描述 Description

The CoolSET?-Q1 series (ICE2QRxx80Z) is the first generation of quasi-resonant integarted power ICs. It is optimized for off-line switch mode power supply applications such as LCD monitor, DVD R/W, DVD Combo, Blue-ray DVD, set top box, etc. Operting the MOSFET switch in quasi-resonant mode, lower EMI, higher efficiency and lower voltage stress on secondary diodes are expected for the SMPS. Based on the BiCMOS technology, the CoolSET?-Q1 series has a wide operation range (up to 25 V) of IC power supply and lower power consumption. It also offers many advantages such as: a quasi-resonant operation till very low load increasing the average system efficiency compared to other conventional solutions; the Active Burst Mode operation enables ultra-low power consumption at standby mode with small and controllable output voltage ripple.

特性 Features

? 800 V avalanche rugged CoolMOS? with built-in startup cell
? Quasiresonant operation till very low load
? Active burst mode operation for low standby input power (< 100 mW)
? Digital frequency reduction with decreasing load for reduced switching loss
? Built-in digital soft-start
? Foldback point correction and cycle-by-cycle peak current limitation
? Maximum on/off time limitation
? Auto restart mode for VCC Overvoltage and Undervoltage protections
? Auto restart mode for overload protection
? Auto restart mode for overtemperature protection
? Latch-off mode for adjustable output overvoltage protection and transformer short-winding protection

優(yōu)勢(shì):
? Active Burst Mode to reach the lowest standby power requirement <100 mW @ no load
? Quasi resonant operation
? Digital frequency reduction for better overall system efficiency
? 800 V avalanche rugged CoolMOS? with startup cell
? Pb-free lead plating, halogen free mold compound, RoHS compliant

應(yīng)用 Application

? Adapter/Charger, Blue Ray/DVD player, Set-top Box, Digital Photo Frame
? Auxiliary power supply of Server, PC, Printer, TV, Home theater/Audio System, White Goods, etc

簡介

ICE2QR4780G屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由制造生產(chǎn)的ICE2QR4780GAC 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實(shí)現(xiàn)此用途，但也有許多專門用于此用途的庫存產(chǎn)品，請(qǐng)參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。