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NCP5381 - 2/3/4 Phase Buck Controller

Description

Pin No.

9 10 VID0 VID7 VR10/VR11 11 SS 12 ROSC 13 ILIM 14 AGND 15 VS+ 16 VS-17 DIFFOUT 18 COMP 19 VFB 20 VDRP 21, 23, 25, 27 22, 24, 26, 28 29 30 33 34 35 36 37 CSxN CSx DRVON G1 G4 VREF DGND VCC VR_RDY 38 NTC 39 VR_FAN 40 VR_HOT 41 THPA

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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Datasheet preview – NCP5381

Datasheet Details

Part number NCP5381
Manufacturer ON Semiconductor
File Size 412.70 KB
Description 2/3/4 Phase Buck Controller
Datasheet download datasheet NCP5381 Datasheet
Additional preview pages of the NCP5381 datasheet.

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Full PDF Text Transcription

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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.
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