Patent AU-2016269448-B2 (AU)
Title: Power converter and switching power supply device
Inventor: ZUO SHIJUN
IPC: H02M3/156
Filed: 2016-01-28
Granted: 2019-04-04
Abstract: (12) tflIA*MPieSA IW (10) (43)E~# WO 2017/004984 A1 2017 *1 f 12 (12.01.2017) WIPO I PCT (51) 0$4*19* : , MWI[[n* fi EX RM) LHI]j ffl, A r L 13-16 H02M 3/156 (2006.01) W, Guangdong 518057 (CN)o (21) K E$4f: PCT/CN2016/072478 (74) WA#A: [m (22) 049$4F*F 2016 1 A28 H (28.01.2016) (CENFO INTELLECTUAL PROPERTY AGENCY); FP~~ ~ N dJ )[ *iE n* Lf )dJ 3838 FS'itY! (25) $jft : R 9 ML 5t%_n 210-212 ( F )n* ; r 1 tii ), (26) '2 9c: Guangdong 518052(CN)o 201510394324.2 2015 ) 7 A¶ 7 H (07.07.2015) CN JP): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, (71) i*A& : [II![-RGB 4L#IjR-N R (SHEN- CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, Fl, GB, ZHEN SKYWORTH-RGB ELECTRONIC CO., LTD.) GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, [CN/CN];t'[ }'J; j O JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, iYA 13-16 , G uangdong518057(CN) o XV1[[ LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, 4i (SHENZHEN SKY- NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, WORTH SEMICONDUCTOR DESIGN CENTER RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, CO.LTD) [CN/CN]; D T DESIGN dJCEN SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, S--'ijt 15W B1503 , Guangdong 518057 VCVNLALMLWO = (CN)0 (84)I t5(t WL t -iTVflttPW t)A) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, M(72) A :( ZUOhSijun);FF S RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), rI[ (AM, AZ, dJ gvdj A 13-16 , Guangdong BY, KG, KZ, RU, TJ, TM), V YIH (AL, AT, BE, BG, CH, 518057 (CN)o iIA (CHEN, Lu); I CY, CZ, DE, DK, EE, ES, Fl, FR, GB, GR, HR, HU, IE, M dJiExRM I ' )iFY, A fL 13-16 W, Guang- IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, dong 518057 (CN) * W ft (TENG, Mouyan);+FP1 (54) Title: POWER CONVERTER AND POWER SUPPLY SWITCHING DEVICE - (5 4)~U#t 4 kF t -/_20 .. T U 1 13 IRX Vo 40 ILoad-Info ' 12 I K2: C RL 23Currentsamplngmole 30 Deteconcrcui 1 <(57)Abstract: Apower conveterand apowersupply switchingdevice. Thepower convetercomprisesanenergy storage output circuit (10) for supplying power for aload (RL) after storing energy, amain switch (Ki) for providing input power for the energy Storage output circuit when being switched on, afree-wheeling switch (K2) for providing acontinuous current loop for the energy storage output circuit when the main switch is switchedoftadrive circuit (20) fordrivingthemain switch and thefree-wheeling switch tobe switched onin aswitchover manner according to apreset clock frequency, adetection circuit (30) and afeedback cir _03 ocuit(40), thedetection circuitbeing used fordetecting the voltage ona connection node (LX) ofthe main switch andthe free-wheel j~ing switch soas touse the energy storage output circuit to provide working voltage for the load while enabling the current of the continuous current loop not to flow reversely; and accordingly, the circuit works in afrequency modulation mode during light load, Thereby prolonging aswitch-on/switch-off period of the main switch and the free-wheeling switch. By means of reducing the times M of switch-on/switch-offofswitches, a switching loss isreduced,and theutilizationvrate ofca power supplyis improved. o(57) M|N [)q$9f] W O 20 17/004984 A 1|l IIII ll|VIIIlllII|||||||||||I|| I||| I|||||I|I|||||||||I|I||||||||||I| RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, $* k4 CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, - R tN V (T, j rA ( M21 (3)), TG)o ~49% t'+tMtAiE, 4M2ahtM (RL) It (10) , 9i (K2) , hIft 51+ Rt$7 iiftlht(20) AEtP$t(30) fHkt& T t(40) ,± INtlt Fi(LX)I , ieJtiS$,Jh#1 tFT, i +tJifJ. & ttftaffThi, (£16 tI% +1149& Thk9*J£, H~