Datasheet > NCV81277AMNTXG

NCV81277AMNTXG

更新时间： 2023-09-03 20:37:03

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
26页	365K
描述
4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface

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NCV81277AMNTXG 数据手册

4/3/2/1 Phase Buck

Controller with PWM_VID

and I²C Interface

NCV81277A

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.

www.onsemi.com

QFNW40

CASE 484AK

MARKING DIAGRAM

Features

• Compliant with NVIDIA OVR4+ Specifications

NCV

81277A

AWLYYWW

• Supports Up to 4 Phases

• 4.5 V to 20 V Supply Voltage Range

• 250 kHz to 1.2 MHz Switching Frequency (4 Phase)

• Power Good Output

NCV81277A = Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-Free Package

• Under Voltage Protection (UVP)

• Over Voltage Protection (OVP)

• Over Current Protection (OCP)

• Per Phase Over Current Protection

• Startup into Pre-Charged Loads while Avoiding False OVP

• Configurable Adaptive Voltage Positioning (AVP)

• High Performance Operational Error Amplifier

• True Differential Current Balancing Sense Amplifiers for Each Phase

• Phase-to-Phase Dynamic Current Balancing

PIN CONNECTIONS

COMP

REFIN

• Current Mode Dual Edge Modulation for Fast Initial Response to

VREF

VRMP

DIFF

Transient Loading

NCV81277A

FSW

LLTH/I2C_ADD

IOUT

• Power Saving Interface (PSI)

OCP

(TOP VIEW)

LPC1

• Automatic Phase Shedding with User Settable Thresholds

ILIM

LPC2

Tab: GROUND

CSCOMP

CSSUM

CSREF

PWM4/PHTH1

PWM3/PHTH2

PWM2/PHTH3

• PWM_VID and I C Control Interface

• Compact 40 Pin QFN Wettable Flank Package

• Operating Temperature Range: −40°C to +105°C

• AEC−Q100 Grade 2 Approved

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant

ORDERING INFORMATION

†

Device

Package

Shipping

Typical Applications

• GPU and CPU Power

• Automotive Applications

NCV81277AMNTXG QFNW40 5000/Tape & Reel

(Pb-Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

Publication Order Number:

March, 2021 − Rev. 4

NCV81277A/D

12 3 4 5 6 7...26

中文翻译

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