需要用bootstrap drive high side power NMOS,
but need design carefully when you design a diode inside.
if the diode so week or bootstarp pin have quesient current, the system function will not display......
also, seems the signal sequence en-->vin-->vcc-->vbst need take care, this, hehe, i am in studing,,,,,,,,,,,,,,,,,,,,,,,,,,,
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發表於 2011-6-23 12:43:46
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