Controllers | NCP81143

VR Multi-Phase Controller

Obsolete

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Overview

The NCP81143 Multi-Phase buck solution is optimized for Intel VR12.5 compatible CPUs with user configurable 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. The NCP81143 offers two internal MOSFET drivers with a single external PWM signal. High performance operational error amplifiers are provided to simplify compensation of the system. Patented Dynamic Reference Injection further simplifies loop compensation by eliminating the need to compromise between closed-loop transient response and Dynamic VID performance. Patented Total Current Summing provides highly accurate digital current monitoring.

  • Industrial CPU based applications

  • Infotainment, Mobile, Automation, Medical and Security

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NCP81143MNTXG

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Obsolete

Similar Products
CAD Model

Pb

A

H

P

QFN-36

485CC

1

260

REEL

5000

N

Step-Down

1/2/3

Voltage Mode

4.75

5.25

1000

Price N/A

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Reliability Data

Die Related Summary Data

Device: NCP81143MNTXG

Equivalent to wafer fab process: ONC25

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Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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