发明名称 Sigma delta current source and LED driver
摘要 A circuit arrangement includes a first light emitting diode and a second light emitting diode emitting light of different colors arranged adjacent to each other for additive color mixing. A first and second controllable current sources are connected to the first and second light emitting diode, respectively, such that the load currents of the light emitting diodes depend on respective control signals received by the current sources. First and second sigma-delta modulators are connected to the first and second light emitting diodes, respectively, and provide bit-streams as control signals to the current sources. The mean value of each bit-stream corresponds to the value of an input signal of the respective sigma-delta modulator.
申请公布号 US8278840(B2) 申请公布日期 2012.10.02
申请号 US20100719655 申请日期 2010.03.08
申请人 LOGIUDICE ANDREA;CHIOZZI GIORGIO;INFINEON TECHNOLOGIES AUSTRIA AG 发明人 LOGIUDICE ANDREA;CHIOZZI GIORGIO
分类号 G05F1/00 主分类号 G05F1/00
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