Configurable Temperature Coefficient Voltage Generator Circuit
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Solution Overview
Problem
Existing voltage and current generators with configurable temperature coefficients require complex implementations, leading to large area occupation and high power consumption, with a limited range of achievable temperature coefficients.
Innovation Solution
A voltage or current generator comprising a pair of bipolar junction transistors with different sizes, each generating a voltage with a negative temperature coefficient, and a circuit that adjusts the output level using scale factors to achieve a configurable temperature coefficient, allowing for a wide range of temperature control with a simple and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing voltage and current generators with configurable temperature coefficients are implemented, then temperature compensation capability is achieved, but circuit complexity increases and occupies larger area with higher power consumption
Solution Approach 1:
The patent combines two voltage generators with different negative temperature coefficients into a single integrated circuit structure. By merging the functionality of multiple generators and using a differential configuration, the circuit achieves temperature compensation capability while reducing overall complexity and area occupation compared to implementing separate generators.
Solution Approach 2:
The voltage generator circuit is designed to provide multiple functions: it generates a voltage output, provides temperature compensation capability, and can operate with configurable temperature coefficients. The differential pair structure enables the circuit to handle multiple tasks simultaneously, reducing the need for separate dedicated circuits.
2Reliability
If existing voltage and current generators with configurable temperature coefficients are implemented, then temperature compensation capability is achieved, but power consumption increases
Solution Approach 1:
By merging the functionality of multiple voltage generators into a single differential pair configuration, the circuit reduces redundant power consumption. The shared tail current source and integrated structure eliminate the need for separate biasing circuits, thereby reducing overall power consumption while maintaining temperature compensation capability.
3Reliability
If existing voltage and current generators with configurable temperature coefficients are implemented, then temperature compensation is provided, but the range of achievable temperature coefficients is limited
Solution Approach 1:
The patent introduces dynamic configurability to the voltage generator by allowing the temperature coefficient to be adjusted or selected from multiple values. This may be achieved through switchable resistor networks, selectable transistor sizing ratios, or programmable control mechanisms that enable the circuit to adapt its temperature coefficient according to different application requirements, thereby expanding the range of achievable temperature coefficients.
4Device complexity
If a simple and compact voltage/current generator is designed, then area occupation and power consumption are reduced, but the range of achievable temperature coefficients may be limited
Solution Approach 1:
The simplified voltage generator circuit is designed to be universal and adaptable by incorporating configurable elements that allow it to achieve a wide range of temperature coefficients despite its compact structure. The differential pair configuration with adjustable resistor ratios or transistor sizing enables the circuit to maintain versatility while keeping the overall design simple and area-efficient.
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
The solution enables a voltage or current generator with low power consumption and a compact implementation, capable of achieving a wide range of temperature coefficients, thus improving the efficiency and flexibility of temperature control.
Implementation Method 1
a first voltage generator adapted to generate a first voltage having a first negative temperature coefficient; a second voltage generator adapted to generate a second voltage having a second negative temperature coefficient different to the first negative temperature coefficient
Data Source
AI summary
A voltage or current generator has a configurable temperature coefficient and includes a first voltage generator that generates a first voltage having a first negative temperature coefficient. A second voltage generator generates a second voltage having a second negative temperature coefficient different to the first negative temperature coefficient. A circuit generates an output level based on the difference between the first voltage scaled by a first scale factor and the second voltage scaled by a second scale factor.