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PD64004AH
(R)
TM
4-PORT HPoE PSE MANAGER
DESCRIPTION
PD64004AH is a four-port, mixed-signal, high-voltage 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 interface 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-ready one. Both maintain the PD64004A Enhanced mode features, for extended functions and added flexibility with the presence of the PD63000G MCU.
FEATURES
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
BENEFITS
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
I2C or UART host interface 7-bit I2C 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 -40oC 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
PD64004AH
Copyright (c) Microsemi 2007 Rev. April 2007
Microsemi Corporation Analog Mixed Signal Group
Information in this document is subject to change without prior notice.
This document contains information that is proprietary to Microsemi. 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 this document is being provided in connection with the Agreement, and the information contained herein is covered by the Agreement and under its terms

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