CN100445929C - Power supply system capable of reducing mutual interference of complex voltage output ports on expanded daughter board - Google Patents
Power supply system capable of reducing mutual interference of complex voltage output ports on expanded daughter board Download PDFInfo
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- CN100445929C CN100445929C CNB2006100085077A CN200610008507A CN100445929C CN 100445929 C CN100445929 C CN 100445929C CN B2006100085077 A CNB2006100085077 A CN B2006100085077A CN 200610008507 A CN200610008507 A CN 200610008507A CN 100445929 C CN100445929 C CN 100445929C
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- end mouth
- daughter board
- output end
- voltage output
- voltage
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Abstract
This invention relates to one power system, which comprises one host board, one extensive board and one cable wire, wherein, the host board is connected to the extensive board through cable wire; the board multiple voltage output terminals output same voltage calibration to separate the power supply path and to connect the separate power supply path by use of multiple power lines to reduce the interference between output terminals.
Description
Technical field
The relevant a kind of power-supply system of the present invention refers to a kind of power-supply system that expands a plurality of voltage output end mouth phase mutual interference on the daughter board that reduces especially.
Background technology
Generally speaking, can reserve the slot of some input/output port on the housing of computer, as universal serial bus slot (USB port), with external connected electronic device at any time.And the input/output port slot of these reservations can be integrated on a slice expansion daughter board (daughter board) usually, expands daughter board and is linked to motherboard (mother board) by cable (cable).
With the USB slot is example, usually have two USB slots on the housing of computer, the voltage quasi position that this two USB slot is exported is identical, is expanding on the daughter board and the power supply supply of this two USB slot can linked together with identical current-carrying plate (power plane) or electric conduction routing (power trace) usually.When one of them USB slot is connected to USB electronic installation and this USB electronic installation under the state of running, if insert a USB electronic installation in another slot suddenly, then can make the voltage quasi position of the USB electronic installation on the slot originally have the phenomenon of moment pressure drop (droop).According to the standard of USB 2.0, the amplitude of this moment pressure drop can not surpass 330 millivolts (mV), to avoid still can't continuing normal operation at the USB electronic installation that operates.
In addition, when two USB electronic installations operated simultaneously, load (loading) difference that is caused during owing to two USB electronic installations runnings also may influence voltage quasi position each other.
See also the synoptic diagram that Fig. 1 and Fig. 2 are respectively power-supply system 1,2 in the prior art.Power-supply system 1 comprises a motherboard 10, and expands a daughter board 30 and a cable 20.Motherboard 10 comprises an electric capacity of voltage regulation 12, is to be coupled to a voltage output end mouth 14.Expand daughter board 30 and comprise two voltage output end mouths 32,34, a voltage input end mouth 31 and a slice current-carrying plate 36, voltage output end mouth 32,34 and voltage input end mouth 31 are connected in current-carrying plate 36 simultaneously.Only use a power lead (power line) 22 to connect the voltage output end mouth 14 and the voltage input end mouth 31 that expands daughter board 30 of motherboard 10 in the cable 20.
The expansion daughter board 30 of power-supply system 2 comprises a voltage input end mouth 33, so the cable among Fig. 2 20 used two power leads 22,24, with voltage output end mouth 14 that connects motherboard 10 respectively and the voltage input end mouth 31,33 that expands daughter board 30.Voltage input end mouth 31,33 and voltage output end mouth 32,34 are connected in current-carrying plate 36 simultaneously.
Can learn by Fig. 1 and Fig. 2, if expand that the voltage output end mouth 32 of daughter board 30 is inserted with the USB electronic installation and under the state of running, if insert a USB electronic installation in voltage output end mouth 34 suddenly, the moment pressure drop phenomena that this insert action caused can directly influence the voltage quasi position of voltage output end mouth 32 as shown in the arrow among Fig. 1 and Fig. 2.Though electric capacity of voltage regulation 12 is arranged on the motherboard 10, but when the moment insert action, electric capacity of voltage regulation 12 is the moment pressure drop of bucking voltage output port 32 immediately, because the inductive effect on the power lead 22,24 (inductance effect) has been offset the effect of electric capacity of voltage regulation 12.
Therefore the solution in the prior art is for increasing electric capacity of voltage regulation in expanding on the daughter board 30.See also Fig. 3 and Fig. 4; Fig. 3 and Fig. 4 are the synoptic diagram of power-supply system 3,4 in the prior art.Power-supply system 3 is set up an electric capacity of voltage regulation 35 (about 22 μ F), be arranged between voltage output end mouth 32,34 and the voltage input end mouth 31,33, and power-supply system 4 is set up two electric capacity of voltage regulation 37,39 (about 220 μ F), is arranged at voltage output end mouth 32,34 respectively.
