Patent ID: 11864291
Assignee: INVENTRONICS (HANGZHOU), INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. The LED control circuit according to claim 1, wherein
the control IC unit comprises a comparator, a second current loop, and a driving control subunit;
the comparator is configured to compare the direct current voltage with the predetermined voltage to obtain a target level signal, and transmit the target level signal to the driving control subunit;
the second current loop is configured to input a target feedback signal to the driving control subunit based on the target current and a predetermined current; and
the driving control subunit is configured to output a target driving signal based on the target level signal and the target feedback signal, output the target driving signal to the switch tube to control the BUCK circuit to operate or not to operate, and output the constant current.