按数据手册最简单的应用搭了一个电路, 上电之后不管输入加到几伏,测MOSFET的Vgs一直只有3.12V的样子,虽然也能驱动,但和数据手册标的输入12V以上驱动出12V不一样,求解。MOSFET选用的是IPA057N06N3G,60V/60A的低压MOS。
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实际测试的DS的压降是多少? 有一个典型22mV压降。如果压降小于22mV典型值,VGS的驱动电压是比较低,当负载增加,压降会升高,驱动电压也会升高。