On-Chip Heating Circuit for Low-Temperature Boot Reliability
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Solution Overview
Problem
Chips fail to operate normally in low-temperature environments below −40° C., as they cannot boot up due to temperatures being lower than their normal operation range, restricting the use of electronic devices in high-latitude and extremely cold regions.
Innovation Solution
A chip with an internal heating circuit that includes a comparison circuit and a thermal-energy generation circuit, which senses the chip's temperature and generates heat when it falls below a threshold, allowing the chip to reach its normal operating temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the chip operates in low-temperature environments below -40°C, then the chip can be used in high-latitude and extremely cold regions, but the processor cannot operate normally and the chip cannot boot up
Solution Approach 1:
The heating circuit activates before the processor starts operating to pre-heat the chip. The temperature sensor detects low temperature conditions and triggers the heating circuit to raise the chip temperature to the normal operating range before the processor attempts to boot, ensuring reliable operation in cold environments
Solution Approach 2:
The heating circuit acts as an intermediary component between the power supply and the processor. It mediates the temperature conditions by generating heat through a heating element when the temperature sensor detects low temperatures, creating suitable thermal conditions for the processor to operate reliably
2Adaptability or versatility
If a heating circuit is added to enable low-temperature operation, then the chip can operate in cold environments, but the device complexity increases
Solution Approach 1:
The heating circuit is integrated directly into the chip substrate, merging the heating function with the existing chip structure. The temperature sensor, heating element, and control logic are combined in a single integrated circuit, avoiding the need for separate external heating components and reducing overall device complexity
Solution Approach 2:
The heating circuit serves multiple functions: it heats the chip during cold boot conditions, maintains temperature during operation, and integrates with the existing power management and control circuits. This multi-functionality reduces the need for separate dedicated components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the chip to operate within its normal temperature range in low-temperature environments, ensuring proper functioning and expanding the usage range of electronic devices without requiring industrial-grade specifications.
Implementation Method 1
the comparison circuit enables the thermal-energy generation circuit to generate thermal energy to raise the temperature of the chip
Data Source
AI summary
A heating circuit is provided. The heating circuit is disposed in a chip which has a normal operation temperature range. The heating circuit includes a comparison circuit and a thermal-energy generation circuit. The comparison circuit compares a temperature voltage with a first threshold voltage. The temperature voltage represents a temperature of the chip. The thermal-energy generation circuit is controlled by the comparison circuit. When the temperature voltage is less than the first threshold voltage, the comparison circuit enables the thermal-energy generation circuit to generate thermal energy to raise the temperature of the chip.