2013/05/16

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EM8564A

HV Start-up Green-mode PWM Convertor with Brown-Out Protection

General Description

EM8564A is a high performance, low cost, HV

Start-up, current mode PWM controller with green

mode power saving. The EM8564A integrates

functions of Soft Start (SS), Under Voltage Lockout

(UVLO), Leading Edge Blanking (LEB), internal Over

Temperature Protection (OTP), and internal slope

compensation. The EM8564A also features more

protection like Over Load Protection (OLP) and

Over Voltage Protection (OVP) to prevent circuit

damage occurred under abnormal conditions. The

EM8564A also has line under-voltage protection

(Brown-out Protection).

Ordering Information

Part Number

Package

Remark

EM8564AS7

DIP-7

Features

650V High Voltage Start up Circuit

Current Mode Control

Soft Start Function

Built-in Slope Compensation

Internal Leading-edge Blanking

Brown in/out Protection

Over Voltage Protection (OVP) on VCC pin

Over Load Protection (OLP)

Cycle-by-cycle Current Limit

Feedback Open Protection

Internal Over Temperature Protection (OTP)

Constant Output Power Limit (Full AC Input

Range)

Excellent EMI performance

Applications

LCD Monitor Power Supply

Open-Frame SMPS

Typical Application Circuit 1

AC

INPUT

EMI

Filter

EM8564A

D

VCC

COMP

GND

BNO

CS

D

Typical application

DC

OUTPUT