NCP1012中文资料用于离线 SMPS 的高电压开关稳压器数据手册ONSEMI规格书

描述 Description

The NCP101X series integrates a fixed-frequency current-mode controller and a 700 V voltage MOSFET. Housed in a PDIP7 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.

特性 Features

• Built-in 700V MOSFET with Typical RdsON of 11 or 22 Ohms
• Large Creepage Distance between High-Voltage Pins
• Current- Mode Fixed Frequency Operation: 65kHz - 100kHz - 130kHz
• Skip-Cycle Operation at Low Peak Currents Only: No Acoustic Noise!
• Dynamic Self-Supply, No Need of an Auxiliary Winding
• Internal 1ms Soft-Start
• Auto-Recovery Internal Output Short-Circuit Protection
• Latched Overvoltage Protection with Auxiliary Winding Operation
• Frequency Jittering for better EMI Signature
• Below 100 mW Standby Power if Auxiliary Winding is Used
• Internal Temperature Shutdown
• Direct Optocoupler Connection
• SPICE Models Available for Transient AC analysis
• Pb-Free Packages are Available

应用 Application

• Auxiliary Power Supplies
• Low Power AC/DC Adapter for Chargers

简介

NCP1012属于集成电路（IC）的ACDC转换器离线开关。由制造生产的NCP1012AC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。