A High-Efficiency QR Flyback DC–DC Converter with Reduced Switch Voltage Stress Realized by Applying a Self-Driven Active Snubber (SDAS)

Proposal of a New High Step-Up Hybrid Switch Converter with Reduced Switch Voltage Stress

In this paper a new step-up DC-to-DC converter with high voltage conversion ratio with small voltage stress is presented. The converter is suitable for the applications where high voltage conversion ratio is required. The proposed converter is different from the conventional Cuk converter and for a given duty ratio provides high conversion ratio with reduced switch voltage stress. Due to low sw...

Zero Voltage Switching of Two-switch Flyback- Forward Converter

FORWARD CONVERTER Jhao-Cyuan Huang, Yong-seng Wong, Kuo-Bin Liu, NSRRC, Hsinchu, Taiwan Abstract The traditional pulse-width-modulated flyback converter power switch has serious electromagnetic interference (EMI) and lower conversion efficiencies problems due to the hard-switching operations. This paper produces a zero voltage switching of flyback-forward converter with an active-clamp circuit,...

Active Clamp Zvs Flyback Converter with Output Voltage Douler

A high efficiency 4-output single inductor DC–DC buck converter with self boosted snubber

This paper presents a single-inductor 4-outputs DC–DC buck converter. In order to independently regulate the four output voltages, a multiple control loop operates on linear combinations of the output voltage errors. An original self-boosted snubber circuit enables load power switches control signals boosting without area and power efficiency penalties. The circuit, fabricated using a 0.5-lm CM...

An Efficiency Step-Up Converter with a Low Switch Stress

A novel approach is proposed for a high step-up and high efficiency converters with a low switch stress. The integrated boost-flyback converter uses coupled-inductor techniques to achieve high step-up voltage with low duty ratio, and thus the slope compensation circuit is disregarded. The proposed circuit topology improving highgain ratio, increasing efficiency, reducing the secondary side of c...