ir1144spbf International Rectifier Corp., ir1144spbf Datasheet

ir1144spbf

Manufacturer Part Number

ir1144spbf

Description

Fixed 22.2khz Frequency, One Cycle Control Pfc Ic With Brown-out Protection

Manufacturer

International Rectifier Corp.

Datasheet

1.IR1144SPBF.pdf (1 pages)

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Features

Description

IR1144S Application Diagram

• PFC IC with IR proprietary “One Cycle Control”

• Continuous conduction mode boost type PFC

• Fixed 22.2kHz switching frequency

• Average current mode control

• Input line sensed brownout protection

• Output overvoltage protection

• Open loop protection

The IR1144S power factor correction IC, based on IR proprietary "One

Cycle Control" (OCC) technique, provides for high PF, low THD and

excellent DC Bus regulation while enabling drastic reduction in

component count, PCB area and design time as compared to traditional

solutions. The IC is designed to operate in continuous conduction mode

Boost PFC converters with average current mode control at a fixed

22.2kHz switching frequency.

sensed brown-out protection, dedicated pin for over voltage protection,

cycle by cycle peak current limit, open loop protection, VCC UVLO, soft-

start and micropower startup current of less than 150µA. In addition, for

standby power requirements, the IC can be driven into a micropower

sleep mode by pulling the OVP/EN pin low where the current

consumption is less than 150uA. IR1144S is available in SO-8 package.

ACIN2

ACIN1

The IR1144S features include input-line

PRELIMINARY

FIXED 22.2kHz FREQUENCY, ONE CYCLE CONTROL

IR1144

COM

COMP

ISNS

BOP

OVP/EN

GATE

VCC

VFB

• Cycle by cycle peak current limit

• VCC under voltage lockout

• Programmable soft start

• Micropower startup

• User initiated micropower “Sleep Mode”

• 750mA peak gate drive

• Latch immunity and ESD protection

PFC IC WITH BROWN-OUT PROTECTION

VCC

Package

IR1144SPBF

VOUT

RTN

Nov 3, 2010

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