Power converter with low-power-consumption upper bridge driving mechanism

• Main Authors: YAN ZIYANG, HUANG PINGYU
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• 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 power converter with a low-power-consumption upper bridge driving mechanism. The first end of the upper bridge switch is coupled to an input voltage. The first end of the lower bridge switch is connected with the second end of the upper bridge switch. The second end of the lower bridge switch is grounded. The first end of the bootstrap capacitor is connected with a node between the second end of the upper bridge switch and the first end of the lower bridge switch. The second end of the bootstrap capacitor is connected with the charging circuit. The charging circuit charges the bootstrap capacitor, detects data of the bootstrap capacitor, and determines whether to adjust or stop charging the bootstrap capacitor according to the detected data of the bootstrap capacitor. 本发明公开一种具有低功耗上桥驱动机制的电源转换器。上桥开关的第一端耦接输入电压。下桥开关的第一端连接上桥开关的第二端。下桥开关的第二端接地。自举电容的第一端连接上桥开关的第二端和下桥开关的第一端之间的节点。自举电容的第二端连接充电电路。充电电路对自举电容对进行充电，并检测自举电容的数据，依据检测到的自举电容的数据，以决定是否调整或停止对自举电容的充电。