Power Converter with Load Detection for Voltage Selection
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Solution Overview
Problem
Current power conversion apparatuses with multiple output ports face increased circuit design complexity and volume due to the need for multiple power converters to provide different voltage specifications, limiting the efficiency of quick charging for portable electronic devices.
Innovation Solution
A power conversion apparatus that shares a single power converter to generate multiple output voltages, using a load detection circuit and output selection circuit to provide the appropriate voltage to each port based on detected load requirements, thereby reducing circuit complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power converters are used to provide different voltage specifications to multiple output ports, then different voltage requirements can be met, but circuit design complexity and device volume increase
Solution Approach 1:
The patent applies universality by designing a single power converter that can provide multiple voltage specifications (5V, 9V, 12V, etc.) to multiple output ports. The power converter is configured to generate different output voltages based on load detection signals, making one device perform the function of multiple dedicated power converters, thereby reducing circuit complexity while maintaining voltage adaptability
Solution Approach 2:
The patent implements dynamics by making the output voltage selection changeable based on real-time load detection. The control circuit dynamically adjusts which voltage specification is provided to each output port by generating different load detection signals according to the connected device's requirements, allowing the system to adapt flexibly to different charging scenarios
2Adaptability or versatility
If multiple power converters are used to provide different voltage specifications, then voltage diversity is achieved, but the volume of the power conversion apparatus increases
Solution Approach 1:
The patent applies merging by consolidating multiple power converter functions into a single integrated power converter unit. Instead of having separate physical converters for different voltage outputs, the invention combines all voltage conversion capabilities into one device that can switch between different voltage specifications, thereby reducing the overall volume of the power conversion apparatus
3Device complexity
If a single power converter is shared to provide multiple voltages, then circuit complexity is reduced, but voltage selection control must be precisely implemented
Solution Approach 1:
The patent implements feedback by using a load detection circuit that monitors the characteristics of connected devices and sends detection signals back to the control circuit. Based on this feedback information, the control circuit automatically determines the appropriate voltage specification and configures the power converter accordingly, ensuring precise voltage selection without manual intervention
Solution Approach 2:
The system applies self-service by enabling automatic voltage selection through load detection. When a device is connected to an output port, the system automatically detects the device's voltage requirements and configures the power converter to provide the appropriate voltage without user input, making the voltage selection process autonomous and seamless
Data Source
AI summary
A power conversion apparatus including a power converter, a first output port, a second output port, a load detection circuit and an output selection circuit is provided. The power converter generates a first and a second output voltages having different voltage specification. The first and the second output ports respectively provide the received output voltages to a back end. The load detection circuit is coupled with the power converter and the second output port and detects a load requirement of a load connected to the second output port to generate a load detection signal. The power converter generates a first switch control signal according to the load detection signal to control the output selection circuit, such that the output selection circuit provides one of the first and the second output voltages in response to the first switch control signal.