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If the capacitance of the bootstrap capacitor of a synchronous rectification DC/DC converter with an upper/lower Nch MOSFET configuration is set to be far greater than the recommended value, for example ten times greater, would any problems result?
If the capacitance is too large, the current supply ability of the internal power supply of the IC would not be adequate for charging, and it might not be possible to turn on the MOSFET adequately.