Driving circuit with continuous dimming function for driving light sources

A system comprising:

• a power converter coupled to a power source and a light emitting diode (LED) light source and for receiving power from said power source, and for providing output power to said LED light source;
• and
• a dimming controller coupled to said power converter and for monitoring a power switch coupled to said power source, and for continuously adjusting said power from said power converter upon detection of a first plurality of operations of said power switch until a second plurality of operations of said power switch are detected, said dimming controller comprising:
• a clock generator for generating a clock signal upon detection of said first plurality of operations of said power switch;
• and
• a counter driven by said clock signal for providing a counter value to adjust said output power from said power converter.

A method for controlling dimming of a light emitting diode (LED) light source, said method comprising:

• powering said LED light source based on output power from a power converter;
• receiving a dimming request signal indicative of a first plurality of operations of a power switch coupled between a power source and said power converter;
• and
• adjusting said output power from said power converter in response to said dimming request signal until a dimming termination signal indicative of a second plurality of operations of said power switch is received,
• wherein adjusting said output power further comprises:
• driving a counter based on a clock signal;
• generating a dimming signal based on a counter value of said counter;
• and
• controlling a control switch coupled in series with said LED light source based on said dimming signal to adjust said output power.