Switched resonator DC/DC converter with a single switch and small inductors

An interleaved zero-voltage-transition (ZVT) pulse-width modulation (PWM) buck converter is proposed in this study. The proposed converter consists of two identical buck converters connected in parallel and an auxiliary circuit. The auxiliary circuit has only one active switch. Zero-voltage switching condition for main switches and also, zerocurrent switching condition for the auxiliary circuit semiconductor components are achieved. Principle of operation and analysis of the proposed converter is provided. Moreover, the extension of the proposed idea to interleaved buckboost, interleaved flyback and interleaved forward converters are presented. A 160 W prototype of the proposed ZVT PWM buck converter is implemented and the results are presented to verify the validity of theoretical analysis.

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High step‐down interleaved buck converter with low voltage stress

Esteki

Poorali

Adib

et al. 2015

IET Power Electronics

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This study presents a four-phase interleaved buck converter with low voltage stress and high step-down conversion ratio. The proposed converter provides an extended duty cycle and low voltage stress for switches and diodes, in high step-down applications. This makes it possible to use switches with lower voltage rating and thus reduce both switching and conduction losses to improve the overall efficiency. Extremely low output current ripple and continuous input current are two other advantages of the proposed converter. Also, the output current can be shared between interleaved modules without using additional current sharing control technique due to charge balance of input and blocking capacitors. All these benefits are obtained without adding any active auxiliary component or using transformers. The experimental results from a prototype of the proposed converter designed for 400-24 V, operating at 0.5 kW, verify the theoretical analysis.

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Switched resonator DC/DC converter with a single switch and small inductors

Cited by 16 publications

References 16 publications

Soft-Switching Converters

Soft-Switching Converters

Auxiliary circuit for zero‐voltage‐transition interleaved pulse‐width modulation buck converter

High step‐down interleaved buck converter with low voltage stress

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