How to accurately locate and quickly fix the problem when the switching power supply fails?
Publish Time: 2024-12-18
In the field of switching power supply, the power heart of electronic equipment, once a fault occurs, it is crucial to quickly and accurately locate and fix the problem, otherwise it will affect the entire system operation. Today, a series of cutting-edge fault diagnosis technologies are opening up new paths for efficiently solving switching power supply faults.
Intelligent sensor monitoring technology is the first to bear the brunt. Micro temperature, current, and voltage sensors are densely distributed in key parts of the switching power supply, capturing operating parameters in real time and uploading them to the intelligent diagnosis system. Taking MOSFET tubes as an example, when a slight overload causes the temperature to rise, the sensor immediately detects it. The system compares the normal operating condition threshold with the big data algorithm to accurately identify potential overheating hazards, changing the inefficiency of the past experience-based troubleshooting. By continuously monitoring the inductor current ripple, abnormal fluctuations are instantly locked to avoid damage to the back-end circuit due to current instability, providing key clues for fault location, just like doing a full-scale CT scan of the internal health of the power supply.
Model-based fault reasoning methods are emerging. Engineers build digital models based on the switching power supply topology and component characteristics to simulate responses under normal and various fault conditions. When the actual power output deviates from the model prediction, such as the output voltage drop that does not conform to the conventional voltage reduction law, the system quickly infers that it is capacitor leakage, diode soft breakdown or control chip abnormality based on the built-in logic, greatly narrowing the possible range of faults. This method is like the brain modeling of an experienced maintenance technician. When faced with complex circuit faults, he is not panic and clearly locks the "lesion".
Remote wireless diagnosis breaks through spatial limitations. With the help of the Internet of Things module, the switching power supply status is transmitted back to the manufacturer or operation and maintenance center in real time. In a different place, experts remotely analyze the uploaded data and quickly provide repair guidance when encountering difficult faults in combination with cloud knowledge base resources. For the widely distributed communication base station switching power supply, there is no need for operation and maintenance personnel to rush to the site one by one, saving a lot of manpower and material resources, achieving zero time difference in fault repair, ensuring uninterrupted power supply, making switching power supply operation and maintenance as easy as a finger, and ensuring the smooth operation of electronic equipment.
