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MP2853

Dual-Loop, Digital, Multi-Phase Controller with PMBus^TM Interface for AMD SVI2

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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 PMBus^TM/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 & Benefits

Multi-Phase, Dual-Output, Digital Controller
AMD SVI 2.0 Compliant
Supports 3-Bit PVID Mode
PMBus^TM/I²C Compliant (1MHz Bus Speed)
Pin Programmable for PMBus^TM 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
V_IN 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