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The MLX90412 is a low-noise all-in-one single-coil fan and pump driver IC, with a peak driving capability of 2.2 A.

Operating from a supply in the range of 3.5 V to 32 V and robust up to 40 V, the MLX90412 is well suited for use in equipment on 12 V and 24 V power supplies, as well as portable applications with up to seven Li-ion cells (~29 V)

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Top features

  • All-in-one fan driver, including high-sensitivity Hall-effect sensor

  • Up to 2.2 A motor current

  • Adaptive commutuation for best in class efficiency over the full speed range for any fan design

  • Commutation options

    • Maximum torque

    • Very low acoustic noise

  • PWM control input

    • Standby mode

    • Open loop / closed loop speed control (+/-1%)

  • Protections and diagnostics

    • Locked Rotor Protection (LRP) (Programmable)

    • Temperature Shutdown (TSD)

    • Over Voltage protection (OVP) (Programmable)

    • Short circuit protection (OCP) 

    • Current limit (CL)

    • FG/RD open drain diagnostics output (Programmable)

  • Certifications

    • UL/VDE/CE ready

    • JEDEC qualified package

  • I2C programming

    • Fast prototyping

    • End-of-line programming

  • Package

    • Exposed pad DFN10 3x3 with wetable flanks

      • small (9mm2) footprint, for minimal PCB size

      • <1mm height

Discover all features
MLX90412 - 1-coil 35 W fan and pump driver - MLX90412

Product description

The MLX90412 is a low-noise all-in-one single-coil fan and pump driver IC, with a peak driving capability of 2.2 A.

Operating from a supply in the range of 3.5 V to 32 V and robust up to 40 V, the MLX90412 is well suited for use in equipment on 12 V and 24 V power supplies, as well as portable applications with up to seven Li-ion cells (~29 V)

The MLX90412-K is optimized for fans and pumps for home appliances and industrial applications.
Home appliance applications include drain pumps for washing/dryer machines and dishwashers, as well as toilet pumps; fans, blowers and cross blowers in air conditioning units, desk fans and pedestal fans; and Li-ion based applications including robot cleaners and robot lawn mowers.

Multiple motor commutation options can be accommodated to meet the need for high torque and low acoustic noise, as well as low vibration. A patented adaptive control algorithm ensures the highest efficiency is achieved with the lowest reverse current, over the full speed range and independent of the motor inductance or applied lead angle.

In combination with the low acoustic noise current shaping, the MLX90412 offers unprecedented noise performance in its price segment, making it a cost-effective alternative to the expensive 3-phase solution in many challenging applications. Furthermore, in pump applications, its closed loop option(s) can also be used as no-load or run-dry protection, to help avoid running pumps at excessive speeds, preventing high audible noise, and early failure.

The optional I2C interface for EE configuration, allows fast prototyping and end-of-line programming for customizing the MLX90412 for a wide range of applications.

 

Features and benefits

  • All-in-one fan driver, including high-sensitivity Hall-effect sensor

  • Up to 2.2 A motor current

  • Adaptive commutuation for best in class efficiency over the full speed range for any fan design

  • Commutation options

    • Maximum torque

    • Very low acoustic noise

  • PWM control input

    • Standby mode

    • Open loop / closed loop speed control (+/-1%)

  • Protections and diagnostics

    • Locked Rotor Protection (LRP) (Programmable)

    • Temperature Shutdown (TSD)

    • Over Voltage protection (OVP) (Programmable)

    • Short circuit protection (OCP) 

    • Current limit (CL)

    • FG/RD open drain diagnostics output (Programmable)

  • Certifications

    • UL/VDE/CE ready

    • JEDEC qualified package

  • I2C programming

    • Fast prototyping

    • End-of-line programming

  • Package

    • Exposed pad DFN10 3x3 with wetable flanks

      • small (9mm2) footprint, for minimal PCB size

      • <1mm height

Videos

All-in-one fan- and pump 1-coil BLDC driver - MLX90412

Product

Melexis proudly presents the MLX90412, a single-coil fan and pump driver IC with a peak driving capability of 2.2 A. The MLX90412 combines high performance with low-noise operation, making it ideal for a wide range of home appliances and industrial applications. Suitable for driving loads of up to 35 W, it complements the previously released MLX90411, adding a high power option to the range.

Inspired Engineering