Multi-Source DC-DC Power Conversion for Seamless Supply Switching
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Solution Overview
Problem
Existing power management systems struggle to provide reliable power to electronic systems in locations where AC outlets are scarce and batteries frequently run out of charge.
Innovation Solution
The system employs multiple power sources coupled through DC-DC converters to generate multiple voltages, allowing power to be shared among loads and seamlessly switching between internal and external power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is received from AC outlets or batteries, then electronic systems can operate, but AC outlets are not available in all locations and batteries run out of charge
Solution Approach 1:
The system accepts multiple types of power inputs (AC power adapter, battery, and power over Ethernet) and processes them through a unified power management architecture. The power management circuitry automatically selects and switches between different power sources, making the system universally adaptable to various power availability scenarios without requiring location-specific modifications.
2Reliability
If multiple power sources are used, then power availability improves, but system complexity increases
Solution Approach 1:
The patent combines multiple power input paths (AC adapter input, battery input, and PoE input) into a single integrated power management system. The power management circuitry merges these diverse power sources and provides a unified output to the system components, simplifying the overall architecture while maintaining multiple power availability options.
Solution Approach 2:
The power management system automatically monitors the status of all power sources and performs seamless switching between them without user intervention. The system self-manages the complexity of coordinating multiple power sources, handling voltage regulation, current distribution, and source selection autonomously.
3Adaptability or versatility
If power is shared among multiple loads, then system functionality improves, but power distribution complexity increases
Solution Approach 1:
The power management system divides the power distribution into separate regulated output paths for different voltage requirements. It provides a first output voltage for PoE output to external devices and a second output voltage for internal system operation, allowing independent optimization and management of each power distribution channel while maintaining overall system integration.
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 solution enables efficient and reliable power generation for electronic systems, ensuring continuous operation regardless of the availability of AC outlets or battery charge.
Implementation Method 1
multiple power sources are coupled through DC-DC converters to drive multiple loads
Data Source
AI summary
Embodiments of the present disclosure include multiple DC-DC converters configured to generate multiple voltages based on one or more voltage sources. The DC-DC converters are configured to produce a first voltage and second voltage when a first power source is active, when a second power source is active, or when both the first and second power sources are active. In example embodiments, one voltage is used by a network device to power internal circuitry, and another voltage is coupled to tethered devices.