1) The load current is too large;
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2) Heat dissipation treatment is not well done. For these two reasons, the corresponding treatment needs to be done from the design source, and even the need to re-select the power chip. The corresponding treatment measures should also be dealt with from these two aspects.
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Solution: Re-select the booster chip with larger output current.
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Among the output parameters of the booster chip, two parameters are very critical: 1) output voltage; 2) Output current. For the output voltage, everyone will take into account, but for the output current may be ignored. Because the selection of the output current needs to first evaluate the problem of the selection of the load electric chip, the power chip is nearly full output when the board is running, resulting in serious heating, and the booster chip can only be re-selected