BYM8415_TPC8211 Introduction

The power mos used on electric vehicles is a three-dimensional structure. The mos tube we have seen is actually composed of thousands of small mos tubes in parallel. You may think that one or a few bad moss should easily appear in thousands of small mos. In fact, it is not that easy. , the current manufacturing process basically guarantees the high consistency of various parameters of these small units. Low-power mos is a planar structure.

In simple terms, the motor is driven by the output current of the MOS tube such as NCE80H12. The larger the output current (in order to prevent overcurrent from burning the MOS tube, the controller has limited current protection), the motor torque is strong and the acceleration is powerful, so MOS Tubes play a very important role in electric vehicle controllers.

BYM8415_TPC8211

BYN5265

NCE30H11K NCE3402B NCE30H10AK NCE2304 NCE3404.

As for why not to use depletion-type MOS tubes, it is not recommended to get to the bottom of it. . For these two enhanced MOS tubes, NMOS is more commonly used.

BYS31511 BYH32025A BYS32026A BYP32027A BYF32028A BYF32018A BYD32011Z BYF32090 BYJ32056 BYP32011A

There are three parasitic capacitance parameters in the MOS tube specification, namely: input capacitance Ciss, output capacitance Coss, and reverse transfer capacitance Crss. What do the three capacitance parameters represent in the body of the tube? How did it form? .

BYM8415_TPC8211

SI4808DY-T1-E3

BYM8615 BYH8638 BYN8610A BYM8628 BYN8222 BYM31020 BYS31010 BYJ3104 BYH3105 BYP3109.

The N-channel enhancement mode MOS transistor uses a low-doped P-type semiconductor as the substrate, and forms two heavily doped N+ regions on the substrate by a dispersed method, and then generates a very thin one on the P-type semiconductor. A silicon dioxide insulating layer, and then photolithography is used to etch away the silicon dioxide layer on the upper end of the two heavily doped N+ regions, exposing the N+ regions, and finally on the outer surface of the two N+ regions and the two between them. The surface of silicon oxide is sprayed with a layer of metal film by evaporation or sputtering. These three metal films constitute the three electrodes of the MOS tube, which are called source (S), gate (G) and drain (D) respectively. .

NCE3008M NCE3010S NCE3011E NCE30D0808J NCE3018AS.

BYP31036 BYD31010A BYD31024A BYP31017 BYS31018 BYF3104 BYH3108 BYF3109 BYM31032 BYN31333A .

BYM8415_TPC8211

NCE25TD135LP NCE1608N NCE18ND11U NCE3134 NCE20ND07U.

The lithium battery of electric vehicles can work normally, largely thanks to the lithium battery protection board.

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