NCP81174N Series

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

Catalog

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

Part	Output Type	Clock Sync	Mounting Type	Package / Case	Function	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply (Vcc/Vdd)	Topology	Serial Interfaces	Synchronous Rectifier	Number of Outputs	Control Features	Output Configuration	Supplier Device Package	Output Phases	Frequency - Switching [Max]	Frequency - Switching [Min]
ON Semiconductor NCP81174NMNTXG	PWM Signal		Surface Mount	32-VFQFN Exposed Pad	Step-Down	100 °C	0 °C	5.5 V	Buck	PSI		4	Current Limit Enable Frequency Control Power Good	Positive	32-QFN (5x5)	4	1 MHz	200 kHz

Catalog

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

Key Features

• Output Voltage up to 2.0V with PWM VID Interface

• Support 1.8V VID interface

• Remote Differential Output Voltage Sense

• Thermally Compensated Current Monitoring

• Differential Current Sense For Each Phase

• Power Saving Interface (PSI)

• 200kHz ~ 1000kHz Switching Frequency

• PWMVID frequency up to 5MHz

• Over Current Protection

• Fast Transient Response

• Latched OVP and UVP Protections

Description

The NCP81174N 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.