A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter

A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode con...
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Autor*in:	Thanh Nhat Trung Tran [verfasserIn] Hung-Chia Wang [verfasserIn] Jian-Min Wang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	active-clamp flyback dual-mode control light load valley switching zero-voltage switching

Übergeordnetes Werk:	In: Electronics - MDPI AG, 2013, 11(2022), 9, p 1308
Übergeordnetes Werk:	volume:11 ; year:2022 ; number:9, p 1308

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/electronics11091308

Katalog-ID:	DOAJ079269141

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520			\|a A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter.
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spelling	10.3390/electronics11091308 doi (DE-627)DOAJ079269141 (DE-599)DOAJc65399f7f17d4d76a95bc9ca0c30ad43 DE-627 ger DE-627 rakwb eng TK7800-8360 Thanh Nhat Trung Tran verfasserin aut A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter. active-clamp flyback dual-mode control light load valley switching zero-voltage switching Electronics Hung-Chia Wang verfasserin aut Jian-Min Wang verfasserin aut In Electronics MDPI AG, 2013 11(2022), 9, p 1308 (DE-627)718626478 (DE-600)2662127-7 20799292 nnns volume:11 year:2022 number:9, p 1308 https://doi.org/10.3390/electronics11091308 kostenfrei https://doaj.org/article/c65399f7f17d4d76a95bc9ca0c30ad43 kostenfrei https://www.mdpi.com/2079-9292/11/9/1308 kostenfrei https://doaj.org/toc/2079-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2022 9, p 1308
allfields_unstemmed	10.3390/electronics11091308 doi (DE-627)DOAJ079269141 (DE-599)DOAJc65399f7f17d4d76a95bc9ca0c30ad43 DE-627 ger DE-627 rakwb eng TK7800-8360 Thanh Nhat Trung Tran verfasserin aut A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter. active-clamp flyback dual-mode control light load valley switching zero-voltage switching Electronics Hung-Chia Wang verfasserin aut Jian-Min Wang verfasserin aut In Electronics MDPI AG, 2013 11(2022), 9, p 1308 (DE-627)718626478 (DE-600)2662127-7 20799292 nnns volume:11 year:2022 number:9, p 1308 https://doi.org/10.3390/electronics11091308 kostenfrei https://doaj.org/article/c65399f7f17d4d76a95bc9ca0c30ad43 kostenfrei https://www.mdpi.com/2079-9292/11/9/1308 kostenfrei https://doaj.org/toc/2079-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2022 9, p 1308
allfieldsGer	10.3390/electronics11091308 doi (DE-627)DOAJ079269141 (DE-599)DOAJc65399f7f17d4d76a95bc9ca0c30ad43 DE-627 ger DE-627 rakwb eng TK7800-8360 Thanh Nhat Trung Tran verfasserin aut A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter. active-clamp flyback dual-mode control light load valley switching zero-voltage switching Electronics Hung-Chia Wang verfasserin aut Jian-Min Wang verfasserin aut In Electronics MDPI AG, 2013 11(2022), 9, p 1308 (DE-627)718626478 (DE-600)2662127-7 20799292 nnns volume:11 year:2022 number:9, p 1308 https://doi.org/10.3390/electronics11091308 kostenfrei https://doaj.org/article/c65399f7f17d4d76a95bc9ca0c30ad43 kostenfrei https://www.mdpi.com/2079-9292/11/9/1308 kostenfrei https://doaj.org/toc/2079-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2022 9, p 1308
allfieldsSound	10.3390/electronics11091308 doi (DE-627)DOAJ079269141 (DE-599)DOAJc65399f7f17d4d76a95bc9ca0c30ad43 DE-627 ger DE-627 rakwb eng TK7800-8360 Thanh Nhat Trung Tran verfasserin aut A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter. active-clamp flyback dual-mode control light load valley switching zero-voltage switching Electronics Hung-Chia Wang verfasserin aut Jian-Min Wang verfasserin aut In Electronics MDPI AG, 2013 11(2022), 9, p 1308 (DE-627)718626478 (DE-600)2662127-7 20799292 nnns volume:11 year:2022 number:9, p 1308 https://doi.org/10.3390/electronics11091308 kostenfrei https://doaj.org/article/c65399f7f17d4d76a95bc9ca0c30ad43 kostenfrei https://www.mdpi.com/2079-9292/11/9/1308 kostenfrei https://doaj.org/toc/2079-9292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 11 2022 9, p 1308
language	English
source	In Electronics 11(2022), 9, p 1308 volume:11 year:2022 number:9, p 1308
sourceStr	In Electronics 11(2022), 9, p 1308 volume:11 year:2022 number:9, p 1308
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	active-clamp flyback dual-mode control light load valley switching zero-voltage switching Electronics
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container_title	Electronics
authorswithroles_txt_mv	Thanh Nhat Trung Tran @@aut@@ Hung-Chia Wang @@aut@@ Jian-Min Wang @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
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The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. 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callnumber-first	T - Technology
author	Thanh Nhat Trung Tran
spellingShingle	Thanh Nhat Trung Tran misc TK7800-8360 misc active-clamp flyback misc dual-mode control misc light load misc valley switching misc zero-voltage switching misc Electronics A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter
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topic_title	TK7800-8360 A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter active-clamp flyback dual-mode control light load valley switching zero-voltage switching
topic	misc TK7800-8360 misc active-clamp flyback misc dual-mode control misc light load misc valley switching misc zero-voltage switching misc Electronics
topic_unstemmed	misc TK7800-8360 misc active-clamp flyback misc dual-mode control misc light load misc valley switching misc zero-voltage switching misc Electronics
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title	A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter
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title_full	A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter
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title_sort	dual-mode control scheme to improve light load efficiency for active-clamp flyback converter
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title_auth	A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter
abstract	A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter.
abstractGer	A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter.
abstract_unstemmed	A novel dual-mode control scheme is proposed in this paper that permits the active-clamp flyback (ACF) converter to operate in both the quasi-resonant (QR) mode under light load and the active-clamp mode under medium or heavy load. The mode transition is performed based on the external dual-mode control circuit. In addition, the proposed converter incorporates a new QR mode valley switching (VS) control circuit that reduces switching loss in the main switch by achieving VS. Under medium to full load, the proposed converter becomes an ACF converter designed to achieve zero-voltage switching (ZVS), which reduces switching losses in both power switches. The proposed dual-mode control ACF converter has the following advantages: (1) compared with conventional ACF converters, the proposed ACF converters minimize switching losses by combining VS and ZVS; (2) under light load conditions, the frequency-limiting QR control mechanism is used to avoid disadvantageous switching losses caused by high switching frequencies. The 65 W ACF converter prototype with a DC 155 V input and a DC 19 V/3.42 A output under 65 kHz switching frequency was implemented. The experimental results demonstrate the feasibility of the proposed control scheme. The efficiency of the proposed converter reached 79% at a load of 3.5 W, which is 11% higher than the conventional ACF converter.
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title_short	A Dual-Mode Control Scheme to Improve Light Load Efficiency for Active-Clamp Flyback Converter
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