A novel single-stage AC/DC converter is proposed in this letter. The converter is designed by integrating a sepic circuit and a flyback circuit, the circuit work in the quasi-resonance state, and the switch is turned on in the zero voltage switching (ZVS) state, which decreased the switching losses of the converter Streszczenie. Opisano nowy konwerter AC/DC. Układ pracuje w stanie quasi-rezonan...

This paper presents dual-switch Quasi-Resonant (QR) flyback topology as a cost effective and reliable alternative to the LLC resonant converter for energy efficiency regulation. The proposed topology shows excellent efficiency performance, while maintaining simple design of the conventional flyback converters. It offers higher efficiency than LLC resonant converter at medium and light load, res...

This paper presents an off-line integrated full ballast to supply a 35 W assembly of Power LEDs. The proposed solution integrates an input PFC stage (a flyback converter operating in DCM) and a DC-DC output converter (a buck converter) into a single switch power stage, operating with peak current control. As it will be shown, this control scheme maintains the current through the load constant, ...

The paper presents design and performance evaluation of two-stage ac adapters for notebook computers which deliver 70 W from the universal line. Three versions of the flyback converter, as well as the PWM and resonant half-bridge converter were evaluated and compared with respect to their efficiency, component stress, output filter size, and complexity.

The variation of the breakdown voltage of a low frequency electrical pulsed discharge due to an external electrode is reported. The discharge tube consists of a thin glass tube having two internal hollow electrodes. A thin copper foil wrapped around the glass tube forms the external electrode. The internal electrodes of the discharge tube are supplied by a flyback converter. Its operating point...

This paper proposes a Z-source converter based flyback converter with a new active clamp control method. With this control methodology, the energy in the leakage inductance can be fully recycled. The absorbed leakage energy transferred to the output and input side will achieve zero voltage switching for the main switch. Thus, switching loss can be reduced. A Z-source converter network is incorp...

The paper presents the implementation of a Verilog-A based, behavioral macro model for a flyback power converter to be used in a Spice based simulator (SpectreS by Cadence©). The paper discusses the effectiveness of this simulation strategy in reducing the complexity of a simulation problem, namely the analysis of a new smart-power integrated circuit (IC). The IC consists in a flyback PFC contr...

Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...