Microchip Technology PD77020
The PD77020 PoE Power Management Controller provides multi-port PoE functions, such as, port mapping (Port Matrix), port priority, port status, and system power management. The PD77020 device can be used in conjunction with PD77728 seventh generation PoE Manager/Controller from Microchip. The PD77020 device is based on a Microchip SAMD21 controller and is packaged in a 5 mm × 5 mm 32-pin QFN package.FEATURES
● A PSE System operating in the Controller mode with PD77728 has the following system and port level features: – Detection – Classification – Inrush – Port Power Up – Real-Time Protection (RTP)● A PSE System operating in the Controller mode with PD77020 has the following system and port level features: – Support for up to 16 Power Banks – Power Management
● Configure active ports (disabling unused ports)
● Power up ports (based on detection/classification results)
● Ports power down (based on power budget)
● Autoclass
● Power budgeting
● Power Good pins to OSS translation
● OSS—Port priority
● Power measurement – Communication with Host (15-byte protocol)
● System, Device, and Port Status
● Temperature alarm
● Reading chips temperature – LLDP
● Host – High level configuration (total power budget) – Ports priority definitions – Reading PoE information from PD77020
APPLICATIONS
A PSE based on the PD77728 and the PD77020 devices has the following key applications:● Switches and routers for enterprise, small and medium business, SOHO, and commercial markets.