[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

-40oC to +85oC 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