Driving circuit with dimming controller for driving light sources

A system comprising:

• a power converter coupled between a power source and a light emitting diode (LED) light source and for receiving power from said power source and for providing regulated power to said LED light source;
• and
• a dimming controller coupled to said power converter for receiving a switch monitoring signal indicative of an operation of a power switch coupled to said power source and for adjusting said regulated power from said power converter according to said switch monitoring signal, wherein said dimming controller comprises a counter for counting said operation of said power switch, wherein said dimming controller comprises:
• a trigger monitoring unit for receiving said switch monitoring signal and for generating a driving signal in response to said operation of said power switch;
• and
• a dimmer coupled to said trigger monitoring unit and for receiving said driving signal and for generating a dimming signal to adjust a target power level of said power converter.

A dimming controller coupled to a light emitting diode (LED) light source, comprising:

• a switch monitoring terminal operable for monitoring an operation of a power switch coupled between a power source and said LED light source;
• a counter coupled to said switch monitoring terminal operable for counting said operation of said power switch;
• a current monitoring terminal operable for receiving a current monitoring signal indicating a current flowing through said LED light source;
• a selection terminal operable for selecting a mode from a burst dimming mode and an analog dimming mode for said dimming controller;
• and
• a control terminal operable for generating a control signal to control a second switch in series with said LED light source to adjust power to said LED light source based on a counter value of said counter and said current monitoring signal.