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Printed circuit board

A printed circuit board, voltage technology, applied in the direction of circuit devices, emergency protection circuit devices, electrical components, etc., can solve problems such as USB connector system crashes

Inactive Publication Date: 2015-05-27
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, it is necessary to provide a printed circuit board to solve the problem of system crash due to overcurrent or short circuit of the USB connector

Method used

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  • Printed circuit board

Examples

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Embodiment Construction

[0010] Please refer to figure 1 , the preferred embodiment of the printed circuit board 100 of the present invention includes a substrate 10 . The substrate 10 is provided with a 5V voltage connector 11 , a USB connector 12 , a CPU voltage regulation chip 13 , a first wire 15 and a second wire 16 . Other electronic components on the printed circuit board 100 are the same as those of the existing main board, and will not be repeated here. In this embodiment, the 5V voltage connector 11 is arranged on the lower right corner of the substrate 10, the USB connector 12 is arranged on the upper left corner of the substrate 10, and the fuse 14 is arranged on the USB connector In the lower right corner, the CPU voltage regulation chip 13 is disposed below the USB connector 12 and close to the side 17 of the substrate 10 . In other embodiments, the positions of the 5V voltage connector 11 , the USB connector 12 , the CPU voltage regulation chip 13 and the fuse 14 can be set according ...

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PUM

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Abstract

A printed circuit board includes a baseboard, first and second conductive wires, a fuse, a 5V connector, a USB connector, and a CPU. The 5V connector is electrically connected to a first end of the fuse through the first conductive wire, and electrically connected to a voltage pin of the CPU voltage regulating chip through the second conductive wire. A voltage pin of the USB connector is connected to a second end of the fuse. The 5V connector outputs a 5V system voltage to the USB connector through the first conductive wire and the fuse, thus providing a voltage to a USB device, and also outputs the 5V system voltage to the CPU voltage regulating chip through the second conductive wire, thus signaling the CPU voltage regulating chip to convert the 5V system voltage and provide the converted voltage to a CPU.

Description

technical field [0001] The invention relates to a printed circuit board. Background technique [0002] Usually, the 5V system voltage output by the system voltage terminal P5V on the motherboard supplies power to multiple load components, such as USB connectors and CPU voltage regulator chips, through the same power supply path on the printed circuit board. In this case, the 5V voltage output by the system voltage terminal P5V on the motherboard is provided to the USB connector after passing through a fuse arranged near the USB connector, so as to protect the USB connector from overcurrent. However, when the USB connector is over-current or short-circuited, since it takes a while for the fuse to open, the 5V system voltage to which the fuse is connected will be pulled down to zero, which will cause the CPU voltage regulation that receives the voltage through the same power supply path The chip stops working, causing the CPU to be powered off, causing the system to crash. ...

Claims

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Application Information

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IPC IPC(8): G06F1/26
CPCG06F1/266G06F1/28H02H3/087
Inventor 罗世飘郑盛村白家南许寿国
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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