Voltage Regulator Load Current Compensation Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Voltage regulators face challenges in providing stable voltage sources for analog circuitries due to changes in load impedance, which can lead to code-dependent performance in digital-to-analog conversion (DAC) circuits, and existing solutions like ground buffers increase design complexity and power consumption.
Innovation Solution
A voltage regulation system that includes a current bypass mechanism, dynamically adjusting compensation currents based on sensed load current changes to stabilize the ground voltage across variable loads, thereby eliminating the need for a ground buffer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a ground buffer is used to stabilize ground voltage, then ground voltage stability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the ground stabilization function from a separate ground buffer circuit and integrates it into the voltage regulator itself. The regulator now directly compensates for ground voltage fluctuations caused by varying load currents, eliminating the need for an external ground buffer and reducing overall circuit complexity while maintaining ground voltage stability.
Solution Approach 2:
The patent merges the ground stabilization function with the voltage regulation function into a single integrated circuit. By combining these functions, the design eliminates the separate ground buffer component, reducing device complexity while achieving both voltage regulation and ground stabilization simultaneously.
2Stability of the object's composition
If a ground buffer is used to stabilize ground voltage, then ground voltage stability is improved, but power consumption increases
Solution Approach 1:
The patent removes the power-consuming ground buffer component by integrating its stabilization function into the voltage regulator. This eliminates the additional power consumption that would be required to operate a separate ground buffer while maintaining ground voltage stability through the regulator's built-in compensation mechanism.
3Stability of the object's composition
If load current changes are compensated, then ground voltage stability is improved, but device complexity increases
Solution Approach 1:
The patent combines the load current compensation function with the voltage regulation function in a single integrated circuit. This merging approach achieves ground voltage stability through load current compensation without requiring additional external components, thereby avoiding increased device complexity.
4Stability of the object's composition
If a current bypass mechanism is added to compensate load current changes, then ground voltage stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the current bypass compensation mechanism with the voltage regulator into a single integrated device. This integration achieves ground voltage stability by compensating for load current changes while avoiding the need for separate external compensation circuits, thus not increasing overall device complexity.
Data Source
AI summary
A voltage regulation system provides a relatively stable voltage source without introducing the typical costs of a ground buffer. The disclosed voltage regulation system includes a voltage regulator that is operative to detect a change of the load current and regulate a current bypass mechanism to stabilize a total supply current. For example, the voltage regulator includes a current sensor and a current compensation circuit. The current sensor is configure to generate a current compensation signal based on the load current change, whereas the current compensation circuit is configured to adjust a bypass current in response to the current compensation signal. As a result, the bypass current dynamically compensates the load current change such that the ground voltage of a variable load becomes relatively stable over a range of load currents.