DESCRIPTION

Microsemi’s PD69108 Power over Ethernet (PoE) Manager integrates power, analog and state of the art logic into a single 48 pin, plastic QFN package. The device is used in Ethernet switches and Midspans, enabling network devices to share power and data over the same cable.

The PD69108 device is an 8 ports, mixed-signal, high-voltage PoE driver. It enables detection of IEEE802.3at-2009 compliant Type 1 and Type 2 PDs (Powered Devices), ensuring safe power feeding and disconnection of ports with full digital control and a minimum of external components.

KEY FEATURES

◆ IEEE802.3af-2003 compliant

◆ IEEE802.3at-2009 compliant,

including two-event classification

◆ Supports pre-standard PD detection

◆ Supports Cisco devices detection

◆ Single DC voltage input (44 to 57 VDC)

◆ Input voltage out of range protection

◆ Wide temperature range: -10°C to

+85°C

◆ PD69108F version covering -40°C to

+85°C

◆ Over-temperature protection

◆ Low power dissipation (0.36 Ω sense

resistor and 0.3Ω MOSFET Rdson)

◆ Includes Reset command pin

◆ 4 x direct address configuration pins

◆ Continuous port monitoring and

system data

◆ Configurable load current setting

◆ Configurable AT/AF modes

◆ Configurable standard and legacy

detection mode

◆ Power soft start mechanism

◆ On-chip thermal protection

◆ Voltage monitoring/protection

◆ Built in 3.3 VDC and 5 VDC regulators

◆ Internal power on reset

◆ RoHS compliant

◆ Emergency power management

supporting four configurable power

bank I/Os

◆ Can be cascaded to up to 12 PoE

devices (96 ports)