Load Adaptable Boost DC-DC Converter with Dynamic Control
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Solution Overview
Problem
Existing boost DC-DC power converters lack the ability to efficiently adjust operational parameters such as switching frequency and duty cycle based on load-specific requirements, leading to suboptimal power conversion efficiency and battery life in portable applications.
Innovation Solution
A boost DC-DC power converter with a semiconductor switch arrangement and a control circuit that adjusts switching frequency, duty cycle, and feedback loop gain based on detected load current and voltage, utilizing a hybrid converter topology combining charge pumps and switched mode boost converters to generate multiple DC output voltages with reduced component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If operational parameters of known boost DC-DC power converters are kept fixed, then device complexity is reduced, but power conversion efficiency deteriorates due to inability to adapt to varying load conditions
Solution Approach 1:
The patent implements dynamic adjustment of operational parameters including switching frequency and duty cycle based on detected load conditions. The control circuit continuously monitors load current and voltage, then adapts switching parameters in real-time to optimize power conversion efficiency across varying load demands, transforming the system from static to dynamic operation.
Solution Approach 2:
The invention changes physical operating parameters (switching frequency and duty cycle) in response to detected load conditions. By varying these parameters dynamically, the system optimizes power conversion efficiency for different load scenarios, directly addressing the contradiction between fixed parameters and adaptive efficiency.
2Productivity
If switching frequency and duty cycle are adjusted based on load conditions, then power conversion efficiency is improved, but device complexity increases due to additional sensing and control requirements
Solution Approach 1:
The patent incorporates a feedback mechanism where load current and voltage are detected and fed back to the control circuit. This feedback enables the control circuit to adjust switching frequency and duty cycle based on actual load conditions, creating a closed-loop system that optimizes efficiency while managing complexity through intelligent control.
Solution Approach 2:
The control circuit automatically adjusts operational parameters based on detected load conditions without external intervention. The system self-regulates by monitoring its own output and adapting switching parameters, reducing the need for complex external control mechanisms while maintaining high efficiency.
3Adaptability or versatility
If multiple separate DC output voltages are generated, then adaptability to different load requirements is improved, but device complexity increases due to additional components
Solution Approach 1:
The patent implements a multi-functional power converter that can generate multiple separate DC output voltages from a single input stage. The semiconductor switch arrangement and capacitor network enable the system to provide different voltage levels to different loads simultaneously, making the system universal and adaptable to diverse load requirements without proportionally increasing complexity.
Solution Approach 2:
The invention merges multiple output voltage generation capabilities into a single integrated converter topology. By combining charge pump and switched mode boost converter features, the system achieves multiple output voltages through shared components rather than separate converters, reducing overall component count while maintaining versatility.
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 solution enables adaptable power delivery to meet changing load demands, improving power conversion efficiency and extending battery life by optimizing switching frequency and duty cycle in response to load conditions, while maintaining efficient power delivery.
Implementation Method 1
an inductor having a first end connected to the boost node and a second end connectable to a DC input voltage supply
Implementation Method 2
A first capacitor is connected between a first intermediate node of a first leg of the semiconductor switch arrangement and a second intermediate node of a second leg of the semiconductor switch arrangement
Data Source
AI summary
A boost DC-DC power converter comprising a semiconductor switch arrangement comprising a plurality of series connected semiconductor switches. A first capacitor is connected between a first intermediate node of a first leg of the semiconductor switch arrangement and a second intermediate node of a second leg of the semiconductor switch arrangement. A control circuit is coupled to respective control terminals of the plurality of semiconductor switches. A load sensor is configured to detect a load current and/or a load voltage of a load circuit connectable to at least a first DC output voltage of the DC-DC power converter. The control circuit being further configured to adjusting one or more operational parameters of the boost DC-DC power converter based on the detected load current and/or load voltage.