Motherboard and electronic device using the same

Patent metadata

Field	Value
Publication number	US-9733683-B2
Application number	US-201514736823-A
Country	US
Kind code	B2
Filing date	Jun 11, 2015
Priority date	Jan 21, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A motherboard includes a power module, a display module, a control module, and a protection module. The protection module is coupled to the power module, the display module, and the control module. The control module is capable of outputting a first control signal to control the protection module to connect the power module to the display module to be powered by the power module or disconnect the power module from the display module.

First claim

What is claimed is:

1. A motherboard comprising:
a power module, wherein the power module comprises a power terminal, a fuse, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and a ferrite bead, the power terminal of the power module, the fuse, the ferrite bead, and the fourth capacitor are connected in that order, a node between the ferrite bead and the fuse is coupled to ground through the first capacitor, the second capacitor and the third capacitor coupled in parallel;
a display module;
a control module; and
a protect module coupled to the power module, the display module, and the control module;
wherein the control module is configured to output a first control signal to the protect module; and
the protect module is configured to connect the power module to the display module or disconnect the power module from the display module upon receipt of the first control signal.

2. The motherboard as claim 1 , wherein the protect module comprises a field effect transistor (FET), a gate of the FET is coupled to the control module to receive the first control signal, a source of the FET is coupled to a power terminal of the display module, a drain of the FET is coupled to the power module.

3. The motherboard as claim 2 , wherein the FET is n-channel metal oxide semiconductor FET.

4. The motherboard as claim 2 , wherein the drain of the FET is coupled to a node between the ferrite bead and the fourth capacitor.

5. A motherboard as claim 1 , wherein the control module is capable of outputting a second control signal to control a computer to enter or quit a standby state.

6. A motherboard as claim 1 , wherein the control module is a platform controller.

7. An electronic device, comprising:
a motherboard, comprising:
a power module, wherein the power module comprises a power terminal, a fuse, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and a ferrite bead, the power terminal of the power module, the fuse, the ferrite bead, and the fourth capacitor are connected in that order, a node between the ferrite bead and the fuse is coupled to ground through the first capacitor, the second capacitor and the third capacitor coupled in parallel;
a display module;
a control module, and
a protect module, wherein the protect module is coupled to the power module, the display module, and the control module, the control module is configured to output a first control signal to the protect module, the protect module is configured to connect the power module to the display module or disconnect the power module from the display module upon receipt of the first control signal.

8. The electronic device as claim 7 , wherein the protect module comprises a FET, a gate of the FET is coupled to the control module to receive the first control signal, a source of the FET is coupled to a power terminal of the display module, a drain of the FET is coupled to the power module.

9. The electronic device as claim 8 , wherein the FET is n-channel metal oxide semiconductor FET.

10. The electronic device as claim 9 , wherein the drain of the FET is coupled to a node between the ferrite bead and the fourth capacitor.

11. The electronic device as claim 7 , wherein the control module is capable of outputting a second control signal to control a computer to enter or quit a standby state.

12. The electronic device as claim 7 , wherein the control module is a platform controller.

Assignees

• Hong Fu Jin Prec Ind (Wuhan) Co Ltd
• Hon Hai Prec Ind Co Ltd

Inventors

• Chang Gui
• Chen Chun-Sheng

Classifications

• G06F1/28 Primary

  Supervision thereof, e.g. detecting power-supply failure by out of limits supervision · CPC title

• G06F1/26 Primary

  Power supply means, e.g. regulation thereof (for memories G11C) · CPC title