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Melexis' First Triphibian™ Technology Revolutionizes MEMS Pressure Sensitive Devices

Views : 56
Update time : 2024-01-30 09:26:48
        Melexis, a global microelectronics engineering company, today announced the release of the MLX90830, the first pressure sensor chip to utilize its new patented Triphibian™ technology, a MEMS pressure sensitive element that offers unprecedented miniaturization to robustly measure pressures in gaseous and liquid media ranging from 2 to 70 bar. The device is factory calibrated by Melexis to measure absolute pressure and provide a proportional analog output signal.The MLX90830 simplifies the integration of the module into the latest electric vehicle (EV) thermal management systems, making the module more cost effective.
 
 
        The MLX90830 is based on Melexis' breakthrough Triphibian™ technology, which not only enables MEMS (Micro Electro Mechanical Systems) sensors to achieve accurate measurements well above 5 bar, but also liquid contact measurements, and is uniquely constructed to achieve an innovative breakthrough in high pressure sensing that is compatible with both gases and liquids. The sensor chip is packaged in a wide-body SO16 package and houses a cantilevered arm with a sensing membrane at its tip. 
        The cantilever design of the sensor chip provides pressure peak immunity up to 2000 bar/msec and static burst pressure levels up to 210 bar. The device is available by default in two pressure range calibration ranges (10 bar, 35 bar), each tailored to the needs of electric vehicle thermal management systems, including low and high pressure refrigeration circuits for refrigerants. The design of the MLX90830 is more robust than backside-exposed solutions, where there is still a pressure difference between the glass base side and the lead bonding side. In addition, the principle of pressure equalization also applies to refrigerated media, so the MLX90830 can be operated under such conditions, a first for a MEMS pressure-sensitive component. 
        Compared to existing non-MEMS designs, the MLX90830 is designed to be more accurate and robust, helping to optimize the efficiency of a vehicle's thermal management system and enabling longer driving distances. In addition, its compact embedded package reduces the size of the sensor chip compared to standalone sensor chip modules. 
        The MLX90830 contains the sensor, signal processing circuitry, digital hardware, voltage regulator and analog output driver chip. A piezoresistive element implanted in the sensor membrane creates a Wheatstone bridge that generates an output signal. This signal is amplified and converted to a digital signal, which is temperature compensated by 16-bit digital signal processing (DSP) and finally provides an analog voltage output through a digital-to-analog converter. 
        The sensor chip features advanced protection mechanisms against overvoltage (above +40V) and reverse voltage (below -40V), making it well suited for large vehicle applications.The MLX90830 is a stand-alone safety unit (SEooC) developed in accordance with the ISO26262 standard, and supports ASIL Level B system integration to ensure that it meets the latest EV safety requirements. 
        "Miniaturized MEMS pressure sensitive elements based on Triphibian™ technology and precisely factory calibrated by Melexis enable the centralization of EV thermal management systems, both reducing system size and increasing reliability." Karel Claesen, Product Manager for Pressure Sensor Chips, said, "Customers can design the MLX90830 into a standalone pressure sensor or easily embed it into a system." 
        "With Triphibian™ technology, the MEMS sensor chip is able to increase the measurable pressure levels and extend the applicable media types." Laurent Otte, Senior Product Line Manager, explains, "Melexis has cracked a problem that previously could not be solved by MEMS technology, and now we can open up new possibilities for applications in the automotive industry and beyond by determining the pressure of liquid media."
 
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