MP6613 4.5-45V, 5A Simple H-Bridge Driver QFN-28

MP6613 4.5-45V, 5A Simple H-Bridge Driver QFN-28

The MP6613 is an H-bridge motor driver IC designed to drive stepper motors, brushed DC motors, and other loads.

Key Specifications

Features

• 4.5V to 45V Operating Input Voltage (VIN) Range
• 5A Maximum Output Current (IOUT_MAX)
• Single H-Bridge Driver
• Low 75mΩ On Resistance (RDS(ON)) per MOSFET
• Protection Functions Include: o Over-Current Protection (OCP) o Over-Voltage Protection (OVP) o Under-Voltage Protection (UVP) o Over-Temperature (OT) Shutdown o Fault Indication Output
• Available in QFN-28 (4mmx5mm) and TSSOP-28EP Packages

Typical Application Circuit

Applications

• Bipolar Stepper Motors
• Stage Lighting
• 3D Printers
• Laser Printers and Copiers
• Textile Machines

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