TI TPS2540 USB端口电源充电解决方案

TI 公司的TPS2540和TPS2541集合了限流的USB端口电源开关和USB 2.0高速数据线(D+/D-)开关以及USB充电端口识别电路, 满足USB 2.0 BC1.2 (draft)和中国电信标准YD/T 1591-2009, USB 2.0数据带款2.6GHz,可调限流高达2.8A,主要用在笔记本电脑和其它智能USB主设备以及通用墙充电适配器.本文介绍了TPS2540和TPS2541主要特性,方框图以及典型应用框图, TPS2540 和TPS2541 EVM评估模块电路图和材料清单(BOM).

The TPS2540 and TPS2541 are a combination of current-limited USB port power switch with a USB 2.0 high-speed data line (D+/D-) switch and a USB charging port identification circuit. Applications include notebook PCs and other intelligent USB host devices. The wide bandwidth (2.6 GHz) data-line switch also features low capacitance and low on resistance, allowing signals to pass with minimum edge and phase distortion. The TPS2540/41 monitors D+ and D-, providing the correct hand-shaking protocol with compliant client devices.

The TPS2540/41 supports the following charging logic schemes:

USB 2.0 BC1.2 (draft)

Chinese Telecom Standard YD/T 1591-2009

Divider Mode, compliant with Apple devices such as iPod and iPhone

CTL1-CTL3 logic inputs are used to select one of the various charge modes provided by the TPS2540 and TPS2541.

TPS2540和TPS2541主要特性:
  ..

查看全文