| UCS2112, dual-channel model.">扩展其可编程USB端口电源控制器系列，Microchip已经增加了UCS2112，双通道模式。它支持两个端口，8个可编程的连续电流限制，范围从0.53到3.0A的每个端口，以实现更快的充电时间在更高的电流。有集成电流监控，精确电流限制，充电配给和动态热量管理，保护和提高整个系统的正常运行时间。控制器帮助设计者解决主机设备，例如笔记本电脑，平板电脑，监视器，基座和打印机的汽车，计算机，教育和航空应用的阵列，以及多端口充电配件和存储。它可以单独工作，或与USB集线器相结合，建立一个完整的充电和/或USB通信系统。
动态热管理功能可以防止停机的电流限制接近，这也使得在其他设备已经完全停止充电。集成电流监测器省去了一个外部检测电阻，使一个“附加探测”信号，即不依赖于主电源被激活的是关闭或睡眠主机。目前的监测和配给也有利于管理多个充电设备，并可以平衡动态负载电流较小的电源系统。
该控制器对准USB电源交货的举措，符合USB-IF BC1.2。这是一个20针QFN封装。
评估板支持USB端口电源控制器也可以。
Expanding its programmable USB-port power controller portfolio, Microchip has added the UCS2112, dual-channel model. It supports two ports, with eight programmable continuous current limits, ranging from 0.53 to 3.0A for each port, to enable faster charging times at higher currents. There is integrated current monitoring, precision current limiting, charge rationing and dynamic thermal management to protect and increase overall system uptime. The controller helps designers to address an array of host devices, such as laptops, tablets, monitors, docking stations and printers in automotive, computing, education and aviation applications, as well as multi-port charging accessories and storage. It can work individually, or in conjunction with USB hubs, to create a complete charging and/or USB-communication system.
The dynamic thermal-management feature prevents shutdown as the current limit nears, this also allows for charging where other devices have stopped completely. The integrated current monitor eliminates the need for an external sense resistor and enables an ‘attach detect’ signal that does not rely on the main power to be active for hosts that are off or sleeping. Current monitoring and rationing also help to manage multiple charging devices and can balance a dynamic load current for systems with smaller power supplies.
The controller aligns with the USB Power Delivery initiatives and complies with USB-IF BC1.2. It is available in a 20pin QFN package.
An evaluation board to support the USB-port power controller is also available. |
