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下载“第Ⅲ章:晶体管” (PDF:2.0MB)
金属氧化物半导体场效应晶体管(MOSFET)是目前最受关注的晶体管。
MOSFET有两种类型:N沟道(参见下图3-4(a)N沟道)和P沟道(参见下图3-4(b)P沟道)。
N沟道广泛用于AC/DC电源、DC/DC转换器、逆变器设备等,而P沟道则用于负载开关、高边开关等。
双极晶体管和MOSFET之间的差异如表3-1所示。
BJT(电流驱动器件) | MOSFET(电压驱动器件) |
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表3-1 BJT和MOSFET的比较