Automatic switching control circuit for main power supply and backup power supply

• Main Authors: SONG JIANHU, GAO JIANHAI, LI CONGCONG, ZHANG YU, GENG DAXIAO
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses an automatic switching control circuit for a main power supply and a backup power supply, and belongs to the technical field of aerospace power supply control. Comprising a filter circuit, a power supply isolation circuit, a main switching circuit and a backup switching circuit, the filter circuit is used for filtering high-frequency interference between a primary power supply bus and an electric module source; the input end of the filter circuit is connected with a satellite platform primary power supply bus; the module power supply main part and the module power supply backup part are connected in parallel; the input end of the module power backup is connected with the output end of the filter circuit, and the output end is connected with the input end of the power isolation circuit through a diode D21; the module power backup and the module power master are connected in parallel; the module power supply main part and the module power supply backup part are both used for realizing vo