使用24V升压到38V做开锁动作容易烧坏BOOT脚和SW脚,电磁锁是9R,电流4.2A左右
BOOT脚测量对地电阻内有4.1R
SW脚大电流烧坏电路和芯片
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Hi
按照datasheet 第17、18页来做,例如增加RCHARGE之类,具体看其描述。