Power-on timing sequence control system and method of PCIE (Peripheral Component Interface Express) board card

Abstract

The invention provides a power-on timing sequence control system and method of a PCIE (Peripheral Component Interface Express) board card. The system comprises a self-adaptation circuit, a delaying circuit, an overheating protection unit and a recovering circuit. The method is used for carrying out delaying control on other direct-current power supplies through a direct-current power supply 1 (P1). According to the power-on timing sequence control system and method of the PCIE board card, the board card can be powered on in a shorter time T and each power supply needed by a sub-card can be powered on according to a certain sequence; a sub-card support slot and a self-adaptation manner of supplying power by double power supplies of external power supplies are adopted to support a heat resetting function; and after overheating protection is carried out and the temperature of the sub-card is reduced to a safe range, the sub-card automatically recovers the normal work and a main board does not need to be started again.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a power-on sequence control system and method for a PCIE board. Background technique [0002] Some existing PCIE sub-cards may not be recognized by the motherboard due to power-on sequence design problems, but the motherboard can be recognized after rebooting. The reason is that the sub-card is powered on too slowly and resets abnormally. The reason why many subcards are powered on slowly is due to the following reasons: As the functional requirements of subcards become more and more complex, the design of subcards is gradually complicated, and the types of power supplies on subcards are also increasing. There are also power-on sequence requirements. Most people’s usual power-on sequence control method is to let P1 control P2 to start power-on after P1ok, P2 controls P3 to power-on, and so on. Pn is controlled by P(n-1) In this case, the final power-on time of the Pn module ...

AI Technical Summary

Problems solved by technology

[0004] As the power consumption of the chip on the PCIE card is gradually increasing, only the 75W power supply of the PCIE slot may not be enough to meet the power supply requirements, and some motherboards cannot provide 75W power supply due to various limiting factors during design, resulting in some The designed PCIE daughter card cannot work normally due to insufficient power supply. Usually, some daughter cards reserve a power connector on the daughter card. To switch between power connectors, it is usually selected by soldering different channels, or using jumpers. Both methods have obvious defects. The method of soldering is not flexible, and it may It needs to be adjusted, the consistency is poor, and the operation is cumbersome. It will be inconvenient to solder after the product is formed. Using the jumper method, you need to power off the main board first, and remove the sub-card, and because the sub-card consumes a lot of power, it requires a higher current. Large, so it is necessary to use several jumpers in parallel, which has a great impact on PCB wiring, and it will also make the assembly of some sub-cards inconsistent, which will bring inconvenience to productization, and even when the sub-cards are inconsistent, it will cause confusion and errors, and technical support is troublesome. It is also not very convenient to use, and the use efficiency is low.

If you use the power connector external cable for power supply uniformly, sometimes you can’t do it, because some devices with PCIE cards are not convenient to connect cables, so self-adaptation is more important

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