FSDH321集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)規(guī)格書PDF中文資料

FSDH321屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由安森美半導(dǎo)體公司制造生產(chǎn)的FSDH321AC DC 轉(zhuǎn)換器，離線開關(guān)該系列是元器件級(jí)控制產(chǎn)品，用于構(gòu)建將交流市電轉(zhuǎn)換為直流電（通常電壓大幅降低）的設(shè)備。集成和未集成系統(tǒng)主要開關(guān)元件的器件均包括在內(nèi)。由于高輸入輸出電壓比，以及此類系統(tǒng)中通常需要隔離，這些器件通常與外部變壓器配合使用。盡管通常使用定制變壓器來(lái)實(shí)現(xiàn)此用途，但也有許多專門用于此用途的庫(kù)存產(chǎn)品，請(qǐng)參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

Description

Each product in the FSDx321 (x for H, L) family consists of an

integrated Pulse Width Modulator (PWM) and SENSEFET, and is

specifically designed for high performance offline Switch Mode

Power Supplies (SMPS) with minimal external components. Both

devices are integrated high voltage power switching regulators which

combine an avalanche rugged SENSEFET? with a current mode

PWM control block. The integrated PWM controller features include:

a fixed oscillator with frequency modulation for reduced EMI, Under

Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB),

an optimized gate turn?on/turn?off driver, Thermal Shut Down (TSD)

protection, Abnormal Over Current Protection (AOCP) and

temperature compensated precision current sources for loop

compensation and fault protection circuitry. When compared to a

discrete MOSFET and controller or RCC switching converter

solution, the FSDx321 devices reduce total component count, design

size, weight while increasing efficiency, productivity and system

reliability. Both devices provide a basic platform that is well suited for

the design of cost?effective flyback converters

Features

? Internal Avalanche Rugged SENSEFET

? Consumes only 0.65 W at 240 VAC & 0.3 W Load with Advanced

Burst?Mode Operation

? Frequency Modulation for EMI Reduction

? Precision Fixed Operating Frequency

? Internal Start?up Circuit

? Pulse?by?Pulse Current Limiting

? Abnormal Over Current Protection (AOCP)

? Over Voltage Protection (OVP)

? Over Load Protection (OLP)

? Internal Thermal Shutdown Function (TSD)

? Auto?Restart Mode

? Under Voltage Lockout (UVLO)

? Low Operating Current (max. 3 mA)

? Adjustable Peak Current Limit

? Built?in Soft Start

Applications

? SMPS for STB, Low Cost DVD Player

? Auxiliary Power for PC

? Adapter & Charger