An Intelligent Solid State Power Controller with Current Surge Suppression

Abstract

An intelligent solid-state power controller with current surge suppression, including a current sampling circuit, a latch circuit, an overvoltage and overtemperature protection circuit, a current surge suppression circuit and a main power circuit; the current sampling circuit is connected to the The latch circuit is electrically connected to the main power circuit; the latch circuit and the overvoltage and overtemperature protection circuit are respectively electrically connected to the current surge suppression circuit, and the current surge suppression circuit is connected to the main power circuit. The circuit is electrically connected. The beneficial effect of the application is: it has the functions of overvoltage, overtemperature, current surge suppression and switch state feedback, and the circuit is simplified, the number of components is small, and it is convenient for integration or chip design.

Description

technical field [0001] The application belongs to the technical field of power supply and distribution, in particular, it relates to an intelligent solid-state power controller with current surge suppression. Background technique [0002] At present, mechanical relays and solid state relays (SSR) are mostly used for power supply and distribution in aviation and aerospace. Mechanical relays have the disadvantages of large driving current, large weight and volume, slow switching speed, less total switching times, sparks generated by contact contact, and not conducive to intelligence; solid state relay (SSR) is a new type of non-contact relay composed of semiconductor components. Point switching devices, which utilize the switching characteristics of semiconductor power switching devices (transistors, silicon controlled rectifiers, and MOS tubes, etc.), can achieve contactless and sparkless switching on and off of the power distribution bus, with higher reliability and longer l...

AI Technical Summary

Problems solved by technology

The current solid-state power controller (SSPC) is not reliable enough, and the protection ability of electrical equipment is not enough. There are problems of overvoltage, overtemperature, instantaneous large current, and the problem that the switch state cannot be fed back. Equipment and itself bring safety and quality risks

Such a solid-state power controller (SSPC) cannot be used for power supply and distribution in areas with high reliability requirements such as aviation and aerospace due to insufficient reliability, complex circuits, and limited number of components.

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