NCP1030中文资料Integrated DC-DC Converter for PoE and Telecom数据手册ONSEMI规格书

描述 Description

The NCP1030 and NCP1031 are a family of miniature high-voltage monolithic dc-dc converters with on-chip power switch and start-up circuits. The NCP103x family incorporates in a single IC all the active power, control logic and protection circuitry required to implement, with minimal external components, several switching regulator applications, such as a secondary side bias supply or a low power dc-dc converter.This controller family is ideally suited for 48 V telecom, 42 V automotive, 12 V input and Power Over Ethernet (PoE) applications. The NCP103x can be configured in any single-ended topology such as forward or flyback. The NCP1030 is targeted for applications requiring up to 3 W, and the NCP1031 is targeted for applications requiring up to 6 W.The internal error amplifier allows the NCP103x family to be easily configured for secondary or primary side regulation operation in isolated and non-isolated configurations. The fixed frequency oscillator is optimized for operation up to 1 MHz and is capable of external frequency synchronization, providing additional design flexibility. In addition, the NCP103x incorporates individual line undervoltage and overvoltage detectors, cycle by cycle current limit and thermal shutdown to protect the controller under fault conditions. The preset current limit thresholds eliminate the need for external sensing components.

特性 Features

• On Chip High 200 V Power Switch Circuit and Startup Circuit
• No external circuitry needed for high voltage start up
• External Frequency Synchronization up to 1 MHz
• Optimization of switching frequency for size and efficiency
• Internal Startup Regulator with Auxiliary Winding Override
• Smaller PCB footprint
• Trimmed 2% Internal Reference
• Accurate output voltage
• Line Under/Over Voltage Lockout
• System level protection
• Internal Error Amplifier
• Smaller PCB footprint
• Primary or Secondary Regulation
• Flexibility in implementation
• Cycle by Cycle Current Limit
• Over Temperature Protection
• Excel Based Design Tool Available

应用 Application

• Stand Alone Low Power dc−dc Converter
• Low Power Bias Supply
• Low Power Boost Converter
• POE (Power Over Ethernet)/PD. Refer to Application Note AND8247.
• Secondary Side Bias Supply for Isolated dc-dc Converters

简介

NCP1030属于集成电路（IC）的ACDC转换器离线开关。由制造生产的NCP1030AC 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。