Adaptive Voltage Ramp Control for Stable Power Supply Output
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Solution Overview
Problem
Existing power supply control systems face challenges in accurately controlling output voltage, leading to overshoot and undershoot due to delays in inductive and capacitive components, which can damage sensitive components and waste energy, especially in complex and demanding applications.
Innovation Solution
The implementation of scalable voltage ramp control systems using a controller and digital-to-analog converter circuitry, which employs large range or small range voltage ramp-ups based on a threshold voltage to incrementally adjust the input voltage, minimizing overshoot and undershoot by changing ramp rates at specific voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage is increased at a high rate to improve response speed, then the power supply reaches the target voltage faster, but voltage overshoot and undershoot occur due to delays in inductive and capacitive components
Solution Approach 1:
The patent implements dynamic ramp rate adjustment by monitoring the power supply output voltage and adapting the voltage ramp rate in real-time. When the output voltage approaches the target voltage or shows signs of overshoot/undershoot, the controller automatically reduces the ramp rate. This dynamic adaptation resolves the contradiction by allowing fast voltage changes when needed while preventing instability when approaching the target, thus achieving both speed and reliability.
2Reliability
If voltage overshoot is prevented by slowing down the voltage ramp rate, then voltage stability is improved, but the time to reach the target voltage increases
Solution Approach 1:
The patent employs periodic monitoring of the power supply output voltage during the ramp-up process. The controller continuously checks the output voltage at regular intervals and adjusts the ramp rate accordingly. This periodic action allows the system to maintain high ramp rates for most of the voltage transition (minimizing time) while periodically detecting when the target voltage is approached and slowing down (maintaining stability), thus resolving the time-stability contradiction.
3Adaptability or versatility
If existing control techniques like Dynamic Voltage Scaling are used, then some overshoot and undershoot is reduced, but they are not equipped to handle the demands of emerging applications that require more accuracy and faster performance
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors the power supply output voltage and uses this information to adjust the voltage ramp rate in real-time. This closed-loop feedback system enables the power supply to adapt to various load conditions and application requirements, providing the accuracy and performance needed for emerging applications. The feedback allows the system to automatically slow down when approaching the target voltage or when load conditions change, ensuring precision without sacrificing adaptability.
Data Source
AI summary
A system for scalable voltage ramp control for power supply systems. A system may comprise at least power supply circuitry, digital-to-analog (D/A) converter circuitry and a controller. The power supply circuitry may be configured to output a voltage to a load based on an input voltage provided by the D/A converter. The controller may be configured to control the D/A converter (e.g., to cause the D/A converter to provide the input voltage to the power supply circuitry) using a large range voltage ramp-up or a small range voltage ramp-up. Utilization of the large range voltage ramp-up or the small range voltage ramp-up by the controller may be based on, for example, a threshold voltage.