MPQ70331FS-AEC1 3A ASIL-D PMIC QFN-34

MPQ70331FS-AEC1 3A ASIL-D PMIC QFN-34

The MPQ70331FS is an ASIL-D compliant power management integrated circuit (PMIC) with advanced safety features for automotive applications.

Key Specifications

Features

• Built for Tough Automotive Transients o Load Dump Up to 45V o Cold Crank Down to 4.5V
• Optimize Board Size and BOM o 3A High-Voltage (HV) Buck Regulator o 2A Low-Voltage (LV) Buck Regulator o 250mA LV Boost Regulator FEATURES (continued)
• Optimized for EMC/EMI o Configurable Fixed Switching Frequency (fSW) from 0.38MHz to 2.5MHz o Frequency Spread Spectrum (FSS) for EMI Reduction o CISPR25 Class 5 Compliant

Typical Application Circuit

Applications

• Advanced Driver-Assistance Systems (ADAS)
• Ultra-Short Range to Long-Range Radar

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