A zero voltage switching forward converter topology

Yang, Xi; Jain, Praveen; Joós, G.; Jin, Haoyuan

doi:10.1109/intlec.1997.645875

Cited by 16 publications

(3 citation statements)

References 5 publications

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“… The auxiliary switch is turned off while it is conducting current, which generates switching losses and EMI that offset the benefits of the auxiliary circuit [1,5,7,10,13,14,22,23].  The auxiliary circuit causes the main switch or boost diode to operate with higher peak current stress and more circulating current, which increases conduction losses and results in the need for a higher current-rated device for the main switch [2,3,6,8,11,12,15,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Higher Current ZVS-PWM Converter for Industrial Applications

Golbon

Moschopoulos

2013

Electronics

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Abstract:A new auxiliary circuit that can be implemented in DC-DC and AC-DC ZVS-PWM converters is proposed in the paper. The circuit is for ZVS-PWM converters used in applications where high-frequency operation is needed and the load current is higher than that of typical ZVS-PWM converters. In the paper, the operation of a new ZVS-PWM converter is described, its steady-state operation is analyzed, and a procedure for its design is derived and then demonstrated. The feasibility of the new converter is confirmed by experimental results obtained from a prototype.

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Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Higher Current ZVS-PWM Converter for Industrial Applications

Golbon

Moschopoulos

2013

Electronics

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“…So in this paper, we have optimized the efficiency of the synchronous buck converter by eliminating switching losses using soft-switching technique. The voltage-mode softswitching method that has attracted most interest in recent years is the zero-voltage transition [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. This is because of its low additional conduction losses and because its operation is closest to the PWM converters.…”

Section: Introductionmentioning

confidence: 99%

“…This causes the switching losses and EMI to appear, which offsets the benefits of using the auxiliary circuit. In converters such as the ones proposed in [6,12,15,16], the turnoff is very hard. (ii) The auxiliary circuit causes the main converter switch to operate with a higher peak current stress and with more circulating current.…”

Section: Introductionmentioning

confidence: 99%

A Novel Soft-Switching Synchronous Buck Converter for Portable Applications

Panda

Pattnaik

Mohapatra

2008

International Journal of Power Management Electronics

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This paper proposes a zero-voltage-transition (ZVT) pulse-width-modulated (PWM) synchronous buck converter, which is designed to operate at low voltage and high efficiency typically required for portable systems. A new passive auxiliary circuit that allows the main switch to operate with zero-voltage switching has been incorporated in the conventional PWM synchronous buck converter. The operation principles and a detailed steady-state analysis of the ZVT-PWM synchronous converter implemented with the auxiliary circuit are presented. Besides, the main switch and all of the semiconductor devices operate under soft-switching conditions. Thus, the auxiliary circuit provides a larger overall efficiency. The feasibility of the auxiliary circuit is confirmed by simulation and experimental results.

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