Series Boost Converter Voltage Amplification
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Solution Overview
Problem
Existing power converter solutions for personal audio devices face challenges in achieving a sufficient voltage boost while minimizing the physical size of inductors, making single-stage boost converters unattractive for portable electronics.
Innovation Solution
A series combination of a boost converter and a power converter, where the power converter further boosts the voltage to achieve a higher output than a single-stage boost converter, allowing for smaller inductor sizes and enhanced voltage amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single-stage boost converter is used to generate higher voltage, then the voltage boost capability is improved, but the physical size of the inductor increases making it unattractive for portable electronics
Solution Approach 1:
The patent divides the single-stage boost converter into two separate stages: a first boost converter and a second boost converter. Each stage provides a portion of the total voltage boost, allowing the use of smaller inductors in each stage compared to a single-stage design. The first boost converter generates an intermediate voltage, and the second boost converter further boosts this to the final high voltage, thereby resolving the contradiction between voltage boost capability and inductor size.
2Power
If a series combination of two power converters is used, then the voltage amplification is improved, but the device complexity increases
Solution Approach 1:
The patent combines two boost converters in series connection where the output of the first boost converter feeds into the input of the second boost converter. This merging of two simpler converter stages achieves the high voltage amplification function that would require a complex single-stage design. The series combination allows each converter to operate at optimized parameters, reducing overall system complexity while maintaining high voltage gain capability.
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
This configuration reduces the size of boost inductors required, enabling more compact designs while maintaining adequate voltage amplification, and provides flexibility through bypass modes and integration options.
Implementation Method 1
A switching power converter is a type of electronic circuit that converts a source of power from one direct current (DC) voltage level to another DC voltage level
Data Source
AI summary
In accordance with embodiments of the present disclosure, a system may include a series combination of a boost converter and a power converter coupled together in series, such that the series combination boosts an input voltage to the series combination to an output voltage greater than the input voltage such that a voltage boost provided by the series combination is greater than a voltage boost provided by the boost converter alone. The system may also include an amplifier, wherein an input of the amplifier is coupled to an output of the series combination of the boost converter and the power converter.