Patent ID: 8791647

Claim:
A method for controlling a switching power converter powering one or more LED strings, the method comprising: receiving, during a first switching cycle of the switching power converter, an updated brightness setting for controlling brightness of the one or more LED strings during a second switching cycle of the switching power converter subsequent to the first switching cycle, the updated brightness setting different from a present brightness setting controlling the brightness of the one or more LED strings during the first switching cycle; generating based on the updated brightness setting, during the first switching cycle of the switching power converter, a predicted load signal representing a predicted load of the one or more LED strings during the second switching cycle of the switching power converter; determining a duty cycle for driving the switching power converter during the second switching cycle based on the predicted load signal received during the first switching cycle; and controlling the switching power converter during the second switching cycle using the determined duty cycle to generate an output voltage powering the one or more LED strings.