US 11,743,990 B2
Balance control for 2-channel CCT dimming
Theo Gerrit Zijlman, Tilburg (NL); Eugen Jacob De Mol, Eindhoven (NL); Henricus Marius Joseph Maria Kahlman, Dongen (NL); Zhaomin Meng, Shanghai (CN); Dmytro Viktorovych Malyna, Achel (BE); Marcel Beij, Sint Oedenrode (NL); and Franciscus Jacobus Vossen, Helmond (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/628,090
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Jul. 16, 2020, PCT No. PCT/EP2020/070104
§ 371(c)(1), (2) Date Jan. 18, 2022,
PCT Pub. No. WO2021/013677, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 19187326 (EP), filed on Jul. 19, 2019.
Prior Publication US 2022/0279636 A1, Sep. 1, 2022
Int. Cl. H05B 45/3725 (2020.01); H05B 45/34 (2020.01); H05B 47/155 (2020.01); H05B 45/24 (2020.01)
CPC H05B 45/3725 (2020.01) [H05B 45/24 (2020.01); H05B 45/34 (2020.01); H05B 47/155 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A lighting system comprising:
a load comprising:
a parallel configuration of:
a first LED load having a first forward voltage, and a first switch coupled in series with the first LED load; and
a second LED load, having a second forward voltage being different than the first forward voltage;
a switched mode power supply comprising:
a switching element;
an inductor;
a diode;
a set of output pins for coupling to the load; and
a capacitor coupled across the set of output pins;
wherein the switched mode power supply is arranged to provide a voltage across the set of output pins,
a further inductor configured to receive the voltage from the set of output pins and to output a current to both the first and second LED load.