PD69104B1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

A four-port, mixed-signal, high-voltage PoE Manager. It enables network devices to share power and data over a single cable. PD69104B1 PoE-Manager chip is employed by both Ethernet switches and midspans. The device integrates power, analog circuitry, and state-of-the-art control logic into a single 48-pin plastic quad flat no-leads (QFN) package. PD69104B1 supports the following modes of operation: Microchip extended auto mode: A stand-alone mode in which the PD69104B1 detects IEEE 802.3af-2003 compliant powered devices (PDs) and IEEE 802.3at-2009 high-power devices, ensuring safe power feeding and disconnection of ports based on a power management algorithm while employing a minimum of external components. Semi auto mode: Allows the host to control which devices are powered and which are not, as well as communicate with PD69104B1 and configuring it. PD69104B1 executes all real-time functions as specified in IEEE 802.3AF-2003 (AF) and IEEE 802.3AT high power (AT) standards. This includes load detection, AF and AT classifications. In addition, the PD69104B1 device features Multiple Classification Attempts (MCA) port status monitoring. PD69104B1 supports detection of legacy / pre-standard PD devices. It also provides PD real-time protection through the following mechanisms: overload, under-load, over-voltage, over-temperature, and short-circuit. PD69104B1/F supports supply voltages between 44V and 57V, with no need for additional power supply sources, and has built-in thermal protection. PD69104B1 is a low-power device that uses internal MOSFETs and external 0.36Ω sense resistors. PD69104B1 is available in a 48 lead, 8 mm × 8 mm QFN package.

特性 Features

Supports IEEE 802.3af and IEEE 802.3at, including two-event classifications
Microchip extended auto and semi auto
Supports pre-standard PD detection
Supports Cisco device detection
Single DC voltage input (44V to 57V)
Wide temperature range: –10°C to 85°C
Low-power dissipation (0.36O sense resistor)
Drives independent 4/2-pairs power port
Includes two selectable communication modes (I²C and UART)
Parameter setting using input pins or external serial EEPROM device
Built-in dynamic power management and emergency power management mechanisms with 3 x power supply power-good pins

简介

PD69104B1属于集成电路（IC）的以太网供电（PoE）控制器。由制造生产的PD69104B1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。