MP6522 5.4-35V, 3.2A H-Bridge Motor Driver QFN-24

MP6522 5.4-35V, 3.2A H-Bridge Motor Driver QFN-24

The MP6522 is an H-bridge motor driver that operates from a supply voltage of up to 35V and delivers a peak motor current of up to 3.2A.

Key Specifications

Features

• Wide 5.4V to 35V Input Voltage Range
• 3.2A Maximum Output Current
• Internal, Full, H-Bridge Driver
• Cycle-by-Cycle Current Regulation and Limiting
• Low On Resistance (HS: 300mΩ; LS: 300mΩ)
• Simple, Versatile Logic Interfaces
• 3.3V and 5V Compatible Logic Inputs
• Over-Current Protection (OCP)
• Over-Voltage Protection (OVP)
• Thermal Shutdown

Typical Application Circuit

Applications

• Solenoid Drivers

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