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Monolithic Power Systems — MPQ6631H-AEC1 Brushless DC Motor Driver

 

Monolithic Power Systems MPQ6631H-AEC1 Three-Phase Brushless DC (BLDC) Motor Driver

Supporting a single external Hall sensor or three external Hall-effect sensors

Monolithic Power Systems features their MPQ6631H-AEC1, a three-phase, brushless DC (BLDC) motor driver with integrated power MOSFETs. The BLDC driver supports a single external Hall sensor or three external Hall-effect sensors to drive a three-phase BLDC motor, with up to 3A of peak phase current and an input voltage (VIN) range between 3.6V and 35V.

The MPQ6631H-AEC1 by MPS controls the motor speed through the pulse-width modulation (PWM) signal or the DC signal on the PWM/DC pin with closed-/open-loop control. The device features a built-in, configurable speed curve function. It also features a sinusoidal drive for maximum torque, as well as low speed ripple and noise across the full speed range.

Monolithic Power Systems’ MPQ6631H-AEC1 provides rotational speed detection. The rotational speed detector (the FG/RD pin) is an open-drain output. It outputs a high or low voltage relative to the Hall comparator’s output. Direction control is achieved via the DIR pin’s input.

Rich protection features include input overvoltage protection (OVP), under-voltage lockout (UVLO), locked-rotor protection, over-current protection (OCP), and thermal shutdown protection.

The MPQ6631H-AEC1 motor driver is available in a TQFN-26 (3mmx4mm) package with wettable flanks. It is available in AEC-Q100 Grade 1.

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 a 0V to 1.2V DC Input or 1kHz to 100kHz Pulse-Width Modulation (PWM) Input
  • Supports Triple-Hall or Single-Hall Inputs
  • Closed-/Open-Loop Speed Control
  • Direction/Brake Input
  • Power-Save Mode
  • 0.5s/4.5s Lock Protection
  • Over-Current Protection (OCP)
  • Single-Pulse or Triple-Pulse FG Output per Electrical Cycle
  • FG Signal: Rotational Speed Indication
  • Soft Start (SS) for Low Noise and Current Overshoot
  • Available in a TQFN-26 (3mmx4mm) Package with Wettable Flanks
  • Available in AEC-Q100 Grade 1

Applications

  • Fans
  • Automotive Fans
  • General Three-Phase Brushless DC (BLDC)
  • Motors
  • Pumps

 

Triple Hall-Effect Sensor Application

 

Single Hall-Effect Sensor Application

 

 

 

Monolithic Power Systems — MPQ6631H-AEC1 BLDC Motor Driver

 

Evaluation Board

The Monolithic Power Systems EVQ6631H-L-00A is an evaluation board designed to demonstrate the capabilities of the MPQ6631H-AEC1, a 3-phase brushless DC (BLDC) motor driver with integrated power MOSFETs. The MPQ6631H-AEC1 drives a 3-phase BLDC motor with one external Hall sensor or three external Hall sensors. The peak phase current reaches up to 3A across the 3.6V to 35V input voltage (VIN) range.

Datasheet
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