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NCP81142: VR Multi-Phase Controller

Datasheet: Multiple-Phase Controller with SVID Interface for Desktop and Notebook CPU Application
Rev. 3 (241kB)
Product Overview
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The NCP81142 Multi-Phase buck solution is optimized for Intel VR12.5 compatible CPUs with user configurable 4/3/2/1 phases. The controller combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward, and adaptive voltage positioning to provide accurately regulated power for both Desktop and Notebook applications. The control system is based on Dual-Edge pulse-width modulation (PWM) combined with DCR current sensing providing the fastest initial response to dynamic load events at reduced system cost. It has the capability to shed to single phase during light load operation and can auto frequency scale in light load conditions while maintaining excellent transient performance. High performance operational error amplifiers are provided to simplify compenstion of the system. Patented Dynamic Reference Injection further simplifies loop compensation by eliminating the need to compromise between closed-loop transient response and Dynamic VID performance. Patented Total Current Summing provides highly accurate digital current monitoring.
Applications   End Products
  • Industrial CPU based applications
 
  • Infotainment, Mobile, Automation, Medical and Security
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP81142MNTXG Active
Pb-free
Halide free
NCP81142, Industrail range VR controller QFN-32 485CD 1 260 Tape and Reel 4000 $1.0666
Market Leadtime (weeks) : 8 to 12

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Phases
Control Mode
VCC Min (V)
VCC Max (V)
fSW Typ (kHz)
Package Type
NCP81142MNTXG  
 $1.0666 
Pb
H
 Active   
Step-Down
Voltage Mode
4.75
5.25
590
QFN-32
Case Outlines
485CD   
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