Patent AU-2016269448-A1 (AU)
Title: Power converter and switching power supply device
Inventor: ZUO SHIJUN
IPC: H02M3/156
Filed: 2016-01-28
Abstract: (12) tflIA*&PieSA IW (10) (43)E~# WO 2017/004984 A1 2017 *1 fl 12 H (12.01.2017) W IPO I PCT (51) 0$4*93 : F_, M #[[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$4f : PCT/CN2016/072478 (74) tAWA: ['' l-ft #m (22) 049$ 4F*F 2016 1 A28 H (28.01.2016) (CENFO INTELLECTUAL PROPERTY AGENCY); FP ~ ~ $ N F_ )[Mn f Xn f dJ 3838 F:'itY! (25) $jft : R 9 ML 5t%_n 210-212 ( F ) n* 2 [ i 1 t ), (26) '2 9c: Guangdong 518052 (CN)o 201510394324.2 2015 ) 7 A9 7 H (07.07.2015) CN JP): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, (71) i*A : r#[I![-RGB #4rIR- &Y-;N (SHEN- CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, Fl, GB, ZHEN SKYWORTH-RGB ELECTRONIC CO., LTD.) GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, [CN/CN]; t'#[[ j d JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, it Y A L 13-16 N, Guangdong 518057 (CN) oXV1[[ LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, (SHENZHEN SKY- NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, WORTH SEMICONDUCTOR DESIGN CENTER RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, CO.LTD) [CN/CN]; D T DESIGN dJCEN SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, rn-'*i't 15W B1503 r, Guangdong 518057 VC VN LA LMLWO = (CN)0 (84) I-t*(RtKLWtJiT$ h MfttPW t)): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, M(72) N A: 12t (ZUO, Shijun); FF1 1 Gngdong RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), rI[2 (AM, AZ, dJgvij A & 13-16 , Guangdong BY, KG, KZ, RU, TJ, TM), VXIYII (AL, AT, BE, BG, CH, 518057 (CN)o iWIA (CHEN, Lu); FF N CY, CZ, DE, DK, EE, ES, Fl, FR, GB, GR, HR, HU, IE, MMr ExR dJ I Y 1 itI )KF A fL 13-16 )W, Guang- IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, dong 518057 (CN) *Wft (TENG, Mouyan); FP N (54) Title: POWER CONVERTER AND POWER SUPPLY SWITCHING DEVICE - (5 4) U # t' 4kJ+t~ -/_20 .. T U 1 13 IRX Vo 40 ILoad-Info ' 12 I K2: C RL 23 Currentsamplngmo dle 30 Deteconcrcui 1 <(57) Abstract: A power converter and a power supply switching device. The power converter comprises an energy storage output circuit (10) for supplying power for a load (RL) after storing energy, a main switch (Ki) for providing input power for the energy C storage output circuit when being switched on, a free-wheeling switch (K2) for providing a continuous current loop for the energy storage output circuit when the main switch is switched off, a drive circuit (20) for driving the main switch and the free-wheeling switch to be switched on in a switchover manner according to a preset clock frequency, a detection circuit (30) and a feedback cir _03 ocuit (40), the detection circuit being used for detecting the voltage on a connection node (LX) of the main switch and the free-wheel j~ing switch so as to use 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 a frequency modulation mode during light load, O thereby prolonging a switch-on/switch-off period of the main switch and the free-wheeling switch. By means of reducing the times 4M of switch-on/switch-off of switches, a switching loss is reduced, and the utilization rate of a power supply is improved. o(57) Mld [)q$9f] W O 2 0 17/0 0 4 9 8 4 A 1|l II |IIll|||llIllllllII||||||||||||||||||||I|||I|I|I|||I||I|||I|I||||I|||||||||||I| RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, $* k4 CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, -R rNtVTrz(z8j 21 N(3)), TG)o ~49% t'+t AtE iti 4 4-)Mtht (RL) 10)t ( 109) (K2) , hI_+NH 5I+ i i(fJtlZ7) t9 (20) LAktPfi t2 (30) fHktM ftT(40) , 3ttfij t tj±# Iiti t (LX) T , iAJti$t,(Th#151 tFT, i/i+tJeflJ $d tFRtafA i'+4f, 4t I +9&*{114& ThkJJ#%,W~t