Programmable Power Supply Voltage Control via Signal Frequency
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Solution Overview
Problem
Users with multiple mobile devices face the burden of carrying multiple power supplies due to varying voltage requirements, and there is a need for a method to ensure safe and stable voltage switching between programmable power supplies and mobile devices.
Innovation Solution
A method for programming a programmable power supply that generates a requesting signal with high-state and low-state periods, determines output voltage based on these periods, and includes a de-bounce operation to filter noise, allowing the power supply to adapt voltage output according to the device's energy demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a programmable power supply is used to provide different voltages for multiple mobile devices, then the need to carry multiple power supplies is reduced, but communication and voltage switching control become more complex
Solution Approach 1:
The mobile device autonomously generates requesting signals to control the power supply voltage without external intervention. The device monitors its own power needs and automatically adjusts the voltage output through the requesting signal mechanism, eliminating the need for manual control or complex external communication protocols.
Solution Approach 2:
The power supply voltage is dynamically adjusted by changing the frequency of the requesting signal generated by the mobile device. Different voltage levels correspond to different signal frequencies, allowing the power supply to adapt to various device requirements through simple frequency-based parameter changes rather than complex control systems.
2Loss of energy
If voltage switching is implemented to match device power demands, then power efficiency is improved, but noise in the requesting signal may cause unstable voltage switching
Solution Approach 1:
The de-bounce operation performs preliminary filtering of the requesting signal before voltage switching occurs. By detecting and filtering out noise and spurious signals in advance, the system prevents unstable voltage switching and ensures that only valid, intentional signal changes trigger voltage adjustments, thereby maintaining reliability while preserving power efficiency.
Data Source
AI summary
The present invention provides a method of programming a programmable power supply. In the method, a requesting signal is generated in a device, and the requesting signal is received in the programmable power supply. Then, an output voltage of the programmable power supply is determined in accordance with a frequency of the requesting signal. The output voltage of the programmable power supply is coupled to power a load of the device. A de-bounce operation is further provided for filtering noises of the requesting signal. The requesting signal comprises a high-state period and a low-state period. The high-state period is defined during which a level of the requesting signal is higher than a threshold. The low-state period is defined during which the level of the requesting signal is lower than the threshold. The output voltage of the programmable power supply is further determined by a period of the requesting signal.