Figure of merit for selecting super-Junction MOSFETs in high efficiency voltage source converters

Andrew Hopkins; Neville McNeill; Philip Anthony; Philip Mellor

doi:10.1109/ECCE.2015.7310195

Figure of merit for selecting super-Junction MOSFETs in high efficiency voltage source converters

Andrew Hopkins, Neville McNeill, Philip Anthony, Philip Mellor

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

7 Citations (Scopus)

Abstract

Silicon super-junction MOSFETs have very low on-state resistances and fast switching characteristics. However, their use in voltage-source converters is hindered by the poor reverse recovery performance of their body drain diode and an adverse output capacitance characteristic. These both act to increase the overall switching loss. The on-state resistance and output capacitance characteristics of super junction devices are both related to the area of the silicon die. As this increases, the on-state resistance decreases but the output capacitance increases. A figure of merit is evaluated with both predicted and experimental results using a 400-V, DC-DC synchronous buck-converter operating over a range of output currents and switching frequencies.

Original language	English
Title of host publication	2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Place of Publication	Piscataway, N.J.
Publisher	IEEE
ISBN (Print)	978-1-4673-7151-3
DOIs	https://doi.org/10.1109/ECCE.2015.7310195
Publication status	Published - 24 Sep 2015
Externally published	Yes

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Keywords

MOSFET
switching loss
capacitance

Cite this

Hopkins, A., McNeill, N., Anthony, P., & Mellor, P. (2015). Figure of merit for selecting super-Junction MOSFETs in high efficiency voltage source converters. In 2015 IEEE Energy Conversion Congress and Exposition (ECCE) Piscataway, N.J.: IEEE. https://doi.org/10.1109/ECCE.2015.7310195

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abstract = "Silicon super-junction MOSFETs have very low on-state resistances and fast switching characteristics. However, their use in voltage-source converters is hindered by the poor reverse recovery performance of their body drain diode and an adverse output capacitance characteristic. These both act to increase the overall switching loss. The on-state resistance and output capacitance characteristics of super junction devices are both related to the area of the silicon die. As this increases, the on-state resistance decreases but the output capacitance increases. A figure of merit is evaluated with both predicted and experimental results using a 400-V, DC-DC synchronous buck-converter operating over a range of output currents and switching frequencies.",

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N2 - Silicon super-junction MOSFETs have very low on-state resistances and fast switching characteristics. However, their use in voltage-source converters is hindered by the poor reverse recovery performance of their body drain diode and an adverse output capacitance characteristic. These both act to increase the overall switching loss. The on-state resistance and output capacitance characteristics of super junction devices are both related to the area of the silicon die. As this increases, the on-state resistance decreases but the output capacitance increases. A figure of merit is evaluated with both predicted and experimental results using a 400-V, DC-DC synchronous buck-converter operating over a range of output currents and switching frequencies.

AB - Silicon super-junction MOSFETs have very low on-state resistances and fast switching characteristics. However, their use in voltage-source converters is hindered by the poor reverse recovery performance of their body drain diode and an adverse output capacitance characteristic. These both act to increase the overall switching loss. The on-state resistance and output capacitance characteristics of super junction devices are both related to the area of the silicon die. As this increases, the on-state resistance decreases but the output capacitance increases. A figure of merit is evaluated with both predicted and experimental results using a 400-V, DC-DC synchronous buck-converter operating over a range of output currents and switching frequencies.

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KW - switching loss

KW - capacitance

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DO - 10.1109/ECCE.2015.7310195

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BT - 2015 IEEE Energy Conversion Congress and Exposition (ECCE)

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Access to Document

10.1109/ECCE.2015.7310195

http://ieeexplore.ieee.org/document/7310195/