IR2157 Ver la hoja de datos (PDF) - International Rectifier

Número de pieza

componentes Descripción

Fabricante

IR2157

FULLY INTEGRATED BALLAST CONTROL IC

International Rectifier 

ADVANCED INFORMATION

IR2157

Lead Assignments & Definitions

Lead #

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Symbol

VDC

CPH

RPH

RT

RUN

CT

DT

SD

CS

LO

COM

VCC

N/C

VB

VS

HO

Description

DC bus sensing input

Preheat timing capacitor

Preheat frequency resistor & ignition capacitor

Oscillator timing resistor

Run frequency resistor

Oscillator timing capacitor

Deadtime programming

Shutdown input

Current sensing input

Low-side gate driver output

IC Power & signal ground

Logic & low-side gate driver supply

Unused

High-side gate driver floating supply

High voltage floating return

High-side gate driver output

Functional Block Diagram

VDC 1

CPH 2

RPH 3

RT 4

RUN 5

CT 6

DT 7

SD 8

16 HO

15 VS

14 VB

13 N/C

12 VCC

11 COM

10 LO

9 CS

3.0V

VDC 1

CPH 2

7.6V

5.1V

1.0uA

5.1V

RPH 3

RT 4

RUN 5

4.0V

IRT

2.0V

CT 6

ICT = I RT

DT 7

SD 8

2.0V

SQ

RQ

LEVEL

SHIFT

PULSE

FILTER &

LATCH

14 VB

16 HO

15 VS

SQ

TQ

4.0V

R1

RQ

2.0V

R2 Q

QS

QR

QD

CLK

QR

UNDER-

VOLTAGE

DETECT

7

OVER-

TEMP

DETECT

12 VCC

10 LO

15.6V

11 COM

0.2V

9 CS

1.0V

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