LED driving circuit and LED driving device

• Main Authors: LIN XINGYU, CHEN CHAOJUN, LIN JIREN, YE MEIPAN
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The utility model provides an LED driving circuit and an LED driving device. The LED driving circuit comprises a detection end; a driving end; a ground terminal; the output detection module is connected between the detection end and the grounding end, collects the voltage of the detection end, generates an analog voltage according to the collected voltage and the driving signal received by the driving end, and generates an overvoltage detection signal according to a comparison result of the analog voltage and the reference voltage, and the analog voltage represents the output voltage of the LED driving device; and the driving module generates a first driving signal according to the overvoltage detection signal in the effective state and outputs the first driving signal to a driving end, and the first driving signal is an ineffective state signal. Wherein the effective state of the overvoltage detection signal indicates that the output voltage of the LED driving device is overvoltage, and correspondingly, the