Multi-output Power Supply Coordinated Shutdown via Reset Circuit
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Solution Overview
Problem
Existing multi-output power supply systems lack coordinated operation between power supply devices, leading to abnormal device behavior when an abnormality occurs, requiring complex software control and large-scale hardware to manage independent power supply operations.
Innovation Solution
A multi-output power supply device with a reset circuit that detects abnormalities in one output voltage and forcibly stops the operation of another power supply, using a timer to ensure coordinated shutdown and using DC/DC converters for synchronous rectification to manage output voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple power supply devices operate independently to generate different output voltages, then each power supply can function autonomously, but coordinated operation cannot be performed and system stability deteriorates when abnormalities occur
Solution Approach 1:
The reset circuit monitors the output voltage of the first power supply device and provides feedback control. When an abnormality is detected, the reset circuit generates a reset signal that automatically stops the second power supply device, achieving coordinated operation through feedback without requiring complex software control.
2Reliability
If complex software control and large-scale hardware are used to realize coordinated operations between power supply devices, then system coordination can be achieved, but device complexity increases
Solution Approach 1:
The reset circuit acts as an intermediary between the first and second power supply devices. It monitors the first power supply's output and controls the second power supply's operation based on detected abnormalities, achieving coordination through a simple dedicated circuit rather than complex software or large-scale hardware.
3Productivity
If the second power supply continues outputting voltage when an abnormality occurs in the first power supply, then the second power supply maintains its function, but the controlled device operates abnormally
Solution Approach 1:
The reset circuit performs preliminary detection of abnormalities in the first power supply's output voltage. When an abnormality is detected, it preemptively stops the second power supply device before the controlled device can operate abnormally, preventing harmful effects rather than responding after failure occurs.
Data Source
AI summary
A multi-output power supply device (1) comprises a first power supply (10) for outputting a first output voltage (VDCO1); a second power supply (30) for outputting a second output voltage (VDCO3); and a reset circuit (40) for detecting an abnormality of the first output voltage (VDCO1) and for outputting a first reset signal (XRESET) to forcibly stop the output operation of the second power supply (30).