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

應(yīng)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

簡(jiǎn)介

NCP1031屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開(kāi)關(guān)式控制器。由制造生產(chǎn)的NCP1031DC-DC 開(kāi)關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開(kāi)關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。