A kind of parallel MOS tube current sharing and short circuit protection circuit
A short-circuit protection circuit and MOS tube technology, applied in the field of electronic circuits and power electronics, can solve the problems of rarely adding MOS tube short-circuit protection function, the protection state of the MOS tube being unable to work, the MOS tube being unable to work, etc. Flow characteristics and protection characteristics, prevention of false protection, and effect of increasing speed
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[0025] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0026] The invention provides a parallel MOS tube current equalization and short circuit protection circuit, which can make the current flowing through each MOS tube equal to the switching speed in the use circuit of MOS tubes in parallel, and when the MOS tubes are short-circuited, use triple The protection method can quickly and effectively detect the current operating state of the MOS, thereby protecting the MOS tube and making the MOS tube damaged as little as possible. This circuit is simple and reliable to build, and occupies a small area of the PCB board, especially suitable for use in occasions that require high PCB size and high protection requirements.
[0027] Such as figure 1 Shown is a schematic diagram of a parallel MOS tube current sharing and short circuit protection circuit. It can be seen from the figure that a parallel MOS ...
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