CN112068685B - High-power supply circuit of desktop computer adopting external power supply - Google Patents
High-power supply circuit of desktop computer adopting external power supply Download PDFInfo
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- CN112068685B CN112068685B CN202010939209.XA CN202010939209A CN112068685B CN 112068685 B CN112068685 B CN 112068685B CN 202010939209 A CN202010939209 A CN 202010939209A CN 112068685 B CN112068685 B CN 112068685B
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a desktop computer high-power supply circuit adopting an external power supply, which comprises an external adapter J1, an external adapter J2, an external adapter J3, an external adapter J4 and a main board power supply port P1, wherein the output end of the external adapter J1 is connected with a filter capacitor C1 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U1 after being connected with an inductor L1 in series, and meanwhile, the inductor L1 is connected with a D pole of the MOS tube Q1 and a G pole of the MOS tube Q2 after being connected with a resistor R1. The desktop computer high-power supply circuit adopting the external power supply adopts a plurality of external power supplies to respectively carry out multipath direct power supply on the CPU 4+4pin, the display card 6pin and the display card 8pin, further improves the supporting power, reduces the voltage drop caused by overlarge load current of each path of power supply, and ensures the stability of power supply.
Description
Technical Field
The invention relates to the technical field of computer power supply circuits, in particular to a desktop computer high-power supply circuit adopting an external power supply.
Background
The traditional built-in ATX power supply is canceled by the mini computer on the market at present, and an external 12V adapter and an itx direct-plug power supply module are adopted. The power supply technology firstly takes the 12V output of an external adapter as the input voltage of an itx direct-insert power supply, then carries out secondary DC-DC conversion by the itx direct-insert power supply to output 5VSB, 12V,5V and 3.3V, then supplies power to a main board by a 24pin to pin of the direct-insert power supply to a 24pin power supply port of a computer main board, and simultaneously carries out external power supply on a CPU by the 12V output after DC-DC conversion and supplies power to a hard disk by 12V+5V.
The disadvantage of this solution is that the itx direct-plug module is that the 24pin is directly plugged into the 24pin power supply port of the motherboard, and the PCB board must be made as small as possible, otherwise, other components on the motherboard, such as a memory bank, a fan, etc., will be touched. Therefore, due to the limitation of the size of the PCB, only small-size inductance, capacitance and other elements can be adopted, the conversion efficiency of the DC-DC is low, the output current of 12V and 5V after the DC-DC conversion is lower, and especially the output of 12V can only reach about 10A 120W. The external power supply of the CPU and the display card is 12V at present, the power consumption of the CPU is generally 150-200W, the power consumption of the display card is generally 200-300W, and the display card is two parts with the largest power consumption of a computer host, and the output power is far more than the 12V output power of the itx direct-insert power supply after DC-DC conversion. Therefore, the conventional itx direct-plug power supply scheme cannot meet the root cause of a high-power computer host.
Disclosure of Invention
The invention aims to provide a desktop computer high-power supply circuit adopting an external power supply, which adopts a plurality of external power supplies to respectively carry out multipath direct power supply on a CPU 4+4pin, a display card 6pin and a display card 8pin, further improves the supporting power, reduces the voltage drop caused by overlarge load current of each path of power supply and ensures the stability of power supply; the computer has the advantages of good universality and low price, can save the placing space of users, realize the functions of saving energy, reducing emission and reducing maintenance cost, has good practical application value, and can solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the high-power supply circuit of the desktop computer adopting the external power supply comprises an external adapter J1, an external adapter J2, an external adapter J3, an external adapter J4 and a main board power supply port P1, wherein the output end of the external adapter J1 is connected with a filter capacitor C1 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U1 in series after being connected with an inductor L1, meanwhile, the inductor L1 is connected with a D pole of the MOS tube Q1 and a G pole of the MOS tube Q2 after being connected with the resistor R2, and is connected with a circuit interface of the D pole of the MOS tube Q2 and a 4pin of the MOS tube U1, and the pins 5, 6, 7 and 8 of the MOS tube U1 are connected with a capacitor C5 and a capacitor C6 which are connected in parallel and the CPU chip power supply port J5;
the output end of the external adapter J2 is connected with a filter capacitor C2 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U2 in series, meanwhile, the inductor L2 is connected with a resistor R3 and then is connected with a D pole of the MOS tube Q3 and a G pole of the MOS tube Q4, and meanwhile, the inductor L2 is connected with a resistor R4 and then is connected with a D pole of the MOS tube Q4 and a circuit interface connected with a 4pin of the MOS tube U2, and pins 5, 6, 7 and 8 of the MOS tube U2 are connected with a capacitor C7, a capacitor C8 and a display card power supply port J6 which are connected in parallel;
the output end of the external adapter J3 is connected with a filter capacitor C3 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U3 in series, meanwhile, the inductor L3 is connected with a resistor R5 and then is connected with a D pole of a MOS tube Q5 and a G pole of a MOS tube Q6, and meanwhile, the inductor L3 is connected with a resistor R6 and then is connected with a D pole of the MOS tube Q6 and a circuit interface connected with a 4pin of the MOS tube U3, and pins 5, 6, 7 and 8 of the MOS tube U3 are connected with a capacitor C9, a capacitor C10 and a CPU chip power supply port J7 which are connected in parallel;
the output end of the external adapter J4 is connected with the filter capacitor C4 in parallel, and then is connected with pins 1, 2 and 3 of the MOS tube U4 in series, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q7 and the G pole of the MOS tube Q8 after being connected with the resistor R7, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q8 and the circuit interface connected with the pin 4 of the MOS tube U4 after being connected with the resistor R8, and pins 5, 6, 7 and 8 of the MOS tube U4 are connected with the capacitor C11, the capacitor C12 and the display card power supply port J8 in parallel.
