描述 Description

The NCP1032x is a miniature high-voltage monolithic switching converters with on-chip Power Switch and Startup Circuits. It 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 converter is ideally suited for 24V, 48V telecom and medical isolated power supplies applications. The NCP1032x can be configured in any single-ended topology such as forward or flyback converter. The NCP1032x is targeted for applications requiring up to 3W.

The internal error amplifier allows the NCP1032x 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 1MHz and is capable of external frequency synchronization, providing additional design flexibility. In addition, the NCP1032x incorporates undervoltage and overvoltage line detectors, programmable cycle-by-cycle current limit, internal soft start and thermal shutdown to protect the controller under fault conditions.

特性 Features

? On Chip High 200 V Power Switch Circuit and Startup Circuit
? No external circuitry needed for high voltage start up
? Internal Startup Regulator with Auxiliary Winding Override
? Smaller PCB footprint
? Programmable Oscillator Frequency, Operation up to 1 MHz
? Optimization of switching frequency for size and efficiency
? External Frequency Synchronization Capability
? Optimization of switching frequency for size and efficiency
? Frequency Fold-down Under FaultConditions
? System level protection
? Trimmed ± 1% Internal Reference
? Output voltage accuracy
? Programmable Cycle by Cycle Current Limit
? System level protection
? Line Under and Over Voltage Protection
? System level protection
? Over Temperature Protection
? System level protection
? Internal Soft Start
? Active Leading Edge Blanking Circuit

應(yīng)用 Application

? Stand Alone Low Power DC-DC Converter
? Secondary Side Bias Supply for Isolated DC-DC Converters
? Low Power Bias Supply
? Low Power Boost Converter
? Medical Isolated Power Supplies
? POE (Power Over Ethernet)/PD. Refer to Application Note AND8247.
? Bias Supply for Telecom Systems. Refer to Application Note AND8119/D.
? Microinverter for solar systems
? High voltage Power Supplies

簡介

NCP1032屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由制造生產(chǎn)的NCP1032穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會通過該元件。