MLX81339 Versatile 3-phase BLDC Motor Control IC
The MLX81339 is a versatile 3-phase BLDC motor control IC. It can drive small, sensorless fan & pump motors up to 40W. It is also suitable for precise positioning in automated valves, flaps, and small robotic motors.
Top features
- Control interface: PWM, Analog, UART, I2C, SPI
- Extended operating range
- Integrated motor bridge driver (< 40W)
Product description
Universal Motor Control with the MLX81339
The MLX81339 is a versatile 3-phase BLDC motor control IC designed for a wide range of applications across multiple industries. It efficiently drives small, sensorless 3-phase fan and pump motors up to 40W. It is ideal for devices such as server cooling fans and residential fans. It also serves as a robust BLDC or Bipolar Stepper motor control IC for precise positioning in automated valves, flaps, and small robotic motors.
The IC is compatible with both PWM and serial control interfaces, making it a flexible motor driver for currents < 2 A. The ability to communicate with an ECU via a digital I2C, UART, or SPI interface, as well as a legacy PWM/FG interface, provides flexibility for integration into existing and new systems.
Its minimal PCB design further enhances its suitability for various industrial applications with space constraints.
The MLX81339 supports a supply voltage range from 5.5V to 26V and features an integrated motor bridge driver. It includes extensive protection and diagnostic features, such as undervoltage, overvoltage, overcurrent, and overtemperature detection and protection. These features ensure reliable operation in demanding environments.
3-Phase Fan & Pump Motors
The IC is great for sensorless speed control, offering a quiet and efficient Field-Oriented-Control (FOC). It can handle motors from 1 m-RPM up to 100k m-RPM. It's used in:
- Residential fans: bldc ceiling fans, air purifiers, and humidifier fans.
- Automotive: small bldc fans, blowers, and 3-phase seat fans.
- Appliances: bldc washer and dishwasher pumps.
- Industrial: server cooling fans.
- Tools: bldc cordless garden and power tools.
Automated Positioning
The MLX81339 supports both sensorless and sensored control, ensuring accurate control for geared motors and a reliable startup. It's ideal for:
- Geared positioning motors.
- Thermal gas expansion and water cooling valves.
- Robotic hand motor drivers with position sensors.
- Automotive components like grille shutters and HVAC flaps.
Features and benefits
Control interface
- PWM, Analog, UART, I2C, SPI
Extended operating range
- Supply voltage range from 5.5 V to 26 V
- Junction temperature from -40 °C to 150 °C
- Automotive qualified
Integrated motor bridge driver (< 40W)
- 350 mOhm typical per phase (HS+LS+Shunt)
- programmable peak current limit up to 3 A
- up to 20W motors at 12V, 40W at 24V
Memories
- 32 KB Flash, 2 KB RAM
- 1 KB in Flash for IC and application configuration
- 10KB ROM for EOL programming (PPM/UART), IC startup
Periphery
- RC-clock 24, 28, 32 & 36 MHz
- 8x general-purpose IO’s, digital, analog, UART, SPI, I2C-master/slave
- 5x 16-bit motor PWM timer, 2x 16-bit timers, 1x 14-bit timer
- 13-bit ADC with < 2 µs update rate for differential current, 12-bit for voltage, temperature channels
- Differential Current sensing +/-4A
Protections & Diagnostics
- Undervoltage, overvoltage, overcurrent
- Overtemperature detection & protection
Package RoHS compliant
- QFN24 4x4 mm2
- SO8-ep 6x5 mm2
3-phase fan driver
Sensorless speed control
- from 1 m-RPM and up to 100k m-RPM motors
- silent & efficient FOC (Field-Oriented-Control)
- configurable FOC current & speed parameters
- overmodulation option for maximum speed and power
ECU communication options
- legacy PWM/FG interface for existing solutions
- digital I2C or UART interface for smarter control
Automated positioning
Sensorless or sensored position control
- supports accurate geared positioning motors
- reliable startup, runs from low to maximum speed
- silent & efficient FOC (Field-Oriented-Control)
- configurable current, speed, motor stop parameters
ECU communication options
- digital I2C, UART, SPI interface for smarter control
Documents and tools
Datasheet(s)
Product abstracts(s)
Selection guide(s)
Environmental
IC handling and assembly
Recommended third parties
If you have further questions please contact our team.
Homepage: Melexis MLX81339 Smart PWM-Serial driver for BLDC and Stepper motor (2 A)
Homepage: Melexis Embedded motor driver ICs
Selection Tool: Melexis Embedded motor driver ICs
News: Melexis drives simplicity with new motor drivers
News (german): Melexis setzt mit neuen Motortreibern auf mehr Einfachheit
Tech-Talk: Melexis position sensors for motor control feedback loop
If you have further questions please contact our team.