Preferably, the 16 pins of the main board power supply port P1 are connected with the G poles of the MOS transistor Q1, the MOS transistor Q3, the MOS transistor Q5 and the MOS transistor Q7.
Preferably, the MOS transistor Q1, the MOS transistor Q3, the MOS transistor Q5, and the MOS transistor Q7 are all N-channel MOS transistors.
Preferably, the MOS tube U1, the MOS tube U2, the MOS tube U3 and the MOS tube U4 are all P-channel MOS tubes.
Compared with the prior art, the invention has the following beneficial effects:
the desktop computer high-power supply circuit adopting the external power supply directly supplies power to the CPU with the largest power demand and the external power supply port of the display card through the external power supply, is separated from the residual power supply of the host, and the residual power supply still adopts a common itx direct-plug power supply. Meanwhile, the CPU and the display card supply and the residual host supply are kept in time sequence synchronization by utilizing the change of the high and low levels of the power ON-off signals of the main board PS_ON#. And adopt a plurality of external power supplies to carry out multichannel direct power supply for CPU 4+4pin, display card 6pin, display card 8pin respectively, further promote the support power, reduce the voltage drop that each way power supply leads to because of the load current is too big, guarantee the stability of power supply. Because the ATX power supply with huge volume is omitted, the power supply heating in the case is reduced, the size of the traditional desktop is reduced, and the desk type computer is not limited by power, has the advantages of energy conservation, emission reduction and low maintenance cost, and has good practical application value.
Drawings
FIG. 1 is a schematic diagram of a circuit of the present invention;
fig. 2 is a schematic diagram of a circuit according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, a desktop computer high-power supply circuit adopting an external power supply includes an external adapter J1, an external adapter J2, an external adapter J3, an external adapter J4 and a main board power supply port P1, wherein an output end of the external adapter J1 is connected with a filter capacitor C1 in parallel, and then connected with pins 1, 2 and 3 of a MOS tube U1 after being connected with an inductor L1 in series, and meanwhile, the inductor L1 is connected with a D pole of the MOS tube Q1 and a G pole of the MOS tube Q2 after being connected with the inductor L1, and meanwhile, the inductor L1 is connected with a circuit interface connected with a D pole of the MOS tube Q2 and a 4pin of the MOS tube U1 after being connected with the resistor R2, and pins 5, 6, 7 and 8 of the MOS tube U1 are connected with a capacitor C5 in parallel and a capacitor C6 and the CPU chip power supply port J5.
The output end of the external adapter J2 is connected with the filter capacitor C2 in parallel, and then is connected with pins 1, 2 and 3 of the MOS tube U2 in series, meanwhile, the inductor L2 is connected with the D pole of the MOS tube Q3 and the G pole of the MOS tube Q4 after being connected with the resistor R3, meanwhile, the inductor L2 is connected with the D pole of the MOS tube Q4 and the circuit interface connected with the 4pin of the MOS tube U2 after being connected with the resistor R4, and pins 5, 6, 7 and 8 of the MOS tube U2 are connected with the capacitor C7, the capacitor C8 and the display card power supply port J6 in parallel.
