The Future of Analog IC Technology
The MP2953B is a digital multi-phase controller
that provides power for the core of the INTEL
VR12.5 platform. It works with MPS’ Intelli-
Phase products to complete the multi-phase VR
solution with minimal external components. It
can be configured for 1 ~ 6 phase operation.
The MP2953B provides on-chip EEPROM to
store and restore device configurations. Device
configurations and fault parameters are easy to
program or monitor using the PMBus interface.
The MP2953B monitors and reports the output
current through CS output from Intelli-Phase
The MP2953B is based on a unique digital
multi-phase, non-linear control to provide fast
transient response to load transient with
minimal output capacitors. With only one power
loop control method for both steady state and
load transient, the power loop compensation is
Digital Multi-Phase Controller
with PMBus Interface for VR12.5
6-Phase Digital PWM Controller
Intel’s VR12.5 Compliant
Serial VID Interface for Programming and
Pin Programmable SVID registers
Built-In EEPROM to Store Custom
Automatic Loop Compensation
Less External Components than
Conventional Analog Controllers
Phase-Shedding at Light Load to Provide
Phase-to-Phase Active Current Balancing
Input and Output Voltage, Current, and
Regulator Temperature Monitoring
Open-Drain FAULT# Signal for Fault
with Options of No Action, Latch, Retry, or
Adjustable Load-Line Regulation
RoHS Compliant 5mmx5mm QFN-40
Server Core Voltage
Graphic Card Core Regulators
Telecom and Networking Systems
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MP2953B Rev. 1.01
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