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1. 发明申请

WO2012156891A3 LED RETROFIT DRIVER CIRCUIT AND METHOD OF OPERATING THE SAME 审中-公开
标题翻译： LED转换驱动电路及其操作方法
公开(公告)号：WO2012156891A3
公开(公告)日：2013-01-10
申请号：PCT/IB2012052384
申请日：2012-05-14
申请人： KONINKL PHILIPS ELECTRONICS NV , TOUSAIN ROBERTUS LEONARDUS , EDDEANE REDOUANE , CLAESSENS DENNIS JOHANNES ANTONIUS , VAEL PHILIP LOUIS ZULMA , JIANG JACK
发明人： TOUSAIN ROBERTUS LEONARDUS , EDDEANE REDOUANE , CLAESSENS DENNIS JOHANNES ANTONIUS , VAEL PHILIP LOUIS ZULMA , JIANG JACK
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , F21K9/23 , H05B39/044
摘要： A LED retrofit driver circuit (3) is provided, comprising at least an input (6) for receiving an operating voltage from a power supply (2), an output (8) for connection to one or more LED units (5), a power converter (7) connected with said input (6) and said output (8) and configured to provide a lamp current (50) at said output (8) during operation in at least a first and a second operating state. To provide a versatile circuit (3), allowing operation with a variety of power supplies and under various load conditions, in said first operating state, the power converter (7) is adapted to switch between a high current generating mode (40), in which the power converter (7) is configured to draw current pulses from said power supply (2) to provide a first average input current (33a), and an OFF mode (42) in which no current is drawn from said power supply (2). In said second operating state, said power converter (7) is adapted at least to operate in a low current generating mode (41), in which the power converter (7) is configured to draw a current from said power supply (2) to provide a second average input current (33b)which is lower than said first average input current (33a).
摘要翻译：提供了一种LED改装驱动器电路（3），至少包括用于从电源（2）接收工作电压的输入端（6），用于连接到一个或多个LED单元（5）的输出端（8）功率转换器（7），其与所述输入端（6）和所述输出端（8）连接并被配置为在至少第一和第二操作状态下在所述输出端（8）处提供灯电流（50）。为了提供通用电路（3），允许在所述第一操作状态下使用各种电源和在各种负载条件下操作，功率转换器（7）适于在高电流产生模式（40）之间切换，功率转换器（7）被配置为从所述电源（2）提取电流脉冲以提供第一平均输入电流（33a），以及不从所述电源（2）吸取电流的OFF模式（42））。在所述第二操作状态下，所述功率转换器（7）至少适于在低电流产生模式（41）中工作，其中功率转换器（7）被配置为将来自所述电源（2）的电流吸入提供低于所述第一平均输入电流（33a）的第二平均输入电流（33b）。

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