NCP1031数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

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
• Cycle by Cycle Current Limit
• System level protection
• Over Temperature Protection
• System level protection
• Internal Error Amplifier
• Smaller PCB footprint
• Primary or Secondary Regulation
• Flexibility in implementation
• 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

NCP1031属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的NCP1031DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。