CN105634272A - Mainboard power supply circuit - Google Patents
Mainboard power supply circuit Download PDFInfo
- Publication number
- CN105634272A CN105634272A CN201610054344.XA CN201610054344A CN105634272A CN 105634272 A CN105634272 A CN 105634272A CN 201610054344 A CN201610054344 A CN 201610054344A CN 105634272 A CN105634272 A CN 105634272A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- power tube
- filter circuit
- mainboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims description 13
- 230000005669 field effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a mainboard power supply circuit, and belongs to the technical field of computer equipment. The mainboard power supply circuit comprises an ATX power supply, a primary filter circuit, a secondary filter circuit and a tertiary filter circuit, wherein the primary filter circuit comprises a first inductor and a first capacitor; the secondary filter circuit comprises a second inductor and a second capacitor; the tertiary filter circuit comprises a third inductor and the second capacitor; an output voltage of the ATX power supply passes through the primary filter circuit and then is transmitted to a first output circuit which is formed by connecting a first power tube, a main control chip, a second power tube and the secondary filter circuit in series; and the output voltage of the ATX power supply passes through the primary filter circuit and then is transmitted to a second output circuit which is formed by connecting a third power tube, the main control chip, a fourth power tube and the tertiary filter circuit in series. The mainboard power supply circuit can become an alternative scheme of an existing mainboard power supply circuit.
Description
Technical field
The present invention relates to computer equipment technical field; Especially a kind of feed circuit of mainboard.
Background technology
Along with popularizing of computer, people increasingly be unable to do without computer, no matter are life or work, and computer has become as the requisite a kind of instrument of people. Power supply is as the vitals of computer, and it is to ensure that can computer the critical component of normal operation.
Computer power mainly has ATX power supply and the big class of BTX power supply two, and ATX power supply is the reference power supply of current computer, but, ATX power supply supply 12 volts of mainboard and 5 volts of unidirectional currents can not be powered directly to CPU, it would be desirable to High Level DC Voltage is converted to low dc voltage by a kind of circuit could provide power supply to mainboard.
Summary of the invention
It is an object of the invention to provide a kind of feed circuit of mainboard, it can become a kind of replacement scheme of existing feed circuit of mainboard.
In order to solve the problems referred to above, the technical solution used in the present invention is: this feed circuit of mainboard, including ATX power supply, the first-level filtering wave circuit being made up of the first inductance and the first electric capacity, the secondary filter circuit being made up of the second inductance and the second electric capacity and the three grades of filter circuits being made up of the 3rd inductance and the second electric capacity; The output voltage of described ATX power supply delivers to the first output circuit that the first power tube, main control chip, the second power tube and described secondary filter circuit connected in series are formed after described first-level filtering wave circuit, and the output voltage of described ATX power supply delivers to the second output circuit that the 3rd power tube, main control chip, the 4th power tube and described three grades of filter circuits series connection are formed after described first-level filtering wave circuit.
In technique scheme, more specifically scheme is it may also is that described first power tube, the second power tube, the 3rd power tube and the 4th power tube are field effect transistor.
Owing to have employed technique scheme, the present invention compared with prior art, has the beneficial effect that
12 volts of power supplys of ATX power supply supply deliver to the circuit being made up of field effect transistor and main control chip by first-level filtering wave circuit, four field effect transistor are led at the control lower whorl conductance of the pulsewidth modulation that main control chip exports, and are then passed through the filtering of secondary filter circuit and three grades of filter circuits and form required voltage and be supplied to mainboard.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Feed circuit of mainboard shown in Fig. 1, including ATX power supply 1, the first-level filtering wave circuit being made up of the first inductance L1 and the first electric capacity C1, the secondary filter circuit being made up of the second inductance L2 and the second electric capacity C2 and the three grades of filter circuits being made up of the 3rd inductance L3 and the second electric capacity C2; The output voltage of ATX power supply 1 delivers to the first power tube VT1, main control chip the 2, second power tube VT2 and the first output circuit of secondary filter circuit connected in series formation after first-level filtering wave circuit, and the output voltage of ATX power supply 1 delivers to the 3rd power tube VT3, main control chip the 2, the 4th power tube VT4 and the second output circuit of three grades of filter circuits series connection formation after first-level filtering wave circuit.
