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Analysis of Series-ParallelResonant Conveer

MARIAN K. KZIMERCZUK, Senir Member E

NANDAKUMAR TRUAAYAN

SHA WAGigh 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 Sttvty, Dan OH 443

01-1330 © 3

I. NTRODUCTON

Resonant converers are very aracve n practicebecau they hae high effcien, small se ightweight fat dynac repone low coponent sessesand low noe One of he relavely new reonandc/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 asshown in Fig 1 la D inverer have he owe voltge esses acros he swtche among he reonannveer whch make hem uale fo appcaonsn offlne power suppe and permts the  oflowvotage ealoxdeemconductor eldeffecttranor (MOST). wolage MOST havelow onreitance, resuln n low conducon loseand 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 peanalycal expreon.

lss D Inver s 0 RtiI

D

 

+V 01- tiD241 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 hehalwae recter SPRC, 2) o derve analycalequaon for the SPRC operan he contuo

8 TRANSACTONS ON ROSPAC AND lCTROIC S YSTMS VO 29 NO. JANUARY 99

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