NCP81251 Datasheet, PDF (1/18 Pages) ON Semiconductor – Single-Phase Voltage Regulator

NCP81251
Single-Phase Voltage
Regulator with SVID
Interface for Computing
Applications
High Switching Frequency, High
Efficiency, Integrated Power MOSFETs
The NCP81251, a single−phase synchronous buck regulator,
integrates power MOSFETs to provide a high−efficiency and
compact−footprint power management solution for new generation
computing CPUs. The device is able to deliver up to 14 A TDC output
current on an adjustable output with SVID interface. Operating in high
switching frequency up to 1.2 MHz allows employing small size
inductors and capacitors while maintaining high efficiency due to
integrated solution with high performance power MOSFETs.
Current−mode RPM control with feedforward from both input power
supply and output voltage ensures stable operation over wide
operation condition. The NCP81251 is in a QFN48 6 x 6 mm package.
Features
• Meets Intel^® Server Specifications
• 5 V to 20 V Input Voltage Range
• 1.0 V/1.1 V Fixed Boot Voltage
• Adjustable Output Voltage with SVID Interface
• Integrated Gate Driver and Power MOSFETs
• Up to 14 A TDC Output Current
• 500 kHz ~ 1.2 MHz Switching Frequency
• Current−Mode RPM Control
• Programmable SVID Address and ICCMax
• Adaptive Voltage Positioning (AVP)
• Programmable DVID Feed−Forward to Support Fast DVID
• Feedforward Operation for Input Supply Voltage and Output Voltage
• Output Over−Voltage and Under−Voltage Protections
• External Current Limitation Programming with Inductor Current
Sense
• QFN48, 6 x 6 mm, 0.4 mm Pitch Package
• This is a Pb−Free Device
Typical Applications
• Server Applications
www.onsemi.com
MARKING
DIAGRAM
1 48
QFN48
CASE 485CJ
1
NCP81251
AWLYYWWG
NCP81251 = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
ORDERING INFORMATION
Device
Package Shipping^†
NCP81251MNTXG
QFN48 2500 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
1
September, 2015 − Rev. 1
Publication Order Number:
NCP81251/D