Power Supply Apparatus Sequential Drive Abnormality Detection
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Solution Overview
Problem
Existing power management circuits in electronic devices often face challenges in efficiently converting external power voltages into internal voltages due to limitations in the number of output terminals, leading to suboptimal operation and potential abnormality detection in power management circuits.
Innovation Solution
A power supply apparatus and method that includes multiple power management circuits and a switch circuit, where a power controller drives the circuits sequentially to generate output voltages and applies them to output terminals, ensuring that only normally operated circuits supply power, with a greater number of power management circuits than output terminals to accommodate varying voltage levels and detect abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power management circuits are provided to supply power to internal circuits, then the reliability of power supply is improved, but the device complexity increases due to the need for switch circuits and control mechanisms
Solution Approach 1:
The power management system is divided into multiple independent power management circuits (first PM circuit, second PM circuit) that can operate independently. Each PM circuit can be selectively activated based on operational needs, allowing the system to achieve high reliability through redundancy while managing complexity by segmenting the power management function into separate modular units.
Solution Approach 2:
The system dynamically selects and activates specific power management circuits based on operational conditions. The controller can selectively activate the first or second PM circuit depending on which circuit is functioning normally, providing adaptive power supply management that maintains reliability while optimizing system complexity by only activating necessary circuits.
2Adaptability or versatility
If the number of power management circuits exceeds the number of output terminals, then the adaptability to varying voltage levels is improved, but the ease of operation deteriorates due to sequential driving requirements
Solution Approach 1:
Multiple power management circuits are provided with the capability to generate different voltage levels (first voltage level, second voltage level) that can be supplied to the same output terminals. This universal design allows the system to adapt to varying voltage requirements of different internal circuits while using a standardized output interface, achieving versatility without proportionally increasing operational complexity.
Solution Approach 2:
The power management circuits are designed to autonomously generate their output voltages based on their internal configurations. The controller simply needs to selectively activate the appropriate PM circuit, and the circuit automatically provides the required voltage level to the output terminals, reducing the operational burden despite having multiple circuits with different voltage capabilities.
3Measurement precision
If power management circuits are driven sequentially, then the ability to detect abnormal circuits is improved, but the productivity of power supply process deteriorates due to sequential operation
Solution Approach 1:
The controller is configured to detect abnormalities in power management circuits before they affect power supply operation. By sequentially activating PM circuits and monitoring their output voltages in advance, the system can identify malfunctioning circuits ahead of time and switch to normal circuits, ensuring continuous reliable power supply while maintaining detection precision through preliminary verification of circuit functionality.
Solution Approach 2:
The system maintains continuous power supply to output terminals by having multiple PM circuits ready to take over. When one PM circuit is detected as abnormal, the controller seamlessly switches to another normal PM circuit without interrupting the power supply to internal circuits. This continuous operation maintains productivity while the sequential detection process ensures abnormal circuits are identified with high precision through redundant power management paths.
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
This solution ensures reliable power supply to all internal circuits by identifying and isolating abnormal power management circuits, replacing them with next normal ones, and efficiently managing power distribution, thereby ensuring consistent operation and reducing power supply process termination.
Implementation Method 1
a power management circuits configured to receive an external power voltage to generate an output voltage having a same level or different levels
Data Source
AI summary
A power supply apparatus may include a power management circuits, a switch circuit and a power controller. The power controller configured to sequentially drive the power management circuits in accordance with a drive sequence, and control the switch circuit to apply, to the output terminals, the output voltage of a normally operated power management circuit as the driven power management circuit among the power management circuits.