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Shenzhen Mingjiada Electronics Co., Ltd. supplies and recycling NCV81277AMNTXG with PWM_VID and I2C interface multi-phase synchronous buck controller (onsemi).

Device description

The NCV81277A Automotive multiphase synchronous step-down controller is optimized for the next generation of computing and graphics processors. Capable of driving up to four phases, the NCV81277A integrates differential voltage/phase current detection, adaptive voltage positioning, and PWM_VID interfaces to provide precisely regulated power to a computer or graphics controller. The integrated Energy Saving Interface (PSI) allows the processor to set the controller in three modes (all phase on, dynamic phase switch, or fixed low phase count mode) to achieve high efficiency under light load conditions. The dual-edge PWM multiphase architecture ensures fast transient response and good dynamic current balance.

Features

Conforms to the NVIDIA® OVR4+ specification

Supports a maximum of four phases

Good power output

Undervoltage Protection (UVP)

Overvoltage Protection (OVP)

Overcurrent Protection (OCP)

Each phase overcurrent protection

Start pre-charged load while avoiding error OVP

Configurable Adaptive Voltage Positioning (AVP)

High performance operational error amplifier

True differential current balance detection amplifier per phase

Phase to phase dynamic current balance

Current mode double edge modulation for fast initial response to transient loads

Energy Saving Interface (PSI)

Users can set the threshold for automatic phase cutting

PWM_VID and I2C control interface

Compact 40-pin QFN wettable flanker package

Humidity Sensitivity Level (MSL) 1

Meets AEC-Q100 Level 2 standards

Lead-free, halogen-free, BFR free and RoHS compliant

Applications

• Automotive Applications

• GPU and CPU power

Contact: Mr. Chen

Tel: +8613410018555

Email: sales@hkmjd.com

Official website: www.hkmjd.com