MP6653 5.5-32V Single-Phase BLDC Motor Driver TSOT23

MP6653 5.5-32V Single-Phase BLDC Motor Driver TSOT23

The MP6653 is a single-phase brushless DC (BLDC) motor driver with integrated power MOSFETs and an embedded Hall sensor.

Key Specifications

Features

• 5.5V to 32V Operating Input Voltage (VIN) Range
• On-Chip Hall Sensor
• Integrated MOSFETs: HS-FET + LS-FET = 960mΩ
• Soft Commutation
• Starting Duty Set with Hysteresis
• Selectable Open-Loop or Closed-Loop Speed Control
• Configurable Soft-Start Time
• Configurable Hall Lead/Lag Angle
• Supports 50Hz to 100kHz Pulse-Width Modulation (PWM) Input Frequency or DC Input
• Automatic Reverse Current Blocking

Typical Application Circuit

Applications

• Cooling Fans
• General Fans

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