ACTIVE/IEEE STANDARDS BASED POWER OVER ETHERNET LOW STANDBY POWER CIRCUIT ARCHITECTURE

摘要

A power source equipment (PSE) controller exhibiting low standby levels forpower overEthernet (PoE) includes a micro-controller, a detection and classificationcircuitry coupled to themicro-controller to detect if a powered device (PD) is connected and determinepower needed tooperate the connected PD, a power control and monitor circuitry coupled to themicro-controllerto power the connected PD and to monitor the power consumption of the PD. Thedetection andclassification circuitry, the power control and monitor circuitry can beindividually turned off bythe micro-controller to minimize standby power, the micro-controller can beput into deep sleepif no PD is detected or can be come out of deep sleep if a PD is detected.