Datasheet > C2472PX2-TR7

C2472PX2-TR7

更新时间： 2024-11-07 06:45:55

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
18页	466K
描述
RDFC Controllers for Offline Applications

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中文翻译

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数据手册

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C2472PX2-TR7 数据手册

C2472, C2473 and C2474 Datasheet

RDFC Controllers for Offline Applications

ADVANTAGES



Low system component count

High average efficiency

Low standby power consumption

EMI compliance without extra components

High isolation & surge voltage withstand

High power density in very small size

C2474PW1

PDIP-8

C2472PX2

SOT23-6

FEATURES

C2473PX1

SOP-8



Highly integrated CMOS controller IC

Low cost package options

Drive suitable for low cost bipolar power transistors

Resonant switching for high efficiency and low EMI

Frequency optimised for power circuit parasitics

Protection against overload, over-temperature and under-voltage

APPLICATIONS

External AC/DC charger/adaptor (single voltage input) e.g. cordless phones, portable electric tools.

Embedded PSU (single voltage input) e.g. set-top boxes, DVD players, audio products, domestic appliances.

OVERVIEW

The C2472, C2473 and C2474 controllers use CamSemi’s Resonant Discontinuous Forward Converter

(RDFC) topology to create a high efficiency, low cost alternative to line-frequency transformer PSUs. By

operating in resonant mode, EMI is greatly reduced, enabling the replacement of linear PSUs in demanding

applications such as audio products and cordless phone chargers. The C2472, C2473 and C2474 controllers

also offer overload protection which is usually associated with more expensive switch mode solutions.

AUX

VDD

Vdd

regulator

Base

drive

Switch

saturation

sensing

COL

Resonance

sensing

RDFC

Control

BAS

Current

sensing

GND

Figure 1: Block Diagram of the C2472, C2473 and C2474 Controller ICs

Product data

Page 1 of 18

DS-1423-0709C

26-Sep-2007

12 3 4 5 6 7...18

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