A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter

Abstract This letter proposes a simplified zero‐voltage switching (ZVS) detection circuit and switching loss dynamic optimisation method. The proposed circuit and tuning method can automatically adjust the switching frequency of a synchronous buck converter to work in critical current mode to realis...

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Autores principales:	Sizhao Lu, Xiaoting Deng, Siqi Li
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/2733a60b87d7468eaac3c9af88137567
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spelling	oai:doaj.org-article:2733a60b87d7468eaac3c9af881375672021-11-16T10:15:44ZA simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter1350-911X0013-519410.1049/ell2.12065https://doaj.org/article/2733a60b87d7468eaac3c9af881375672021-01-01T00:00:00Zhttps://doi.org/10.1049/ell2.12065https://doaj.org/toc/0013-5194https://doaj.org/toc/1350-911XAbstract This letter proposes a simplified zero‐voltage switching (ZVS) detection circuit and switching loss dynamic optimisation method. The proposed circuit and tuning method can automatically adjust the switching frequency of a synchronous buck converter to work in critical current mode to realise ZVS under a wide load range. The advantages of the proposed circuit and method are that ZVS detection and switching loss dynamic optimisation can be realised by only one ZVS detection circuit, which simplifies the detection circuit, further improves the power density and reduces the number of analogue‐to‐digital conversion channels of the digital signal processor. A prototype of the synchronous buck converter with a rated input voltage of 100 V is established to verify the effectiveness of the proposed ZVS detection circuit and switching loss dynamic optimisation method. By using the proposed detection circuit and optimisation method, the switching loss of the MOSFETs has been greatly reduced and an efficiency improvement of nearly 1% at peak output power has also been achieved.Sizhao LuXiaoting DengSiqi LiWileyarticleElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENElectronics Letters, Vol 57, Iss 2, Pp 71-73 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Electrical engineering. Electronics. Nuclear engineering TK1-9971 Sizhao Lu Xiaoting Deng Siqi Li A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
description	Abstract This letter proposes a simplified zero‐voltage switching (ZVS) detection circuit and switching loss dynamic optimisation method. The proposed circuit and tuning method can automatically adjust the switching frequency of a synchronous buck converter to work in critical current mode to realise ZVS under a wide load range. The advantages of the proposed circuit and method are that ZVS detection and switching loss dynamic optimisation can be realised by only one ZVS detection circuit, which simplifies the detection circuit, further improves the power density and reduces the number of analogue‐to‐digital conversion channels of the digital signal processor. A prototype of the synchronous buck converter with a rated input voltage of 100 V is established to verify the effectiveness of the proposed ZVS detection circuit and switching loss dynamic optimisation method. By using the proposed detection circuit and optimisation method, the switching loss of the MOSFETs has been greatly reduced and an efficiency improvement of nearly 1% at peak output power has also been achieved.
format	article
author	Sizhao Lu Xiaoting Deng Siqi Li
author_facet	Sizhao Lu Xiaoting Deng Siqi Li
author_sort	Sizhao Lu
title	A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
title_short	A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
title_full	A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
title_fullStr	A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
title_full_unstemmed	A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
title_sort	simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/2733a60b87d7468eaac3c9af88137567
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A simplified zero‐voltage switching detection circuit and switching loss dynamic optimisation method for synchronous buck converter

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