输入3.7V,输出正负7V
上电后负电压输出正常,为-7.2V左右,FBN为-6.9V;但是正电压输出为0,FBP也为0;
请问问题出在哪里,或者怎么测试?
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输入3.7V,输出正负7V
上电后负电压输出正常,为-7.2V左右,FBN为-6.9V;但是正电压输出为0,FBP也为0;
请问问题出在哪里,或者怎么测试?
您好,放假刚回来,今天按照您说的进行了测试:
(1)漏极到输出为0.189V压降
(2)输入VIN到源为导通
(3)我用的pmos为 DMP1045U-7,Vgs(th)为-0.3~-1.0,其余的参数可以见我上传的手册
(4)电源电压3.7V,测试栅极到gnd电压为3.68V
还有我更正一下正向输出为0.01V,不是0V
请问问题是出在pmos上吗?C177033_DMP1045U-7编带_2018-07-25.PDF