Low Power Circuit Operation at High Temperatures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low-power circuits face failure at high temperatures due to exponential increase in leakage current, which is not effectively managed by existing technologies, leading to a tradeoff between low current consumption and high temperature operation.
Innovation Solution
A system and method that includes first and second circuitry for low-power and high-temperature modes, respectively, with switching elements to select between modes based on temperature, using a mode select module and switches to adjust current usage, thereby mitigating leakage currents at elevated temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If circuits are configured to function with low standby currents, then energy conservation is improved, but leakage current increases exponentially at high temperatures causing circuit failure
Solution Approach 1:
The circuit is divided into multiple operational modes (low-power mode and high-temperature mode) with separate circuit paths. Switching elements selectively activate different circuit configurations based on temperature conditions, allowing the system to segment its behavior to address both low power consumption and high temperature reliability
Solution Approach 2:
The circuit dynamically switches between different operational modes based on temperature conditions. The switching elements enable the circuit to adapt its configuration in real-time, transitioning from low-power mode at standard temperatures to high-temperature mode when thermal conditions deteriorate, thus maintaining reliability across varying environmental conditions
2Use of energy by stationary object
If circuits operate in low-power mode, then power consumption is reduced, but the circuit fails at temperatures above 85°C due to leakage current
Solution Approach 1:
Switching elements act as intermediaries between the low-power circuit path and the high-temperature circuit path. These switching elements selectively connect different circuit configurations based on temperature conditions, mediating the transition between power-saving operation and high-temperature protection modes
Solution Approach 2:
The circuit changes its operational parameters by switching between different modes. At standard temperatures, the circuit operates with low standby current parameters, while at elevated temperatures, the switching elements reconfigure the circuit to parameters that maintain functionality despite increased leakage current
Data Source
Figure 1
Figure 2
AI summary
A system includes first circuitry including first elements for operating in a low power mode; second circuitry including second elements for operating in a high-temperature mode; and one or more switching elements for selecting between the low power mode and the high temperature mode.