Other Parts Discussed in Thread: LM5148
LM5146规格书描述驱动能力2.3A/3.5A,LM5148驱动能力2.2A/3.2A,LM5148驱动2.7nF负载,开关比LM5146驱动1nF负载还要快,这里是什么原因?关于外置MOS选型只是尽量选Ci小或者Qg小,是否有数据计算出具体要多小的参数才是合适的(关于MOS的输入电容Ci)?
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Hi
LM5146规格书描述驱动能力2.3A/3.5A,LM5148驱动能力2.2A/3.2A,LM5148驱动2.7nF负载,开关比LM5146驱动1nF负载还要快,这个应该和芯片内部驱动电路有关。
外置MOS选型只是尽量选Ci小或者Qg小,并没有计算数据,只是这样选择,电路效率会更高。