Bi-directional DC Converter Single Chip Charging Power Supply
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Solution Overview
Problem
Portable electronic devices face limited usage time due to battery capacity constraints, and existing mobile power supplies have complex circuit structures and reliability issues due to the need for multiple semiconductor chips for charging and power supply functions.
Innovation Solution
A bi-directional DC converter integrated into a single semiconductor chip, with mode switching means controlling semiconductor switches to switch between charging and power supply modes, ensuring reliable operation and protection against short-circuits and voltage fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery is electrically coupled in series between the charging circuit and the switching circuit, then the charging and power supply functions can be implemented, but the circuit structure becomes complex and reliability decreases due to requiring multiple semiconductor chips
Solution Approach 1:
The patent merges the charging circuit and switching circuit into a single integrated circuit chip. The battery is electrically coupled to both the first terminal (connected to external power source) and second terminal (connected to load) through the single chip, which contains integrated switching elements and control logic. This integration eliminates the need for multiple separate semiconductor chips and external electrical connections, thereby simplifying the circuit structure while maintaining both charging and power supply functions.
2Adaptability or versatility
If multiple semiconductor chips are used for charging and power supply functions, then both functions can be implemented, but reliability decreases due to external electrical connections
Solution Approach 1:
The patent combines multiple semiconductor chips into a single integrated circuit chip that performs both charging and power supply functions. The internal electrical connections within the single chip replace external electrical connections between multiple chips, eliminating potential failure points from inter-chip connections and improving overall system reliability.
3Device complexity
If a single semiconductor chip is used for both charging and power supply functions, then circuit structure is simplified and reliability is enhanced, but the device must handle bidirectional power flow control
Solution Approach 1:
The patent implements a universal integrated circuit chip that can operate in multiple modes: charging mode (where the battery stores energy from external power source), power supply mode (where the battery supplies energy to the load), and potentially combined mode. The chip contains mode switching means and control logic that automatically detect the operating condition and switch between modes as needed, making the single chip perform multiple functions that previously required separate circuits.
Data Source
AI summary
A power supply including a bi-directional DC converter and a control method thereof are disclosed herein. The power supply includes first to third terminals, first and second semiconductor switches and a mode switching circuit. The first terminal is electrically coupled to an external power source. The second terminal is electrically coupled to a load. The third terminal is electrically coupled to a battery. The first and second semiconductor switches are electrically coupled in series between the first and second terminals. The mode switching circuit is electrically coupled to the first semiconductor switch, the second semiconductor switch and a bi-directional DC converter, respectively. The bi-directional DC converter is further electrically coupled to an intermediate node between the first semiconductor switch and the second semiconductor switch, and to the third terminal.