Control circuit, corresponding electronic converter device and method

• Main Authors: CATTANI ALBERTO, RAMORINI STEFANO, BERTOLINI ALBERTO, GASPARINI ALESSANDRO
• Format: Patent
• Language: Chinese; English
• Published: 26.08.2022
• 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

The embodiment of the invention relates to a control circuit, a corresponding electronic converter device and a method. The control circuit operates to control the switching stage of the electronic converter. The control circuit includes: a first terminal providing a drive signal to the electronic switch of the switching stage; a second terminal receiving a first feedback signal proportional to the converter output voltage from the feedback circuit; and a third terminal configured to receive a second feedback signal from the current sensor proportional to the inductor current. The driver circuit provides a drive signal according to a PWM signal generated by the generator circuit, the PWM signal according to the first and second feedback signals, a reference voltage, and a slope compensation signal. The mode selection signal is generated according to a comparison between an input voltage and an output voltage. The feed-forward compensation circuit is configured to provide and/or absorb a compensation current a