MP2884A

Digital, Multi-Phase PWM Controller with PMBus and PWM-VID

Datasheet

Description

The MP2884A is a digital, multi-phase, pulse-width modulation (PWM) controller with digital PWM-VID interface compatible with NVIDIA’s Open VReg specification. The MP2884A can work with MPS’s Intelli-Phase products to complete the multi-phase voltage regulator (VR) solution with minimal external components. The MP2884A can be configured with up to 4-phase operation.

The MP2884A provides an on-chip EEPROM to store and restore device configurations. Device configurations and fault parameters can be easily programmed or monitored via the PMBus/I²C interface. The MP2884A can monitor and report the output current through the CS output from the Intelli-Phase products.

The MP2884A is based on a unique, digital, multi-phase, non-linear control and provides 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 MP2884A is available in a QFN-40 (5mmx5mm) package.

Features & Benefits

Programmable Multi-Phase up to Four Phases
PWM-VID Interface Compatible with NVIDIA Open VReg Specification
PMBus/I²C Compliant (1MHz Bus Speed)
Pin Programmable for PMBus Address
Built-In EEPROM to Store Custom Configurations
Switching Frequency Range 200kHz to 5MHz
Automatic Loop Compensation
Fewer External Components than Conventional Analog Controller
Best Transient Performance with Non-Linear Digital Control
Flexible Phase Assignment
Auto-Phase Shedding to Improve Overall Efficiency
Phase-to-Phase Active Current Balancing with Programmable Offsets for Thermal Balance
Output Voltage/Current, Input Voltage/ Power Monitoring
Regulator Temperature Monitoring
VIN UVLO, Output OVP/UVP, OCP, OTP with No Action, Latch, Retry, or Hiccup Mode Options
Detecting for Intelli-Phase MOSFET Fault Type and Auto-Record to EEPROM
Register Map Password Lock
Digital Load-Line Regulation
Available in an RoHS Compliant QFN-40 (5mmx5mm) Package