AN-1077 Просмотр технического описания (PDF) - International Rectifier

Номер в каталоге

Компоненты Описание

Список матч

AN-1077

PFC Converter Design with IR1150 One Cycle Control IC

International Rectifier 

Application Note AN-1077

power dissipation to an absolute minimum during a

standby mode, or to shut down the converter at the

discretion of the system designer. The sleep mode is

activated any time the OVP pin, (pin 4), is at a voltage

level lower than 0.62V (typ).

The gate drive output provides sufficient drive ca-

pability to efficiently drive MOS gated power switches

typical of the application.

Operating Temperature

Nominal DC Output Voltage

Maximum DC Output

Voltage

Minimum Output Holdup

Time

Converter Switching

Frequency

Maximum Soft Start time

385V

425VDC

30msec @ 285VO

100kHz

50msec

Converter Input and Output

Variables Defined

Figure 6 - IR1150S Pinout

POUT(MAX)

PFC CONVERTER DESIGN

PROCEDURE

This section describes a typical design procedure

for a Continuous Conduction Mode boost converter

for power factor correction using the IR1150S control

IC. Additionally, some of the design tradeoffs typical

of PFC converter design are discussed.

A schematic diagram is presented as a reference

to a step by step design procedure for designing a

typical 300W PFC converter.

An IR1150S Demo Board [2] is available from In-

ternational Rectifier which highlights the performance

of the IR1150 and was designed in accordance with

the design procedure presented in this application

note.

PIN(MAX)

ηMIN

IIN(RMS)MAX

IIN(PK)MAX

IIN(AVG)MAX

VIN(RMS)MIN

VIN(PK)MIN

Maximum converter output power

delivered to load

Maximum converter input power

drawn from AC source

Minimum worst case efficiency of

converter

Maximum rms value of input current

drawn from AC source

Maximum peak value of input cur-

rent drawn from AC source

Maximum average value of input

current drawn from AC source

Minimum rms value of input voltage

supplied by AC source

Minimum peak value of input volt-

age supplied by AC source

Converter Specifications

AC Input Voltage (rms)

85V(min) - 264V(max)

Input Line Frequency

47-63Hz

Target Efficiency

92% min @ 90VAC / 300W

Power Factor (PF)

0.99 min @ 115VAC / 300W

Harmonic Distortion

4% max @ 115VAC / 300W

AC Inrush Current (peak) 35A max @ 230VAC / 300W

Maximum Ambient

50°C

International Rectifier Technical Assistance Center:

USA ++1 310 252 7105 Europe ++44 (0)208 645 8015 4 of 18

Share Link: