MP6616B 3.3-18V, 2A Single-Phase BLDC Motor Driver QFN-10

MP6616B 3.3-18V, 2A Single-Phase BLDC Motor Driver QFN-10

The MP6616B is a single-phase, brushless DC (BLDC) motor driver with integrated MOSFETs and an embedded Hall-effect sensor.

Key Specifications

Features

• High-Sensitivity, Embedded Hall-Effect Sensor
• 3.3V to 18V Operating Input Supply Voltage (VCC) Range
• 2A Continuous Output Current
• 100mΩ Integrated Power MOSFETs
• Configurable Speed (40000rpm Max)
• Configurable Minimum Speed and Starting Duty Cycle
• Selectable Closed-Loop or Open-Loop Speed Control
• High-Speed Accuracy in Closed-Loop Mode
• Configurable Soft Commutation Angle (45° Max)
• Configurable Hall Offset Angle (±45° Max)

Typical Application Circuit

Applications

• 1U and 2U Server Fans
• High-Current Cooling 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