公开(公告)号：US06678829B1

公开(公告)日：2004-01-13

申请号：US09596451

申请日：2000-06-19

申请人： Ross E. Teggatz ,  David J. Baldwin ,  Sanmukh M. Patel ,  Juan F. Alvarez

发明人： Ross E. Teggatz ,  David J. Baldwin ,  Sanmukh M. Patel ,  Juan F. Alvarez

IPC分类号： G06F128

CPC分类号： G06F1/266 ,  G06F1/26

摘要： An integrated solution to power management and distribution on a power bus, such as needed for an IEEE 1394 compliant expansion board. The integrated circuit includes a uni-directional switch on the input and one or more bi-directional switches on one or more outputs. Current can flow from the system power supply to any connected peripherals via the uni-directional switch and bi-directional switches, or can flow from the peripheral having the highest voltage power supply to the other peripherals via the bi-directional switches, but current will not flow back to the main system because of the unidirectional switch connected to the system power supply. Over-current conditions are quickly detected and the bi-directional switch is opened to prevent damage or over-heating. The switches are preferably fabricated as power FETs using NMOS technology. Several integrated circuits can be cascaded together to accommodate multiple peripherals.

摘要翻译： 电源总线上的电源管理和分配的集成解决方案，如IEEE 1394兼容扩展板所需。 集成电路包括输入上的单向开关和一个或多个输出上的一个或多个双向开关。 电流可以通过单向开关和双向开关从系统电源流向任何连接的外围设备，或者可以通过双向开关从具有最高电压电源的外围设备流向其他外设，但是当前将 由于单向开关连接到系统电源，不会流回主系统。 快速检测过电流状态，并打开双向开关以防止损坏或过热。 这些开关优选地使用NMOS技术制造为功率FET。 几个集成电路可以级联在一起以适应多个外围设备。