Patent ID: 11930571
Assignee: ALEDDRA INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A light-emitting diode (LED) luminaire phase-dimming driver, comprising:
two electrical conductors configured to receive an input voltage, which is either a phase-cut mains voltage from an external phase-dimming controller or a line voltage from alternate-current (AC) mains when the external phase-dimming controller is not present;
at least one full-wave rectifier coupled to the two electrical conductors and configured to convert the input voltage into a non-regulated direct-current (DC) voltage;
a first power supply circuit coupled to the at least one full-wave rectifier and configured to convert the non-regulated DC voltage into a first regulated DC voltage and an intermediate voltage;
a second power supply circuit comprising a first ground reference and a first converter circuit configured to convert the first regulated DC voltage into an output DC voltage with a regulated output current in response to a phase-dimming signal abstracted from the non-regulated DC voltage;
an interface control circuit comprising a relay switch comprising a coil, the relay switch configured to relay either the intermediate voltage or the output DC voltage to an external LED luminaire to operate thereof; and
a latching and holding current sustainable circuit configured to compensate for a minimum current to operate the external phase-dimming controller, thereby eliminating a misfire from the external phase-dimming controller to cut a power to the first power supply circuit,
wherein:
the relay switch further comprises a first pair of input electrical terminals, a second pair of input electrical terminals, a third pair of input electrical terminals, and a pair of output electrical terminals;
the third pair of input electrical terminals are configured to receive a pick-up voltage to operate the coil;
the first pair of input electrical terminals are configured to receive the intermediate voltage;
the second pair of input electrical terminals are configured to receive the output DC voltage; and
the relay switch, when enabled, is further configured to relay the output DC voltage to the pair of output electrical terminals and to operate the external LED luminaire in response to the phase-dimming signal.