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1. 发明申请

WO2009023146A2 LOAD CONTROL DEVICE HAVING A GATE CURRENT SENSING CIRCUIT 审中-公开
标题翻译：具有栅极电流感测电路的负载控制装置
公开(公告)号：WO2009023146A2
公开(公告)日：2009-02-19
申请号：PCT/US2008009558
申请日：2008-08-08
申请人： LUTRON ELECTRONICS CO , BLAKELEY MATTHEW ROBERT , MOSEBROOK DONALD , ROGAN CHRISTOPHER M , STEFFIE JAMIE J
发明人： BLAKELEY MATTHEW ROBERT , MOSEBROOK DONALD , ROGAN CHRISTOPHER M , STEFFIE JAMIE J
IPC分类号： H05B39/04
CPC分类号： H05B39/08 , H05B39/041 , Y02B20/14 , Y10T307/937
摘要： A gate drive circuit for a controllably conductive device, such as a triac, includes a trigger circuit for conducting a gate current through a control input of the controllably conductive device, and a sense circuit operable to generate a control signal representative of the magnitude of the gate current. The controllably conductive device is adapted to be coupled in series between an AC power source and an electrical load for controlling the amount of power delivered to the electrical load. The controllably conductive device is operable to change from a non-conductive state to a conductive state in response to the gate current being conducted through the control input. A controller is operable to control the controllably conductive device via the gate drive circuit and to determine, in response to the magnitude of the gate current through the control input of the controllably conductive device, whether the controllably conductive device is presently conducting current to the load.
摘要翻译：用于可控导电器件（例如三端双向可控硅开关元件）的栅极驱动电路包括用于通过可控导电器件的控制输入导通栅极电流的触发电路，以及可操作以产生代表该可控导电器件的幅度的控制信号的感测电路栅极电流。可控制导电装置适于串联耦合在AC电源和电负载之间，用于控制传送到电负载的功率量。响应于通过控制输入传导的栅极电流，可控导电器件可操作以从非导通状态转变为导通状态。控制器可操作以经由栅极驱动电路来控制可控制的导电器件，并且响应于通过可控导电器件的控制输入的栅极电流的大小来确定该可控导电器件当前是否正在向负载传导电流。

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