Optimal Design Methodology of Zero-Voltage-Switching Full-Bridge Pulse Width Modulated Converter for Server Power Supplies Based on Self-driven Synchronous Rectifier Performance

Sevilay Cetin; Sevilay Cetin

Optimal Design Methodology of Zero-Voltage-Switching Full-Bridge Pulse Width Modulated Converter for Server Power Supplies Based on Self-driven Synchronous Rectifier Performance

Sevilay Cetin

Vol. 16, No. 1, pp. 121-132, Jan. 2016

10.6113/JPE.2016.16.1.121

Full bridge converter

High efficiency

Self-driver

Synchronous rectifier

Zero-voltage switching

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Abstract

In this paper, high-efficiency design methodology of a zero-voltage-switching full-bridge (ZVS-FB) pulse width modulation (PWM) converter for server-computer power supply is discussed based on self-driven synchronous rectifier (SR) performance. The design approach focuses on rectifier conduction loss on the secondary side because of high output current application. Various-number parallel-connected SRs are evaluated to reduce high conduction loss. For this approach, the reliability of gate control signals produced from a self-driver is analyzed in detail to determine whether the converter achieves high efficiency. A laboratory prototype that operates at 80 kHz and rated 1 kW/12 V is built for various-number parallel combination of SRs to verify the proposed theoretical analysis and evaluations. Measurement results show that the best efficiency of the converter is 95.16%.

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Cite this article

[IEEE Style]

S. Cetin and S. Cetin, "Optimal Design Methodology of Zero-Voltage-Switching Full-Bridge Pulse Width Modulated Converter for Server Power Supplies Based on Self-driven Synchronous Rectifier Performance," Journal of Power Electronics, vol. 16, no. 1, pp. 121-132, 2016. DOI: 10.6113/JPE.2016.16.1.121.

[ACM Style]

Sevilay Cetin and Sevilay Cetin. 2016. Optimal Design Methodology of Zero-Voltage-Switching Full-Bridge Pulse Width Modulated Converter for Server Power Supplies Based on Self-driven Synchronous Rectifier Performance. Journal of Power Electronics, 16, 1, (2016), 121-132. DOI: 10.6113/JPE.2016.16.1.121.