Onsemi NCP81174

Description

The NCP81174 is a general−purpose up to four−phase synchronousbuck controller. It combines differential voltage sensing, differentialphase current sensing, and PWM VID interface to provide accurateregulated power for the computer or graphic controllers. It canreceive power saving command (PSI) from processors and operates insingle−phase diode emulation mode to obtain high efficiency in lightload. Dual−edge multiphase PWM modulation ensures a fast transientresponse with minimum possible capacitors.

Features

• Output Voltage up to 2.0 V with PWM VID Interface
• Support 1.8 V and 3.3 V VID interface
• Remote Differential Output Voltage Sense
• Differential Current Sense For Each Phase
• 200 kHz − 1000 kHz Switching Frequency
• Power Saving Interface (PSI)
• Power Good Output
• Thermally Compensated Current Monitoring
• Over Current Protection
• Fast Transient Response
• 5 V VCC Shunt Regulator
• Latched OVP and UVP Protections
• QFN−32, 5 x 5 mm, 0.5 mm Pitch Package
• This is a Pb−Free Device

Typical applications

• Graphics Card Applications
• GPU and CPU Power
• Desktop and Notebook Applications

More information

• Datasheet