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2. 发明公开

EP1776628A4 SWITCHED CONSTANT CURRENT DRIVING AND CONTROL CIRCUIT 有权转让
标题翻译： SCHALT-KONSTANTSTROMANSTEUER- UND STEUERSCHALTUNG
公开(公告)号：EP1776628A4
公开(公告)日：2009-06-10
申请号：EP05759404
申请日：2005-06-23
申请人： TIR TECHNOLOGY LP
发明人： ROBINSON SHANE , JUNGWIRTH PAUL , TOMA ION
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/0857
摘要： The driving and control device according to the present invention provides a desired switched current to a load including a string of one or more electronic devices, and comprises one or more voltage conversion means, one or more dimming control means, one or more feedback means and one or more sensing means. The voltage conversion means may be a DC-to-DC converter for example and based on an input control signal converts the magnitude of the voltage from the power supply to another magnitude that is desired at the high side of the load. The dimming control means may comprise a switch such as a FET, BJT, relay, or any other type of switching device, for example, and provides control for activation and deactivation of the load. The feedback means is coupled to the voltage conversion means and a current sensing means and provides a feedback signal to the voltage conversion means that is indicative of the voltage drop across the current sensing means which thus represents the current flowing through the load. The current sensing means may comprise a fixed resistor, variable resistor, inductor, or some other element which has a predictable voltage-current relationship and thus will provide a measurement of the current flowing through the load based on a collected voltage signal. Based on the feedback signal received, the voltage conversion means can subsequently adjust its output voltage such that a constant switched current is provided to the load.
摘要翻译：根据本发明的驱动和控制设备向包括一串或多个电子设备的负载提供期望的切换电流，并且包括一个或多个电压转换装置，一个或多个调光控制装置，一个或多个反馈装置和一个或多个感测装置。电压转换装置例如可以是DC-DC转换器，并且基于输入控制信号将来自电源的电压的大小转换为负载高端处所需的另一大小。调光控制装置例如可以包括诸如FET，BJT，继电器或任何其他类型的开关装置的开关，并且提供对负载的激活和去激活的控制。反馈装置耦合到电压转换装置和电流感测装置，并向电压转换装置提供反馈信号，该反馈信号表示电流感测装置两端的电压降，其表示流过负载的电流。电流感测装置可以包括固定电阻器，可变电阻器，电感器或具有可预测的电压 - 电流关系的一些其它元件，并且因此将基于收集的电压信号提供流过负载的电流的测量值。基于接收到的反馈信号，电压转换装置可随后调节其输出电压，使得向负载提供恒定的开关电流。

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