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公开(公告)号：US10383184B2
公开(公告)日：2019-08-13
申请号：US16172867
申请日：2018-10-29
发明人： SungHo Jin , HyungJin Lee , SangWook Han
IPC分类号： H05B33/08 , H05B41/39 , H05B41/392
摘要： A light-emitting diode driving module includes an LED driving circuit to activate light-emitting diodes driven by a modified rectified voltage, and to adjust driving currents conducted to driving nodes to the light emitting diodes; a driving current controller to receive a dimming signal indicative of a degree of modulation of the rectified voltage, and to control currents conducted to the driving nodes depending on the dimming signal; and a current blocking circuit to block the currents of the driving nodes when a dimming level of the dimming signal decreases lower than a first threshold value, and unblock the currents of the driving nodes when the dimming level increases above a second threshold value higher than the first threshold value.
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公开(公告)号：US10165632B2
公开(公告)日：2018-12-25
申请号：US15946993
申请日：2018-04-06
发明人： SungHo Jin , HyungJin Lee , SangWook Han
IPC分类号： H05B33/08 , H05B41/39 , H05B41/392
摘要： A light-emitting diode driving module includes an LED driving circuit to activate light-emitting diodes driven by a rectified voltage, and to adjust driving current conducted through driving nodes to the light-emitting diodes depending on a voltage of a driving current setting node; and a driving current controller to control the voltage of the driving current setting node by outputting a driving current control signal. The driving current controller includes a control signal output circuit connected to a dimming node to receive a dimming signal when the rectified voltage is modulated, and to adjust the driving current control signal depending on the dimming signal; a mode detector to detect whether the rectified voltage is modulated by receiving a source voltage depending on the rectified voltage, and to enable a selection signal depending on a detection result; and a power compensator to adjust the driving current control signal when the selection signal is enabled.
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