Patent ID: 11943853
Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. The light emitting diode driving circuit of claim 13, wherein the main sampling circuit comprises:
a first switch, wherein the main sampling circuit is configured to output the first sampling signal at a first terminal of the first switch;
a first resistor coupled between a first terminal of the sampling resistor and a second terminal of the first switch; and
a second resistor coupled between a second terminal of the sampling resistor and a gate terminal of the first switch, and
the processing circuit comprises a first operational amplifier, wherein a first input terminal of the first operational amplifier is configured to receive the first sampling signal, a second input terminal of the first operational amplifier is configured to receive the second sampling signal and is coupled to an output terminal of the first operational amplifier.