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1. WO2020093872 - ZERO-VOLTAGE PFC CONVERTER

Publication Number WO/2020/093872
Publication Date 14.05.2020
International Application No. PCT/CN2019/112794
International Filing Date 23.10.2019
IPC
H02M 3/158 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
158including plural semiconductor devices as final control devices for a single load
H02M 1/42 2007.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
CPC
H02M 1/4225
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
4208Arrangements for improving power factor of AC input
4225using a non-isolated boost converter
H02M 2001/0054
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
0048Circuits or arrangements for reducing losses
0054Transistor switching losses
H02M 3/158
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
158including plural semiconductor devices as final control devices for a single load
Applicants
  • 广州金升阳科技有限公司 MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 何垒 HE, Lei
  • 刘湘 LIU, Xiang
Agents
  • 广州知友专利商标代理有限公司 GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD.
Priority Data
201811316874.207.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ZERO-VOLTAGE PFC CONVERTER
(FR) CONVERTISSEUR PFC À TENSION NULLE
(ZH) 一种零电压PFC变换器
Abstract
(EN)
The present invention provides a zero-voltage power factor correction (PFC) converter, comprising a main power unit 101, an output voltage detection unit 102, an error amplification unit 103, a logic control unit 104, a drive unit 105, and a negative current detection unit 106; a first output terminal SW1 of the drive unit 105 is connected to a gate of a main switch tube in the main power unit, and controls the opening and closing of said main switch tube; a second output terminal SW2 of the drive unit 105 is connected to a gate of a synchronous rectifier tube in the main power unit, and controls the turning on and off of said synchronous rectifier tube; the negative current detection unit 106, upon detecting that the negative current of the inductor reaches a set current threshold, turns off the synchronous rectifier tube. Under different instantaneous input voltage conditions of alternating-current input, the main switch tube is turned on for a fixed time to perform a PFC function. In the present invention, under high-voltage input conditions, it is still possible to achieve zero voltage turn-on and PFC functionality, which is conducive to improving the efficiency of a product under high-voltage input and also is more conducive to making the product more high-frequency and miniaturized.
(FR)
La présente invention concerne un convertisseur à correction du facteur de puissance (PFC) à tension nulle, comprenant une unité d'alimentation principale 101, une unité de détection de tension de sortie 102, une unité d'amplification d'erreur 103, une unité de commande logique 104, une unité d'attaque 105 et une unité de détection de courant négatif 106 ; une première borne de sortie (SW1) de l'unité d'attaque 105 est connectée à une grille d'un tube de commutation principal dans l'unité d'alimentation principale, et commande l'ouverture et la fermeture dudit tube de commutation principal ; une seconde borne de sortie (SW2) de l'unité d'attaque 105 est connectée à une grille d'un tube redresseur synchrone dans l'unité d'alimentation principale, et commande le blocage et le déblocage dudit tube redresseur synchrone ; l'unité de détection de courant négatif 106, lorsqu'elle détecte que le courant négatif d'une bobine d'inductance atteint un seuil de courant défini, met le tube redresseur synchrone à l'état bloqué. Dans différentes conditions de tension d'entrée instantanée d'une entrée en courant alternatif (CA), le tube de commutation principal est mis à l'état passant pendant une durée fixe pour effectuer une fonction PFC. Dans la présente invention, dans des conditions d'entrée à haute tension, il est encore possible de réaliser un déblocage à tension nulle et une fonctionnalité PFC, ce qui est favorable à l'amélioration de l'efficacité d'un produit soumis à une entrée haute tension et est également plus favorable à rendre le produit mieux adapté aux hautes fréquences et miniaturisé.
(ZH)
本发明提供一种零电压PFC变换器,包括主功率单元101、输出电压检测单元102、误差放大单元103、逻辑控制单元104、驱动单元105、负电流检测单元106,驱动单元105的第一输出端SW1与主功率单元中的主开关管的栅极连接,控制所述主开关管的开通与关断,驱动单元105的第二输出端SW2与主功率单元中的同步整流管的栅极连接,控制所述同步整流管的开通与关断;负电流检测单元106检测所述电感负向电流达到设定电流阈值时,关断所述的同步整流管。在交流输入的不同瞬时输入电压条件下,主开关管的导通为固定时间,实现PFC功能。本发明在高压输入条件下,仍然能够实现零电压开通和PFC功能,有利于提升产品高压输入时效率,也更有利于实现产品高频化和小型化。
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Latest bibliographic data on file with the International Bureau