Patent ID: 7633463

Claim:
An adaptive boost converter adapted for supplying electrical current to a number of series connected RGB LEDs for energizing the operation thereof, the series connected RGB LEDs being connectible in series with a current generator, the adaptive boost converter comprising: a. a power input terminal for receiving electrical power from an energy source; b. a plurality of LED switches equal in number to the number of series connected RGB LEDs, each LED switch: i. being connectible across one of the RGB LEDs; and ii. operating responsive to a binary digital switching signal so that the LED switch: 1) when open permits electrical current to flow through the RGB LED across which the LED switch is connectible; and 2) when closed shorts across and thereby shunts current around the RGB LED across which the LED switch is connectible; c. a comparator connectible to the current generator for sensing voltage across the current generator; and d. a voltage boosting circuit for increasing voltage of electrical power received from the energy source to a higher voltage to be applied across series connectible RGB LEDs and series connectible current generator, the voltage applied across series connected RGB LEDs and series connectible current generator varying responsive to an output signal produced by the comparator; whereby the voltage appliable across series connectible RGB LEDs and series connectible current generator is only that required by those series connectible RGB LEDs whose operation is then being energized by the adaptive boost converter plus a bias voltage required to ensure proper operation of the current generator.