一种多输入高压电源选择电路
By using a multi-input high-voltage power supply selection circuit, and by selecting and generating a low-voltage signal using a power supply selection circuit and a low-voltage conversion circuit, the problems of complex power supply systems and untimely switching in multi-input source integrated circuits are solved, achieving stable and reliable internal power supply and low power consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SG MICRO CORP
- Filing Date
- 2021-09-15
- Publication Date
- 2026-07-17
AI Technical Summary
In multi-input source integrated circuits, the presence of multiple high-voltage input sources and high-voltage to low-voltage conversion units in the existing technology leads to complex internal power supply systems, large areas, high power consumption, and the potential for power failure and restart due to untimely switching.
A multi-input high-voltage power supply selection circuit is adopted, including a power supply selection circuit and a low-voltage conversion circuit. The high-voltage power supply is selected and a low-voltage signal is generated through multiple overshoot voltage regulation units, eliminating the need for a high-voltage to low-voltage unit and a complex low-voltage selection circuit, thus enabling free selection among multiple input sources.
It achieves stable internal power supply, reduces circuit area and power consumption, avoids chip power failure and restart due to untimely power switching, and makes the circuit structure more reasonable and reliable.
Smart Images
Figure CN115811037B_ABST