E2 dc/dc converter that is composed of phase controlled class E inverter and class E rectifier. Moreover, to minimize the circuit scale in phase controlled class E2 dc/dc converter, we propose reduction of the number of RF choke cores in the converter by coupling two RF choke cores to one. These proposed circuits achieve the output control with fixed frequency and continuous control in the load variations. The measured power conversion efficiency of the converter with single RF choke core is over 84.9% with 5.6W output power at operating frequency of 1.0MHz. |