Power Saving Circuit with Dynamic Load Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Switched mode power supplies face inefficiencies in power saving, even when entering skip mode during light loads, as existing methods do not optimize power consumption effectively.
Innovation Solution
A power saving circuit comprising a DC power supply, sensing unit, and control unit that detects DC current, generates a voltage signal, and enables either a heavy load or light load high efficiency module based on the load state to provide optimal voltages, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If switched mode power supply enters skip mode during light load, then power consumption is reduced, but power saving performance is not optimized sufficiently
Solution Approach 1:
The power supply system is divided into multiple DC switching modules (first DC switching module and second DC switching module) that can operate independently. During light load conditions, only the first DC switching module operates while the second is disabled, segmenting the power conversion function to reduce overall power consumption while maintaining adequate power saving performance
Solution Approach 2:
The system dynamically switches between different DC switching modules based on real-time load detection. The control unit adjusts which module operates according to load conditions, making the power supply adaptive and optimizing the balance between power consumption and power saving performance across varying operating conditions
2Productivity
If multiple DC switching modules are enabled simultaneously, then system performance is improved, but power consumption increases during light load
Solution Approach 1:
The sensing unit continuously monitors the output current and automatically controls which DC switching module should be enabled based on actual load conditions. This self-service mechanism ensures that only the necessary module operates at any given time, preventing unnecessary power consumption while maintaining system performance
Solution Approach 2:
The control unit receives feedback from the sensing unit about the output current status and adjusts the operation of DC switching modules accordingly. This feedback loop ensures that multiple modules are not simultaneously enabled during light load conditions, optimizing the balance between system performance and power consumption
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
The circuit effectively reduces power consumption and improves system performance by dynamically switching between high efficiency modules based on load conditions, optimizing power usage during both heavy and light load states.
Implementation Method 1
The sensing unit, coupled to the DC power supply, is used for detecting the DC current and operating to generate a voltage signal according to the DC current
Data Source
AI summary
A power saving circuit for an electronic device is disclosed. The power saving circuit includes a direct-current (DC) power supply, a sensing unit, and a control unit. The DC power supply is used for providing a DC current. The sensing unit, coupled to the DC power supply, is used for detecting the DC current and operating to generate a voltage signal according to the DC current. The control unit, coupled to the sensing unit, is used for determining whether a system circuit of the electronic device has a light load or a heavy load and generating an enable signal.