US 12,439,490 B2
Driver for driving a load, such as a LED load
Yu Wang, Shanghai (CN); Jie Fu, Shanghai (CN); Zhiquan Chen, Shanghai (CN); and Gang Wang, Shanghai (CN)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 18/563,444
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed May 19, 2022, PCT No. PCT/EP2022/063567
§ 371(c)(1), (2) Date Nov. 22, 2023,
PCT Pub. No. WO2022/248329, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. PCT/CN2021/096800 (WO), filed on May 28, 2021; and application No. 21195269 (EP), filed on Sep. 7, 2021.
Prior Publication US 2024/0276611 A1, Aug. 15, 2024
Int. Cl. H05B 45/355 (2020.01); H02M 1/00 (2006.01); H02M 1/15 (2006.01); H02M 1/42 (2007.01); H05B 45/36 (2020.01); H05B 45/3725 (2020.01)
CPC H05B 45/355 (2020.01) [H02M 1/0043 (2021.05); H02M 1/15 (2013.01); H02M 1/4225 (2013.01); H05B 45/36 (2020.01); H05B 45/3725 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A driving arrangement for driving a load, comprising:
a driver input for receiving an input power;
a driver output to be coupled to the load;
a high frequency switch mode PFC converter adapted to convert the input power to a PFC converter power at a PFC output;
a high frequency switch mode regulator with a regulator output which is connected in series with the PFC output, wherein the regulator is adapted to provide a regulated power to be superimposed with the PFC converter power to provide a superimposed power which is applied across the driver output,
wherein the high frequency switching of the PFC converter and the regulator are synchronized, the PFC converter is adapted to, in terms of the high frequency switching, increase the PFC converter power in a rising portion of the PFC converter power and decreases the PFC converter power in a falling portion of the PFC converter power wherein the rising portion is a freewheeling phase and the falling portion is a charging phase, and the regulator is adapted to, in terms of the high frequency switching, increase the regulated power in a rising portion of the regulated power and decrease the regulated power in a falling portion of the regulated power, and
the falling portion of the PFC converter power at least partially overlaps with the rising portion of the regulated power and/or the rising portion of the PFC converter power at least partially overlaps with the falling portion of the regulated power.