Impedance-Sensing Control Circuit for Adaptive Over-Voltage Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing integrated circuit control circuits face challenges in cost-effectively providing different responses to over-voltage conditions, often requiring multiple manufacturing versions or increased terminal counts, which increases packaging costs and complexity.
Innovation Solution
A control circuit design that senses impedance at a terminal, using a current sense circuit to generate signals based on current thresholds, allowing for adaptive responses such as shutdown or auto-restart, dependent on the impedance characteristics, thereby reducing the need for multiple versions and terminal counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate terminals are used to accommodate various responses to operating conditions, then adaptability is improved, but device complexity and packaging cost increase
Solution Approach 1:
The patent applies universality by designing a single control circuit terminal that can detect multiple different impedance states, each corresponding to different customer-selected responses. The terminal serves multiple functions by distinguishing between first impedance values (indicating one response type) and second impedance values (indicating another response type), eliminating the need for separate terminals for each response option.
Solution Approach 2:
The patent utilizes parameter changes by detecting different impedance values at the terminal to determine the desired response. Instead of using multiple terminals, the system changes the impedance parameter of an external circuit element connected to the single terminal, and the control circuit detects these impedance variations to differentiate between customer-selected response options.
2Adaptability or versatility
If multiple versions of the integrated circuit are manufactured to provide different responses, then adaptability is improved, but manufacturing cost and inventory complexity increase
Solution Approach 1:
The patent applies parameter changes by using a single integrated circuit design that can detect different impedance states. Instead of manufacturing multiple versions of the circuit, customers can select different responses by connecting external circuit elements with different impedance values to the terminal, and the control circuit automatically detects and responds to these impedance differences.
Solution Approach 2:
The system enables self-service by allowing customers to configure the desired response behavior through simple external circuit connections rather than requiring custom-manufactured circuit versions. The control circuit autonomously detects the impedance configuration and adjusts its operation accordingly, eliminating the need for specialized manufacturing processes.
Data Source
AI summary
A power supply controller measuring impedance includes a sense circuit coupled to a sense terminal. A regulation circuit is coupled to the sense circuit and is also coupled to regulate the sense terminal to a first voltage level when a current flowing through the sense terminal is less than a first threshold current level. The regulation circuit is further coupled to regulate the sense terminal to a second voltage level when the current flowing through the sense terminal reaches the first threshold current level. A response circuit is coupled to the sense circuit and is responsive to the current flowing through the sense terminal when the sense terminal is regulated at the second voltage level.