See also Fig. 5; Fig. 5 is the moment pressure drop form of Fig. 2 to Fig. 4 actual measurement.The moment pressure drop amplitude of Fig. 2 does not meet USB 2.0 standards, though Fig. 3 has added an electric capacity of voltage regulation 35, but still do not meet USB 2.0 standards, and Fig. 4 respectively is provided with electric capacity of voltage regulation 37,39 in voltage output end mouth 32,34, and moment pressure drop amplitude meets the USB2.0 standard.Yet the electric capacity of voltage regulation of setting up is big more, and cost is high more.
Summary of the invention
The object of the present invention is to provide a kind of power-supply system that expands a plurality of voltage output end mouth phase mutual interference on the daughter board that reduces, it comprises: one expands daughter board.Expanding daughter board comprises: a plurality of voltage output end mouths, and its voltage quasi position of exporting is identical; A plurality of voltage input end mouths, each voltage input end mouth is coupled to corresponding voltage output end mouth, and these a plurality of voltage input end mouths are not connected; And plural conductive plate or plural conductive cabling, each current-carrying plate or each electric conduction routing are coupled between the corresponding voltage input end mouth and voltage output end mouth of this expansion daughter board.This power-supply system also comprises a motherboard and a plurality of power leads, and motherboard comprises a voltage output end mouth, and being used for provides power supply to a plurality of voltage input end mouths of this expansion daughter board; Each power lead is coupled between the voltage output end mouth of the corresponding voltage input end mouth of this expansion daughter board and this motherboard.
The present invention also provides a kind of electronic installation that expands a plurality of voltage output end mouth phase mutual interference on the daughter board that reduces, and it comprises: one expands daughter board, motherboard and a plurality of power leads.Expand daughter board and comprise a plurality of voltage output end mouths and a plurality of voltage input end mouth, plural conductive plate or plural conductive cabling, the voltage quasi position that each voltage output end mouth is exported is identical, each voltage input end mouth is coupled to corresponding voltage output end mouth, and each voltage input end mouth is not connected, and each current-carrying plate or each electric conduction routing are coupled between the corresponding voltage input end mouth and voltage output end mouth of this expansion daughter board.One motherboard comprises: a central processing unit, in order to control the running of this electronic installation; One north bridge circuit is coupled to this central processing unit, in order to the control speeder; One south bridge circuit is coupled to north bridge circuit and this expansion daughter board, in order to control low speed device; And a voltage output end mouth, be used for providing power supply to a plurality of voltage input end mouths of this expansion daughter board.Each power lead is coupled between the voltage output end mouth of the corresponding voltage input end mouth of this expansion daughter board and this motherboard.
Description of drawings
Fig. 1 to Fig. 4 is respectively the synoptic diagram of power-supply system in the prior art.
Fig. 5 is the moment pressure drop form of Fig. 2 to Fig. 4 actual measurement.
Fig. 6 and Fig. 7 are respectively the synoptic diagram of power-supply system of the present invention.
Fig. 8 is the moment pressure drop form of Fig. 6 and Fig. 7 actual measurement.
Fig. 9 is the synoptic diagram of electronic installation of the present invention.
Embodiment
See also Fig. 6; Fig. 6 is the synoptic diagram of power-supply system 5 of the present invention.Be different from prior art, the expansion daughter board 40 of power-supply system 5 comprises two voltage output end mouths 42,44,41,43 and two current- carrying plates 46,48 of two voltage input end mouths, voltage output end mouth 42 is connected in current-carrying plate 46 simultaneously with voltage input end mouth 41, and voltage output end mouth 44 is connected in current-carrying plate 48 simultaneously with voltage input end mouth 43.In addition, power lead 22,24 also is connected to voltage input end mouth 41,43.
If suddenly a USB electronic installation is inserted in voltage output end mouth 42, the moment pressure drop phenomena that insert action caused can directly not influence the voltage quasi position of voltage output end mouth 44.Because the phenomenon of moment pressure drop can be passed through current-carrying plate 46, power lead 22, electric capacity of voltage regulation 12, power lead 24 and current-carrying plate 48, just arrive voltage output end mouth 44, this a succession of path can be equivalent to two inductance of series connection (equivalent inductance on the power lead 22,24) and an electric capacity in parallel (electric capacity of voltage regulation 12), moment pressure drop phenomena can be filtered and become littler.
If obtain better effect, can set up electric capacity of voltage regulation in expanding on the daughter board 40.See also Fig. 7; Fig. 7 is the synoptic diagram of the power-supply system 6 of another embodiment of the present invention.Power-supply system 6 is set up electric capacity of voltage regulation 45,47 (about 220 μ F) respectively at voltage output end mouth 42,44.
