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Ethernet technology has a promising future in the automotive industry. Data rates ranging from 10Mbps to 10Gbps are being, or already have been, standardized. To reduce the amount of cabling, a technology known as Power over Data Line (PoDL) has been developed that enables the data and power to share the same pair of wires. This paper will discuss the connector requirements needed to ensure safe power transmission for these PoDL voltages, and demonstrate a design that meets these requirements.

Ethernet technology using a single unshielded twisted pair (UTP) is considered to have a promising future in the automotive industry. While 100Mbps transmission speeds can be achieved with standard connector platforms, 1Gbps requires specific design rules in order to ensure error free transmissions. This paper explains the specific challenges for high speed UTP solutions applied in automotive environments. Automotive relevant signal integrity (SI) and electromagnetic compatibility (EMC) connector limitations are also discussed in detail. Through simulations and testing, the connector design criteria and rules necessary for meeting all the electrical and mechanical requirements for such automotive applications are evaluated and shown. This is followed by the introduction of a modular and scalable MATEnet Ethernet connection system utilizing an optimized cable termination technology.