Voltage Regulator Module Dynamic Gain Compensation
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Solution Overview
Problem
Integrated circuit devices face inaccuracies in voltage output due to abrupt load changes, which cause ripples, and existing solutions struggle to maintain system stability, especially at low load current states, as high comparator gain is undesirable for stability.
Innovation Solution
A voltage regulator module with a control module that receives instantaneous load current indications to apply compensation to the control signal, allowing for real-time adjustment and maintaining a constant voltage level by comparing current values to historic data, thereby reducing output voltage ripples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high comparator gain is implemented to compensate for abrupt load changes, then voltage regulation accuracy is improved, but system stability deteriorates at low load current states
Solution Approach 1:
The patent implements dynamic comparator gain adjustment based on load current detection. The control module detects load current states and dynamically adjusts the comparator gain between a first gain value (for low load current states) and a second gain value (for high load current states). This dynamic adaptation resolves the contradiction by optimizing gain for each operating condition rather than using a fixed high gain that destabilizes low current states.
Solution Approach 2:
The patent changes the comparator gain parameter based on detected load current conditions. When low load current is detected, a first (lower) gain value is applied to maintain stability. When high load current is detected, a second (higher) gain value is applied to improve voltage regulation accuracy. This parameter adaptation resolves the technical contradiction by matching gain to operational requirements.
2Stability of the object's composition
If different regulator modes are implemented to provide stability at low load current and response time at high load current, then both stability and response are improved, but device complexity increases
Solution Approach 1:
The patent segments the load current operating range into distinct states (low load current state and high load current state) detected by the control module. Each segment triggers a specific comparator gain configuration, simplifying control compared to full multi-mode regulation. This segmentation approach reduces complexity while maintaining stability and response performance.
Solution Approach 2:
Instead of implementing multiple complete regulator modes with different circuit configurations, the patent simplifies complexity by changing only the comparator gain parameter based on load current detection. This single parameter adjustment achieves the effects of multiple modes without the complexity of multiple operational configurations.
3Stability of the object's composition
If real-time load current detection and compensation is applied, then output voltage stability is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback through the control module that detects load current and feeds this information back to adjust the comparator gain. This feedback mechanism improves output voltage stability by adapting to load changes in real-time. The complexity is managed by using the existing control module structure rather than adding separate complex compensation circuits.
Data Source
AI summary
An integrated circuit device comprising at least one voltage supply module arranged to receive at an input thereof at least one control signal and to provide at an output thereof a voltage signal in accordance with the received at least one control signal, and at least one control module comprising at least one feedback loop between the output of the at least one voltage supply module and the input of the at least one voltage supply module, and arranged to generate the at least one control signal based at least partly on the voltage level of the voltage signal output by the at least one voltage supply module. The at least one control module is further arranged to receive at an input thereof at least one instantaneous indication of a load current at the output of the at least one voltage supply module, and apply a compensation to the at least one control signal provided to the at least one voltage supply module based at least partly on the received at least one indication of the load current.