The output end of the external adapter J3 is connected with the filter capacitor C3 in parallel, and then is connected with pins 1, 2 and 3 of the MOS tube U3 in series, meanwhile, the inductor L3 is connected with the D pole of the MOS tube Q5 and the G pole of the MOS tube Q6 after being connected with the resistor R5, and meanwhile, the inductor L3 is connected with the D pole of the MOS tube Q6 and the circuit interface connected with the 4pin of the MOS tube U3 after being connected with the resistor R6, and pins 5, 6, 7 and 8 of the MOS tube U3 are connected with the capacitor C9, the capacitor C10 and the CPU chip power supply port J7 in parallel.
The output end of the external adapter J4 is connected with the filter capacitor C4 in parallel, and then is connected with pins 1, 2 and 3 of the MOS tube U4 in series, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q7 and the G pole of the MOS tube Q8 after being connected with the resistor R7, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q8 and the circuit interface connected with the pin 4 of the MOS tube U4 after being connected with the resistor R8, and pins 5, 6, 7 and 8 of the MOS tube U4 are connected with the capacitor C11, the capacitor C12 and the display card power supply port J8 which are connected in parallel.
Circuit principle: the 16 pin PS_ON# of the main board power supply port P1 is 5V high level and is input to the gate G end of the N-channel MOS tube Q1, and at the moment, the U of the MOS tube Q1 G >U S D-S of MOS tube Q1 is conducted, and U of MOS tube Q1 is pulled down by resistor R1 D U=0v=q2 G ＝U S =0v, D-S of MOS transistor Q2 is turned off, U of MOS transistor Q2 is pulled down on resistor R2 D U of =12v=tpc 8120 G =12v, due to U of P-channel MOS transistor U1 G =us=12v, S-D cut-off of mos tube U1, U D ＝0V，U D The terminals have no output voltage. U (U) D The terminal is connected to the CPU chip power supply port J7 without a 12V output. Similarly, the other three paths of corresponding output display card power supply ports J6, CPU chip power supply ports J7 and display card power supply ports J8 which are input by the external adapter J2, the external adapter J3 and the external adapter J4 do not have 12V output.
When the computer is in a start-up state, the 16 pin PS_ON# of the main board power supply port P1 is 0V low level and is input to the gate G end of the N-channel MOS tube Q1, and the U of the MOS tube Q1 is the same G ＝U S =0v, D-S of MOS transistor Q1 is turned off, U of MOS transistor Q1 is pulled down on resistor R1 D U=12v=q2 G ＝12V>U S =0v, D-S of MOS transistor Q2 turns on, U of MOS transistor Q2 is pulled down by resistor R2 D U=0v=tpc 8120 G =0v, due to the U of the P-channel MOS transistor U2 G ＝0V<Us=12v, the S-D of the mos tube U2 is turned on, U D ＝12V，U D The terminal outputs a voltage of 12V. The CPU chip power supply port J5 has 12V output. Similarly, the other three paths of corresponding output display card power supply ports J6, CPU chip power supply ports J7 and display card power supply ports J8 which are input by the external adapter J2, the external adapter J3 and the external adapter J4 also have 12V output.
The 16 feet of the main board power supply port P1 are connected with the G poles of the MOS tube Q1, the MOS tube Q3, the MOS tube Q5 and the MOS tube Q7, the MOS tube Q1, the MOS tube Q3, the MOS tube Q5 and the MOS tube Q7 are all N-channel MOS tubes, the MOS tube U1, the MOS tube U2, the MOS tube U3 and the MOS tube U4 are all P-channel MOS tubes, so that the PS_ON# signal of the main board power supply port P1 can be obtained by the 16 feet of the 16 feet, the N-channel MOS tube 2N7002 can be replaced by 2N7000 and NDS7002A, and the P-channel MOS tube TPC8120 can be replaced by TPC8120A, AF4825P and the like.
