Power Switching Control Circuit for Dual Power Supply Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power supply systems have lower power conversion efficiency in auxiliary power circuits compared to main power circuits, leading to increased blind power generation and suboptimal energy saving performance.
Innovation Solution
An apparatus and method that include a power switching control circuit to detect voltage differences between main and auxiliary power, switching the power source to the main power when it is available and operational, and to the auxiliary power when the main power is not, thereby improving power conversion efficiency and preventing reverse current feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the auxiliary power circuit is used to provide power to the second load, then the electronic apparatus can operate in standby state with continuous auxiliary power supply, but the power conversion efficiency is lower and blind power is generated
Solution Approach 1:
The patent implements dynamic power source switching between main power circuit and auxiliary power circuit based on real-time voltage detection. The power switching control circuit continuously monitors voltage levels and automatically selects the appropriate power source, transforming the static power supply system into a dynamic one that adapts to different operational states, thereby resolving the contradiction between continuous power supply and energy efficiency
Solution Approach 2:
The patent changes the operating parameters of the power supply system by detecting voltage differences and switching power sources based on voltage thresholds. When the voltage difference between main and auxiliary power circuits exceeds a predetermined threshold, the system switches to the main power circuit, optimizing power conversion efficiency while maintaining continuous operation capability
2Loss of energy
If the main power circuit is always used to provide power to the second load, then the power conversion efficiency is improved, but the electronic apparatus cannot operate when main power is abnormal or turned off
Solution Approach 1:
The patent prepares the auxiliary power circuit in advance as a backup power source. The power switching control circuit is pre-configured to detect voltage abnormalities and automatically switch to the auxiliary power circuit when the main power circuit fails or is turned off, ensuring continuous operation and maintaining reliability while optimizing for efficiency during normal operation
Solution Approach 2:
The patent implements a feedback mechanism where the power switching control circuit continuously monitors the voltage output of the main power circuit and compares it with the auxiliary power circuit. Based on this feedback, the system automatically switches power sources to maintain reliable operation, resolving the contradiction between efficiency optimization and reliability assurance
3Loss of energy
If voltage detection and switching control circuitry is added, then power conversion efficiency is improved and reverse current feedback is prevented, but the device complexity increases
Solution Approach 1:
The power switching control circuit performs multiple functions: voltage detection, voltage comparison, switching control, and reverse current prevention. By consolidating these functions into a single integrated control circuit, the patent achieves improved power conversion efficiency and reliability without proportionally increasing device complexity, as the same circuit components serve multiple purposes
Data Source
AI summary
An apparatus and a method for power supply are provided. The apparatus for power supply includes a main power circuit, an auxiliary power circuit and a power switching control circuit. The main power circuit is configured to generate a main power suitable to be provided to a first load and a second load for use. The auxiliary power circuit is configured to generate an auxiliary power suitable to be provided to the second load for use. The power switching control circuit is configured to detect a voltage difference between the main power and the auxiliary power and determine whether the apparatus meets a normal power supply condition, so as to select one of the main power and auxiliary power as a power source of the second load.