Product News: Electrical Equipment & Systems, Electronic Components & Devices

N-FET Pre-Driver IC suits automotive DC motor applications.

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Press Release Summary:

August 25, 2014 - Offered in 28-pin package with 4 digital inputs, Model MLX83100 can simultaneously drive four 500 nC-rated N-FETS at up to 28 V operating voltage with minimal self-heating. Device supports 45 V automotive load dump conditions and 100% pulse width modulated operation. Integrated bootstrap function and charge pump allow for support of supply voltages down to 4.5 V, ensuring continuous operation under automotive crank conditions. Operating from -40 to +150°C, IC is fully automotive qualified.

Melexis Inc.

41 Locke Rd., Concord, NH, 03301, USA

Original Press Release

Low Pin Count N-FET Pre-Driver Targets Automotive High Current DC Motor Applications

Press release date: August 19, 2014

Tessenderlo, Belgium,  - To complement its successful brushless direct current (BLDC) pre-driver portfolio and address conventional DC motor applications, Melexis introduces the MLX83100 N-FET pre-driver IC. Offered in a compact 28-pin package, with four digital inputs, this pre-driver IC provides a very flexible, inexpensive and space-saving solution for high current N-FET DC motors.

Though BLDC motors are now becoming increasingly commonplace, DC motors are still more cost effective in a broad spectrum of application areas, especially where the motor is not continuously running. In the automotive sphere this includes window lift and sunroof opening/closing mechanisms, as well as seat adjustment systems and HVAC blowers. In non-automotive applications DC motors are commonly found in automatic sliding doors, mobility scooters/wheel chairs, garage door openers, fork lifts, dental chairs and hospital beds.

The MLX83100 has the capability to simultaneously drive four 500nC-rated N-FETs at up to 28V operating voltage with minimal self-heating. The device supports 45V automotive load dump conditions. An integrated bootstrap function and charge pump allow for support of supply voltages down to 4.5V, ensuring continuous operation under automotive crank conditions. The device thereby supports 100% pulse width modulated (PWM) operation. Its built-in EEPROM memory provides end-of-line (EoL) configurability, so that the customer can configure the device to their specific system design requirements. The MLX83100 also comprises a current shunt amplifier, with a high gain bandwidth, delivering a fast settling time with high accuracy. This makes these pre-drivers highly suitable for precise torque control applications, like electrical power steering.

The MLX83100 is fully automotive qualified and has an operational temperature range spanning from -40°C to +150°C. Full diagnostics is provided via a single serial communication line, thereby distinguishing different error types. All output voltages are for example monitored for failure conditions. In addition, input battery under-voltage, over-voltage and over-temperature protection is incorporated.

In addition, to the new MLX83100, Melexis now also provides its highly established MLX83203 BLDC pre-driver IC in new packaging options of either a TQFP48 or a QFN32 with wettable flanks. Also the MLX83202 pre-driver, with reduced gate drive strength compared to the MLX83203 for lower EMC, is available in these new packaging options. For more information on the MLX83100, please go to: http://www.melexis.com/DC-Motor-Control-ICs/NFET-predrivers/Automotive-Full-Bridge-MOSFET-Pre-Driver-812.aspx

Contact Melexis

Marketing Communications
Peter Riendeau
Melexis Inc
15 Trafalgar Sq., Ste. 100
Nashua, NH 03063
USA
Tel: 603-204-2900
Fax: 603 578-1270
pre@melexis.com

Sales
Susan Brocious
Melexis Inc
15 Trafalgar Sq., Ste. 100
Nashua, NH 03063
USA
Tel: 603-204-2900
Fax: 603 578-1270
sbr@melexis.com

About Melexis
Melexis Microelectronic Integrated Systems N.V. (Euronext Brussels:MELE) imagines, creates and delivers innovative mixed signal integrated circuits. Melexis ICs are driving green solutions that enable our customers to bring more energy efficient automotive systems to market. Melexis product portfolio addresses 4 classes of ICs; Sensor, Optoelectronic, Wireless and Actuators. Sensors include magnetic, MEMS, and sensor interface ICs. Optoelectronic products encompass linear arrays, single point sensors, infrared thermometers and CMOS wide dynamic range and night vision cameras. Wireless ICs focus on RKE, TPMS, ISM band applications, NFC, RFID reader and smart tag solutions. Actuator ICs cover LIN and CAN bus networking ICs and advanced BLDC motor driver technology. Melexis is proud of its participation toward reducing the human race's global environmental footprint.

For more information visit www.melexis.com

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