US 12,457,671 B1
Driver and luminaire having a single power input terminal and wide input voltage range
Wei Xiong, Madison, AL (US); and Robert C Sorensen, Bedford Park, IL (US)
Assigned to Litetronics International, Inc., Bedford Park, IL (US)
Filed by Litetronics International, Inc., Bedford Park, IL (US)
Filed on Jan. 8, 2025, as Appl. No. 19/014,121.
Application 19/014,121 is a continuation in part of application No. 18/734,112, filed on Jun. 5, 2024.
Int. Cl. H05B 45/355 (2020.01); H05B 45/36 (2020.01); H05B 45/3725 (2020.01)
CPC H05B 45/355 (2020.01) [H05B 45/36 (2020.01); H05B 45/3725 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A luminaire comprising:
a driver;
at least one LED in electrical connection with the driver,
the driver has a single power input terminal and wide input voltage range;
wherein the wide input voltage range of the driver is between about 100V and 528V;
the driver is configured to supply power to the at least one LED at a substantially constant current or at a substantially constant voltage;
wherein the driver comprises:
an output current regulation circuit configured to control an output current to match a control signal, DIM_command;
a power factor correction (PFC) control circuit having a digital compensation block, a PFC controller, and a gate drive IC;
wherein the PFC control circuit is configured and disposed to force an input AC current to track an input voltage waveform and to sense a rectified input voltage from a full-wave rectifier, MULT_in, and process it in a digital core of an uC, and output a new compensated MULT signal, MULT_out, for the PFC controller; and
a passive voltage multiplier circuit disposed between the full-wave rectifier and an input of the PFC controller and configured to sense the input voltage waveform.