ADI announces the Power by Linear LTC4291 / 92 isolated four-port PSE controller chipset, which is said to be the first to pass a series of IEEE 802.3bt (PoE ++) PoE compliance tests managed by Sifos Technologies group. PoE often poses challenges for system and network engineer PSE evaluations. PSE is a multi-channel intelligent DC power supply that can be activated and deactivated through a standardized process without disrupting traditional Ethernet data transmission. At the same time, compliance testing is complicated by the need to work on multiple transmission and polarity configurations.
Equipped with multiple two-port PSA-3202 test blades, the Sifos 24-port PSA-3000 PowerSync analyzer performs fully automated testing and analysis of LTC4291 / 92-based PSEs. An uncompromising compliance test suite coupled with specialized analysis capabilities makes the device compliant with the IEEE 802.3at (PoE +) standard, the upcoming 802.3bt standard, and other proprietary specifications. These scalable design and test solutions have generated extensive PoE knowledge and years of experience, shortened time to market, and allowed deployment of the IEEE 802.3bt PoE network when the standard was approved in 2018.
The device chipset is available in commercial and industrial temperature ranges. The LTC4291 digital controller is available in a RoHS-compliant 24-pin 4mm x 4mm QFN package, while the LTC4292 analog controller is available in a 40-pin 6mm x 6mm QFN package. This device is the company's first 802.3bt PSE controller and provides an upgrade path for the popular LTC4266 four-port 802.3at PSE controller.
