LIGHT DRIVING CIRCUIT

摘要

A light driving circuit includes a first and second illuminant unit, a power conversion unit, a first and second switching unit, and a first control unit. The power conversion unit receives an input voltage and converts the input voltage into an output voltage. The first switching unit is coupled to the first illuminant unit. When the first switching unit is turned on, the first illuminant unit is driven by the output voltage to emit light and generate a first output current. The second switching unit is coupled to the second illuminant unit. When the second switching unit is turned on, the second illuminant unit is driven by the output voltage to emit light and generate a second output current. The first control unit controls the first switching unit and the second switching unit to be turned on/off according to the first output current and the second current, respectively.

主权项

1. A light driving circuit comprising:
a first illuminant unit; a second illuminant unit; a power conversion unit configured for generating an output voltage; a first switching unit coupled to the first illuminant unit, the first illuminant unit being driven by the output voltage to emit light and generate a first output current when the first switching unit is turned on; a second switching unit coupled to the second illuminant unit, the second illuminant unit being driven by the output voltage to emit light and generate a second output current when the second switching unit is turned on; and a first control unit configured for controlling the first switching unit and the second switching unit to be turned on and turned off according to the first output current and the second output current, respectively.