NCP81174: Multi-Phase Synchronous Buck Controller with Power Saving Mode and PWM VID Interface

The NCP81174 is a general−purpose up to four−phase synchronous buck controller. It combines differential voltage sensing, differential phase current sensing, and PWM VID interface to provide accurate regulated power for the computer or graphic controllers. It can receive power saving command (PSI) from processors and operates in single−phase diode emulation mode to obtain high efficiency in light load. Dual−edge multiphase PWM modulation ensures a fast transient response with minimum possible capacitors.

Applications

GPU and CPU power
Power Management for Graphics cards

End Products

Desktop Computers
Notebook Computers

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
4/3/2-Phase Synchronous Buck Controller with Power Saving Mode and PWM VID Interface	NCP81174/D (148kB)	5	Mar, 2014

Package Drawings (1)

Document Title	Document ID/Size	Revision
QFN32, 5x5, 0.5P, 3.1x3.1EP	488AM (57.4kB)	A

Order Information

Product	Status	Compliance	Package		MSL*	Container		Budgetary Price/Unit
NCP81174MNTXG	Active	Pb-free Halide free	QFN-32	488AM	3	Tape and Reel	2500	$1.0333

Specifications

Product	Topology	Phases	Control Mode	VCC Min (V)	VCC Max (V)	fSW Typ (kHz)	tres Typ (ns)
NCP81174MNTXG

4/3/2-Phase Synchronous Buck Controller with Power Saving Mode and PWM VID Interface (148kB) NCP81174

QFN32, 5x5, 0.5P, 3.1x3.1EP NCN6804