MPQ2946 Digital QFN-48

MPQ2946 Digital QFN-48

The MPQ2946 is a digital, three-rail, multi-phase controller for autonomous driving applications.

Key Specifications

Features

• 3-Rail, Up to 8-Phase Digital Pulse-Width Modulation (PWM) Controller
• Digital Interface for Configuring and Monitoring
• Built-In Multiple-Time Programmable (MTP) Memory to Store Custom Configurations
• Automatic Loop Compensation
• Automatic Phase-Shedding (APS) with and without Discontinuous Conduction Mode (DCM) to Improve Overall Efficiency
• Phase-to-Phase Active Current Balancing
• Input Voltage (VIN) and Output Voltage (VOUT) Monitoring
• Output Current (IOUT) Monitoring
• Regulator Temperature Monitoring
• Under-Voltage Lockout (UVLO), Over- Voltage Protection (OVP), Under-Voltage Protection (UVP), Over-Current Protection (OCP), and Over-Temperature Protection (OTP)

Typical Application Circuit

Applications

• Autonomous Driving Systems-on-Chip (SoCs)

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