MC3630_AO4840&Special 30V Guide

MOS tubes like NCE80H12 convert the DC power in the battery into AC power when the electric vehicle is running normally, thereby driving the motor to run.

So the stability of the tube is inseparable from the manufacturing process, and poor workmanship may result in the inconsistency of the parameters of these small tubes. Their various switching actions are almost the same. Of course, when they burn out, there must be a small tube that can't bear it first.

MC3630_AO4840&special 30V

IRF8915TRPBF

Figure four types of MOSFETs and their graphical symbols. . Power MOSFETs are generally rarely used in P-channel. Since the mobility of holes is lower than that of electrons, the on-resistance of P-channel transistors is larger than that of N-channel transistors for the same channel size. According to the two points of the conductive channel and the process of channel formation, MOS tubes can be divided into: P-channel enhancement MOS tubes, P-channel depletion MOS tubes, N-channel enhancement MOS tubes and N-channel depletion MOS tubes .

Barrier capacitance: In power semiconductors, when the N-type and P-type semiconductors are combined, the electrons of the N-type semiconductor will partially diffuse into the holes of the P-type semiconductor due to the concentration difference, so they will form on both sides of the junction surface. Space charge area (the electric field formed by the space charge area will resist the diffusion movement, and finally make the diffusion movement reach equilibrium);

There is parasitic capacitance between the three pins of the MOS tube, which is not what we need, but is caused by the limitation of the manufacturing process.

NCE3019AS NCE3045G NCE3400AY NCE30ND07S NCE8601B.

MC3630_AO4840&special 30V

2N7002DW-7-F

MOSFET is a type of FET (the other is JFET), which can be made into enhancement mode or depletion mode, P-channel or N-channel, a total of 4 types, but only the enhancement-mode N-channel MOS is actually used. Tube model and enhanced P-channel MOS tube model, so NMOS is usually mentioned, or PMOS refers to these two.

In order to avoid the problems of too small current-carrying capacity and large on-resistance of MOSFET, two techniques are generally used in high-power MOSFETs. One is to connect millions of low-power MOSFET unit cells in parallel to improve the current-carrying capacity of MOSFET. . Another technique is to intermittently improve the structure of the MOSFET and use a straight V-groove structure. FIG. 3 is a cross-sectional view of the structure of a V-channel MOSFET.

NCE3020K NCE3025Q NCE3035K NCE3025G NCE3030K.

NCE2060K NCE2090K NCE20H11K NCE20H18 NCE20H20.

MC3630_AO4840&special 30V

NCE20ND06 NCE2008N NCE2312 NCE2312A NCE8205A.

The battery cell is equivalent to the heart of the lithium battery, and the lithium battery protection board is mainly composed of a protection chip (or management chip), a MOS tube, a resistor, a capacitor, and a PCB board.

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