US 11,844,158 B2
System for single channel based multi-function LED lamp drive
Choong Seob Park, Suwon-si (KR); So Jeong Kang, Seoul (KR); Jin Hyun Kim, Suwon-si (KR); Seok Hyun Hwang, Gyeongsan-si (KR); Ga Hee Lee, Gyeongsan-si (KR); and Chul Sung Lee, Gyeongsan-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and SL CORPORATION, Daegi (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); Kia Corporation, Seoul (KR); and SL Corporation, Daegu (KR)
Filed on Nov. 18, 2021, as Appl. No. 17/529,699.
Claims priority of application No. 10-2021-0111778 (KR), filed on Aug. 24, 2021.
Prior Publication US 2023/0072464 A1, Mar. 9, 2023
Int. Cl. H05B 45/37 (2020.01); H05B 45/14 (2020.01); B60Q 1/14 (2006.01); H05B 47/105 (2020.01)
CPC H05B 45/37 (2020.01) [B60Q 1/1423 (2013.01); H05B 45/14 (2020.01); H05B 47/105 (2020.01); B60Q 2400/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A multi-functional light emitting diode (LED) lamp driving system comprising:
a first light source group and a second light source group distinguished for each lamp function thereof;
a single light-emitting diode (LED) lamp driving module configured to adjust an input voltage to a voltage required for each lamp function of the first light source group and the second light source group and to apply the input voltage to the first light source group and the second light source group;
a switching module configured to control on or off of the first light source group and the second light source group; and
a control module configured to control light amounts of the first light source group and the second light source group by performing time-division control on an on or off time of the switching module in conjunction with the LED lamp driving module,
wherein the control module is configured to perform time division turn-on control on the first light source group and the second light source group by controlling at least one of a current value applied to the first light source group and the second light source group or a duty ratio of the first light source group and the second light source group in a high-beam passing mode in which a high-beam signal is inputted in a state where a daytime running lamp by the second light source group is turned on during a daytime,
wherein the control module is further configured:
to perform turn-on control on the second light source group at a first duty ratio in a daytime mode,
to perform turn-on control on the first light source group at a second duty ratio which is smaller than the first duty ratio in a night mode, and
to perform turn-on control on the second light source group at a third duty ratio which is equal to or smaller than a value obtained by subtracting the second duty ratio from the first duty ratio.