Texas Instruments (TI) has introduced its first power management integrated circuits (ICs) for the emerging 'Power over Ethernet' standard.
Compatible with the soon-to-be ratified Institute of Electrical and Electronics Engineers 802.3af standard, the ICs allow direct current (DC) power and data to be delivered over a single Ethernet cable.
TI said this would lead to reduced system cost and increased capability and reliability for developers of Ethernet-based systems and appliances.
The chips are targeted at devices such as wireless network access points, IP phones, security systems, point-of-sale terminals and power sourcing equipment such as Ethernet routers, switches and hubs.
"By offering high performance and fully compliant Power over Ethernet semiconductor and system-level solutions, TI is providing system designers with a way to quickly deliver cost-effective, data-driven applications to end-consumers," said Rich Valley, manager of TI's system power management business.
The circuits contain TI's TPS2370 power interface switch, which manages discovery, classification and delivery of DC power to a powered device over a standard Ethernet twisted pair cable.
In addition, the company's TPS2383 power sourcing equipment power manager can independently manage power for up to eight Ethernet ports.
The TPS2383 manager has five selection pins, which permit the device to address up to 32 devices and provide individual control and monitoring of up to 256 Ethernet ports from a single master controller.
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