NCP81245数据手册集成电路（IC）的特殊用途稳压器规格书PDF

描述 Description

The NCP81245 is a 3 rail Multi-Phase buck solution is optimized for Intel IMVP8 compatible CPUs with user configurations of3/2/1 + 3/2/1 + 1 phases, including an option to do 4/3/2/1 + 2/1 + 1. The controller combines true differential voltage sensing, inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurate regulated power for Notebook applications. The multiphase-rails’ control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing providing the fastest initial response to dynamic load events at reduced system cost.

The single-phase controller can be used for SA or GTUS rails.It makes use of ON Semiconductor’s patented high performance RPM operation. RPM control maximizes transient response while allowing for smooth transitions between discontinuous frequency scaling operation and continuous mode full power operation.The single-phase rails have an ultra low offset current monitor amplifier with programmable offset compensation for ultra high accuracy current monitoring.

特性 Features

• Multiple Phase Count Configuration
• Flexible User Configurable option allows for a one part match all feature
• Compatible with Drmos or Discrete Driver
• Flexible option to use Drmos or Discrete solution for each phase
• Dynamic Reference Injection ®
• Supports all-MLCC Output Capacitance
• Accurate Total Current Summing Amplifier
• Auto Phase Shedding
• Switching Frequency 300kHz to 1.2MHz

应用 Application

• Embedded Systems

简介

NCP81245属于集成电路（IC）的特殊用途稳压器。由制造生产的NCP81245特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。