公开(公告)号：US06879140B2

公开(公告)日：2005-04-12

申请号：US10606206

申请日：2003-06-25

申请人： Igor Elkin ,  Ilya Bystryak ,  Jack Schuss ,  Tung M. Huynh ,  Vadim Lubomirsky

发明人： Igor Elkin ,  Ilya Bystryak ,  Jack Schuss ,  Tung M. Huynh ,  Vadim Lubomirsky

IPC分类号： H02J9/06 ,  G05F5/00

CPC分类号： H02J9/061

摘要： A power holdup circuit including a monitoring circuit and a power holdup circuit. The monitoring circuit includes an average voltage comparator and an absolute voltage comparator which cooperate to detect a voltage drop in the voltage supplied by the power supply. The monitoring circuit also includes a timer to determine the time period of the voltage dropout. If a predetermined voltage dropout event occurs, the monitoring circuit generates a control signal to a switching component which activates a holdup power source. The holdup power source includes an energy storage device that stores energy to maintain the supply voltage during dropout periods.

摘要翻译： 一种功率保持电路，包括监视电路和功率保持电路。 监视电路包括一个平均电压比较器和一个绝对电压比较器，它们协调检测由电源提供的电压的电压降。 监控电路还包括一个定时器，用于确定电压降的时间周期。 如果发生预定的电压脱落事件，则监视电路产生一个控制信号给切换组件，该开关组件激活一个保持电源。 保持电源包括能量存储装置，其储存能量以在压差期间维持供电电压。