NCP1589L中文资料同步降压控制器，低电压，带轻型负载能效和瞬变性能增强数据手册ONSEMI规格书

描述 Description

The NCP1589L is a low cost PWM controller designed to operate from a 5 V or 12 V supply. This device is capable of producing an output voltage as low as 0.8 V and converting voltage from as low as 2.5 V. It is easy to operate and provides an optimal level of integration to reduce size and cost of the power supply. It operates in Ramp Pulse Modulation mode for superior load step and release response. In addition to fast transient response, it also includes a 1.5 A gate driver design and light load efficiency features such as adaptive nonoverlap circuitry and diode emulation. It normally operates at a range of 200~500 kHz in continuous current conduction mode, which reduces with current at light load for further power saving. Protection features include programmable overcurrent protection, output overvoltage and undervoltage protection and input undervoltage lockout.

特性 Features

• VCC Range from 4.5 V to 13.2 VAdjustable Operating frequencyBoost Pin Operates to 35 VRamp Pulse Modulation ControlPrecision 0.8 V Internal ReferenceAdjustable Output VoltageInternal 1.5 A Gate DriversInput Under Voltage LockoutProgrammable Current LimitAdaptive Diode Mode Emulation in Light LoadThis is a PbFree Device

应用 Application

• Graphics CardsDesktop ComputersServers / NetworkingDSP & FPGA Power SupplyDCDC Regulator Modules

简介

NCP1589L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NCP1589LDC-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。