There are many possible causes of MOS tube heating, and the following are some common solutions:
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1. When the MOS tube is working, a suitable radiator is required to dissipate heat. Check whether the radiator is in normal contact with the MOS tube and whether the surface of the radiator is clean.
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2. Check whether the circuit design around the MOS tube is reasonable, such as the choice of inductance and capacitance, and whether the power supply voltage is too high.
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3. Check whether the MOS tube is heated due to exceeding its maximum withstand current and voltage. If so, the MOS tube with higher current and voltage needs to be replaced.
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4. Check whether the pin and line connection of the MOS tube are loose, poor contact or short circuit, etc., to ensure reliable connection.
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5. If the MOS tube has been damaged or aging, it will also lead to heat phenomenon, and a new MOS tube needs to be replaced.
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It should be noted that if the above methods cannot solve the problem, it is recommended to seek professional help to avoid more serious damage. At the same time, when using the MOS tube, it is necessary to operate in strict accordance with the specified parameters and requirements to ensure its normal work and extend its service life.
The solution to mos heating is as follows
1. The MOS selection is unreasonable, the internal resistance is large, or the thermal conductivity of the package is not good, resulting in higher temperature rise.
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2, the heat dissipation effect is not good, the MOS tube is attached to the PCB board or screwed on the heat sink.
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For the above MOS heating reasons: the solution is out, 1, replace the MOS tube with smaller internal resistance, or choose the MOS tube package form with good heat dissipation effect.
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2, improve the heat dissipation conditions of MOS tube, increase the heat sink, etc