Partial Networking solution for vehicles helps reduce CO2 emissions and improve energy efficiency

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By eeNews Europe

The stand-alone TJA1145 CAN transceiver and system basis chip UJA1168 – the world’s first highly integrated solution to support CAN Partial Networking – give design engineers precision control over a vehicle’s bus communication network. By intelligently de-activating those Electronic Control Units (ECUs) that are currently not needed, engineers are able to reduce vehicle fuel consumption and CO2 emissions without sacrificing performance or consumer experience.

In current in-vehicle networking architectures, all ECUs are always active and consuming power when the vehicle is in use. This is the case even if the applications they control aren’t continuously required, such as seat positioning, sun roof operation, window lifting etc. CAN Partial Networking changes this model by activating only those ECUs that are functionally required, while the other ECUs remain in a low-power mode until needed. This equates to savings in power consumption, reducing costs, wiring and CO2 emissions. CAN Partial Networking is also extremely beneficial for electric and hybrid vehicles as it helps extending their operating range and optimizing charging time.

TJA1145 and UJA1168 are next-generation networking solutions, which combine analog circuitry and high-density digital circuits. TJA1145 is a high-speed CAN transceiver, while UJA1168 is a CAN system basis chip with 5 V/100 mA microcontroller supply. Both support CAN Partial Networkingby enabling “Selective wake-up” and “Selective sleep” functionality. Both chips come with a small footprint based on the HVSON14 package. For backwards compatibility reasons, the TJA1145 is also available in the SO14package.

Engineering samples for TJA1145 and UJA1168 are currently available with volume shipping in 2012.

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