Chong Wang

TL;DR: A novel digital peak current control method with two pulse width modulation modes and two pulse frequency modulation modes is utilized to realize constant output current control in both DCM mode and CCM mode to reduce the cost.

TL;DR: In this article, a DAC sampling method was proposed to improve the dynamic responses of a multimode controlled primary-side regulation flyback converter, and a dynamic module was introduced to monitor the variation of the output voltage to improve dynamic performance.

TL;DR: This scheme uses a digital ramp sampling method to sample output voltage in both discontinuous conduction mode (DCM) and CCM, and proposes a voltage adjustment strategy to adjust sampling errors in CCM without weakening the stability in the load-switch process.

TL;DR: In this article, a single-switched quasi-resonant flyback converter that features low switching loss and low switching noise at high switching frequency is investigated in order to realize near fully soft switching, a resonant inductor of primary side and an resonant capacitor of secondary side are utilized to recycle the transformer leakage energy and realize zero-current switching at turn off and valley switching (VS) at turn on of the primary switch.

TL;DR: In this article, a high-switching-frequency single-switched quasi-resonant flyback converter that features low switching loss and low switching noise is proposed, where a resonant inductor of primary side and a resonance capacitor of secondary side are utilized to recycle the transformer leakage energy and realize zero-current switching (ZCS) at turn-off and valley switching (VS) at turning-on of the primary switch, and ZCS turnoff of diode.