MP6619 5.4-28V, 5A H-Bridge Motor Driver QFN-19

MP6619 5.4-28V, 5A H-Bridge Motor Driver QFN-19

The MP6619 is an H-bridge motor driver that operates from a supply voltage up to 28V and delivers a motor current up to 5A.

Key Specifications

Features

• Wide 5.4V to 28V Operating Input Range
• Up to 5A Peak Output Current
• Internal H-Bridge Driver
• Cycle-by-Cycle Current Limiting
• 65mΩ RDS(ON) for Each Half-Bridge MOSFET
• 100% Duty Cycle Operation of H-Bridge
• 1μA Shutdown Mode
• Output Short-Circuit Protection (SCP)
• Input Over-Voltage Protection (OVP)
• Under-Voltage Lockout (UVLO)

Typical Application Circuit

Applications

• DC Motors

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