L6566BH

更新时间： 2024-02-02 19:21:49

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		控制器
页数	文件大小	规格书
51页	1264K
描述
Multimode controller for SMPS

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数据手册

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L6566BH 数据手册

L6566BH

Multimode controller for SMPS

Datasheet — production data

Features

■ Selectable multimode operation: fixed

frequency or quasi-resonant

■ On-board 840 V high voltage startup

■ Advanced light load management

■ Low quiescent current (< 3 mA)

■ Adaptive UVLO

SO16N

■ Line feedforward for constant power capability

■ -600/+800 mA totem pole gate driver with

vs. mains voltage

active pull-down during UVLO

■ Pulse-by-pulse OCP, shutdown on overload

■ SO16N package

(latched or auto-restart)

■ Transformer saturation detection

Applications

■ Programmable frequency modulation for EMI

■ Industrial SMPS

reduction

■ SMPS running off rectified 3-phase input line

■ Latched or auto-restart OVP

■ Brownout protection

Figure 1.

Block diagram

VREF

COMP

VFF

V^CC

6.4V

TIME

OUT

OVPL

OVP

SOFT-START

FAULT MNGT

OFF2

LOW CLAMP

& DISABLE

charge

7.7V

LINE VOLTAGE

FEEDFORWARD

Ref erence

voltages

Internal supply

I_HV

VOLTAGE

REGULATOR

LEB

V^CC

UVLO

1.5 V

ADAPTIVE UVLO

Vth

PWM

OCP

V^CC

14V

V^CC

UVLO_SHF

400 uA

FMOD

Hiccup-mode

OCP logic

5.7V

BURST-MODE

OCP2

OSC

OSCILLATOR

DRIVER

MODE SELECTION

TURN-ON LOGIC

MODE/SC

ZCD

TIME

OUT OVPL

ZERO CURRENT

DETECTOR

50 mV

100 mV

4.5V

OFF2

OVP

OVERVOLTAGE

PROTECTION

LATCH

DIS

IC_LATCH

AC_OK

AC_FAIL

UVLO

DISABLE

15 µA

0.450V

0.485V

3 V

April 2012

Doc ID 16610 Rev 2

1/51

This is information on a product in full production.

www.st.com

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