A dynamic compensation control circuit for synchronous Rectifier power converter

• Main Authors: HE LENIAN, ZHU QINWEI, XI JIANXIONG, GU DONGLIE, LENG YAHUI, HUANG FEIMING
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2018
• 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 utility model discloses a dynamic compensation control circuit for synchronous Rectifier power converter, include zero balancing module, dynamic compensation module and synchronous Rectifier logiccontrol module. The utility model discloses control circuit brought to confirm whether there is the circumstances of turn -offing in advance through descending of detection switch node, and the inputoffset voltage of zero comparator is crossed in the dynamic adjustment according to the testing result, and realizes accurate synchronous Rectifier control, when guaranteeing the control and detection function, had improved the precision of synchronous Rectifier pipe bars pole control signal, had simple structure, easily realized, and was with low costs, advantage that the precision is high. Simultaneously, the utility model discloses control circuit can compensate the input offset voltage of zero comparator itself and the loop of synchronous Rectifier control logic and comparator introduction postpones, has further i