Charge pump voltage detection circuit and method

• Main Authors: WANG QIFANG, CHEN PENG
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• 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; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention provides a charge pump voltage detection circuit and method. The charge pump voltage detection circuit comprises a resistance voltage division detection circuit, a capacitance coupling detection circuit and a logic control circuit, wherein the resistance voltage division detection circuit is connected with the output end of the charge pump through the first switching circuit, the capacitance coupling detection circuit is coupled to the output end of the charge pump, and the logic control circuit is connected with the resistance voltage division detection circuit, the capacitance coupling detection circuit and the charge pump. And the control circuit is used for respectively controlling the on and off of the resistance voltage division detection circuit, the capacitance coupling detection circuit and the charge pump, the capacitance coupling detection circuit is closed when the resistance voltage division detection circuit is on, and the capacitance coupling detection circuit is on when the resis