Vehicular computer power supply and surge voltage suppression method thereof

Abstract

The invention discloses a vehicular computer power supply and a surge voltage suppression method thereof. The vehicular computer power supply comprises a safety and reverse connection protection circuit, an input filter circuit, a high voltage surge suppression circuit, three boosted circuits, three DC / DC conversion circuits and an output filter circuit. The safety and reverse connection protection circuit is used for transmitting the first output voltage to the input filter circuit; the input filter circuit is used for transmitting the second output voltage to the high voltage surge suppression circuit; the high voltage surge suppression circuit is used for absorbing the high voltage surge of the second output voltage and outputting the third output voltage; the three boosted circuits are used for boosting the third output voltage during operation of low voltage surge and outputting three paths of fourth output voltage; the three DC / DC conversion circuits are used for isolating and converting the three paths of fourth output voltage into three paths of fifth output voltage; the output filter circuit is used for optimizing the three paths of fifth output voltage and outputs the sixth output voltage with low noise.

Description

technical field [0001] The invention belongs to the technical field of computer power supplies, and in particular relates to a military vehicle-mounted computer power supply and a surge voltage suppression method thereof. Background technique [0002] In the field of computer technology, the improvement of calculation speed and the expansion of functions have increased the power consumption of computer systems, requiring computer power supplies to provide greater power output and high conversion efficiency to ensure reliable operation of the system. At the same time, a military computer is a computer that works in a harsh environment. It must be able to work normally in a wide temperature range and withstand routine tests such as severe shock, vibration, high and low temperature cycles, and electromagnetic compatibility. And due to the special environment of military power supply equipment, the sharp change of large load may cause the voltage of the power supply system to dr...

AI Technical Summary

Problems solved by technology

However, with the increase of the design power of the power supply, the input current is as high as 40A or more when the surge voltage is 6V, which makes the selection of components and layout and wiring in the boost circuit more difficult; the surge voltage of 100V lasts for tens of milliseconds The TVS diode cannot effectively absorb and cause power failure

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