MPQ6641-AEC1 Two-Channel Automotive Pre-Driver QFN-32

MPQ6641-AEC1 Two-Channel Automotive Pre-Driver QFN-32

The MPQ6641 is a gate driver IC designed for automotive DC motor driver applications.

Key Specifications

Features

• Integrated Low-Dropout (LDO) Regulator for Gate Drive
• Charge Pump for External N-Channel MOSFET Reverse Battery Protection
• Current-Sense Amplifier to Measure the Drop across the Low-Side MOSFETs (LS- FETs) or External Shunt Resistor
• Low-Power Sleep Mode
• Configurable Short-Circuit Protection (SCP)
• Adjustable Slew Rate Control
• Adjustable Dead-Time (DT) Control
• Over-Temperature (OT) Shutdown
• Under-Voltage (UV) Warning and Shutdown
• Open and Short Load Detection

Typical Application Circuit

Applications

• Automotive Actuators

Design Notes

• Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
• Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
• The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
• PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
• Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.

Common Questions