Voltage Converter Control for Fast Load Response and Stable Output
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Solution Overview
Problem
Existing power supply conversion devices struggle to balance response speed with output voltage quality when load changes rapidly, often resulting in insufficient response speed causing voltage drops or excessive overshoot.
Innovation Solution
A power supply conversion device incorporating a voltage converter, turned-off time detector, turned-on time adjuster, and slope signal adjuster to dynamically adjust control signal times and slope rates based on load changes, ensuring rapid response and stable output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the response speed is increased to quickly adjust output voltage, then the reaction rate improves, but output voltage quality deteriorates with additional overshoot
Solution Approach 1:
The patent implements dynamic adjustment of the turned-on time parameter based on the direction of output voltage change. When voltage increases, the turned-on time is reduced; when voltage decreases, the turned-on time is increased. This dynamic adaptation allows the system to respond quickly to load changes while automatically preventing overshoot, resolving the contradiction between response speed and output voltage quality.
Solution Approach 2:
The patent changes the control parameter (turned-on time) based on the state of the system. By detecting whether the output voltage is increasing or decreasing and adjusting the turned-on time accordingly, the system optimizes its response characteristics in real-time, achieving both fast response and stable output voltage without overshoot.
2Manufacturing precision
If the response speed is decreased to maintain stable output voltage, then output voltage quality improves, but the reaction rate to load changes deteriorates
Solution Approach 1:
The system dynamically adjusts the turned-on time parameter based on voltage change direction, allowing fast response when needed while maintaining stability when voltage is increasing. This resolves the contradiction by making the response speed adaptive rather than fixed.
Solution Approach 2:
The patent uses feedback from the output voltage detection to adjust the control signal parameters. By continuously monitoring whether voltage is increasing or decreasing and adjusting the turned-on time accordingly, the system achieves both fast response and stable output voltage.
Data Source
AI summary
A power supply conversion device includes a voltage converter, a turned-off time detector, a turned-on time adjuster, and a slope signal adjuster. The voltage converter receiving an input voltage converts the input voltage according to a control signal to generate an output voltage. The turned-off time detector coupled to the voltage converter generates detection information by detecting a time length of the control signal in turned-off state. The turned-on time adjuster adjusts a time length of the control signal in turned-on state according to the detection information. The slope signal adjuster adjusts a rising rate of a switching signal on a switch of the voltage converter according to the detection information to generate a slope signal, generates a feedback signal according to the slope signal, and provides the feedback signal to the voltage converter.