PD64012 Datasheet | PowerDsine

Features - - - - - - - - - - - - - - - - - - - - - - - IEEE 802.3af-2003 pliant Drives 12 independent power ports Can be cascaded for up to 48 ports, using a master/slave architecture Supports IETF Power Ethernet MIB (RFC 3621) Thermal protection per port Thermal monitoring capabilities Multi-point resistor detection Supports DC modulation method under-current detection according to IEEE 802.3af-2003 AC & DC disconnect functions PD classification function Operates from single input (44 to 57 V) I2C bus interface Supports foldback current limiting Digitally programmable overcurrent protection per port Digitally programmable timers Power management algorithm for up to 48 ports Internal power-on reset Power soft-start algorithm Fast power shutdown, in case of power supply failure Automatic on/off sequencer for up to 48 ports Disable/enable power feeding Continuous port current monitoring Supports back-off feature for Midspan implementation Additional features for Enhanced mode: Description Power Dsine’s™ PD64012 Power over Ethernet (Po E) Manager chip integrates power, analog and logic functions into a single 64-pin, plastic pack. It is used in Ethernet switches and Midspans to allow next generation network devices to share power and data over the same cable. The device is a twelve-port, mix-signal, high-voltage Power over Ethernet driver. The Po E Manager allows the detection of IEEE 802.3af-2003 pliant terminals, referred to as powered devices or PDs, ensuring safe power feeding and removal over Ethernet ports. With full digital control via a serial munication interface and a minimum of external ponents, the device integrates in multi-port and highly populated Ethernet switches. The PD64012 implements all real time functions according to IEEE 802.3af-2003, including: detection, classification, and port status monitoring; as well as system level activities such as: power management and MIB support, for system management....