Load Control Device for a Light-Emitting Diode Light Source

A light-emitting diode (LED) driver control method, comprising:

• controlling by LED driver control circuitry, a bus voltage provided to LED driver circuitry;
• receiving by the LED driver control circuitry, an input indicative of a target intensity;
• determining by the LED driver control circuitry, whether the target intensity is less than or equal to a defined low-end trim setting;
• controlling by the LED driver control circuitry, the load current output of the LED driver circuitry using a first modulation technique responsive to the determination that the target intensity is less than or equal to the low-end trim setting;
• and
• controlling by the LED driver control circuitry, the load current output of the LED driver circuitry using a second modulation technique different from the first modulation technique responsive to the determination that the target intensity is greater than the low-end trim setting.

A non-transitory, machine-readable, storage device that includes instructions that, when executed by LED driver control circuitry, cause the LED driver control circuitry to:

• control a bus voltage provided to LED driver circuitry;
• receive an input indicative of a target intensity;
• determine whether the target intensity is less than or equal to a defined low-end trim setting;
• control the load current output of the LED driver circuitry using a first modulation technique responsive to the determination that the target intensity is less than or equal to the low-end trim setting;
• and
• control the load current output of the LED driver circuitry using a second modulation technique different from the first modulation technique responsive to the determination that the target intensity is greater than the low-end trim setting.