MLX80339 Code-Free PWM-Serial 3-phase BLDC Motor Control IC
The MLX80339 is a code-free 3-phase BLDC motor controller for sensorless fans and pumps up to 40W. Its pre-validated logic and intuitive interface enable rapid deployment without the need for software development.
Using the development kit MCM-81339, the connected motor can be automatically fingerprinted within a few minutes by the Start-to-Run webapp and fine-tuned afterwards via the PC-based Start-to-Run GUI. As a result, the generated hex-file can be implemented to the MLX80339 application.
Top features
- Code-free
- Control interface: PWM, UART, I2C
- Extended operating range
Product description
Universal Motor Control with the MLX80339 code-free
The MLX80339 is a code-free 3-phase BLDC motor controller 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.
Its pre-validated logic and intuitive interface enable rapid deployment without the need for software development.
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 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 MLX80339 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.
Speed up your development
Accelerate your development with the Code-free Start-to-Run tool. This ecosystem, paired with our Melexis Compact Master (MCM) and evaluation kit, allows you to configure and spin your motor in under 15 minutes.
By eliminating complex software development, the MLX80339 drastically
shortens prototyping cycles, moving you from initial setup to a fully
operational design at record speed.
Using the development kit MCM-81339, the connected motor can be automatically fingerprinted within a few minutes by the Start-to-Run webapp and fine-tuned afterwards via the PC-based Start-to-Run GUI.
As a result, the generated hex-file can be implemented to the MLX80339 application.
Features and benefits
- Code-free
- Control interface: PWM, UART, I2C
Extended operating range
- Supply voltage range from 5.5 V to 26 V
- Junction temperature from -40 °C to 150 °C
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
Motor control logic
- Sensorless FOC drive for BLDC fans/pumps
- Configurable motor parameter
Protections & Diagnostics
- Undervoltage, overvoltage, overcurrent
- Overtemperature detection & protection
Package RoHS compliant
- SO8-ep 6x5 mm2 (exposed pad)
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
Documents and tools
Datasheet(s)
Product flyer(s)
Selection guide(s)
Environmental
IC handling and assembly
If you have further questions please contact our team.
Melexis Homepage: Melexis MLX80339 Code-free PWM-Serial driver for BLDC motor (2 A) 
Melexis Homepage: Melexis Embedded motor driver ICs
Melexis Engineering Tool: Melexis StartToRun Webtool
Melexis Selection Tool: Melexis Embedded motor driver ICs
Melexis News: Melexis Enables Fast, Code-Free 3-Phase Fan Design with Intuitive Motor Driver
Melexis News (german): Melexis ermöglicht schnelles, codefreies Design von Dreiphasen-Lüftern mit den neuen intuitivem Motortreiber MLX80339
Melexis Tech-Talk: Melexis position sensors for motor control feedback loop
If you have further questions please contact our team.
MLX80339: Code-free characterizing and tuning of low-power fan applications tutorial
If you have further questions please contact our team.