一种直流DC-DC转换器及其控制方法
By employing an input voltage sampling unit and relay control in the DC-DC converter, the number of switching transistors is reduced and the control method is simplified, solving the problems of high heat loss of switching transistors and complex control in the prior art, and improving the reliability and efficiency of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA SATELLITE NETWORK EXPLORATION CO LTD
- Filing Date
- 2022-10-14
- Publication Date
- 2026-07-17
AI Technical Summary
In existing DC-DC converters, the buck-boost regulation circuit suffers from problems such as high heat loss of the switching transistors and complex control. In particular, the four-switch control circuit has a large number of switching transistors, and one of them is always in the conducting state, which makes it easy to be damaged and the control strategy is complicated.
The system employs an input voltage sampling unit, a switching unit, and a controller. By controlling two switching transistors in the switching unit and the power conversion unit, it achieves switching between boost, buck, or regulated modes. Mode control is performed using relays or four-on-four-off relays, reducing the number of switching transistors and heat loss, and simplifying the control method.
It reduces the heat loss of the switching transistor, simplifies the control strategy, improves the reliability and efficiency of the system, and enhances the circuit's fault protection capability.
Smart Images
Figure CN115566900B_ABST