8/17/2019 Analysis of Series-parallel Resonant Converter http://slidepdf.com/reader/full/analysis-of-series-parallel-resonant-converter 1/12 Analysis of Series-Parallel Resonant Conveer MARIAN K. KZIMERCZUK, Senir Member E NANDAKUMAR TRUAAYAN SHA WAG igh Se Unies A ryomain sadytae yss is given fo a i-al snt cnvrtr (SPRC t n nuo cotn m CCM) u Fu cnq tio o oma ats a divd edy-state ti t pd dsgn topol f t SPC cO t advnaous pop o h sis n co SRC a a on convete PRC T ky eu wok : a ve f e SPRC : ii o obaing high od ci 3 seveal uda uencs nd lmil cti suc cacv/uciv ad bday pnccit and oicu oa. pmn es �au o 8 W c ave t sonce dfen oad sisa npt tas xnt gmn otc o pedced y equi Mipt e Mrch 22, 9; i Augu 7 d Dc mbr 1, and ury 6, I Lg N TS9!78 s wrk was supp the Natnal Snc Foundatin ud CS 95 A' add: Dt f lcal ngnng, g Stt vty, Dan OH 443 01-1330 © 3 I. NTRODUCTON Resonant converers are very aracve n practice becau they hae high effcien, small se ight weight fat dynac repone low coponent sesses and low noe One of he relavely new reonan dc/dc converters s a seres-paralel resonan convere (SPRC [1-1] also called an LCC converer [1,4, 6, 10 1]. I compre a Cla D nerer 215] and one o he Cla D olage-drven reces as shown in Fig 1 la D inverer have he owe voltge esses acros he swtche among he reonan nveer whch make hem uale fo appcaons n offlne power suppe and permts the of lowvotage ealoxdeemconductor eldeffect tranor (MOST). wolage MOST have low onreitance, resuln n low conducon lose and yeldng hh efcen. Prevou publcatons 1] analyzed the converter n the tie doan The results of most analyes are obaied in the or of design curves and are not avaable a pe analycal expreon. lss D Inver s 0 Rti I D +V01- tiD2 41 V 2 Cf o2 (a ) (b) (c) �O Fg. Ss-pall nant d/d nr th aus Cl D ltgdrv rt (a) Wit hlfwa rtifr (b) th trasfmer centerapped eir () With bridge reier he objectve here are: 1) o ntrdue he halwae recter SPRC, 2) o derve analycal equaon for the SPRC operan he contuo 8 TRANSACTONS ON ROSPAC AND lCTROIC SYSTMS VO 29 NO. JANUARY 99