Operation analysis of series resonant DC-DC converter with clamped tank capacitor voltage

Abstract

The series resonant type DC-DC converter with clamped tank capacitor voltage is very effective to reduce the resonant tank voltage and to avoid inverter arm short-through due to diode recovery times. However, the clamping diodes make the operation complex, which is difficult to apply the conventional analytical method. In this paper, a numerical method is applied to investigate the operation. The circuit is found to have 108 topological modes and 32 operation modes. The results are validated through experimental results of a proto-type MOS FET circuit.