US Patent No. 10,694,602

RIPPLE SUPPRESSOR


Patent No. 10,694,602
Issue Date June 23, 2020
Title Ripple Suppressor
Inventorship Hung-Ching Lee, Hsinchu County (TW)
Ruei-Jhih Jheng, Hsinchu County (TW)
Chun-Hsin Li, Hsinchu County (TW)
Assignee Leadtrend Technology Corp., Hsinchu County (TW)

Claim of US Patent No. 10,694,602

1. A ripple suppressor, comprising:a constant current generation circuit coupled to a light-emitting diode chain for generating a detection voltage, and generating a constant current to the light-emitting diode chain; and
a voltage regulation circuit coupled to the light-emitting diode chain and the constant current generation circuit for making the constant current generation circuit generate the constant current according to the detection voltage and a compensation value, or making the constant current generation circuit generate the constant current according to the detection voltage, wherein the compensation value is changed with an average voltage generated by the voltage regulation circuit, and the average voltage corresponds to a voltage of an end of the light-emitting diode chain.