The NCP101X series integrates a fixed?frequency current?mode controller and a 700 V MOSFET. Housed in a PDIP?7, PDIP?7 Gull Wing, or SOT?223 package, the NCP101X offers everything needed to build a rugged and low?cost power supply, including soft?start, frequency jittering, short?circuit protection, skip?cycle, a maximum peak current setpoint and a Dynamic Self?Supply (no need for an auxiliary winding).

Unlike other monolithic solutions, the NCP101X is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65 ? 100 ? 130 kHz). When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so?called skip?cycle mode and provides excellent efficiency at light loads. Because this occurs at typically 1/4 of the maximum peak value, no acoustic noise takes place. As a result, standby power is reduced to the minimum without acoustic noise generation.

Features

? Built?in 700 V MOSFET with Typical RDSon of 11Ω and 22Ω

? Large Creepage Distance Between High?Voltage Pins

? Current?Mode Fixed Frequency Operation: 65 kHz – 100 kHz ? 130 kHz

? Skip?Cycle Operation at Low Peak Currents Only: No Acoustic Noise!

? Dynamic Self?Supply, No Need for an Auxiliary Winding

? Internal 1.0 ms Soft?Start

? Latched Overvoltage Protection with Auxiliary Winding Operation

? Frequency Jittering for Better EMI Signature

? Auto?Recovery Internal Output Short?Circuit Protection

? Below 100 mW Standby Power if Auxiliary Winding is Used

? Internal Temperature Shutdown

? Direct Optocoupler Connection

? SPICE Models Available for TRANsient Analysis

? Pb?Free Packages are Available*

Typical Applications

? Low Power AC/DC Adapters for Chargers

? Auxiliary Power Supplies (USB, Appliances, TVs, etc.)

NCP1011屬于集成電路（IC） > AC DC 轉(zhuǎn)換器，離線(xiàn)開(kāi)關(guān)。安森美半導(dǎo)體公司制造生產(chǎn)的NCP1011AC DC 轉(zhuǎn)換器，離線(xiàn)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。