MP6632 6-50V, 1A Three-Phase BLDC Motor Driver QFN-32

MP6632 6-50V, 1A Three-Phase BLDC Motor Driver QFN-32

The MP6632 is a three-phase brushless DC (BLDC) motor driver controller with up to 1A of driving current.

Key Specifications

Features

• 6V to 50V Input Voltage (VIN) Range
• Up to 1A of Driving Current Capability
• Sinusoidal Drive
• Trapezoidal Drive
• Supports 0V to 3.3V DC Input or 50Hz to 100kHz Pulse-Width Modulation (PWM) Input
• Supports External Triple-Hall or Single-Hall Input
• Closed-Loop/Open-Loop Speed Control
• Direction/Brake Input
• Power-Save Mode
• Lock Protection

Typical Application Circuit

Applications

• General Three-Phase Brushless DC (BLDC) 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