Multiple-Phase Controller with SVID Interface

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Overview

The NCP81140 Multi-Phase buck solution is optimized for Intel VR12.5 compatible CPUs with user configurations of 4/3/2/1 phases. The controller combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurately regulated power for both Desktop and Notebook applications. The 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. It has the capability to shed to single phase during light load operation and can auto frequency scale in light load conditions while maintaining excellent transient performance.

  • Industrial CPU based applications
  • Infotainment, Mobile, Automation, Medical and Security

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ECAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

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Phases

Control Mode

VCC Min (V)

VCC Max (V)

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NCP81140MNTXG

Active

Pb

A

H

P

QFN-32

1

260

REEL

4000

N

Step-Down

-

Voltage Mode

4.75

5.25

600

$1.1146

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