Freescale unveils highly integrated TPMS device

Posted on Feb 6, 2014

Freescale Semiconductor has unveiled at the Freescale Technology Forum in Tokyo what it says is the industry`s first tire pressure monitoring system (TPMS) containing a capacitive pressure sensor for ultra-low-power consumption and precise sensing. `By using capacitive sensor technology, in addition to the small size, we get low power consumption,

Freescale unveils highly integrated TPMS device
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and we can now provide a two-axis accelerometer with self-testing, which is unique, " said Mark Shaw, senior member technical staff at Freescale. Designed for automobiles and medium- to heavy-duty trucks, the MPXY8300 system-in-package device provides a highly integrated and low-cost system that combines a pressure sensor, an 8-bit microcontroller (MCU), 2-axis accelerometer and radio frequency (RF) transmitter in a 20-pin SOIC wide body package. (See diagram. ) A key driver behind its development is the National Highway Traffic Safety Administration`s (NHTSA) regulations that require all new vehicles weighing up to 10, 000 pounds to include TPMS technology by the model year 2008. Similar safety regulations are expected in Europe and Asia-Pacific. Automotive safety is the number one growth driver for automotive electronics systems, according to Strategy Analytics, with legislation driving safety growth in areas of TPMS and occupant detection. (See automotive safety growth chart and market size. ) While the NHTSA regulation is very basic and there are no standards for TPMS systems, the need for greater product differentiation is driving requirements for higher accuracy, higher precision and more flexibility, said Eric Caron, product marketing for TPMS at Freescale. The MPXY8300 TPMS solution is designed to help drivers maintain proper tire pressure by instantly notifying them when any individual tire (including the spare)...

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