Products

Trade Shows

27.02. - 01.03.2018, Nuremberg
Hall 1, Booth 1-670

 

Contact:

Germany / General
André Huntrieser
✆: +49 (0) 2129 - 376-202
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Field Applications Engineer
Günter Fuchs
✆: +49 (0) 2129 376-200
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Tech Support
Raphael Balke
✆: +49 (0) 2129 376-200
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Austria / Switzerland
Karl Eder
✆: +43 (0) 7448 - 21643-11
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Motor Controller / Fan Driver

 

 

The BLDC motors bring a higher energy density, higher energy efficiency and a much longer life time compared to an equivalent DC motor.
Fuel pumps, main and auxiliary water coolant pumps, oil pumps, engine cooling fans and HVAC blowers require energy efficient electric motor driving, so that the classic DC motors will be more and more replaced by BLDC (Brush-less DC) motors.
In comparison to a DC motor, a BLDC motor has no mechanical brushes to do the motor commutation. Therefore an electronic control is always mandatory to provide the needed rotating magnetic field in the fixed stator coils. The electronics will also insure over current protection and the already described “on demand” function.
For the detection of the rotor position two fundamental principles exist:
Position sensors, often Hall sensor based, track the rotor position and provide this information to the electronic control circuit. In the domain of permanent running applications as blowers, pumps and compressors, so called sensor less principles can be applied. 
Melexis has combined under the name TruSense different sensor less algorithms, which start, accelerate and drive BLDC motors under unknown load conditions in a reliable way. 
Very fast start up times can be reached, a common request for fuel and oil pump applications.
A single IC connected to a LIN or PWM interface with only a few external components is able to control a BLDC motor of the mentioned applications in the range from 10W…1500W.
An other product family - mostly used as fan drivers - addresses 1 phase and 2 phase BLDC motors. In these ICs Hall effect sensors and coil drivers are combined in one single piece of silicon, allowing an application build with only a few external components.

 

Product

Function

Description

Benefits

Package

Datasheet

MLX81150

Motor controller 1-phase and 2-phase brushless DC

Embedded 16-bit-Flash controller with 32k Flash,
Supply Voltage from 5.5V to 18V
2 integrated relay drivers

4 programmable 16bit PWM modules for external transistor full bridge applications,
LIN-Interface with integrated LIN transceiver supporting

32 pin QFN 5x5
48 pin TQFP 7x7

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MLX90285

Driving two-coil brushless DC motors

FG/RD Voltage: max. 28V
Supply Voltage from 5V to 30V
Output Current:
350mA continuous

Low noise 24V two-coil fan driver with FG/RD output and with RPM closed loop,
On-chip solution with Hall-element and output drivers

SOIC-8 NB
4L TO-92

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MLX90287

Driving single-coil brushless DC motors

FG Output Voltage: max. 18V
Supply Voltage from 5V to 16V
Output Current:
550mA continuous

12V PWM single coil fan driver with configurable speed curve,
On-chip solution with Hall-element and output drivers

SOIC-8 NB
SOIC-8 NB Special

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US168

Driving single-coil brushless DC motors

Driver with integrated Frequency Generator (FG) output,
Supply Voltage from 1.8V to 6.5V
Output Current:
300mA continuous

Designed for 3.3V and 5V
Fan drivers,
On-chip solution with Hall-element and output driver,
Integrated tachometer signal protected output

6 pin UTQFN
1.5x2.0

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US62

Driving two-coil brushless DC

Driver with integrated Frequency Generator (FG) output
Supply Voltage from 3.2V to 18V
Output Current:
250mA continuous

Designed for 5V and 12V
Fan drivers,
On-chip solution with Hall-element and output driver,
Integrated tachometer signal protected output

4 pin TO-92

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US63

Driving two-coil brushless DC

Driver with integrated Rotation Detection (RD) output
Supply Voltage from 3.2V to 18V
Output Current:
250mA continuous

Designed for 5V and 12V
Fan drivers
On-chip solution with Hall-element and output driver
Integrated alarm signal
protected output

4 pin TO-92

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US79

Two-coil Smart Fan Motor Driver

Supply Voltage from 3.2V to 18V MOSFET drivers allow 400mA without overheating

Designed for 5V and 12V
Fan drivers,
Thanks to the No-VDD concept this 2-coil fan driver fits into a 3-pin package

3 pin SOT23 flat

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US890

Driving two-coil brushless DC

Driver with integrated Frequency Generator (FG) output
Supply Voltage from 2.6V to 18V
Output Current:
600mA continuous

Designed for 5V and 12V
Fan drivers,
On-chip solution with Hall-element and output driver
Integrated tachometer signal protected output

4 pin TO-92

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US891

Driving two-coil brushless DC

Driver with integrated Rotation Detection (RD) output
Supply Voltage from 2.6V to 18V
Output Current:
600mA continuous

Designed for 5V and 12V
Fan drivers,
On-chip solution with Hall-element and output driver
Integrated alarm signal
protected output

4 pin TO-92

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US90

Driving two-coil brushless DC

Driver with integrated Frequency Generator (FG) output
Supply Voltage from 4.7V to 30V
Output Current:
250mA continuous

Designed for 12V and 24V Fan drivers,
On-chip solution with Hall-element and output driver
Integrated tachometer signal protected output

Thin 4 pin
TO-92 flat

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US91

Driving two-coil brushless DC

Driver with integrated Rotation Detection (RD) output
Supply Voltage from 4.7V to 30V
Output Current:
250mA continuous

Designed for 12V and 24V Fan drivers,
On-chip solution with Hall-element and output driver
Integrated alarm signal
protected output

Thin 4 pin
TO-92 flat

Contact us