The power supply circuit is suitable for aerospace application

Abstract

The invention discloses a power supply circuit suitable for aerospace application. The circuit comprises a voltage input end, a 12V linear voltage stabilization block, a 5V linear voltage stabilization block, a 12V power utilization unit and a 5V power utilization unit, the circuit also comprises a power resistor, a current sampling circuit and a voltage comparator circuit, wherein the power resistor is used for limiting the current of a post-stage circuit, the current sampling circuit is used for collecting voltage at two ends of the power resistor and outputting sampling voltage after amplification, and the voltage comparator is respectively connected with the output of the current sampling circuit and preset reference voltage, compares the sampling voltage with the reference voltage andoutputs TTL level signals. According to the invention, the problem that the linear voltage regulator module does not meet the first-level derating requirement of aerospace parts is solved, the problem that the voltage regulator module is heated seriously is improved, and the problem of how to protect and detect when a single event locking effect occurs to a part of parts of a circuit is solved. And compared with a DC / DC voltage stabilizer module, the size is smaller, the weight is lighter, the cost is lower, and the space environment adaptability is better.

Description

technical field [0001] The invention relates to a power supply circuit, in particular to a power supply circuit suitable for aerospace applications. Background technique [0002] With the improvement of human living standards, more and more electronic devices appear, such as household appliances, handheld electronic devices, etc., which have become an indispensable part of our life. On the other hand, with the advancement of science and technology, humans begin to explore the mysteries of the universe, so space electronic equipment such as spacecraft, space stations, and communication satellites are also developing rapidly. [0003] However, no matter it is the electronic equipment on the ground or the electronic equipment in the space, the design of the power circuit is inseparable from the normal operation of the electronic equipment. Especially for electronic equipment in space, the design of its power supply system must not only work normally, but also must consider iss...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a solution to the problem of limited use of linear voltage regulator modules in some high power supply voltage occasions and the problem of derating use of components, improve the problem of temperature rise, reduce the size of the circuit board, reduce costs, and when When the single event lock-in effect occurs in the circuit, how to detect the fault and output the telemetry signal, and improve the space environment adaptability and reliability of the circuit. Power supply circuit suitable for aerospace applications

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