CONTROL CIRCUIT FOR A BOOST CONVERTER IN DCM

• Main Authors: SEGUNDO BABARRO, Jokin, KRABBENBORG, Bernardus Henricus, BERKHOUT, Marco
• Format: Patent
• Language: English; French; German
• Published: 21.06.2023
• 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; ELECTRICITY; GENERATION

A control circuit for a boost converter wherein the control circuit comprises switching means configured to switch the boost converter to perform cycles wherein each cycle comprises 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, comparison means configured to decide whether a frequency of a switching event is lower than a predetermined minimum frequency and on-time signal generation means configured to generate an on-time signal based on whether a frequency of a switching event is lower than a predetermined minimum frequency, wherein the on-time signal determines a duration of a charging state of a next switching event and wherein the switching means is configured to switch the boost converter based on the generated on-time signal.