Equipping Electric Cars with Optical Connectivity

KDPOF – an international supplier for automotive gigabit connectivity over plastic optical fibers – provide their GEPOF – innovative Automotive Gigabit Ethernet POF – for electric and autonomous driving to perfectly solve the electrical challenges and interferences of new powertrain architectures. “We are happy to announce that several car makers and Tier-1 suppliers have adopted our optical technology for electrical powertrains and autonomous vehicles,” stated Carlos Pardo, CEO and Co-Founder of KDPOF. “Electromagnetic noise is a major issue in any electrical power train, both in full electrical or hybrid architectures. It affects the operation of the electronic circuits within the car and countermeasures have to be taken at early stages of the design.”

Presentation at the Automotive Ethernet Congress: KDPOF provides Gigabit Ethernet over POF connectivity according to the IEEE 802.3bv specification (Source: KDPOF)

Consequently, due to the presence of hazardous high voltage (above 25 Vac or 60 Vdc), galvanic isolation is necessary between the domains of a battery management system and also between the primary and secondary systems of both ac-dc and dc-dc. Optical connections with POF provide the optimal means to achieve galvanic isolation while realizing data communications between the domains at the same time. KDPOF presented their GEPOF technology at the Automotive Ethernet Congress on January 30 and 31, 2018 in Munich, Germany.

The control of all the subsystems involved in the electrical powertrain requires a communication bus that transports the control, actuation and sensor signals among the different components in all domains. The communication bus has to be immune to the electromagnetic noise and, at the same time, comply with the mechanical, temperature, and weight constraints of the overall vehicle. 1000BASE-RH, the Ethernet specification for a Gigabit capable, POF-based communication protocol, is ideal for the new architectures, as it provides a natural galvanic isolation between communicating modules and a radiation free harness. Moreover, it can operate at 100 Mbps for most current needs while also supporting future needs at 1 Gbps.

KDPOF recently announced the sampling of the KD1053, the first automotive grade Gigabit Ethernet POF transceiver. The KD1053 complies with the new IEEE standard amendment Std 802.3bv for Gigabit Ethernet over POF. It fully meets the requirements of carmakers by providing high connectivity with a flexible digital host interface, low latency, low jitter, and low linking time. (Source: KDPOF)

Link: Automotive Products, KDPOF Knowledge Development for POF, S.L., Madrid, Spain

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