2.2A single-coil fan and pump driver
MLX90412-consumer
The MLX90412 is a low-noise all-in-one 1-coil fan/pump driver, with a 2.2 A drive capability, suited for air/water pumps, axial fans, radial/cross blowers. Discover the MLX90412-consumer and MLX90412-automotive
Top features
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All-in-one fan driver including a motor controller, hall sensor and 0.35 Ohm driver
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Peak motor current up to 2.2 A
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Integrated supply clamp: 20V and 40V versions
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Adaptive commutuation for best in class efficiency for any fan/blower design, over it's full speed operating range
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Commutation options
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Maximum torque
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Very low acoustic noise
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Low electromagnetic emissions
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PWM control input
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Standby mode
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Open-loop control with max duty cycle limitation setting
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Closed loop speed control +/- 1.5%
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PWM input for on-chip speed control
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Integrated pull-up or pull-down
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Option for inverted PWM input
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Transfer curve with flexible min. Point
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Extensive FG|RD output options
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Multiple FG ratios (programmable)
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RD alarm ‘high’ or ‘low’ (programmable)
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Protections and diagnostics
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Locked Rotor Protection (LRP) (Programmable)
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Temperature Shutdown (TSD)
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Over Voltage protection (OVP) (Programmable)
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Short circuit protection (OC)
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Current limit (CL)
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FG/RD open drain diagnostics output (Programmable)
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Maximum junction temperature of 150 °C, allowing very high operating temperature
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Certifications MLX90412K grade (consumer)
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UL/VDE/CE ready
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JEDEC qualified package
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I2C programming
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Fast prototyping
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End-of-line programming
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RoHS package DFN10
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small (3 x 3 mm2) footprint, for minimal PCB size
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< 1mm height
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2.2A single-coil fan and pump driver - MLX90412-consumer
Product description
The MLX90412 is a low-noise all-in-one 1-coil fan/pump driver, with a 2.2 A drive capability, suited for air/water pumps, axial fans, and radial/cross blower applications.
Operating on a voltage ranging from 3.5 V to 32 V, and robust up to 40 V, the MLX90412 is well suited for use in equipment on 5 V, 12 V and 24 V power supplies, as well as portable applications with up to eight Li-ion cells (~28.8 V).
The MLX90412-consumer (IT/Appliances/Industrial) is optimized for fans and pumps up to 35W such as cooling fans for demanding GPUs, drain pumps for washing/dryer machines and dishwashers, cross blowers in air conditioning units and ovens, desk fans and pedestal fans; and up to 45 W Li-ion-based applications, including robot cleaners and robot lawn mowers.
The MLX90412-automotive can be found here.
The MLX90412 features several commutation control options, optimized for either the lowest acoustic noise and vibration (sinewave) or the highest efficiency and torque (Flat or 1/16). The patented adaptive control algorithm ensures optimal operation with the lowest reverse current, over the full speed range independent of the motor inductance or applied lead angle.
Both open-loop and closed-loop speed control are possible, with a wide range of dynamic (PI) settings. Its closed-loop speed control can also be leveraged for no-load or run-dry protection in pump applications, avoiding excessive speeds that would otherwise cause high audible noise and early failure.
The optional I2C interface for EE configuration enables fast prototyping and end-of-line programming to customize the MLX90412 for a wide range of applications, including start-up configurations, electrical lead angle, max speed settings, wave shaping, etc.
In combination with the low acoustic noise current shaping, the MLX90412 offers unprecedented acoustic noise/vibration performance, making it a cost-effective alternative for applications which were previously considered exclusive to more expensive 3-phase solutions.
Features and benefits
-
All-in-one fan driver including a motor controller, hall sensor and 0.35 Ohm driver
-
Peak motor current up to 2.2 A
-
Integrated supply clamp: 20V and 40V versions
-
Adaptive commutuation for best in class efficiency for any fan/blower design, over it's full speed operating range
-
Commutation options
-
Maximum torque
-
Very low acoustic noise
-
Low electromagnetic emissions
-
-
PWM control input
-
Standby mode
-
Open-loop control with max duty cycle limitation setting
-
Closed loop speed control +/- 1.5%
-
PWM input for on-chip speed control
-
Integrated pull-up or pull-down
-
Option for inverted PWM input
-
Transfer curve with flexible min. Point
-
-
-
Extensive FG|RD output options
-
Multiple FG ratios (programmable)
-
RD alarm ‘high’ or ‘low’ (programmable)
-
-
Protections and diagnostics
-
Locked Rotor Protection (LRP) (Programmable)
-
Temperature Shutdown (TSD)
-
Over Voltage protection (OVP) (Programmable)
-
Short circuit protection (OC)
-
Current limit (CL)
-
FG/RD open drain diagnostics output (Programmable)
-
-
Maximum junction temperature of 150 °C, allowing very high operating temperature
-
Certifications MLX90412K grade (consumer)
-
UL/VDE/CE ready
-
JEDEC qualified package
-
-
I2C programming
-
Fast prototyping
-
End-of-line programming
-
-
RoHS package DFN10
-
small (3 x 3 mm2) footprint, for minimal PCB size
-
< 1mm height
-
Documents and tools
Product flyer(s)
Videos
All-in-one fan- and pump 1-coil BLDC driver - MLX90412
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.
