NCP81111 Datasheet, PDF (1/28 Pages) ON Semiconductor – High Speed Digital Controller

NCP81111
3 Phase VR12.5­6 High
Speed Digital Controller
with SVID and I²C
Interfaces for 5 MHz
Desktop, Notebook CPU
Applications
The NCP81111 is a high performance digital single output three
phase VR12.5−6 compatible buck solution optimized to operate at
frequencies up to 5 MHz for Intel CPU applications. The NCP81111
and can also work as a general purpose I²C controlled multiphase
voltage regulator. The NCP81111 is designed to support the
NCP81163 digital phase doubler IC which expands the capability of
the part to 6 phases for high current handling. The controller includes
true differential voltage sensing, differential current sensing, digital
input voltage feed−forward, DAC feed forward, and adaptive voltage
positioning. These features combine to provide an accurately
regulated dynamic voltage system. The control system makes use of
digital constant on time modulation and is combined with an analog
and digital current sensing system. This system provides the fastest
initial response to dynamic load events to reduced system cost. On
board user programmable memory is included for configuring the
controller’s parameters. User programmable voltage and droop
compensation is internally integrated to minimize the total board
space used. The NCP81111 is optimized for use with DRMOS.
Features
• Meets Intel®’s VR12.5 Specifications
• On Board EEPROM for User Configuration
• High Performance Digital Architecture
• Dynamic Reference Injection
• Fully Differential Voltage Current Sense Amplifiers
• “Lossless” DCR Current Sensing for Current Balancing
• Thermally Compensated Inductor Current Sensing for Droop
• User Adjustable Internal Compensation
• Switching Frequency Range of 250 kHz − 5.0 MHz
• Input Voltage Feed−forward
• Startup into Pre−Charged Loads
• Power Saving Phase Shedding
• Supports Lower Power Operation in PS3
• This is a Pb−Free Device
Applications
• Desktop, Notebook Processors, and General Purpose I²C Controlled
Multiphase Regulators.
www.onsemi.com
MARKING
DIAGRAM
1 32
QFN32
CASE 485CE
1
NCP81111
zzRr
AWLYYWWG
G
NCP81111 = Specific Device Code
zz
= Configuration Option
Rr
= Revision Number
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device*
Package Shipping†
NCP81111MNDFTXG QFN32 2500 / Tape &
(Pb−Free)
Reel
NCP81111MNzzTXG QFN32 2500 / Tape &
(Pb−Free)
Reel
*zz = Configurable Option, please contact Sales for
additional information.
†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
November, 2015 − Rev. 4
Publication Order Number:
NCP81111/D