PD64004AH MICROSEMI | Alldatasheet
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This document contains information that is proprietary to Micr osemi. As such, it is confidential and its disclosure is strictly prohibited by applicable law. If you and/or your company and Microsemi have executed a Non-Disclosure Agreement, then th is document is being provided in connecti on with the Agreement, and the informatio n contained herein is covered by the Agreement and under its terms may not be disclosed or used and must be protected by you and/or your company Microsemi Corporation Analog Mixed Signal Group Information in this document is subject to change without prior notice. Copyright © Microsemi 2007 Rev. April 2007 PD64004AH is a four-port, mixed-signal, high-vol tage High Power over Ethernet PSE Manager. The IC allows the detection of IEEE 802.3af-2003 powered devices, ensuring safe power feeding and removal over Ethernet ports. It also supports pre-standard IEEE802.3at devices consuming up to 59.5W.With full digital control via a serial communication interfac e and a minimum of external components, the IC integrates in multi-port and highly populated Ethernet switches. The PD64004AH has two possible working configurations : a low-cost implementation, supporting up to 571mA and a fully IEEE802.3at-read y one. Both maintain the PD64004A Enhanced mode features, for extended functions and added flexibility with the presence of the PD63000G MCU. IEEE 802.3af-2003 Compliant with standard and pre-standard IEEE 802.3af PD’s and IEEE802.3at PD’s 4-ports standalone PoE control for IEEE802.3af and PD’s of up to 25W 2-ports PoE control for IEEE802.3at PD’s Power classification with bypass option AC disconnect DC disconnect with DC modulation Supports RFC3621 Freedom to power all PoE PD’s including Cisco’s inline power Highest integration on the market, enabling the lowest real-estate occupation Enables building IEEE802.3at-ready solutions or low-cost 25W solutions Reliable and simple AC implementation Supports low power devices Enables integration in Managed Switches ARCHITECTURE I 2C or UART host interface 7-bit I 2C address selectability Opto-coupler compatible communication lines Up to 88 ports operating autonomously Backwards compatible with all PD64008-based message based user interface Up to 1528 ports on a switch Can be used with PD64012G TECHNOLOGY Best-in-industry integration Single operating voltage source (44 to 57V) 80V SmartMOS8 technology -40 oC to +70oC operating ambient temperature QFN-48-PS package, ROHS compliant Minimum per port external components No need for external DC/DC converter Power, high-voltage analog and high-density digital logic functions Fit for commercial applications SYSTEM ENHANCEMENT Per-IC soft start mechanism System-wide inrush protection Internal voltages monitoring and auto reset mechanism (Power-On Reset) Over-voltage and under-voltage protection/lock-out IEEE802.3at Layer 2 classification support Dynamic Power Management Emergency Power Management Support for 4-pairs High power architecture Maskeable Interrupt Programmable port matrix LED streaming Temperature sense/monitoring Minimal power supply stress and EMI noises Power management based on power allocation and priority map, on class value or on both, provides full flexibility and optimal power supply usage Prioritization of ports in case of power reduction Used for power supply failure conditions Capable of powering of up to 59W over 4-pairs Logical to physical port map User can receive interrupts on status or have automatic/direct LED driving Enables system monitoring Per port thermal protection, including PCB protection