Low-Noise Single Coil Fan Driver IC has built-in current limiting.
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Press Release Summary:
Promoting energy efficient cooling system designs, 600 mA MLX90297 integrates Hall Effect sensor with 2 half bridge output stages. In addition to minimum speed setting, speed curve can be tuned via inclusion of one extra resistor. Soft start and soft switching mechanisms achieve optimal acoustic noise levels, as well as minimal vibration at higher speeds, without sacrificing max motor torque, and reduced driver resistance (RDSon) allows application to fans with coil resistances <10 Ω.
Original Press Release:
Low Noise Single Coil Fan Driver IC with Built-In Current Limiting Functionality
Tessenderlo, Belgium — Melexis announces the introduction of the MLX90297, a 600mA single coil fan driver IC. Aimed at development of energy efficient cooling system designs, this latest device adds to the company’s portfolio of All-in-One single coil fan drivers, and is a further development of the successful MLX90287 device. It integrates a high sensitivity Hall Effect sensor with two powerful half bridge output stages.
In addition to the minimum speed setting incorporated into the MLX90287, the speed curve of MLX90297 can also be tuned through inclusion of just one extra resistor. The soft start and soft switching mechanisms have been further refined to achieve industry-leading acoustic noise levels, as well as low vibration at higher speeds, without maximum motor torque being sacrificed. The reduced driver resistance (RDSon) of the MLX90297, in combination with the built-in current limiting, allows application of this fan driver to fans with coil resistances substantially lower than 10Ohm. The electro-static discharge (ESD) performance has been further enhanced to achieve 9kV HBM. The device is offered in a straight lead SOIC8 package. A DFN10 3mm x 3mm exposed pad package option is also available for very small fans and fans with motor currents up to 600mA.
”Our All-In-One MLX90287 in straight lead SOIC8 product has been received very warmly by the fan driver market. It lowers the total bill-of-materials cost and the complexity of the PCB design significantly by reducing the number of discrete components involved. Previously up to 22 resistors and transistors might have been needed for a TSSOP16 fan driver with an external hall sensor. Now just 2 resistors, and one decoupling capacitor are required for a SOIC8 fan driver solution,” explains Dirk Leman, product line manager for fan drivers at Melexis. “The MLX90297 is a natural evolution based on customer feedback. It offers a highly optimized solution for demanding high volume applications like VGA and CPU cooling, as well as white goods, and even low end server applications.“ With our world class expertise in Hall Effect sensing and motor control IC design, Melexis continues to strive to deliver better fan drivers at a lower cost, which is imperative in order to stay competitive in the fan driver market.“
Contact Melexis
Marketing
Liesbet Stalmans
Melexis Inc
Transportstraat 1
3980 Tessenderlo
Belgium
Tel: +32 13 670 795
Fax: +32 13 672 134
lst@melexis.com
Sales
Diane Thill
Melexis Inc
27333 Meadowbrook Road,
Suite 200 Novi MI 48377
USA
Tel: 248-306-5400
Fax: 248-662-2041
dth@melexis.com
About Melexis
Melexis Microelectronic Integrated Systems N.V. (Euronext Brussels:MELE) imagines, creates and delivers innovative mixed signal integrated circuits. We engineer the sustainable future with ICs that bring more energy efficient systems to market. Melexis portfolio Senses, Drives and Communicates. Sensors include magnetic, MEMs, and sensor interface ICs; optoelectronic single point and linear array sensors; infrared thermometers, CMOS wide dynamic range, Time of Flight and night vision cameras. Driver ICs cover Advanced DC & BLDC motor controllers and FET Pre-driver ICs. Communication ICs serve RKE, TPMS, ISM band applications, NFC, RFID reader and smart tag solutions. Melexis is proud to partner with our customers to engineer the sustainable future.
For more information visit www.melexis.com
Issued by:
Mike Green
Pinnacle Marketing Communications Ltd
Tel: +44 208 4296 543
E-mail: m.green@pinnaclemarcom.com
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