Inter-phase current balance control system suitable for hysteresis control of high-frequency double-phase Buck converter

• Main Authors: LIU MENGHAO, LIN XIAOQING, LIU SHENG, WU XIAOBO, ZHAO MENGLIAN
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2021
• 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 an inter-phase current balance control system suitable for hysteresis control of a high-frequency double-phase Buck converter, which is characterized in that each phase is provided with an average inductive current detection module to obtain an average inductive current value, and then the average inductive current value of the two phases is input into a current balance module to obtain inductive current difference value information; according to the inductive current difference information, the duty ratio of the two phases is adjusted in real time through the main comparator 1 and the main comparator 2, and finally the inductive current of the two phases is balanced. According to the control system, the problem of current equalization under the high-frequency condition is solved, the inductive current detection precision is high, the current equalization effect is good, and compared with a traditional digital control method, the energy loss is low, and the occupied area is small. 本发明公