Automotive Power Line Communication

The wiring harness is the second heaviest component in the car after the power train. It is also the second most expensive component in a vehicle. Wiring length is between 4 and 8 km long and weights between 40 to 80 Kg. Additionally, wiring is also the third prime cause of vehicle failure after tires and battery.

Yamar’s semiconductor devices designed to eliminate part of these wires by sending data over the vehicle power line, overcoming the interfering noises on these lines. The devices reduce the number of wires in the car, decreasing its weight and space, increasing the vehicle reliability and improving the fuel economy. The SIG60 and DCAN250 devices operate as power line communication physical layer transceivers for CAN bus and LIN bus, providing wireless solution.

Yamar’s IC devices were designed to operate over the vehicle noisy DC lines and to meet the EMC requirements.

Applications include front and backlight control, Truck-Trailer communication, EV Battery management, Doors network, Body Electronics lights environment management, in vehicle entertainment control and many more.

Power line vehicle networks save harness

Saving harness with powerline communication


Truck-tralier communication over its power line

Truck – trailer Power line communication in the EU SPARC project

Track – Trailer communication was part of the EU SPARC project coordinated by Daimler. Yamar performed multiplex communication network over the powerline between a Truck and its Trailer to control the backlights and to transfer redundant CAN bus data over the powerline as a fully safe additional redundant CAN bus channel over the power line. If the traditional CAN bus will fail, still the CAN network will operate over the power line.

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