ICE2QS02G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

ICE2QS02G屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由英飛凌科技股份公司制造生產(chǎn)的ICE2QS02GAC DC 轉(zhuǎn)換器，離線開關(guān)該系列是元器件級控制產(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，請參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

Description

ICE2QS02G is a second generation quasi-resonant PWM controller optimized for off-line power supply applications such as LCD TV, audio and printers, where an auxiliary power supply for the IC is provided. The digital frequency reduction with decreasing load enables a quasi-resonant operation till very low load. As a result, the system efficiency is significantly improved compared

to a free running quasi resonant converter implemented with maximum switching frequency limitation only. In addition, numerous protection functions have been implemented in the IC to protect the system and customize the IC for the chosen application. All of these make the ICE2QS02G an outstanding product for real quasi-resonant flyback converter in the market.

Features

? Quasi-resonant operation

? Load dependent digital frequency reduction

? Built-in digital soft-start

? Cycle-by-cycle peak currentlimitation with built-in leading edge blanking time

? VCC undervoltage protection

? Mains undervoltage protection with adjustable hysteresis

? Foldback Point Correction with digitalized sensing and control circuits

? Over Load Protection with adjustable blanking time

? Adjustable restart time after Over Load Protection

? Adjustable output overvoltage protection with Latch mode

? Short-winding protection with Latch mode

? Maximum on time limitation

? Maximum switching period limitation