MP2891

MP2891

Dual-Loop, Digital, 16-Phase Controller with PWM-VID Interface for NVIDIA

Description

The MP2891 is a dual-rail, digital, multi-phase controller that provides power for NVIDIA PWMVID core power. The MP2891 can work with MPS’s Intelli-Phase^TM products to complete the multi-phase voltage regulator (VR) solution with minimal external components. The MP2891 can be configured for up to a maximum of 16 phases on rail 1, and a maximum of 8 phases on rail 2.

The MP2891 stores and restores device configurations. Device configurations and fault parameters can be easily configured or monitored. The MP2891 can monitor and report the output current (I_OUT) by sensing the current-sense output of Intelli-Phase^TM devices.

The MP2891 is based on a unique, digital, multi-phase, nonlinear control to provide a 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 simple to configure.

The MP2891 is available in a QFN-56 (7mmx7mm) package.

Features & Benefits

Up to 16-Phase, 2-Output, Digital Controller
PWM-VID Compatible with NVIDIA Open VReg Specification (OVR4i+)
Stores Configurations
200kHz to 3MHz Switching Frequency (f_SW)
Automatic Loop Compensation
Couple Inductor Mode
Supports Multi-Configuration for 6 Different Applications
Flexible Pulse-Width Modulation (PWM) Assignment for 2 Rails
Automatic Phase-Shedding (APS) to Improve Overall Efficiency
Phase-to-Phase Active Current Balancing with Configurable Offsets for Thermal Balance
Input Voltage (V_IN), Output Voltage (V_OUT), Current, and Power Monitoring
V_IN Under-Voltage Lockout (UVLO), Output Over-Voltage Protection (OVP) and Under-Voltage Protection (UVP), Over-Current Protection (OCP), and Over-Temperature Protection (OTP) with No Action, Latch-Off, or Hiccup Options
Intelli-Phase^TM Fault Diagnosis
Digital Load-Line Regulation
Overclocking Mode by Adding Offset to V_OUT
Available in a QFN-56 (7mmx7mm) Package