12 volts of power supplys of ATX power supply 1 supply deliver to the circuit being made up of field effect transistor and main control chip 2 by first-level filtering wave circuit, four field effect transistor are led at the control lower whorl conductance of the pulse-width signal that main control chip 2 exports, and are then passed through the filtering of secondary filter circuit and three grades of filter circuits and form required voltage and be supplied to mainboard. Electric power loop adopts heterogeneous power supply can provide electric current more stably, the pulse-width signal sent from main control chip 2 is pulse square wave signal, is shaped as the electric current of similar direct current through LC filter circuit, and the high potential time of square wave is very short, more many mutually, shaping quasi-unidirectional current out is closer to direct current.
Claims (2)
1. a feed circuit of mainboard, including ATX power supply, it is characterized in that: the first-level filtering wave circuit being made up of the first inductance and the first electric capacity, the secondary filter circuit being made up of the second inductance and the second electric capacity and the three grades of filter circuits being made up of the 3rd inductance and the second electric capacity; The output voltage of described ATX power supply delivers to the first output circuit that the first power tube, main control chip, the second power tube and described secondary filter circuit connected in series are formed after described first-level filtering wave circuit, and the output voltage of described ATX power supply delivers to the second output circuit that the 3rd power tube, main control chip, the 4th power tube and described three grades of filter circuits series connection are formed after described first-level filtering wave circuit.
2. feed circuit of mainboard according to claim 1, it is characterised in that: described first power tube, the second power tube, the 3rd power tube and the 4th power tube are field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054344.XA CN105634272A (en) | 2016-01-27 | 2016-01-27 | Mainboard power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054344.XA CN105634272A (en) | 2016-01-27 | 2016-01-27 | Mainboard power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105634272A true CN105634272A (en) | 2016-06-01 |
Family
ID=56048912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610054344.XA Pending CN105634272A (en) | 2016-01-27 | 2016-01-27 | Mainboard power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105634272A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051241A (en) * | 2006-04-04 | 2007-10-10 | 联想（新加坡）私人有限公司 | Power source system and notebook type personal computer |
| CN201142050Y (en) * | 2007-11-30 | 2008-10-29 | 上海云骅电子科技有限公司 | Computer electric power |
| JP2009017749A (en) * | 2007-07-09 | 2009-01-22 | Fujitsu Ten Ltd | Power supply circuit, power supply control device, and power supply device |
| CN101441509A (en) * | 2008-12-22 | 2009-05-27 | 华硕电脑股份有限公司 | Switching power supply circuit and computer system |
| WO2011039794A1 (en) * | 2009-09-29 | 2011-04-07 | 三菱電機株式会社 | Power converter |
-
2016
- 2016-01-27 CN CN201610054344.XA patent/CN105634272A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051241A (en) * | 2006-04-04 | 2007-10-10 | 联想（新加坡）私人有限公司 | Power source system and notebook type personal computer |
| JP2009017749A (en) * | 2007-07-09 | 2009-01-22 | Fujitsu Ten Ltd | Power supply circuit, power supply control device, and power supply device |
| CN201142050Y (en) * | 2007-11-30 | 2008-10-29 | 上海云骅电子科技有限公司 | Computer electric power |
| CN101441509A (en) * | 2008-12-22 | 2009-05-27 | 华硕电脑股份有限公司 | Switching power supply circuit and computer system |
| WO2011039794A1 (en) * | 2009-09-29 | 2011-04-07 | 三菱電機株式会社 | Power converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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| RJ01 | Rejection of invention patent application after publication |