PD39208数据手册集成电路（IC）的以太网供电（PoE）控制器规格书PDF

描述 Description

The PoE manager IC integrates power, analog, andstate-of-the-art logic into a single 56-pin, plastic QFN package. The device isused in Ethernet switches and midspans to allow network devices to share powerand data over the same cable. The PD39208 device is an 8-port, mixed-signal,and high-voltage PoE driver. Together with the PD39210 external MCU, itperforms as a PSE system designed specifically to support the IEEE 802.3atstandard. The PD39208 supports supply voltages between 32V and 57V without additionalpower supply sources. An on-going monitoring of system parameters for the hostsoftware is available via system communication. Internal thermal protection isimplemented in the chip. PD39208 is a low-power dissipation device that usesinternal MOSFETs and internal 100 mΩ sense resistors. PD39208 is available in a56 pin, 8 mm x 8 mm QFN package.

特性 Features

• Part of PD39210 + PD39208 chip set
• 8 independent PoE channels
• Complies with IEEE 802.3af and IEEE 802.3at
• Drives 2-pair power ports
• Single DC voltage input (32V to 57V) w/ built in 3.3V and 5V regulators
• Input voltage out of range protection, voltage monitoring / protection
• Wide ambient temperature range: -40°C to +85°C
• On-chip over-temperature thermal protection and monitoring
• Low power dissipation (0.1ohm sense resistor and 0.2ohm MOSFET Rdson per channel)
• Power soft start mechanism, Internal power on reset
• Can cascade up to six (6) PoE devices (48 physical 2-pair ports)
• Detailed port status
• Programmable threshold temperature alarm limit
• Interrupt out pin for system and port events
• Forced port power ON function
• Port power limit setting, port matrix and priority
• 56-pin, 8 mm x 8 mm QFN package

简介

PD39208属于集成电路（IC）的以太网供电（PoE）控制器。由制造生产的PD39208以太网供电（PoE）控制器以太网供电 (PoE) 控制器允许设计人员通过单个以太网连接传输电流和数据。远程设备通过以太网电缆供电，因此无需电池、本地电源适配器和其他电源电缆。桥式整流器和 N+1 O-Ring 是两种 PoE 控制器类型。可用特性可能包括 N 和 P 沟道 FET、内部开关和汽车认证。