The desktop computer high-power supply circuit adopting the external power supply directly supplies power to the CPU with the largest power demand and the external power supply port of the display card through the external power supply, is separated from the residual power supply of the host, and the residual power supply still adopts a common itx direct-plug power supply. Meanwhile, the CPU and the display card supply and the residual host supply are kept in time sequence synchronization by utilizing the change of the high and low levels of the power ON-off signals of the main board PS_ON#. And adopt a plurality of external power supplies to carry out multichannel direct power supply for CPU 4+4pin, display card 6pin, display card 8pin respectively, further promote the support power, reduce the voltage drop that each way power supply leads to because of the load current is too big, guarantee the stability of power supply. Because the huge ATX power supply is omitted, the power supply heating in the case is reduced,
the power supply of the part generates heat, is favorable for making the volume of the traditional desktop smaller, can not be limited by power, has the advantages of energy conservation, emission reduction and low maintenance cost, and has good practical application value.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an adopt high-power supply circuit of desktop computer of external power supply, includes external adapter J1, external adapter J2, external adapter J3, external adapter J4 and mainboard power supply port P1, its characterized in that: the output end of the external adapter J1 is connected with a filter capacitor C1 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U1 in series, meanwhile, the inductor L1 is connected with a resistor R1 and then is connected with a D pole of the MOS tube Q1 and a G pole of the MOS tube Q2, and meanwhile, the inductor L1 is connected with a resistor R2 and then is connected with a D pole of the MOS tube Q2 and a circuit interface connected with a 4pin of the MOS tube U1, and pins 5, 6, 7 and 8 of the MOS tube U1 are connected with a capacitor C5 and a capacitor C6 which are connected in parallel and a CPU chip power supply port J5;
the output end of the external adapter J2 is connected with a filter capacitor C2 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U2 in series, meanwhile, the inductor L2 is connected with a resistor R3 and then is connected with a D pole of the MOS tube Q3 and a G pole of the MOS tube Q4, and meanwhile, the inductor L2 is connected with a resistor R4 and then is connected with a D pole of the MOS tube Q4 and a circuit interface connected with a 4pin of the MOS tube U2, and pins 5, 6, 7 and 8 of the MOS tube U2 are connected with a capacitor C7, a capacitor C8 and a display card power supply port J6 which are connected in parallel;
the output end of the external adapter J3 is connected with a filter capacitor C3 in parallel, and then is connected with pins 1, 2 and 3 of a MOS tube U3 in series, meanwhile, the inductor L3 is connected with a resistor R5 and then is connected with a D pole of a MOS tube Q5 and a G pole of a MOS tube Q6, and meanwhile, the inductor L3 is connected with a resistor R6 and then is connected with a D pole of the MOS tube Q6 and a circuit interface connected with a 4pin of the MOS tube U3, and pins 5, 6, 7 and 8 of the MOS tube U3 are connected with a capacitor C9, a capacitor C10 and a CPU chip power supply port J7 which are connected in parallel;
the output end of the external adapter J4 is connected with the filter capacitor C4 in parallel, and then is connected with pins 1, 2 and 3 of the MOS tube U4 in series, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q7 and the G pole of the MOS tube Q8 after being connected with the resistor R7, meanwhile, the inductor L4 is connected with the D pole of the MOS tube Q8 and the circuit interface connected with the pin 4 of the MOS tube U4 after being connected with the resistor R8, and pins 5, 6, 7 and 8 of the MOS tube U4 are connected with the capacitor C11, the capacitor C12 and the display card power supply port J8 in parallel.
2. The desktop high-power supply circuit using an external power supply according to claim 1, wherein: and the 16 pins of the main board power supply port P1 are connected with the G poles of the MOS tube Q1, the MOS tube Q3, the MOS tube Q5 and the MOS tube Q7.
3. The desktop high-power supply circuit using an external power supply according to claim 1, wherein: the MOS tube Q1, the MOS tube Q3, the MOS tube Q5 and the MOS tube Q7 are all N-channel MOS tubes.
4. The desktop high-power supply circuit using an external power supply according to claim 1, wherein: the MOS tube U1, the MOS tube U2, the MOS tube U3 and the MOS tube U4 are all P-channel MOS tubes.
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| CN202010939209.XA CN112068685B (en) | 2020-09-09 | 2020-09-09 | High-power supply circuit of desktop computer adopting external power supply |
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| CN202010939209.XA CN112068685B (en) | 2020-09-09 | 2020-09-09 | High-power supply circuit of desktop computer adopting external power supply |
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| CN112068685B true CN112068685B (en) | 2023-08-18 |
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| WO2013138972A1 (en) * | 2012-03-19 | 2013-09-26 | Ye Jun | Led drive chip and circuit with power compensation |
| WO2017219659A1 (en) * | 2016-06-24 | 2017-12-28 | 深圳创维－Rgb电子有限公司 | Adapter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI493327B (en) * | 2009-05-15 | 2015-07-21 | Asustek Comp Inc | Power control circuit and method of notebook computer |
| US9929730B2 (en) * | 2014-12-03 | 2018-03-27 | Cisco Technology, Inc. | Efficiently managing multiple power supplies |
| US20160327997A1 (en) * | 2015-05-04 | 2016-11-10 | Liang-Chun Lu | Power Distributor of Computer Apparatus |
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2020
- 2020-09-09 CN CN202010939209.XA patent/CN112068685B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013138972A1 (en) * | 2012-03-19 | 2013-09-26 | Ye Jun | Led drive chip and circuit with power compensation |
| WO2017219659A1 (en) * | 2016-06-24 | 2017-12-28 | 深圳创维－Rgb电子有限公司 | Adapter |
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