IRS2548D datasheet(1/22 Pages) IRF

Part #	IRS2548D

Description	SMPS/LED DRIVER PFC HALF-BRIDGE CONTROL IC

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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September 29, 2011

IRS2548D

SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC

Features

• PFC, system control and half-bridge driver in

one IC

• Critical-conduction mode boost-type PFC

• Programmable PFC over-current protection

• Half Bridge Driver

• Half Bridge Over Current Protection

• Variable Frequency Oscillator

• Fixed internal 1.6us HO and LO deadtime

• Internal bootstrap MOSFET

• Internal 15.6V zener clamp diode on Vcc

• Micropower startup (250µA)

• Latch immunity and ESD protection

Typical Applications

• Isolated LED Drivers

• Power Supplies

Product Summary

Topology

Half Bridge

VOFFSET

600V

VOUT

VCC

Io+ & I o- (typical)

500mA/500mA

tON & tOFF (typical)

120nS/50nS

Deadtime (typical)

1.6uS

Package

14-Lead SOIC

Typical Connection Diagram

RVBUS1

RLO

+

RVBUS2

C1

L

N

RV1

F1

CVS

DCP2

DCP 1

CCO MP

COC

ROC

MPFC

CVBUS2

CVBUS1

RPFC

RZX

CVBUS

RVBUS

RFMIN

RVCC

CCS

R

CS

RF1

RLM1

RLM2

RHO

MHS

MLS

CBS

CVCC1

CVCC

+

BR1

C2

L1

CY

GND

DPFC

LPFC

RFMAX

CRES

DOUT1

DOUT2

COUT

RPU

R

CL

CVS

Reg

+5V

LED+

LED-

RD1

RD2

RD3

RV1

RV2

CF1

CF2

2

ENN

1

2

3

VBUS

4

5

7

FMIN

6

7

8

13

12

11

10

9

14

OC

COMP

ZX

PFC

HO

VS

VB

VCC

COM

LO

CS

ROC

DO1

DO2

U1

U2A

U2B

U3

RF2

RMAX

CMAX

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