US 12,016,096 B2
Controllable-load circuit for use with a load control device
Christopher J. Salvestrini, Allentown, PA (US); Ryan S. Bedell, Breinigsville, PA (US); and Matthew V. Harte, Breinigsville, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Jul. 7, 2023, as Appl. No. 18/348,670.
Application 18/348,670 is a continuation of application No. 16/889,720, filed on Jun. 1, 2020, granted, now 11,743,983.
Application 16/889,720 is a continuation of application No. 15/385,108, filed on Dec. 20, 2016, granted, now 10,674,583, issued on Jun. 2, 2020.
Application 15/385,108 is a continuation of application No. 14/939,457, filed on Nov. 12, 2015, granted, now 9,578,700, issued on Feb. 21, 2017.
Application 14/939,457 is a continuation of application No. 12/950,079, filed on Nov. 19, 2010, granted, now 9,220,133, issued on Dec. 22, 2015.
Claims priority of provisional application 61/263,204, filed on Nov. 20, 2009.
Prior Publication US 2023/0354488 A1, Nov. 2, 2023
Int. Cl. H05B 45/14 (2020.01); H02M 1/08 (2006.01); H02M 5/257 (2006.01); H05B 45/10 (2020.01); H05B 45/3725 (2020.01); H05B 45/44 (2020.01); H05B 47/175 (2020.01)
CPC H05B 45/14 (2020.01) [H02M 1/082 (2013.01); H02M 5/2576 (2013.01); H05B 45/10 (2020.01); H05B 45/3725 (2020.01); H05B 45/44 (2020.01); H05B 47/175 (2020.01)] 12 Claims
OG exemplary drawing
 
1. A light-emitting diode (LED) drive system, comprising:
input terminals to receive a phase-control voltage from a dimmer switch;
output terminals to provide an output voltage;
an LED drive control circuit to determine whether the received phase-control voltage comprises a forward phase-control waveform or a reverse phase-control waveform; and
a selectively enablable controllable-load circuit conductively coupled in parallel with an LED lighting load coupled to the output terminals and communicatively coupled to the LED drive control circuit, the controllable-load circuit to permit a controllable-load current to flow through the dimmer switch when enabled;
wherein, responsive to the determination that the phase-control voltage is a forward phase-control waveform, the LED drive control circuit to:
enable the controllable-load circuit; and
adjust a magnitude of the controllable-load current through the dimmer switch such that the controllable-load current exceeds at least one of:
a rated latching current of the dimmer switch; or
a rated holding current of the dimmer switch.