Datasheet > RS2254PG

RS2254PG

更新时间： 2022-03-25 00:45:19

品牌	Logo	应用领域
ORISTER		/
页数	文件大小	规格书
9页	435K
描述
SecondâSide Regulation Current Mode PWM Power Switcher

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RS2254PG 数据手册

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RS2254

Second‐Side Regulation Current Mode PWM Power Switcher

General Description

RS2254 combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance,

low standby power, and cost effective off‐line flyback converter applications in sub 15W range.

RS2254 offers complete protection coverage with automatic self‐recovery feature including Cycle‐by‐Cycle current limiting (OCP), over

load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO). Excellent EMI performance is achieved with Orister

proprietary frequency Jiggling technique together with soft switching control at the totem pole gate drive output. The tone energy at

below 20KHz is minimized in the design and audio noise is eliminated during operation. RS2254 is offered in DIP‐8 package.

Features

Applications

●

Power on Soft Start Reducing MOSFET V_DSStress

Frequency Jiggling to reduce EMI

Burst Mode Control For Improved Efficiency and Minimum

Standby power Design

Audio Noise Free Operation

●

Battery Charger

Digital Cameras and camcorder Adaptor

PDA power supplies

VCR, SVR, STB, DVD & DVCD Player SMPS

Set‐Top Box (STB) Power

Auxiliary Power Supply for PC and Server

Open‐frame SMPS

●

Fixed 50KHz Switching Frequency

Internal Synchronized Slope Compensation

Low V_DDStartup Current and Low Operating Current

Leading Edge Blanking on Current Sense Input

Good Protection Coverage With Auto Self‐Recovery

◎

V_DDOver Voltage Clamp and Under Voltage Lockout

with Hysteresis (UVLO)

◎

Line Input Compensated Cycle‐by‐Cycle Over‐current

Threshold Setting For Constant Output Power Limiting

Over Universal Input Voltage Range

Overload Protection (OLP)

◎

Over Voltage Protection (OVP)

●

RoHS Compliant and 100% Lead (Pb)‐Free and Green (Halogen

Free with Commercial Standard)

Application Circuits

VOUT

AC IN

Naux

GND

VDDG

GND

DRAIN

VDD

SENSE DRAIN

RS2254

RS431

R10

DS‐RS2254‐11 May, 2010

www.Orister.com

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