1/13

AN1660

APPLICATION NOTE

September 2003

1

CIRCUIT DESCRIPTION

The simplified schematic and operating waveforms are shown in Fig.1 and Fig.2.

Figure 1. Simplified Schematic

cycle.

L-1

L.2Mag

DRIVER-H

+BUS

V@CRES

VOUT

Time

Time

Q1

DRIVER-L

Q2

D1

C1

C2

LOAD

D2

OUT

D03IN1425

by Helen Ding

ZVS RESONANT CONVERTER

FOR CONSUMER APPLICATION USING L6598 IC

In this paper we study the details of the Multi-resonant Zero-current-switching converter which has

smaller size and higher efficiency, and low noise operation. It will shown the design equations and

demoboard results of a high-end TV power supply using ST L6598.

The small size, high efficiency, and low noise operation makes the half bridge resonant topology

actrative for converters.

It will shown the design equations and demoboard test results of a high-end TV power supply us-

ing ST L6598.