Scalable Power Supply Circuit Using Bypass Switches
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Solution Overview
Problem
Conventional power supply circuits face challenges in scalability without significant cost increases, as they either have fixed performance with integrated power elements or incur high manufacturing costs and EMC optimization difficulties with external power elements.
Innovation Solution
The power supply circuit employs bypass switches to selectively enable or disable power elements based on operational modes, allowing scalable performance without increasing costs by optimizing EMC and simplifying the driver circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external power elements are used to enable performance scalability, then performance scalability is improved, but manufacturing cost increases and EMC optimization becomes difficult
Solution Approach 1:
The patent implements dynamic configurability by providing multiple operational modes (first mode using first power element, second mode using second power element) that can be selectively activated. The power supply circuit dynamically adapts its configuration based on performance requirements, allowing scalability without permanently adding all possible power elements. This dynamic switching mechanism enables the circuit to scale performance on-demand while maintaining cost-effectiveness by only including necessary components.
2Power
If external power elements are added to boost performance, then performance is improved, but electromagnetic compatibility optimization becomes difficult
Solution Approach 1:
The patent employs dynamic switching between different power element configurations based on operational modes. By selectively activating only the required power element (first or second) based on current performance needs, the circuit minimizes the number of active external components, thereby reducing electromagnetic interference and simplifying EMC optimization compared to having all power elements permanently connected.
3Device complexity
If power elements are entirely integrated in the power supply circuit, then device complexity is reduced, but performance scalability is lost
Solution Approach 1:
The patent achieves a balance between integration and scalability by implementing a hybrid architecture where power elements can be selectively integrated or activated based on operational modes. The circuit includes multiple power elements with selective activation mechanisms, allowing the system to maintain lower complexity when operating in a single mode while retaining the capability to scale performance by activating additional power elements when needed.
Data Source
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AI summary
A power supply circuit and a method for operating the power supply circuit are described. In one embodiment, a power supply circuit includes multiple power elements configured to convert an input voltage to an output voltage, a driver circuit coupled to the power elements and configured to drive the power elements, a regulator controller coupled to the power elements and configured to control the power elements for the conversion of the input voltage to the output voltage, and at least one bypass switch coupled to the power elements. The at least one bypass switch is used to bypass at least one of the power elements. Other embodiments are also described.