Differential driving circuit for powering a light source

A driving system for powering a light emitting diode (LED) light source, said driving system comprising:

• a first switch coupled between a power source and a first terminal of a first energy storage element;
• a second switch coupled between a second terminal of said first energy storage element and a reference;
• a third switch coupled between said first terminal of said first energy storage element and a first terminal of said LED light source;
• and
• a fourth switch coupled between said second terminal of said first energy storage element and a second terminal of said LED light source,
• wherein conductance statuses of said first switch, said second switch, said third switch, and said fourth switch are controlled to regulate power to said LED light source, wherein conductance statuses of said first switch and said second switch are controlled by a first signal, and wherein conductance statuses of said third switch and said fourth switch are controlled by a second signal.