MP2965 Multi-Phase Controller QFN-48

MP2965 Multi-Phase Controller QFN-48

The MP2965 is a dual-loop, digital, multi-phase controller that provides power for the core of the Intel VR13.HC platform and AVSBus control CPU.

Key Specifications

Features

• Multi-Phase, Dual Output, Digital Controller
• Intel VR13.HC/IMVP9 Compliant
• PMBus/I2C and AVSBUS Compliant
• Switching Frequency up to 3MHz
• Pin Programmable for PMBus or Boot-Up Voltage
• Built-In EEPROM to Store Custom Configurations
• Automatic Loop Compensation
• Fewer External Components than a Conventional Analog Controller
• Overshoot Reduction with Non-Linear Control
• Flexible Phase Assignment for Dual Rails

Typical Application Circuit

Applications

• Server Core Voltage
• Graphic Card Core Regulators
• Telecom and Networking Systems

Design Notes

• Rail sequencing order and delay are part of the SoC power-up contract; a wrong order latches the processor even though every rail is in spec.
• In multiphase designs, current balance depends on the loop matching between phases, so keep the layout symmetric.
• Digital interfaces (PMBus, I²C) need pull-ups to the correct rail and a defined state during power-up.
• Thermal design is a system problem here: the PMIC sits next to the load it feeds, so budget the shared copper, not the package alone.

Common Questions