TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications • Eight independent PSE channels • Resistor selectable Autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：3.02704 Mbytes 页数：145 Pages

TI

德州仪器

TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 power over ethernet applications • Eight independent PSE channels • Resistor selectable autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：2.98992 Mbytes 页数：146 Pages

TI

德州仪器

丝印：TPS23881B1；Package：QFN；TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications • Eight independent PSE channels • Resistor selectable Autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：3.02704 Mbytes 页数：145 Pages

TI

德州仪器

TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 power over ethernet applications • Eight independent PSE channels • Resistor selectable autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：2.98992 Mbytes 页数：146 Pages

TI

德州仪器

TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 power over ethernet applications • Eight independent PSE channels • Resistor selectable autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：2.98992 Mbytes 页数：146 Pages

TI

德州仪器

TPS23881B Type-4 4-Pair 8-Channel PoE 2 PSE Controller with Autonomous Mode and 200 mΩ RSENSE

1 Features • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 power over ethernet applications • Eight independent PSE channels • Resistor selectable autonomous operation – No external MCU required • Compatible with TI's FirmPSE system firmware • SRAM Programmable memory • Programmable

文件：2.98992 Mbytes 页数：146 Pages

TI

德州仪器

具有自主模式的 4 类、四线对、8 通道 PoE PSE 控制器

TPS23881B 是一款 8 通道电源设备 (PSE) 控制器，旨在按照 IEEE 802.3bt 标准向以太网电缆提供电力。这八个单独的电源通道可以按 2 线对（单通道）或 4 线对（双通道）PoE 端口的任意组合进行配置。PSE 控制器可以检测具有有效特征、完全相互识别的供电设备 (PD)，然后提供电源。\n\nTPS23881B 在 TPS2388 的基础上进行了改进，减小了电流检测电阻，提供了可选的自主运行、SRAM 可编程性、可编程功率限制、电容测量以及与 TI FirmPSE 系统固件的兼容性（请参阅器件比较表）。\n\n可编程 SRAM 支持通过 I2C 实现现场固件可升级性， 适用于 PoE 2 3 类或 4 类 以太网供电应用的 IEEE 802.3bt PSE 解决方案\n \n八个独立的 PSE 通道\n \n可选电阻器自主运行 \n \n无需外部 MCU\n \n\n \n与 TI 的 FirmPSE 系统固件兼容\n \nSRAM 可编程存储器\n \n可编程功率限制精度 ±2.5%\n \n200mΩ电流检测电阻\n \n传统 PD 电容测量\n \n可选的 2 线对或 4 线对端口功率分配 \n \n15.4W、30W、45W、60W、75W 或 90W\n \n\n \n单一特征和双特征 PD 兼容性\n \n各端口专用的 14 位积分电流 ;

TI

德州仪器