Controllers | NCV81277A

4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface

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Overview

The NCV81277A is a multiphase synchronous controller optimized for new generation computing and graphics processors. The device is capable of driving up to 4 phases and incorporates differential voltage
and phase current sensing, adaptive voltage positioning and PWM_VID interface to provide and accurately regulated power for computer or graphic controllers. The integrated power saving
interface (PSI) allows for the processors to set the controller in one of three modes, i.e. all phases on, dynamic phases shedding or fixed low phase count mode, to obtain high efficiency in light-load conditions. The dual edge PWM multiphase architecture ensures fast transient response and good dynamic current balance.

  • ADAS GPU and CPU Power

  • Automotive Applications

  • Integrated Protection Features
  • Compact 40 Pin QFN Wettable Flank Package
  • Operating Temperature Range: −40°C to +105°C
  • NCV Prefix for Automotive and Other ApplicationsRequiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAPCapable

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Reference Price

NCV81277AMNTXG

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Active

CAD Model

Pb

A

H

P

QFNW-40

484AK

1

260

REEL

5000

N

Step-Down

2/3/4

Current Mode

4.5

20

250 - 1200

$2.3061

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Reliability Data

Die Related Summary Data

Device: NCV81277AMNTXG

Equivalent to wafer fab process: ONC25

Product Technology

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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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