Patent ID: 8624511

Claim:
A method to optimize efficiency of a LED driver, comprising the following steps: (1) providing a device comprising an arrangement of one or more LEDs in series, a programmable iDAC current source, and a boost converter comprising a size programmable power switch, a PWM generator with programmable clock frequency, and a programmable reference voltage generator for an error amplifier stage; (2) identifying a number of configuration windows specifying configuration of the LED driver and mode of modulation, wherein the configuration windows and modulation mode depend on current iDAC required through the LED arrangement; (3) defining clock frequency, size of power switch and said programmable reference voltage once the current iDAC is known; (4) storing characteristics of all configuration windows selected; and (5) implementing configuration of a specific LED driver for a specific LED arrangement according to the corresponding configuration window providing optimum efficiency in regard of correspondent characteristics.