Voltage Generation Circuit Temperature Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Semiconductor devices face malfunctions due to temperature-induced variations in transistor drivability, which affect operation currents and power consumption, particularly in generating internal voltages like core, high, back-bias, cell plate, and bit line pre-charge voltages.
Innovation Solution
A voltage generation circuit comprising a reference voltage generator, comparator, and voltage controller that compares drivability levels to generate a comparison signal, ensuring the internal voltage signal is stable and adaptable to temperature variations, thereby driving internal circuits effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional voltage generation circuits are used, then the circuit structure is simple, but the internal voltage becomes unstable due to temperature-induced transistor drivability variations
Solution Approach 1:
The patent implements a feedback mechanism where the generated internal voltage is fed back to the comparator, which compares it with a reference voltage. The comparison result adjusts the control signal to the voltage generation circuit, forming a closed-loop system that automatically corrects voltage deviations caused by temperature variations, thereby stabilizing the internal voltage.
Solution Approach 2:
The patent introduces a comparator as an intermediary component between the voltage generation circuit and the load. The comparator acts as a mediator that compares the generated voltage with a stable reference voltage and generates appropriate control signals, isolating the voltage generation circuit from direct temperature effects and ensuring stable output.
2Reliability
If temperature compensation is implemented, then the internal voltage stability improves, but the power consumption increases
Solution Approach 1:
The voltage generation circuit performs self-regulation through the feedback mechanism. The system automatically detects voltage deviations and adjusts its own operation without requiring external intervention or additional power-intensive temperature sensing and compensation circuits, achieving temperature compensation with minimal additional power consumption.
Solution Approach 2:
The patent changes the operating parameters of the voltage generation circuit dynamically based on the comparison result. By adjusting the control signal parameters in response to voltage deviations, the system maintains stable output voltage across temperature variations without requiring constant high-power operation of compensation circuits.
3Adaptability or versatility
If the voltage generation circuit adapts to temperature variations, then the drivability stability improves, but the circuit complexity increases
Solution Approach 1:
The comparator serves multiple functions: it compares voltages, generates control signals, and provides feedback to the voltage generation circuit. This multi-functionality allows the circuit to adapt to temperature variations without adding separate dedicated temperature compensation circuits, thereby limiting the increase in overall circuit complexity.
Solution Approach 2:
The patent combines the voltage comparison function and the temperature adaptation function into a single integrated feedback loop. The reference voltage generator and comparator work together as a unified temperature-compensation mechanism, merging multiple functions into fewer components to minimize circuit complexity while achieving temperature adaptability.
Data Source
AI summary
Voltage generation circuits are provided. The voltage generation circuit includes a reference voltage generator suitable for generating a reference voltage signal having a constant level without a correspondence to a temperature variation. A comparator suitable for comparing a first drivability controlled by a level of the reference voltage signal with a second drivability controlled by a level of a comparison voltage signal to generate a comparison signal. A voltage controller may be configured to generate the comparison voltage signal whose level continuously increases until the comparison signal is enabled.