Unlock instant, AI-driven research and patent intelligence for your innovation.

usb power control circuit

A technology of power control circuit and USB interface, which is applied in the direction of data processing power supply, electrical digital data processing, instruments, etc., and can solve problems such as motherboard failure

Active Publication Date: 2018-10-12
TIANJIN SHENGDAN ELECTRONICS TECH DEV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the USB interface is short-circuited, the current flowing through the USB exceeds the rated value, which will cause the motherboard to fail

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • usb power control circuit
  • usb power control circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] see figure 1 , a USB power supply control circuit 10 is applied in an electronic device, including a USB interface unit 20 , a motherboard 30 , a switch unit 40 and a control unit 50 .

[0012] The USB interface unit 20 includes a power terminal VBUS and a ground terminal GND. The switch unit 40 is connected to the main board 30 , and the power supply terminal VBUS is connected to the switch unit 40 . The power terminal VBUS obtains the power supplied by the USB interface unit 20 from the motherboard 30 when the switch unit 40 is turned on. The control unit 50 is connected to the power terminal VBUS and the switch unit 40 . The control unit 50 controls the switch unit 40 to turn on according to the high level signal of the power supply terminal VBUS, and also controls the switch unit 40 to turn off according to the low level signal of the power supp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A USB power supply control circuit is applied to an electronic device, including a USB interface unit, a main board, a switch unit and a control unit. The USB interface unit includes a power supply terminal VBUS and a ground terminal GND. The switch unit is connected to the main board, and the power supply terminal VBUS is connected to the switch unit. The power supply terminal VBUS obtains power for supplying power to the USB interface unit from the main board when the switch unit is turned on. The control unit is connected with the power supply terminal VBUS and the switch unit. The control unit controls the switch unit to turn on according to the high level signal of the power supply terminal VBUS, and also controls the switch unit to turn off according to the low level signal of the power supply terminal VBUS.

Description

technical field [0001] The invention relates to a USB power supply control circuit. Background technique [0002] The computer is plugged into the USB interface of the computer through a Universal Serial Bus (USB, Universal Serial Bus) to connect with peripheral devices. The USB interface supplies power through the motherboard of the computer when it is connected to a peripheral device. When the USB interface is short-circuited, the current flowing through the USB exceeds the rated value, which will cause the motherboard to fail. Contents of the invention [0003] In view of this, it is necessary to provide a USB power control circuit that prevents damage to the motherboard when the USB interface is short-circuited. [0004] A USB power control circuit, applied to an electronic device, includes a USB interface unit and a main board, the USB interface unit includes a power terminal and a ground terminal, the USB power control circuit also includes a switch unit and a cont...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26
CPCG06F1/266G06F13/4022G06F13/4282
Inventor 叶心陈俊生
Owner TIANJIN SHENGDAN ELECTRONICS TECH DEV