CURRENT LIMIT CONTROL CIRCUIT FOR BOOST CONVERTER IN CCM

• Main Author: KRABBENBORG, Bernardus Henricus
• Format: Patent
• Language: English
• Published: 19.09.2024
• 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; ELECTRICITY; GENERATION

A control circuit for a boost converter is provided. The control circuit includes switching means configured to switch the boost converter to perform cycles. Each cycle includes an energy charging state, in which an inductor stores energy provided by an input voltage, and an energy discharging state, in which the inductor provides energy to an output of the boost converter. The control circuit further includes comparison means configured to decide whether a current at the inductor is higher than a predetermined maximum current. The control circuit further includes off-time signal generation means configured to generate an off-time signal based on whether the current at the inductor is higher than a predetermined maximum current. The off-time signal determines a duration of a discharging state of a next switching event and the switching means is configured to switch the boost converter based on the generated off-time signal.