Load control device for a light-emitting diode light source

A load control method to control an amount of power delivered to light-emitting diode (LED) lighting load, the method comprising:

• causing, by an LED lighting controller, an inverter circuit included in a load regulation circuit operatively coupled to the LED lighting controller to transition between:
• an active state period during which the inverter circuit is active;
• and
• an inactive state period during which the inverter circuit is inactive;
• receiving, by the LED lighting controller, a target intensity input indicative of a target intensity of an operatively coupled LED lighting load;
• determining, by the LED lighting controller, a target load current based on the received target intensity input;
• determining, by the LED lighting controller, whether the target load current is at or below a threshold load current;
• and
• responsive to the determination that the target load current is at or below the threshold load current:
• causing, by the LED lighting controller, the load regulation circuit to operate in a burst mode that includes a plurality of burst mode periods, wherein each of the burst mode periods includes at least one active state period and at least one inactive state period;
• and
• adjusting, by the LED lighting controller, a burst duty cycle by varying the duration of the at least one inactive state period while fixing the duration of the at least one active state period.

A non-transitory, machine-readable, storage device that includes instructions that, when executed by an light-emitting diode (LED) lighting controller, cause the LED lighting controller to:

• cause an inverter circuit included in a load regulation circuit operatively coupled to the LED lighting controller to transition between:
• an active state period during which the inverter circuit is active;
• and
• an inactive state period during which the inverter circuit is inactive;
• receive a target intensity input indicative of a target intensity of an operatively coupled LED lighting load;
• determine a target load current based on the received target intensity input;
• determine whether the target load current is at or below a threshold load current;
• and
• responsive to the determination that the target load current is at or below the threshold load current:
• cause the load regulation circuit to operate in a burst mode that includes a plurality of burst mode periods, wherein each of the burst mode periods includes at least one active state period and at least one inactive state period;
• and
• adjust a burst duty cycle by varying the duration of the at least one inactive state period while fixing the duration of the at least one active state period.