MPQ29125-AEC1 Multi-Phase Controller QFN-52

MPQ29125-AEC1 Multi-Phase Controller QFN-52

The MPQ29125 is a 3-rail, digital multi-phase controller that provides power for automotive applications with SVI3 AMD core power.

Key Specifications

Features

• Up to 8-Phase, 3-Rail, Digital Controller for AMD SVI3 VCORE Power
• I2C Communication Interface
• SVI3 Interface
• Supports SVI3 Type 2
• Built-In Non-Volatile Memory (NVM) to Store Configurations
• Switching Frequency (fSW) from 200kHz to 2MHz
• Automatic Loop Compensation
• Flexible Phase Assignment for 3 Rails
• Automatic Phase-Shedding (APS) to Improve Overall Efficiency
• Phase-to-Phase Active Current Balancing with Configurable Offsets for Thermal Balancing

Typical Application Circuit

Applications

• Automotive Systems-on-Chip (SoC) with AMD SVI3 VCORE Power

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