Compensation circuit capable of automatically adjusting internal ripple based on output voltage and electronic chip

• Main Author: NIU HAILING
• Format: Patent
• Language: Chinese; English
• Published: 28.02.2023
• 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

The invention discloses a compensation circuit and an electronic chip for automatically adjusting internal ripples based on output voltage, and the compensation circuit comprises a compensation ripple voltage generation unit which is used for generating a ripple voltage which is the same as an inductive current in phase and is proportional to the inductive current in amplitude; the equivalent FB voltage translation unit is used for shifting the equivalent FB voltage to a second node through a level; the coupling unit is used for coupling and superposing the ripple voltage to the second node; the reference voltage translation unit is used for shifting the reference voltage to a third node through the level; the pulse width modulation unit is used for outputting a pulse width modulation signal according to the input of the second node and the third node; and the ripple voltage adjusting unit is used for automatically adjusting the magnitude of the ripple voltage generated by the compensation ripple voltage gene