Light source apparatus and driving apparatus thereof

A driving apparatus, suitable for driving at least one light source module, comprising:

• A first node and a second node, wherein the first node is coupled to the light source module, and the driving apparatus receives an alternating current (AC) voltage through the first node and the second node;
• a clock synchronization unit, coupled to the second node, for converting the AC voltage into a clock synchronization signal;
• a control unit, coupled to the clock synchronization unit, for converting a preset brightness value into a driving current, outputting an adjusting signal according to a timing of the clock synchronization signal, and modulating a pulse width of the adjusting signal according to a feedback signal;
• a switch unit, coupled between the second node and the light source module, for determining whether or not the AC voltage is provided to the light source module according to a control of the adjusting signal;
• and
• a feedback unit, coupled between the light source module and the control unit, for detecting a load state of the light source module, and outputting the feedback signal according to a detection result.