Load-Adaptive Power Converter Control for Light-Load Switching Loss
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Solution Overview
Problem
Conventional power converters experience significant switch switching loss, heat generation, and low conversion efficiency when operating under light loading conditions.
Innovation Solution
The power converter incorporates a loading detector and a configurable regulator to adjust the regulation voltage based on loading conditions, optimizing switch operation and reducing losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional power converter uses a fixed regulator to generate a fixed magnitude regulation voltage, then the converter can maintain stable operation, but it experiences large switch switching loss, large heat generation and low conversion efficiency under light loading conditions
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed regulation voltage to a dynamically adjustable regulation voltage that adapts to loading conditions. The configurable regulator modifies the regulation voltage magnitude based on load detection, enabling the high side switch to operate with optimized voltage differences during light loading, thereby reducing switching losses while maintaining stability under heavy loading.
Solution Approach 2:
The patent implements parameter changes by varying the regulation voltage magnitude according to loading conditions. The configurable regulator changes the regulation voltage parameter dynamically - using a first magnitude for light loading to reduce switching loss and a second magnitude for heavy loading to maintain performance, thus optimizing energy efficiency across different operating conditions.
2Productivity
If a conventional power converter uses a fixed regulator, then the circuit structure remains simple, but conversion efficiency is low under light loading conditions
Solution Approach 1:
The patent applies dynamics by introducing a configurable regulator that dynamically adjusts the regulation voltage based on loading conditions detected by a loading detector. This dynamic adjustment enables the converter to optimize its operation for different load scenarios, significantly improving conversion efficiency under light loading while maintaining adequate performance under heavy loading through structured control.
Solution Approach 2:
The patent implements feedback through a loading detector that monitors loading conditions and provides feedback to the configurable regulator. This feedback mechanism enables the system to automatically adjust the regulation voltage magnitude according to actual load demands, thereby optimizing conversion efficiency across varying operating conditions without manual intervention.
3Use of energy by moving object
If a conventional power converter operates with light loading, then the power consumption is reduced, but heat generation becomes relatively large and conversion efficiency drops
Solution Approach 1:
The patent implements parameter changes by adjusting the regulation voltage magnitude based on loading conditions. Under light loading, the configurable regulator uses a first voltage magnitude that reduces the voltage difference across the high side switch, thereby reducing switching losses and heat generation while maintaining acceptable power consumption levels.
Data Source
AI summary
A power converter includes a high side switch, a low side switch, a low side driver, a loading detector, a configurable regulator and a high side driver. The low side driver generates a low side drive signal to control the low side switch. The configurable regulator generates a regulation voltage, a magnitude of which is greater when the loading detector detects that the power converter has light loading than when the loading detector detects that the power converter has heavy loading. The high side driver generates a high side drive signal that switches between the input voltage and the regulation voltage to control the high side switch.