Power sourcing equipment controllers leverage the latest industry standards

Skyworks has introduced the most recent addition to its broad 802.3bt PoE family, the Si3472 and Si3473 PSE controllers. The newly launched Si3474 can power up to four 802.3bt four-pair Ethernet ports with 90W per port and supports thermally efficient 200mOhm current sense – the new device powers up to four 802.3bt two-pair Ethernet ports with up to 45W per port. The new Si3473 powers up to eight 802.3bt two-pair Ethernet ports with up to 45W per port and are backwards compatible with previous-generation IEEE802.3at and af standards.

All of the company's multi-port PSE devices support autonomous or hosted operation, automatically detecting valid PDs and cutting off port power when connected PDs are removed. In addition, each PSE device offers a full-featured I2C register interface for advanced power management and control.