STR-W6253D屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開(kāi)關(guān)。由三墾電氣株式會(huì)社制造生產(chǎn)的STR-W6253DAC DC 轉(zhuǎn)換器，離線開(kāi)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(kāi)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(lèi)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(zhuān)門(mén)用于此用途的庫(kù)存產(chǎn)品，請(qǐng)參見(jiàn)“開(kāi)關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

■ General Descriptions

The STR-W6200D series products are power ICs for switching power supplies, incorporating a power MOSFET and a current-mode type PWM controller IC. The low standby power is accomplished by the automatic switching between the PWM operation in normal operation and the burst-oscillation under light load condition. The product achieves high cost-performance power supply systems with fewexternal components.

■ Features

● Current-Mode Type PWM Control

● PWM with Jittering Function

The function reduces the EMI noise and enables simplified (low-cost) EMI filters.

The jittering period is adjustable by an external capacitor.

● Auto-Standby Function

The burst-oscillation enables the low standby power.

Input Power PIN < 100mW at no load

● Built-in Startup Circuit, enabling low power consumption

● Overcurrent Protection (OCP) with Built-in Input Compensation Circuit

The function has less AC input voltage dependency.

● Overload Protection (OLP) with Built-in Delay Timer ( the delay time is adjustable by an external capacitor)

● External Latch Protection (ELP)

The function enables the latch shutdown by external signal.

● Bias-Assist Function, reducing operating VCC voltage drop

The function improves the startup operation and makes a low VCC capacitor applicable.

● Leading Edge Blanking Function

● Slope Compensation Function

● Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET

● Various Protections

Overcurrent Protection (OCP)---------------------------------- Pulse-by-Pulse

Overload Protection (OLP) ------------------------------------- Auto-Restart

Overvoltage Protection (OVP) --------------------------------- Latch Shutdown

Thermal Shutdown Protection (TSD) ------------------------- Latch Shutdown

■ Applications

Switching Power Supplies for

Home Appliances (White Goods), Digital Consumer Equipment, OA Equipment, Industry Machines, Communication Devices, Others