Light source driving module and method

A light source driving method used with a light source driving module electrically connected to a light source and a controller, wherein the light source driving method comprises steps of:

• receiving a switching signal and a current control signal from the controller;
• generating a frequency setting signal, via a frequency setting module, according to the switching signal from the controller;
• generating a light source driving signal, via a driving circuit, according to the switching signal and the current control signal from the controller;
• and
• selectively generating a driving current flowing through the light source, via a conversion module, in response to the light source driving signal, wherein
• the driving current increases continuously during a rising period, and the light source driving signal has a first operating frequency during the rising period, and
• the driving current remains unchanged during a stable period, and the light source driving signal has a second operating frequency during the stable period.