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1. (WO2019062263) CONTROL METHOD FOR ASYMMETRIC HALF-BRIDGE FLYBACK CIRCUIT, AND CIRCUIT
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Pub. No.: WO/2019/062263 International Application No.: PCT/CN2018/094819
Publication Date: 04.04.2019 International Filing Date: 06.07.2018
IPC:
H02M 3/335 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
APPARATUS 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
3
Conversion of dc power input into dc power output
22
with intermediate conversion into ac
24
by static converters
28
using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325
using devices of a triode or a transistor type requiring continuous application of a control signal
335
using semiconductor devices only
Applicants:
广州金升阳科技有限公司 MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO., LTD. [CN/CN]; 中国广东省广州市 萝岗区科学城科学大道科汇发展中心科汇一街5号 No.5 Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District Guangzhou, Guangdong 510663, CN
Inventors:
王志燊 WANG, Zhishen; CN
郭启利 GUO, Qili; CN
周耀彬 ZHOU, Yaobin; CN
Agent:
广州知友专利商标代理有限公司 GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD.; 中国广东省广州市 越秀区东风东路555号粤海集团大厦2305-06室 Room 2305-06 Yuehai Group Building, 555 Dong Feng Dong Road, Yuexiu District Guangzhou, Guangdong 510050, CN
Priority Data:
201710885472.327.09.2017CN
Title (EN) CONTROL METHOD FOR ASYMMETRIC HALF-BRIDGE FLYBACK CIRCUIT, AND CIRCUIT
(FR) PROCÉDÉ DE COMMANDE POUR CIRCUIT À TRANSFERT INDIRECT EN DEMI-PONT ASYMÉTRIQUE ET CIRCUIT
(ZH) 一种不对称半桥反激电路的控制方法及电路
Abstract:
(EN) Disclosed are a control method for an asymmetric half-bridge flyback circuit, and a control circuit. The asymmetric half-bridge flyback circuit comprises a main switch S1 and an auxiliary switch S2. The control circuit comprises a sampling circuit and an output voltage comparison circuit, wherein the output voltage comparison circuit outputs a control signal to an additionally arranged pulse width time control circuit, and frequency conversion control over the main switch S1 and the auxiliary switch S2 is achieved by means of a timing circuit and a conduction logic processing circuit, which are additionally arranged, such that the dithering amplitude of an excitation current does not change with an input voltage, a transformer can be designed according to a situation involving a low input voltage, the small size of the transformer is achieved, and the utilization rate within the whole input voltage range is the same.
(FR) L'invention concerne un procédé de commande pour circuit à transfert indirect en demi-pont asymétrique et un circuit de commande. Le circuit à transfert indirect en demi-pont asymétrique comprend un commutateur principal (S1) et un commutateur auxiliaire (S2). Le circuit de commande comprend un circuit d'échantillonnage et un circuit de comparaison de tension de sortie, le circuit de comparaison de tension de sortie émettant un signal de commande à un circuit de commande de durée d'impulsion additionnel, et une commande de conversion de fréquence sur le commutateur principal (S1) et sur le commutateur auxiliaire (S2) est réalisée au moyen d'un circuit de synchronisation et d'un circuit de traitement logique à conduction, qui sont prévus de manière additionnelle, de telle sorte que l'amplitude de modulation d'un courant d'excitation ne change pas avec une tension d'entrée, qu'un transformateur puisse être conçu en fonction d'une situation impliquant une faible tension d'entrée, que la petite taille du transformateur soit obtenue et que le taux d'utilisation dans la plage entière de tension d'entrée soit le même.
(ZH) 本发明公开了一种不对称半桥反激电路的控制方法和控制电路,不对称半桥反激电路包括主开关S1和辅开关S2,控制电路包括采样电路和输出电压比较电路,输出电压比较电路输出的控制信号与增设的脉宽时间控制电路,并通过增设的定时电路和导通逻辑处理电路实现对主开关S1和辅开关S2变频控制,使得励磁电流的抖动幅值不会随输入电压变化,从而可以根据低输入电压的情况进行变压器设计,实现了变压器不仅体积小,且利用率在整个输入电压范围相同的。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)