NCV81275A Series

8/7/6/5/4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface

Catalog

8/7/6/5/4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface

Part	Grade	Qualification	Mounting Type	Supplier Device Package	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Number of Outputs	Operating Temperature [Max]	Operating Temperature [Min]	Applications	Package / Case
ON Semiconductor NCV81275MNTXG	Automotive	AEC-Q100
ON Semiconductor NCV81275AMNTXG	Automotive	AEC-Q100	Surface Mount Wettable Flank	40-QFNW (5x5)	4.5 V	20 V	Programmable	8	105 °C	-40 °C	Controller Intel Processor	40-VFQFN Exposed Pad

Catalog

8/7/6/5/4/3/2/1 Phase Buck Controller with PWM_VID and I2C Interface

Key Features

• Integrated Protection Features

• Compact 40 Pin QFN Wettable Flank Package

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

• NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable

Description

The NCV81275A is a multiphase synchronous controller optimized for new generation computing and graphics processors. The device is capable of driving up to 8 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.