Compared to starting difficulties, a more serious abnormal usage situation is the severe overheating of the power module during operation. The root cause of this phenomenon is the energy loss during the voltage conversion process of the power module, which generates heat and causes the module to overheat, reducing the efficiency of power conversion. This can affect the normal operation of the power module and may impact the performance of surrounding devices. Immediate investigation is required. What situations can cause the power module to overheat severely? Aviation ground power 2, 36V aviation power 1, 400HZ frequency conversion power 7, 115/200V power 2, 27V DC power 5, 400HZ power 12, aviation power
The following are the specific reasons: • Linear power module usage; • Overcurrent load; • Insufficient load size: If the load power is less than 10% of the module's power output, it may cause the module to heat up excessively (too low); • Excessive environmental temperature or poor heat dissipation. To address these issues, improvements can be made through environmental optimization or load adjustment, as follows: • Add a heat sink when using linear power supplies; • Increase the load of the power module to ensure it is not less than 10% of the rated load; • Lower the environmental temperature and maintain good heat dissipation; • Select the appropriate input voltage.
