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Monolithic Power Systems (MPS) MP6631B 3-Phase BLDC Motor Driver

Monolithic Power Systems (MPS) MP6631B 3-Phase Brushless DC (BLDC) Motor Driver supports a single external Hall-effect sensor or triple external Hall-effect sensors, with up to 3A peak phase current and 3.6V to 35V input voltage range. The device features a short soft start (SS) configuration for small-sized motors. Rich protection features include input over-voltage protection (OVP), under-voltage lockout (UVLO), locked-rotor protection, over-current protection (OCP), and thermal shutdown. The MP6631B is available in a QFN-26 (3mm x 4mm) package.

The MP6631B controls the motor speed through the pulse-width modulation (PWM) or the DC signal on the PWM/DC pin. It provides closed-loop and open-loop speed control and a built-in configurable speed curve function. It also features a sinusoidal drive for maximum torque and low-speed ripple/noise across the full speed range.

The Monolithic Power Systems (MPS) MP6631B features rotational speed detection. The rotational speed detector is an open-drain output via the FG/RD pin. It outputs a high or low voltage relative to the Hall comparator’s output. The motor direction is controlled via the DIR pin.

Features

  • 3.6V to 35V operating input voltage (VIN) range
  • Up to 3A of peak phase current
  • Integrated 160mΩ High-Side MOSFETs (HS-FETs) and Low-Side MOSFETs (LS-FETs)
  • Sinusoidal drive
  • Supports 0VDC to 1.2VDC input or 1kHz to 100kHz Pulse-Width Modulation (PWM) input
  • Supports triple-hall or single-hall element differential input
  • Closed- or open-loop speed control
  • Direction/brake input
  • Power-Save Mode (PSM)
  • 0.5s/4.5s lock protection
  • Over-Current Protection (OCP)
  • Single-pulse or triple-pulse FG output per electrical cycle
  • Rotational speed indication via the FG/RD pin
  • Soft Start (SS) for low noise and current overshoot
  • Available in a QFN-26 (3mm x 4mm) package

Applications

  • Fans
  • General three-phase Brushless DC (BLDC) motors
  • Pumps

Typical Applications

Application Circuit Diagram - Monolithic Power Systems (MPS) MP6631B 3-Phase BLDC Motor Driver

Development Tool

Monolithic Power Systems (MPS) EV6631B-L-00A Driver Evaluation Board

This board demonstrates the capabilities of the MP6631B, a 3-phase brushless DC (BLDC) motor driver.

Learn Moreà propos de Monolithic Power Systems (MPS) EV6631B-L-00A Driver Evaluation Board View Productslié à Monolithic Power Systems (MPS) EV6631B-L-00A Driver Evaluation Board
Publié le: 2025-04-18 | Mis à jour le: 2025-04-22