AN1246 ISL6752 ISL6753 10ZVS SEM600

2006 4 4 AN1246.0 ZVS Intersil ISL6752 ISL6753 50 ZVS ZVS 10 ZVS E E= 1 LRES I 2 2 EQ.1 LRES I

ZVS 2006 4 4 AN1246 AN1246.0 ZVS Intersil ISL6752 ISL6752 ISL6753 ISL6753 50 ZVS ZVS 10 ZVS E E= 1 LRES I 2 2 EQ.1 LRES I ZVS 1 T0 T1 ZVS T1 ZVS T1 MOSFET 1 ZVS T1 T1 MOSFET C OSS C OSS C AVG C AVG = 1 VB VB C OSS (V )dV EQ.2 0 V B ZVS MOSFET C AVG MOSFET / 2 4 MOSFET 400V 300ns 48V 100ns ZVS LC MOSFET MOSFET ZVS MOSFET ZVS ZVS ZVS EMI ZVS ZVS ZVS H H ZVS 2 I ZVS 2mil 0 2mil PFC MOSFET MOSFET MOSFET MOSFET MOSFET ZVS ZVS 2 MOSFET 1 MOSFET MOSFET 2 MOSFET MOSFET 1 5A ZVS 0A MOSFET ZVS 1 MOSFET 15W 2 MOSFET 2 MOSFET 3A ZVS 20W 1 MOSFET 25W 2 MOSFET ZVS ZVS 3 ZVS BH H B BH BH 4 B-H H B H B H B H H Hc H< H> 5 VS H H 6 6 lm Ae I H I I N 7 VS ISAT 7 0 8 tB dI L dt tB tB 12 lm Magnetics J W R 12 12 BH H -HC -HC HC Magnetics J W R Metglas® FT3 2714A Metglas / W J HC GaAs SiC PN BH BH PN PN f dv/dt N N 48V 9 ZVS ZVS 1 1 Q1 Q4 Q2 Q3 L1 L2 Q1 Q4 L1 L2 10 1 Q1 Q2Q3 Q4 L1 L2 Q1 Q2 0V 0V L2L2 L1 L1 11 Q2 Q1Q3 Q4 L1 L2 Q1 Q3 Q1 Q3 L1 L1 L2 ZVS L1 L1 L2 L2 L1 L2 L2 L2 L1 12 ZVS 2 2 Q2 Q3 Q1 Q4 L1 L2 Q2 Q3 ZVS ZVS L1 L2 13 3 14 ZVS T1 ZVS 15 N 1 15 LMLL LM 10ZVS 10ZVS MOSFET RC 16 CD LRC RC f 5V W Magnetics 40705 48V 4 F 17 17 17 A ZVS B MOSFET DS 0V C "" ZVS Magnetics W J F R Metglas® Hc 5V BH 21 48V W W J J W F R Metglas® 21 WJ R 150kHz Metglas® 200kHz 1 Magnetics F 250 W 125 lm Ae PCB "" 18 18 4 130 ZVS ZVS [1] Lloyd H Dixon Jr., "Eddy Current Losses in Transformer Windings and Circuit Wiring", SEM600 SEM600 Unitrode Seminar [2] Magnetics Inc. Ferrite Cores catalog, 1999 19 D5 C1 D4 R2 R3 C1 Q1 Q1 R1 D3 ZVS ZVS Permalloy 80Magnetics Metglas® 2714A 20 BH Hc Metglas® ZVS Im BH 21 BH IntersilISO9000 www.intersil.com/design/qualityIntersil IntersilIntersil/ Intersil Intersil Intersil Intersil www.intersil.com