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A novel hybrid driving scheme for full-bridge synchronous rectified LLC resonant DC/DC converter is proposed in this paper. With the full-bridge type rectifier, the voltage stress of the synchronous rectifiers (SRs) is well clamped to the output voltage. Also the transformer structure is very simple due to only one secondary winding is needed. Therefore, the converter can utilize SRs with lower breakdown...
This paper proposes a current driving scheme for synchronous rectifier (SR) in the LLC resonant converter with a voltage-doubler rectifier. The voltage-doubler rectifier has a simple-structure transformer which only needs one winding on the secondary side. The voltage stress across SRs is reduced to half of that in a center-tapped rectifier, which means SRs with smaller on resistance can be used....
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...
A new soft switched full bridge converter with phase-shift control is proposed to reduce the circulating loss in primary and the voltage stress in secondary side. Using a coupled winding of the filter inductor, two auxiliary voltage sources are generated to reset the primary current at circulating interval. An auxiliary clamp diode is used to clamp the voltage spike across the rectifier diode, which...
Paper presents a novel LLC resonant converter topology, where voltage stresses of all components in secondary side are half of output voltage. The advantages, which are featured in conventional LLC converter, i.e. being easy to obtain full range ZVS for primary side switches, being easy to obtain ZCS for secondary side diodes, resonant inductors and transformer being easy to be integrated and wide...
In this paper, a novel interleaving control strategy for DC/DC converters is proposed and applied to a new isolated DC-DC converter configuration with two paralleled half-bridge structure at the primary side and a new rectification method at the secondary side of the transformers, aiming at to optimize the design of transformers and reduce the rectifier diodes voltage stresses. The concept of this...
Paper presents a novel LLC resonant converter topology, where voltage stresses of all components in secondary side are half of output voltage. The advantages, which are featured in conventional LLC converter, i.e. being easy to obtain full range ZVS for primary side switches, being easy to obtain ZCS for secondary side diodes, resonant inductors and transformer being easy to be integrated and wide...
In this paper, a novel interleaving control strategy for DC/DC converters is proposed and applied to a new isolated DC-DC converter configuration with two paralleled half-bridge structure at the primary side and a new rectification method at the secondary side of the transformers, aiming at to optimize the design of transformers and reduce the rectifier diodes voltage stresses. The concept of this...
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