Power over Ethernet (PoE) is a widely adopted technology used to transfer both data and electrical power over an RJ-45 cable.
ST offers solutions for PoE applications, on the powered devices (PD) side, compliant with both the more recent IEEE 802.3at specification, commonly known as PoE+, and the former IEEE 802.3af (PoE).
The design of power supply sections for all powered devices can be greatly simplified with the PM880x family, integrating a PoE interface and a current-mode PWM controller. The PoE interface incorporates all the functions required by the communication standard, including detection, classification, undervoltage lockout (UVLO) and in-rush current limitation.
Recommended for you
- PM8805 IEEE 802.3bt PoE-PD interface with embedded dual active bridge
- PM8804 PWM peak current mode controller for PoE and telecom systems
- PM8803 High efficiency integrated IEEE 802.3at PoE-PD interface and PWM controller type 2 PSE indicator, plus support for forward active clamp topology
- PM8800 Integrated IEEE 802.3af compliant PoE-PD interface and PWM controller with support of external source
