A ZCT Double-Ended Flyback Converter with Low EMI

Low-power flyback converter with synchronous rectification for a system with AC power distribution

IEC 1000-3-2 regulations impose a reduced harmonic content on any converter with an input power higher than 75 W. However, if the power architecture of the system is based on small on-board converters, and the total power is higher than 75 W, IEC regulations must be fulfilled although each individual converter need not comply with the regulations. In this paper, one of the different possible so...

Active-Clamping Quad-Flyback Converter

An active-clamping quad-flyback converter is proposed to achieve zero voltage switching (ZVS) for all power switches. The secondary sides of quad-flyback converter are connected in parallel to share the load current. Thus, the transformer copper losses and the conduction losses on the output diodes are reduced. Activeclamping part including one auxiliary switch and one clamp capacitor can relea...

Zvt-zct Pwm Dc-dc Boost Converter with High Efficiency

An improved active snubber cell is proposed for ZVT-ZCT PWM DC-DC boost converter. Zero voltage transition (ZVT) turn on and zero current transition (ZCT) turn off is provided by this active snubber cell. There is no extra current or voltage stresses on the main switch. Also, zero current switching (ZCS) turn on ZCT turn off is provided for the auxiliary switch. Although there is no extra volta...

Controlling EMI with A Chaotic Peak Current-mode Boost Converter

In this paper, a novel boost converter is designed where its current mode control is dependent on two reference currents and an external clock. A detailed study on its dynamics is carried out based on its corresponding current mapping function. As demonstrated in both simulations and experiments, by operating the proposed boost converter in its chaotic mode, the electromagnetic interference can...

Active Clamp Zvs Flyback Converter with Output Voltage Douler