See also Fig. 8, it is the moment pressure drop form of Fig. 6 and Fig. 7 actual measurement.The power supply feed lines branch that Fig. 6 only will expand on the daughter board 40 comes, and can significantly reduce the amplitude of moment pressure drop, and meets USB 2.0 specifications, adds electric capacity of voltage regulation 45,47 among Fig. 7, can obtain better effect, and moment, voltage drop value was well below 330 millivolts.
Then, power-supply system of the present invention is applied in the electronic installation.See also Fig. 9; Fig. 9 is the synoptic diagram of electronic installation 9 of the present invention.Electronic installation 9 comprises the connectivity port 95,96 and a screen 85 of a central processing unit 91, one north bridge circuits 92, one south bridge circuits 93, the identical voltage swing of a plurality of outputs.Central processing unit 91, north bridge circuit 92 are to be arranged on the motherboard 10 with south bridge circuit 93, and connectivity port 95,96 is arranged on the expansion daughter board 40, connectivity port 95,96 comprises voltage output end mouth 42,44 respectively, cable 20 and the detailed icon that expands daughter board 40 see also Fig. 6 or Fig. 7 among Fig. 9.Central processing unit 91 is the overall operations that are used for controlling electronic installation 9, north bridge circuit 92 is the signal transmission that are used for controlling between speeder (for example display driver circuit 82 and storer 81) and the central processing unit 91, data after screen 85 is handled according to display driver circuit 82, with show image, south bridge circuit 93 is the signal transmission that are used for controlling between low speed device (for example CD-ROM device 83 and hard disc 84) and the north bridge circuit 92.The user can install peripheral device on electronic installation 9 via connectivity port 95,96 (for example usb connecting port or IEEE1394 connectivity port).With the usb connecting port is example, can be provided with a USB controller (USB controller) 94 in the south bridge circuit 93, is used for controlling the data transmission on the usb bus.
Behind the power initiation (power on) of electronic installation 9, electronic installation 9 can be carried out a boot program (power on self test, POST), and then be written into an operating system (operating system, OS), when central processing unit 91 was carried out these operating systems, this operating system can be written into corresponding device according to the hardware components of being installed in the electronic installation 9 and drive formula (device driver) with the running of controlling each hardware components and provide power supply in external electronic installation.The method of supplying of power supply repeats no more in this for the mode of power- supply system 5,6 of the present invention.Electronic installation 9 of the present invention can be a notebook computer (notebook computer), PC (personal computer) or other have the electronic installation of the connectivity port of the identical voltage swing of a plurality of outputs.
In addition, when two USB electronic installations insert in connectivity port 95,96 simultaneously and operate simultaneously, because having divided, the power supply feed lines on the expansion daughter board 40 comes, in the time of therefore also can reducing by two USB electronic installations runnings, because of the different problems that interfere with each other voltage quasi position of load.
A plurality of power supply feed lines that the present invention will expand on the daughter board are separated, and use a plurality of power leads to connect respectively and expand the power source path of separating on the daughter board, by the moment pressure drop effect of the effective inductance of power lead and the electric capacity of voltage regulation filtration fraction on the motherboard.The present invention influences the problem of voltage quasi position each other when in addition, also can reduce by two USB electronic installation runnings.Application of the present invention also can be applicable to as any need outputs on the expansion daughter board of identical voltage level such as IEEE 1394 except USB, and the mode of current-carrying plate also can change the mode of electric conduction routing into.
The above only is preferred embodiment of the present invention, and the variation and the modification of all equivalences of being done according to the application's claim scope all should belong to covering scope of the present invention.
Claims (10)
1. one kind can be reduced the power-supply system that expands a plurality of voltage output end mouth phase mutual interference on the daughter board, comprises:
One expands daughter board, comprises:
A plurality of voltage output end mouths, its voltage quasi position of exporting is identical;
A plurality of voltage input end mouths, each voltage input end mouth are coupled to a corresponding voltage output end mouth, and these a plurality of voltage input end mouths are not connected; And
Plural conductive plate or plural conductive cabling, each current-carrying plate or each electric conduction routing are coupled between the corresponding voltage input end mouth and voltage output end mouth of this expansion daughter board;
One motherboard comprises a voltage output end mouth, and being used for provides power supply to a plurality of voltage input end mouths of this expansion daughter board; And
A plurality of power leads, each power lead are coupled between the voltage output end mouth of the corresponding voltage input end mouth of this expansion daughter board and this motherboard.
2. power-supply system as claimed in claim 1, each the voltage output end mouth that it is characterized in that described expansion daughter board is a universal serial bus port.
3. power-supply system as claimed in claim 1 is characterized in that this motherboard comprises an electric capacity of voltage regulation in addition, and it is coupled to the voltage output end mouth of this motherboard.
