Starting-up circuit compatible with ATX (Advanced Technology Extended) power supply and AT (Advanced Technology) power supply and computer

Abstract

The invention is suitable for the field of computer switch power supplies, and provides a starting-up circuit compatible with an ATX (Advanced Technology Extended) power supply and an AT (Advanced Technology) power supply, and a computer. The starting-up circuit comprises a power interface circuit, a power type detecting circuit, a stating-up signal generating circuit and a starting-up sequential circuit; the power type detecting circuit is used for detecting the type of the power supply according to output of the power interface circuit and latching a signal outputted by the power interface circuit; when the power supply detected by the power type detecting circuit is the AT power supply, the stating-up signal generating circuit generates a low-pulse signal; when the power supply detected by the power type detecting circuit is the ATX power supply, the stating-up signal generating circuit waits the starting-up switch to trigger the low-pulse signal; and the output end of the starting-up sequential circuit is connected to a power switch signal of the power interface circuit. With the starting-up circuit provided by the invention, the compatibility problem of the AT power supply and the ATX power supply on the main board is solved effectively; and the starting-up circuit is convenient to use, the timing sequence of the AT power supply mode is strictly controlled so that the starting-up circuit is powered in strict accordance with the mode of the ATC power supply.

Description

technical field [0001] The invention belongs to the field of switching power supplies for computers, and in particular relates to a start-up circuit compatible with both ATX power supplies and AT power supplies and a computer. Background technique [0002] At present, ATX power supplies are commonly used in the field of commercial computers, but in industrial application sites, due to the slow replacement of electronic products, AT power supplies still exist. Because these industrial equipment are relatively expensive, customers often hope to keep the AT power supply when they need to upgrade the motherboard to avoid waste of resources. Therefore, for industrial motherboard manufacturers, it is necessary to carry out compatibility design for the old-generation AT power supply and the new-generation ATX power supply, so that both AT and ATX standard power supplies can be used to meet the requirements of the motherboard. [0003] In the prior art, the AT power supply is compa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a boot circuit compatible with ATX power supply and AT power supply at the same time, aiming to solve the problem that the voltage drop on the diode in the prior art makes the voltage on 5VSB too low, causing the motherboard to work abnormally; and the existing In the technology, when switching the power supply, it is necessary to manually switch the jumper pin, which makes the user inconvenient to use

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