[PowerDsine]

PD64004A  is  a  four-port,  mixed-signal,  high-voltage 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.  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  PD64004A  has  three  possible  working  configurations:  an  Automatic  stand-alone  mode,  for  basic  PoE functions, the PoE+ Mode supporting legacy devices  and autonomous operation with the PD33000G MCU and an Enhanced mode, for extended functions and added flexibility with the PD63000G and PD83000G MCU’s.

Features  Benefits

IEEE 802.3af-2003

Compliant with IEEE 802.3af and pre-stand PD’s

4-ports standalone PoE control

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

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

-40^oC to +85^oC 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 industrial 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

Dynamic Power Management

Emergency Power Management (Enhanced Mode)

Support for 4-pairs High power architecture (Enhanced Mode)

Maskeable Interrupt

Programmable port matrix (Enhanced mode)

LED streaming (Enhanced) or driving (PoE+)

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 31W 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