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NCP5381 Datasheet 2/3/4 Phase Buck Controller

Manufacturer: onsemi

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Overview

NCP5381 2/3/4 Phase Buck Controller for VR10 and VR11 Pentium IV Processor Applications The NCP5381 is a two- , three- , or four- phase buck controller which combines differential voltage and current sensing, and adaptive voltage positioning to power Intel’s most demanding Pentium IV Processors and low voltage, high current power supplies.

Dual- edge pulse- width modulation (PWM) combined with inductor current sensing reduces system cost by providing the fastest initial response to transient loads thereby requiring less bulk and ceramic output capacitors to satisfy transient load- line requirements.

A high performance operational error amplifier is provided, which allows easy compensation of the system.

Key Features

  • Meets Intel’s VR 10.0, 10.1, 10.2, and 11.0 Specifications.
  • Dual- Edge PWM for Fastest Initial Response to Transient Loading.
  • High Performance Operational Error Amplifier.
  • Supports both VR11 and Legacy VR10 Soft- Start Modes.
  • Dynamic Reference Injection.
  • 8- Bit DAC per Intel’s VR11 Specifications.
  • DAC Range from 0.5 V to 1.6 V.
  • 0.5% System Voltage Accuracy.
  • Remote Temperature Sensing per VR11.
  • 2, 3, or 4- Phase Operation.
  • True Differential.

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