IRS25411S [INFINEON]

High-Voltage Buck Control ICs for Constant LED Current Regulation;


型号：	IRS25411S
厂家：	Infineon
描述：	High-Voltage Buck Control ICs for Constant LED Current Regulation 驱动光电二极管接口集成电路
文件：	总2页 (文件大小：501K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LIGHTING

High-VoltageꢀBuckꢀControlꢀICsꢀforꢀ

ConstantꢀLEDꢀCurrentꢀRegulation

THE POWER MANAGEMENT LEADER

Features

LEDrivIR^™

•ꢀInternalꢀhighꢀvoltageꢀregulator

•ꢀHystereticꢀcurrentꢀcontrol

•ꢀHighꢀsideꢀcurrentꢀsensing

•ꢀPWMꢀdimmingꢀwithꢀanalogꢀorꢀPWM

ꢀ controlꢀinput

•ꢀFreeꢀrunningꢀfrequencyꢀwithꢀmaximum

ꢀ limitingꢀ(150kHz)

Beneﬁts

•ꢀLowꢀcomponentꢀcount

•ꢀOff-lineꢀoperation

•ꢀVeryꢀsimpleꢀdesign

•ꢀInherentꢀstability

•ꢀInherentꢀshortꢀcircuitꢀprotection

The IRS2980 is the latest addition to IR’s range of Buck controllers complementing

the existing IRS25401/11 series for non-isolated LED driver applications. The IRS2980

includes a high voltage regulator which enables the IRS2980 to be supplied directly

from the input voltage bus and differential high side current sensing enabling the

use of a single MOSFET and ultra-fast diode as well as maximum frequency limiting.

These improvements provide design simpliﬁcation and cost saving while being able

to operate up to 450V with adequate thermal relief. A PWM dimming interface is also

incorporated making the IRS2980 a versatile low cost LED driver solution.

Applications include LED bulb replacement, indoor and outdoor signage as well as

architectural, entertainment design and decorative lighting.

The IRS2980 and IRS25401/11 operate in continuous conduction mode using hysteretic

average current control.

ꢀForꢀmoreꢀinformationꢀinꢀNorthꢀAmericaꢀcallꢀꢀ+1ꢀ310ꢀ252ꢀ7105,ꢀinꢀEuropeꢀcallꢀ+49ꢀ6102ꢀ884ꢀ311,ꢀorꢀvisitꢀusꢀatꢀwww.irf.comꢀ

11349A_FS

High-Voltage Buck Control ICs for Constant LED Current Regulation

EMI Filter

Rectifier

IC and Switches

LEDs

Line

IRPLLED7ꢀDemoꢀBoard

LEDꢀCurrentꢀvsꢀInputꢀVoltageꢀ

390

380

370

360

350

340

330

320

310

LED Current (mA)

Input Voltage

Speciﬁcations

LEDrivIR^™

•ꢀInputꢀVoltageꢀ70Vꢀtoꢀ250Vꢀ(AC)

•ꢀOutputꢀVoltageꢀ0Vꢀtoꢀ50Vꢀ(DC)

•ꢀRegulatedꢀOutputꢀCurrent:ꢀ350mA

•ꢀPowerꢀFactorꢀ>ꢀ0.9

IRS2980

•ꢀLowꢀcomponentꢀcountꢀ

•ꢀDimmableꢀ0ꢀtoꢀ100%

•ꢀNon-isolatedꢀBuckꢀregulator

LoadꢀCurrent

Regulation

Startup

PartꢀNumber

Package

Voltage

Frequency

Current

IRS2980S

IRS25401S

IRS25411S

SO-8

450V

200V

600V

+/-5%

<250 µA

<500 µA

<150 kHz

<500 kHz

ꢀForꢀmoreꢀinformationꢀinꢀNorthꢀAmericaꢀcallꢀꢀ+1ꢀ310ꢀ252ꢀ7105,ꢀinꢀEuropeꢀcallꢀ+49ꢀ6102ꢀ884ꢀ311,ꢀorꢀvisitꢀusꢀatꢀwww.irf.comꢀ

11349A_FS

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