MP6614 5-35V, 2A H-Bridge DC Motor Driver SOIC

MP6614 5-35V, 2A H-Bridge DC Motor Driver SOIC

The MP6614 is an H-bridge motor driver designed to drive reversible motors.

Key Specifications

Features

• Wide 5V to 35V Operating Input Voltage (VIN) Range
• Internal Full H-Bridge Driver Supports 100% Duty Cycle
• 2A Continuous Output Current (IOUT)
• Low On Resistance (RDS(ON)) per MOSFET: o 280mΩ High-Side MOSFET (HS-FET) o 220mΩ Low-Side MOSFET (LS-FET)
• Simple, Versatile Logic Interfaces
• 3.3V and 5V Compatible Logic Supply
• Cycle-by-Cycle Current Regulation and Limiting
• Low Standby Circuit Current
• Over-Current Protection (OCP)
• 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