Patent ID: 11956867
Assignee: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. A method for providing at least an output current to one or more light emitting diodes, the method comprising:
receiving at least a sensed signal and a predetermined voltage signal;
generating a current signal based on at least information associated with the sensed signal and the predetermined voltage signal;
processing information associated with the current signal;
generating a comparison signal based on at least information associated with a voltage signal and a ramping signal, the voltage signal generated by at least a capacitor;
generating a modulation signal based on at least information associated with the comparison signal;
receiving the modulation signal; and
outputting a drive signal based on at least information associated with the modulation signal to a switch;
wherein:
the drive signal is associated with at least one or more switching periods of the switch, each switch period of the one or more switching periods including at least an on-time period;
the receiving at least a sensed signal and a predetermined voltage signal includes, for each switch period of the one or more switching periods, receiving the predetermined voltage signal only during the on-time period; and
the processing information associated with the current signal includes charging or discharging the capacitor with the current signal.