AN2393 datasheet(1/35 Pages) STMICROELECTRONICS

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AN2393 Datasheet(PDF) 1 Page - STMicroelectronics

Part #	AN2393

Description	Reference design: wide range 200W L6599-based

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 35 page

October 2007

Rev 5

1/35

AN2393

Application note

Reference design: wide range 200W L6599-based

HB LLC resonant converter for LCD TV & flat panels

Introduction

This note describes the performances of a 200 W reference board, with wide-range mains

operation and power-factor-correction (PFC). Its electrical specification is tailored to a

typical high-end application for LCD TV or monitor applications.

The main features of this design are the very low no-load input consumption (<0.5 W) and

the very high global efficiency, better than 87% at full load and nominal mains voltage (115 -

230 Vac).

The circuit consists of three main blocks; the first is a front-end PFC pre-regulator based on

the L6563 PFC controller. The second stage is a multi-resonant half-bridge converter whose

control is implemented through the STMicroelectronics L6599 resonant controller. A further

auxiliary flyback converter based on the VIPer12A-E off-line primary switcher completes the

architecture. This third block is mainly intended for microprocessor supply and display power

management operations.

Figure 1.

L6599 and L6563 200W evaluation board (EVAL6599-200W)

www.st.com

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