Ultra-efficient dimmable led driver with switchable led load

A lighting apparatus comprising:

• a light source having an input and an output and a parallel or a series configuration of a first sub-load and a second sub-load coupled between the input and the output;
• a first driver adapted to provide power to the input of the light source;
• a second driver adapted to provide power to the input of the light source;
• a controller adapted to receive a dimming signal and adapted to allow or deny a power to be provided by the first driver and/or the second driver to the light source based on the dimming level;
• and
• a control circuit adapted to receive a control signal, wherein the control circuit is arranged to activate and deactivate the first sub-load and the second sub-load based on the control signal.