A lighting device that is connected to a DC power source and supplies an electric current to a solid-state light-emitting element (LED) whose forward voltage ranges from Vfmin to Vfmax includes a DC/DC converter (buck converter) and a control unit. The DC/DC converter includes a switching element. The control unit turns OFF the switching element by peak current control, and when the solid-state light-emitting element to be connected to the lighting device has a forward voltage of Vfmax, turns ON the switching element in fixed cycles such that the DC/DC converter operates in BCM.
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机译:连接至DC电源并向正向电压在Vfmin至Vfmax范围内的固态发光元件(LED)提供电流的照明装置包括DC / DC转换器(降压转换器)和控制单元。 。 DC / DC转换器包括开关元件。控制单元通过峰值电流控制将开关元件断开,并且当要连接到照明装置的固态发光元件的正向电压为Vfmax时,以固定周期接通开关元件,以使DC /直流转换器在BCM中运行。
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