Reference Voltage Compensation Using Segmented Temperature Curves
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Solution Overview
Problem
Existing reference power supplies struggle to provide accurate output voltage across varying temperatures, especially in scenarios with large temperature changes, leading to instability and errors in integrated circuits.
Innovation Solution
A power supply system with multiple temperature compensation modules providing reference voltages based on distinct temperature curves, each with unique temperature coefficients, and a summation module to combine these voltages, ensuring a stable output voltage across different temperature ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single temperature curve is used for voltage compensation, then the circuit structure is simple, but the output voltage accuracy deteriorates under large temperature changes
Solution Approach 1:
The temperature compensation function is segmented into multiple independent modules, each handling a specific temperature range with its own optimized temperature curve. This allows each module to maintain simplicity while the collective system achieves high accuracy across the full temperature spectrum.
Solution Approach 2:
Different temperature compensation modules use different temperature curves optimized for their respective temperature ranges. Each module has locally optimized characteristics (different temperature coefficients) that match the specific requirements of its operating range, improving overall accuracy.
2Measurement precision
If multiple temperature compensation modules with different temperature curves are used, then the output voltage accuracy improves across different temperature ranges, but the device complexity increases
Solution Approach 1:
The system dynamically selects and activates appropriate temperature compensation modules based on the current temperature range. This dynamic adaptation allows the system to use only the necessary modules for current operating conditions, reducing effective complexity while maintaining accuracy.
Solution Approach 2:
The temperature coefficients and curve parameters of the compensation modules are optimized to change at critical temperatures, allowing smooth transitions between modules. This parameter optimization reduces the abruptness of switching and minimizes the perceived complexity of the system.
3Stability of the object's composition
If temperature compensation with different coefficients is applied, then the output voltage stability improves across temperature ranges, but the design difficulty increases
Solution Approach 1:
The temperature compensation curves and coefficients are pre-calculated and pre-configured for each module during the design phase. This preliminary preparation simplifies the manufacturing process, as the complex optimization work is done beforehand rather than during production.
Solution Approach 2:
Standardized interface circuits and control logic act as intermediaries between the different temperature compensation modules, simplifying their integration. These intermediary elements provide a uniform method for combining modules with different characteristics, reducing design complexity.
Data Source
AI summary
A power supply, method for voltage compensation and electronic device are provided. The power supply includes: a plurality of temperature compensation modules, for providing a plurality of reference voltages respectively based on a plurality of temperature curves which are not identical, and each of the temperature curve linearly characterizing a corresponding relationship between the reference voltage and temperature in a plurality of temperature ranges respectively; and a summation module, for providing an output voltage in accordance with the plurality of reference voltages, wherein for at least one temperature curve, at least two temperature ranges correspond to different temperature coefficients, so that an output voltage curve characterizing the output voltage changing with temperature has not identical temperature coefficients at least in two temperature ranges, and a critical temperature between temperature ranges in the output voltage curve corresponds to a stable output voltage.