DIMMING CONTROL CIRCUIT, DIMMING CONTROL METHOD, AND LED DRIVER CIRCUIT

• Main Authors: LIU, Bairen, BAI, Lang, CAO, Feng, WANG, Shuguang
• Format: Patent
• Language: English
• Published: 28.09.2023
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The application discloses a dimming control circuit, a dimming control method, and a LED driver circuit. The dimming control circuit comprises a logic signal generation circuit and a feedback signal generation circuit. wherein the logic signal generation circuit is configured to compare the sampling signals with a first threshold signal and a second threshold signal respectively to obtain a first group of logic signals and a second group of logic signals. Wherein the feedback signal generation circuit is coupled to the logic signal generation circuit, which is configured to generate feedback signals to reduce energy output when each of the sampling signals is greater than the first threshold signal, and configured to generate feedback signals to increase the energy output when any one of the sampling signals is smaller than the second threshold signal. A dimming control circuit, a dimming control method, and a LED driver circuit provided by the present application, which can make the front-end circuit provide the adaptive control of the output voltage, so as to match the light voltage from different LED loads, leading the system efficiency highly.