Multi-Power Supply Sequence Control for Voltage Stability
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Solution Overview
Problem
In circuits supplied with multiple external power sources, if one power source fails, the entire circuit is rendered unusable, as there is no mechanism to stabilize the internal voltage from the remaining power source.
Innovation Solution
A multi-power supply device with a regulator, switch, and sensing circuit that selects and stabilizes the internal voltage from either of the external power sources, ensuring continuous operation by monitoring the second voltage and switching to the first voltage when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a circuit uses multiple external power sources, then the power supply capacity is increased, but the reliability deteriorates because if one power source fails, the entire circuit cannot be used
Solution Approach 1:
The patent changes the operational state parameters of the power supply system by introducing voltage level detection and sequence control. The system monitors the voltage level of the second power source and dynamically adjusts which power source supplies power to the internal block, transitioning from a static multi-power configuration to a dynamically controlled one that maintains reliability while preserving power supply capacity.
Solution Approach 2:
The patent introduces a sensing circuit and control logic as intermediary elements between the external power sources and the internal block. This intermediary layer detects voltage levels and controls the power supply sequence, preventing direct conflicts between power sources and ensuring that the internal block receives stable power from a valid source, thus resolving the reliability issue while maintaining multiple power source capability.
2Power
If a circuit uses multiple external power sources, then the power supply capacity is increased, but the device complexity increases due to the need for sequence control
Solution Approach 1:
The sensing circuit automatically monitors the voltage level of the second power source and triggers the appropriate power supply sequence without external intervention. The system serves itself by detecting power source status and autonomously switching between power sources, reducing the need for complex external control mechanisms while maintaining multiple power source capability.
Solution Approach 2:
The patent implements preliminary voltage level detection before power supply activation. The sensing circuit checks the voltage level of the second power source in advance and pre-determines the appropriate power supply sequence, preventing potential power conflicts before they occur and simplifying the overall control logic by establishing clear operational priorities beforehand.
Data Source
AI summary
The present invention relates to a multi-power supply device capable of controlling a sequence, and more particularly, to a multi-power supply device capable of controlling a sequence for a circuit in which two or more power sources are supplied from the outside and when one of the power sources has a problem so that the power is not supplied to an internal block, an internal voltage is stably supplied from another power source.