MP2853
Dual-Loop, Digital, Multi-Phase Controller
with PMBusTM Interface for AMD SVI2
DESCRIPTION
The MP2853 is a dual-loop, digital, multi-phase
controller that provides power for the core of the
AMD SVI 2.0 platform. The MP2853 can work
with MPS Intelli-Phase products to complete the
multi-phase voltage regulator (VR) solution with
minimal external components. The MP2853 can
be configured with up to 4-phase operation for
Rail 1 and up to 2-phase operation for Rail 2.
The MP2853 provides an on-chip EEPROM to
store and restore device configurations. Device
configurations and fault parameters can be
programmed easily or monitored via the
PMBusTM/I2C interface. The MP2853 can
monitor and report output current through the
CS output from Intelli-Phase products.
The MP2853 is based on a unique, digital,
multi-phase, non-linear control to provide fast
transient response to the 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 very easy to configure.
The MP2853 is available in a QFN-40
(5mmx5mm) package.
FEATURES
Multi-Phase, Dual-Output, Digital Controller
AMD SVI 2.0 Compliant
Supports 3-Bit PVID Mode
PMBusTM/I2C Compliant (1MHz Bus Speed)
Pin Programmable for PMBusTM Address
Built-In EEPROM to Store Custom
Configurations
Switching Frequency Range from 200kHz to
3MHz
Digital Load-Line Regulation
Over-Clocking Mode by Adding Offset to
Output Voltage
Automatic Loop Compensation
Fewer External Components than a
Conventional Analog Controller
Best Transient Performance with Non-
Linear Digital Control
Flexible Phase Assignment for Dual Rails
Auto-Phase Shedding to Improve Overall
Efficiency
Phase-to-Phase Active Current Balancing
with Programmable Offsets for Thermal
Balance
Input and Output Voltage, Current, and
Power Monitoring
Regulator Temperature Monitoring
VIN UVLO, Output OVP/UVP,
OCP_TDC/OCP_SPIKE, OTP with No
Action, Latch, Retry, or Hiccup Options
Detection for Intelli-Phase MOSFET Fault
Type
Auto-Recording VR Fault Type to EEPROM
Available in an RoHS Compliant QFN-40
(5mmx5mm) Package
APPLICATIONS
AMD Fusion CPU/GPU Core Power
DDR
Telecom and Networking Systems
Base Stations
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 Assurance. “MPS” and “The Future of Analog IC Technology” are
registered trademarks of Monolithic Power Systems, Inc.
MP2853 Rev.1.0
www.MonolithicPower.com
1
11/6/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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