Computer main board and SATA (serial advanced technology attachment) hard disk power supply circuit thereof

Abstract

The invention relates to a computer main board, which comprises a plurality of SATA (serial advanced technology attachment) hard disk interfaces used for connecting SATA hard disks and a plurality of SATA hard disk power supply circuits corresponding to the SATA hard disk interfaces one to one. Each SATA hard disk power supply circuit comprises a delay circuit as well as a first electronic switch, a second electronic switch and a third electronic switch. After the computer main board is turned on and a delay time passes, the delay circuit can control the turn-on of the first electronic switchand further control the turn-on of the second electronic switch and the third electronic switch, so that two voltage output terminals on the computer main board supply power for two power pins of thecorresponding SATA hard disk interfaces respectively, and the delay times of the delay circuits of every two power supply circuits differ from each other. The computer main board and the SATA hard disk power supply circuits of the computer main board can be used for effectively preventing multiple SATA hard disks from simultaneously extracting high transient current.

Description

Technical field [0001] The invention relates to a computer motherboard, in particular to a power supply circuit for supplying power to a SATA (Serial Advanced Technology Attachment) hard disk on the computer motherboard. Background technique [0002] At present, SATA hard disks have been widely used in computers, servers, and other systems that use hard disks. They have the advantages of fast transmission speed, hot-swappable and other advantages. Many systems will install multiple SATA hard disks at the same time. When the system is turned on, all SATA hard disks will draw instantaneous large current at the same time, which may cause the system to crash. The general solution is to use a microprocessor to control the power supply time of the power supply to the SATA hard disk to prevent all SATA hard disks from drawing instantaneous large currents at the same time. However, using a microprocessor to control will cause excessive costs and lead to product competitiveness. reduce. ...

AI Technical Summary

Problems solved by technology

In many systems, multiple SATA hard disks are installed at the same time. When the system is turned on, all the SATA hard disks will draw a momentary high current at the same time, which may cause the system to crash.

The general solution is to use a microprocessor to control the power supply time of the power supply provided to the SATA hard disk, so as to avoid all the SATA hard disks drawing instantaneous large current at the same time, but using the microprocessor to control will cause excessive cost and lead to product competitiveness. reduce

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