Boost circuit and switching power supply
A booster circuit and circuit technology, applied in electrical components, regulating electrical variables, instruments, etc., can solve the problems of short-term simultaneous conduction of the first switch group and second switch group, short-circuit of the booster circuit, damage to the booster circuit, etc.
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[0047] With the rapid development of microelectronics technology, the requirements for the boost circuit are getting higher and higher. The voltage boosting circuit realizes voltage boosting mainly by controlling the first switch group and the second switch group therein. When the first switch group is turned off, the second switch group is turned on, and the inductance in the boost circuit stores energy; when the first switch group is turned on, the second switch group is turned off, and the inductance in the boost circuit to charge.
[0048] In order to improve the efficiency of the boost circuit, the on-resistance of the switching elements in the current boost circuit is very small. As a result, when the states of the first switch group and the second switch group are switched, the first switch group and the second switch group may be turned on at the same time for a short time, thus causing the output terminal of the boost circuit to be short-circuited, resulting in A la...
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