Switching Voltage Regulator Control System with Adjustable Conversion Rates
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Solution Overview
Problem
Switching voltage regulators commonly experience overshooting, leading to malfunctions in electronic devices, and adding additional components to prevent this increases manufacturing costs.
Innovation Solution
A control system for switching voltage regulators incorporating an adjustable switched-capacitor conversion circuit, error generator, and controlling module that adjusts conversion rates to maintain output voltage within a regulation range, using discrete conversion rates and control variable sets to prevent overshooting and undershooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional electronic elements are added to prevent overshooting, then voltage regulation stability is improved, but manufacturing cost increases
Solution Approach 1:
The patent changes the control parameters by implementing multiple discrete conversion rates (0.5, 0.6, 0.7, 0.8, 0.9) instead of a fixed conversion rate. The controlling module dynamically selects appropriate conversion rates based on operating conditions, allowing the system to maintain voltage stability without adding physical electronic components. This parameter-based control resolves the contradiction by achieving reliability improvement through software/control logic rather than hardware addition.
Solution Approach 2:
The patent introduces dynamic adaptability by making the conversion rate adjustable and switchable based on real-time voltage feedback and operating conditions. The system transitions from a static fixed conversion rate to a dynamic multi-rate system that can adapt to different load conditions. This dynamic control mechanism prevents overshooting and maintains stability without requiring additional electronic elements, thereby resolving the contradiction between reliability and manufacturing cost.
2Power
If conversion rate is increased to meet higher voltage demands, then output voltage capability is improved, but overshooting occurs causing malfunction
Solution Approach 1:
The patent segments the conversion rate into multiple discrete levels (0.5, 0.6, 0.7, 0.8, 0.9) rather than using a single fixed or continuously variable rate. This segmentation allows the system to select the appropriate conversion rate level based on the specific voltage demand and operating conditions. By dividing the conversion rate into discrete segments, the system can increase output voltage capability when needed while avoiding excessive overshooting, thus resolving the contradiction between power capability and harmful overshooting effects.
Solution Approach 2:
The patent implements a feedback control mechanism where the error generator continuously monitors the output voltage and compares it with the target voltage. The controlling module uses this feedback information to dynamically adjust the conversion rate selection. When the output voltage approaches the target, the system automatically reduces the conversion rate to prevent overshooting. This feedback control resolves the contradiction by enabling high output voltage capability while actively preventing harmful overshooting through real-time monitoring and adjustment.
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 system effectively stabilizes output voltage, preventing malfunctions and reducing manufacturing costs by dynamically adjusting conversion rates based on error voltage, ensuring accurate voltage regulation for various load elements.
Implementation Method 1
an adjustable switched-capacitor conversion circuit has a plurality of discrete conversion rates and includes a voltage input end, a voltage output end, and a conversion rate control end
Data Source
AI summary
A control system of a switching voltage regulator includes an adjustable switched-capacitor conversion circuit, an error generator, and a controlling module. The adjustable switched-capacitor conversion circuit has a plurality of discrete conversion rates, and selects a corresponding conversion rate and outputs an output voltage according to a signal of the conversion rate. An error generator is connected to the adjustable switched-capacitor conversion circuit and compares the output voltage with an external reference voltage to obtain an error voltage. The controlling module is connected between the error generator and the adjustable switched-capacitor conversion circuit to store a plurality of control variable sets, and selects one of plurality of control variable sets according to the error voltage. Afterwards, the controlling module calculates to output the signal of the conversion rate and further adjust the output voltage according to the selected control variable sets.