power over data lines (802.3bu) (PoDL)
Power over Data Lines (PoDL) is an Ethernet technology, comparable to Power over Ethernet ( PoE), to supply Powered Devices( PD) in motor vehicles, in the Internet of Things( IoT) and in industrial automation with supply voltage via Single Pair Ethernet( SPE).
PoDL, which has been standardized by the IEEE working group802.3bu, involves single pair Ethernet (SPE) and the 100Base- T1 and 1000Base-T1interfaces. The supply voltage is transmitted via a single Unshielded Twisted Pair( UTP) link segment simultaneously with the data transmission at data rates of 100 Mbps and 1 Gbps. There is minimal interference between the transmitted data and the supply voltage. This technology is used in automotive Ethernet, transportation industry and industrial control.
Power over Data Lines (PoDL) can be used to transmit regulated and unregulated voltages of 12 V, 24 V and 48 V with power ratings of between 0.5 W and 50 W. The maximum current is 2 A and the maximum current is 1 A. The maximum current is 2 A, which is higher than with Power over Ethernet (PoE). The power levels are sufficient to supply power to LED lighting, surveillance cameras, kiosk systems, card readers or access points. However, PoDL requires SPE cabling with two-core SPE cables conforming to IEC 61156. Category 7 STP cables are not suitable.