Power Supply Switching Circuit for Stable Multi-Voltage Transitions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Semiconductor circuits face challenges in efficiently switching power supply modes based on the device's purpose or connection destination, leading to inefficiencies and potential disruptions.
Innovation Solution
A semiconductor circuit with a switch circuit and control circuit that detects input power supply voltages and switches between multiple power supply systems using four operation modes (MBB, BBM, MMBtoBBM, BBMtoMMB) to seamlessly transition between power supply voltages, ensuring continuous or controlled shut-off during transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a semiconductor circuit switches power supply modes based on device purpose or connection destination, then power supply efficiency is improved, but switching disruptions and operational instability occur
Solution Approach 1:
The control circuit detects the presence and voltage levels of multiple power supplies (first power supply via first detection circuit, second power supply via second detection circuit) before switching occurs. This preliminary detection allows the system to prepare for the transition by identifying suitable power supply options and determining appropriate switching modes (first switching mode or second switching mode) before actual power supply switching takes place, thereby preventing operational disruptions
Solution Approach 2:
The patent implements dynamic power supply switching capability where the semiconductor circuit can adaptively change between different power supply modes based on real-time conditions. The control circuit dynamically selects between first and second switching modes depending on detected power supply states, enabling the system to optimize power supply efficiency for different device purposes and connection destinations while maintaining operational stability through controlled transitions
2Adaptability or versatility
If multiple power supply systems are available for switching, then adaptability to different device purposes is improved, but switching control complexity increases
Solution Approach 1:
The power supply switching system is segmented into distinct functional modules: first detection circuit for detecting first power supply, second detection circuit for detecting second power supply, control circuit for managing switching logic, and switch circuit for executing power supply transitions. This segmentation allows each module to perform its specific function independently, simplifying the overall control complexity while maintaining high adaptability to different device purposes and connection destinations
Solution Approach 2:
The control circuit serves multiple functions simultaneously: it detects power supply presence through detection circuits, determines appropriate switching modes based on detected conditions, and controls the switch circuit to execute transitions. This multi-functionality reduces the need for separate dedicated circuits for each task, thereby managing complexity while providing adaptable power supply switching for various device purposes and connection scenarios
Data Source
AI summary
According to one embodiment, a semiconductor device includes: a switch circuit including a first switch configured to control an output of a first power supply voltage, and a second switch configured to control an output of a second power supply voltage, the switch circuit being configured to switch the first power supply voltage and the second power supply voltage; and a control circuit configured to receive a first control signal related to an input of the first power supply voltage, and a second control signal related to an input of the second power supply voltage, configured to detect the inputs of the first and second power supply voltages, and configured to control an operation mode of the switch circuit, based on a detection result of the first and second control signals and the first and second power supply voltages.