Patent ID: 8994287
Filing Date: 2015-03-31
Classification: B60Q,H05B

Abstract:
1. A light source control device, comprising: a conversion unit configured to generate a driving current flowing in a target light source to be driven; and a control unit configured to control the conversion unit, wherein the conversion unit includes a primary side circuit, a secondary side circuit, and a capacitor provided between the primary side circuit and the secondary side circuit, the primary side circuit includes a switching element and a first inductor and is configured such that energy is stored in the first inductor when a switching element is ON, the secondary side circuit includes a second inductor and is configured such that a changing speed of the driving current is limited by the second inductor, the conversion unit is configured such that the driving current is raised when the switching element is ON, and the control unit turns OFF the switching element when a magnitude of the driving current exceeds a first threshold value, and turns ON the switching element when the magnitude of the driving current falls below a second threshold value which is smaller than the first threshold value.