【技术】解析MOS管的工作原理

时间： 2023-09-01 来源：合科泰电子官网

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MOS管（金属-氧化物-半导体管）是一种常见的场效应晶体管（FET），常用于放大电路和开关电路中。MOS管主要由一片半导体晶体片（通常是硅）和相连的两个金属电极组成，它们之间隔着一层氧化物。本文中合科泰电子将为大家解析MOS管的工作原理。

MOS管的工作原理基于半导体中的电荷控制和电场控制。晶体片被掺杂成N型或P型半导体，在其表面形成一个绝缘层，即氧化物层。这一层氧化物隔离了金属电极和半导体之间的直接接触，从而实现了电场的控制。

当在MOS管的金属电极（栅极）上施加一个电压，形成了一个电场，该电场通过氧化层作用于半导体中的掺杂离子。这个电场可以引起离子的移动，从而改变半导体中形成的沟道的电导率。

如果栅极电压较低，沟道处于关闭状态，当前无法通过沟道流动电流。如果栅极电压逐渐增加到某个阈值电压以上，沟道开始导电，此时MOS管进入导通状态，电流可以通过沟道流动。栅极电压的变化可以控制沟道中的电流大小。

通过调整栅极电压，可以控制MOS管的导通与截止，从而达到放大或开关的目的。这种工作原理使得MOS管能够实现高输入阻抗、低噪声、高增益和低功耗等优点，广泛应用于集成电路和各种电子设备中。

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本文由三年不鸣转载自合科泰电子官网，原文标题为:MOS管的工作原理，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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EPC（宜普）eGaN® 氮化镓晶体管（GaN FET）和集成电路及开发板/演示板/评估套件选型指南

目录- eGaN FETs and ICs eGaN® Integrated Circuits Half-Bridge Development Boards DrGaN DC-DC Conversion Lidar/Motor Drive AC/DC Conversion

型号- EPC2212,EPC2214,EPC2059,EPC2216,EPC2215,EPC2218,EPC2016C,EPC2050,EPC2052,EPC2051,EPC2054,EPC2053,EPC2055,EPC9086,EPC2218A,EPC90153,EPC9087,EPC90154,EPC2069,EPC2102,EPC2101,EPC2104,EPC2103,EPC2106,EPC2105,EPC2107,EPC9018,EPC2065,EPC90151,EPC90152,EPC21702,EPC2100,EPC2067,EPC2221,EPC21701,EPC2066,EPC90150,EPC9097,EPC90145,EPC90142,EPC9098,EPC90143,EPC9099,EPC9092,EPC90148,EPC90149,EPC90146,EPC9094,EPC90147,EPC2219,EPC9091,EPC2619,EPC2036,EPC2035,EPC2038,EPC2037,EPC2014C,EPC2039,EPC9507,EPC2030,EPC9067,EPC2032,EPC2031,EPC9068,EPC2152,EPC2033,EPC9063,EPC9186,EPC9066,EPC8010,EPC9180,EPC2204A,EPC9181,EPC9061,EPC2308,EPC2307,EPC9005C,UP1966E,EPC2203,EPC9004C,EPC2202,EPC2204,EPC2015C,EPC2207,EPC2206,EPC2040,EPC2045,EPC2044,EPC9194,EPC2012C,EPC2019,EPC9049,EPC9203,EPC9204,EPC9205,EPC2252,EPC9166,EPC9167,EPC9047,EPC9201,EPC9041,EPC9162,EPC9163,EPC9165,EPC7020,EPC9160,EPC9040,EPC2024,EPC8009,EPC2302,EPC2001C,EPC2029,EPC2304,EPC2306,EPC2305,EPC8002,EPC2021,EPC9177,EPC2020,EPC9057,EPC9167HC,EPC2023,EPC9179,EPC9058,EPC8004,EPC2022,EPC9059,EPC9173,EPC9174,EPC9055,EPC9176,EPC9170,EPC9050,EPC9171,EPC9172,EPC2010C,EPC2034C,EPC7007,EPC7002,EPC9148,EPC2071,EPC7001,EPC23101,EPC23102,EPC23103,EPC9144,EPC90140,EPC23104,EPC2111,EPC7004,EPC2110,EPC7003,EPC90133,EPC90132,EPC9022,EPC9143,EPC90137,EPC90138,EPC90135,EPC90139,EPC7019,EPC7018,EPC9038,EPC9159,EPC9039,EPC2007C,EPC21603,EPC9156,EPC9036,EPC9157,EPC9037,EPC2088,EPC7014,EPC21601,EPC9158,EPC90122,EPC9151,EPC9031,EPC90123,EPC90120,EPC9153,EPC9033,EPC90121,EPC9154,EPC90124,EPC9150,EPC90128

选型指南 - EPC - 2024/1/3 PDF 英文下载