A Cost-Effective Synchronous Rectifier Gating Signal Scheme for Constant Frequency Resonant Converters

In this paper, a novel gating signal scheme for synchronous rectifiers used in constant frequency current-type resonant converters is presented. The advantage of the presented circuit is its low component count when implemented with discrete components, and its ability to be fabricated as an integrated circuit. The gating scheme were derived based on analytical and experimental waveforms from a CLL resonant asymmetric pulse-width-modulated (APWM) converter. The schematic of the logic blocks required to implement the circuit were presented, along with experimental results to prove its legitimacy