Dual Power Supply Shutdown Circuit for Display Abnormality Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in safely controlling the operation of multiple power supplies when an abnormality occurs in one of the integrated circuits, potentially leading to incorrect image display or burning due to current surges.
Innovation Solution
A power circuit design with dual power supplies that include abnormality detection and reset mechanisms, allowing each power supply to stop its operation and signal abnormalities to the other, ensuring safe operation even if one power supply fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power supplies are used to provide power to the display device, then the power supply capacity and reliability are improved, but the risk of current surges and abnormal operations increases when an abnormality occurs in one of the integrated circuits
Solution Approach 1:
The patent implements a feedback mechanism where each power supply monitors the abnormality signals from other power supplies and adjusts its operation accordingly. When an abnormality is detected in one power supply, the other power supplies receive feedback through their reset input terminals and automatically stop providing power, preventing current surges and harmful effects.
Solution Approach 2:
The patent introduces abnormality signal terminals and reset input terminals as intermediary elements that mediate between the power supplies. These intermediaries transmit abnormality information between different integrated circuits, enabling coordinated shutdown behavior without direct control complexity between power supply units.
2Adaptability or versatility
If multiple integrated circuits are used for power supplies, then the power supply functionality is enhanced, but the control complexity increases when managing abnormality responses across different circuits
Solution Approach 1:
The patent segments the power supply system into independent integrated circuits, each with its own abnormality detection and control logic. This segmentation allows each circuit to operate autonomously while maintaining simple individual control structures, avoiding the need for complex centralized control across multiple circuits.
Solution Approach 2:
The patent implements universal abnormality signal terminals and reset input terminals that serve multiple functions: detecting abnormalities within the same integrated circuit, receiving abnormality signals from other circuits, and controlling the shutdown of multiple power supplies simultaneously. This multi-functionality reduces the need for separate control mechanisms for each circuit.
Data Source
AI summary
A power circuit includes a first power supply including a first power output terminal configured to provide a first power supply voltage, a first abnormal output terminal configured to provide a first abnormal signal based on an abnormality occurring, and a first reset input terminal; and a second power supply including a second power output terminal which outputs a second power supply voltage, a second abnormal output terminal configured to provide a second abnormal signal based an abnormality occurring, and a second reset input terminal, wherein the first power supply is configured to stop providing the first power supply voltage and provide the first abnormal signal based on the first reset input terminal receiving the second abnormal signal, and the second power supply is configured to stop providing second power supply voltage and provide the second abnormal signal based on the second reset input terminal receiving the first abnormal signal.