Turn-on procedure for a load control device

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

• determining, by LED driver control circuitry, a threshold voltage for one or more LED emitters having a defined load voltage coupled to LED drive circuitry;
• controlling, by the LED driver control circuitry using open-loop control, operatively coupled power converter circuitry to charge a bus capacitor to the determined threshold voltage over a pre-load charge time;
• controlling, by the LED driver control circuitry using closed-loop control, the power supply circuitry to charge the bus capacitor to the defined load voltage over a delay time;
• and
• causing, by the LED driver control circuitry, the LED drive circuitry to illuminate the one or more LED emitters at the defined load voltage after the expiration of the delay time.

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

• determine a threshold voltage for one or more LED emitters;
• wherein the one or more LED emitters are driven using LED driver circuitry operatively coupled to the LED driver control circuitry;
• and
• wherein the one or more LED emitters have associated therewith a defined operating load voltage;
• cause operatively coupled power converter circuitry operatively coupled to the LED driver control circuitry to charge a bus capacitor to the determined threshold voltage over a pre-load charge time using open-loop control;
• wherein the bus capacitor is conductively coupled across an output of the power converter circuitry;
• cause power supply circuitry to charge the bus capacitor to the defined operating load voltage of the one or more LED emitters over a delay time using closed-loop control;
• and
• cause the LED drive circuitry to illuminate the one or more LED emitters at the defined operating load voltage after the expiration of the delay time.