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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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