Linear LTC4266A+LTC4266C网络供电完整解决方案
Linear公司的LTC4266A是四;路PSE控制器,可向LTPoE++兼容的PD提供高达90W的功率,而LTC4266C是完全自动化的PSE系统,能为Type 1 (多达13W) PD供电.其先进的电源管理包括14位电流监测ADC,DAC可编程的限流以及预选端口的多种快速关断.主要用在LTPoE++ PSE交换/路由, LTPoE++ PSE中跨, IEEE 802.3at Type 1 PSE交换/路由以及IEEE 802.3at Type 1 PSE中跨.本文介绍了LTC4266A/LTC4266C主要特性, 网络供电系统框图,以及完整的4端口以太网大功率源框图, 光隔离的I2C总线连接等.
Quad PoE/PoE+/LTPoE++ PSE Controller
The LTCR4266A is a quad Power Sourcing Equipment (PSE) controller capable of delivering up to 90W of LTPoE++ power to a compatible LTPoE++ Powered Device (PD). A proprietary detection/classification scheme allows mutual identification between a LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable with existing Type 1 (13W) and Type 2 (25.5W) PDs. The LTC4266A feature set is a superset of the popular LTC4266. These PSE controllers feature low RON external MOSFETs and
0.25Ω sense resistors which are especially important at the LTPoE++ current levels to maintain the lowest possible heat dissipation.
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