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For the medium power level adapter applications with high output current and low output voltage, the synchronous rectifier is always necessary for LLC resonant converter obtaining high conversion efficiency. This document presents a novel primary current detecting concept for the current driving of SRs, which can help to reduce the complexity of secondary-side PCB layout and the conduction loss of...
Phase-shift full-bridge (PSFB) Dc/Dc converter has been investigated for decade years and many auxiliary techniques and improvements have been proposed already in the foregoing works to overcome its inherent drawbacks, such as narrow ZVS range for the lagging leg switches, large duty cycle loss and primary-side circulation loss with heavy output load. However, the additional loss and cost are always...
With the rapid development in portability of the consumer electronics, high conversion efficiency and high power density are going to be more and more important challenges of the power supply adapter design. Conventional centre tapped rectifier configuration with the capacitive output filter is widely used in the front-end Dc/Dc converters because of its inherent advantages in high efficiency and...
Nowadays, with the rapid development of the consumer electronics, the power density of the power supply adapter is going to be much higher. To reduce the voltage stress on secondary-side rectifiers and the secondary-side conduction loss, the capacitive output filter is widely used, in the half-bridge LLC resonant converter and in the soft-switched phase-shift full-bridge converter with primary-side...
This paper presents the detailed optimum design considerations for a presented synchronous rectified soft-switched phase-shift (PS) full-bridge (FB) converter with primary-side energy storage inductor, which is fit for low output voltage and high output current applications. Although this converter can be operated in CCM, BCM (boundary continues mode) and DCM respectively, the optimum analysis and...
This paper presents a synchronous rectified Soft-switched Phase-Shift (PS) Full-bridge (FB) converter with primary-side energy storage inductor, which can be utilized in low output voltage and high output current applications. This converter can be operated in CCM, BCM and DCM respectively based on different designs. However, optimum design consideration indicates that the BCM and DCM operation modes...
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