4. power-supply system as claimed in claim 1 is characterized in that this expansion daughter board comprises a plurality of electric capacity of voltage regulation in addition, and each electric capacity of voltage regulation is coupled to a corresponding voltage output end mouth of this expansion daughter board.
5. one kind can be reduced the electronic installation that expands a plurality of voltage output end mouth phase mutual interference on the daughter board, comprises:
One expands daughter board, comprise a plurality of voltage output end mouths and a plurality of voltage input end mouth, plural conductive plate or plural conductive cabling, the voltage quasi position that each voltage output end mouth is exported is identical, each voltage input end mouth is coupled to a corresponding voltage output end mouth, and each voltage input end mouth is not connected, and each current-carrying plate or each electric conduction routing are coupled between the corresponding voltage input end mouth and voltage output end mouth of this expansion daughter board;
One motherboard comprises:
One central processing unit is in order to control the running of this electronic installation;
One north bridge circuit is coupled to this central processing unit, in order to the control speeder;
One south bridge circuit is coupled to north bridge circuit and this expansion daughter board, in order to control low speed device; And
One voltage output end mouth is used for providing power supply to a plurality of voltage input end mouths of this expansion daughter board; And
A plurality of power leads, each power lead are coupled between the voltage output end mouth of the corresponding voltage input end mouth of this expansion daughter board and this motherboard.
6. electronic installation as claimed in claim 5, each the voltage output end mouth that it is characterized in that described expansion daughter board is a universal serial bus port.
7. electronic installation as claimed in claim 5 is characterized in that this motherboard comprises an electric capacity of voltage regulation in addition, and it is coupled to the voltage output end mouth of this motherboard.
8. electronic installation as claimed in claim 5 is characterized in that this expansion daughter board comprises a plurality of electric capacity of voltage regulation in addition, and each electric capacity of voltage regulation is coupled to a corresponding voltage output end mouth of this expansion daughter board.
9. electronic installation as claimed in claim 5 is characterized in that this electronic installation is a notebook computer or PC.
10. electronic installation as claimed in claim 5 is characterized in that this north bridge circuit and this south bridge circuit are to be integrated in the one chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100085077A CN100445929C (en) | 2006-02-10 | 2006-02-10 | Power supply system capable of reducing mutual interference of complex voltage output ports on expanded daughter board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100085077A CN100445929C (en) | 2006-02-10 | 2006-02-10 | Power supply system capable of reducing mutual interference of complex voltage output ports on expanded daughter board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101017392A CN101017392A (en) | 2007-08-15 |
| CN100445929C true CN100445929C (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100085077A Expired - Fee Related CN100445929C (en) | 2006-02-10 | 2006-02-10 | Power supply system capable of reducing mutual interference of complex voltage output ports on expanded daughter board |
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| Country | Link |
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| CN (1) | CN100445929C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111857264B (en) * | 2020-07-03 | 2022-04-12 | Oppo广东移动通信有限公司 | Power supply circuit and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6799719B2 (en) * | 2003-02-27 | 2004-10-05 | Lite-On Technology Corporation | Business card reader |
| CN2665802Y (en) * | 2003-11-05 | 2004-12-22 | 杨志元 | Wireless modem apparatus adopting double USB interfaces to supply power |
| JP2005018717A (en) * | 2003-06-24 | 2005-01-20 | System Talks Inc | Connector |
| WO2005011221A1 (en) * | 2003-07-10 | 2005-02-03 | Freecom Technologies Gmbh | Method and device for optimally controlling a high-performance external peripheral unit via standardized interfaces of a personal computer |
| CN1672116A (en) * | 2002-08-21 | 2005-09-21 | 富士通株式会社 | Bus power device and power-source control method |
-
2006
- 2006-02-10 CN CNB2006100085077A patent/CN100445929C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672116A (en) * | 2002-08-21 | 2005-09-21 | 富士通株式会社 | Bus power device and power-source control method |
| US6799719B2 (en) * | 2003-02-27 | 2004-10-05 | Lite-On Technology Corporation | Business card reader |
| JP2005018717A (en) * | 2003-06-24 | 2005-01-20 | System Talks Inc | Connector |
| WO2005011221A1 (en) * | 2003-07-10 | 2005-02-03 | Freecom Technologies Gmbh | Method and device for optimally controlling a high-performance external peripheral unit via standardized interfaces of a personal computer |
| CN2665802Y (en) * | 2003-11-05 | 2004-12-22 | 杨志元 | Wireless modem apparatus adopting double USB interfaces to supply power |
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| Publication number | Publication date |
|---|---|
| CN101017392A (en) | 2007-08-15 |
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