TAJD336M020RNJ_TAJD336M020RNJ Introduction

MOSFET can be divided into N-channel depletion type and enhancement type; P-channel depletion type and enhancement type four categories. MOS tube is MOSFET, the full name in Chinese is metal-oxide semiconductor field effect transistor. Because the gate of this field effect tube is isolated by an insulating layer, it is also called an insulated gate field effect transistor. .

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Then the high level of the GPIO connected to G must be above 2.8-0.4=2.4V, so that the mos tube can be turned off, and the low level can turn the mos tube on. If the voltage area of the GPIO that controls G is 1.8V, then when the GPIO is high, it is 1.8V, and the GS is 1.8-2.8=-1V, and the mos tube is turned on and cannot be turned off. In this case, the GPIO cannot control the on and off of the mos tube. When GPIO is low, if 0.1V, then GS is 0.1-2.8=-2.7V, and the mos tube is turned on.

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When the G terminal is at a low level, the D and S cannot be turned on, and the motor cannot run. . N-type MOS tube has more application scenarios. Compared with P-type MOS tube, its advantages are as follows: 1. Faster switching speed 2. Higher withstand voltage 3. Larger current passing through. The following is a simple example of N-type MOS tube. The reference circuit of , when the G terminal is connected to a high level, the MOS tube D and S are turned on, at this time the MOS tube is turned on, the current of the motor can pass, and the motor rotates.

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The turn-on sequence can be divided into four time periods to~t1, t1~t2, t2~t3, and t3~t4, and these four time periods have different equivalent circuits.

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