CN2237866Y - Host machine board sub-circuit board type central processing unit power supply apparatus - Google Patents
Host machine board sub-circuit board type central processing unit power supply apparatus Download PDFInfo
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- CN2237866Y CN2237866Y CN 95201854 CN95201854U CN2237866Y CN 2237866 Y CN2237866 Y CN 2237866Y CN 95201854 CN95201854 CN 95201854 CN 95201854 U CN95201854 U CN 95201854U CN 2237866 Y CN2237866 Y CN 2237866Y
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Abstract
The utility model relates to a host machine board sub-circuit board type central processing unit power supply apparatus. A 3V or 5V power supply circuit originally used for the CPU on the host machine board is made into the sub circuit board which has a regulating function and is suitable for the required voltages of various CPUs, such as 3V, 3.45V, 3.6V, 4V, etc., so as to be suitable for the voltage variation of the future CPU without modifying or replacing the host machine board. Compared with the common host machine board power supply circuit, the sub-circuit board omits the 3V and 5V detecting circuits. The sub-circuit board does not need the special power supply, so the compatibility of the host machine board to different CPUs is improved and cost is saved.
Description
The utility model relates to the power supply device of CPU (central processing unit) on a kind of motherboard (CPU), specifically, is a kind of power supply device with CPU on the motherboard of the big electric current output of providing of sub-circuit board (Daughter Board) mode.To adapt to following CPU towards needs high-speed, the low-voltage development.
Cpu power supply circuit on the motherboard at present commonly used is respectively equipped with 5V and 3V socket being directly connected to power supply unit, or will be as Fig. 1 or circuit application shown in Figure 2 to motherboard, and makes motherboard that the voltage of 5V or 3V can be provided to CPU.In Fig. 1 a and Fig. 1 b; voltage regulator for the fixed voltage output that utilizes the designed one-tenth of LM2576/LM2576HV integrated circuit (IC) that international semiconductor company (National Semiconductor) produced; wherein number 11 is this LM2576/LM2576HV IC; 12 is input end (Vin); import unregulated voltage, 13 is output terminal (Vo), the required voltage of output through regulating; and each calcspar among Fig. 1 b; the 14th, the error amplifier that gain is fixing, 15 is comparer, 16 is NOR (or non-) door; 17 is driving amplifier; 18 is 3 amperes of voltage adjusters, and 19 is the internal regulation circuit, and 110 is on/off (ON/OFF) circuit; 111 is the 1.23V bandgap reference circuit; 112 is the 52KHz oscillator, and 113 is reset circuit, and 114 is hot halt circuit; 115 is that current-limiting circuit and 116 is load.In the voltage regulation applications of this Fig. 1, its output voltage is respectively: if R
2=1.7K Ω, then Vo=3.3V; If R
2=3.1K Ω is Vo=5V then; If R
2=8.84K Ω is Vo=12V then; If R
2=11.3K Ω is Vo=15V then; With if with R1 open circuit, and, then can be designed to adjustable voltage export the R2 short circuit, its setting range is 1.23V～37V, but has ± 4% error, and produces mistake because of malfunction easily.Therefore when being used to supply with motherboard cpu 3.3V voltage as the voltage regulator of Fig. 1, the R2 value of its indoor design must equal 1.7K Ω.
In supply motherboard cpu 3.3V voltage system shown in Figure 1,, on general the application, also require sometimes still can supply with original 5V voltage on the motherboard to CPU though can reach the purpose (Green PC standard) that computing machine is saved power supply.Therefore, the power-supply circuit on the used on the market now motherboard is designed to mode as shown in Figure 2 again.21 is the 486CPU of Intel Company among the 2nd figure, and 22 is an IC (numbering LT1085), and 23 is a PFET (P-channel field-effect transistor (PEFT) transistor), and 24 be another IC, is controlled the CPU21Vcc that exports to of 3.3V by this IC24.Supply with 5V when the Vcc terminal uses when desire, send height (H) level signal by the VOLDET pin of CPU21 and make the source one of PFET23 drain into path, with voltage to Vcc supply+5V.Otherwise, if VOLDET sends low (L) level signal, then not conducting of PEET and send 3.3V voltage to Vcc by IC22.
Only above-mentioned motherboard cpu power supply circuit commonly used still has inconvenience in the use, for example for promptly adapting to following upgrading computer, wherein because of the CPU power requirement of CPU towards high speed, the development of low-voltage, the increase of required electric current with fixing 3.3V or 5V voltage supply CPU; The motherboard cpu power circuit that is present use-pattern is changed motherboard even promptly must revise circuit when the CPU supply voltage changes, so extremely uneconomical and lose time.
This creator is because the inconvenience of cpu power supply circuit use on the above-mentioned motherboard commonly used.Be that leadoff research is extracted out cpu power supply circuit on the motherboard from motherboard, create into the form of sub-circuit board by different way, cooperate wire jumper to be connected again and can adapt to following upgrading computer easily, the CPU on motherboard supplies with required different voltage exactly.
One of them purpose of the utility model is that a kind of form with sub-circuit board different required voltage of the supply of the CPU on motherboard easily will be provided, to need to change or revise the motherboard cpu power supply device of motherboard after avoiding;
Another purpose of the present utility model is will provide a kind of can save the detection line of 3V and 5V with the form of sub-circuit board, and with electronic components such as FET, to save the motherboard cpu power supply device of material cost;
Another purpose of the present utility model is to provide a kind of form with sub-circuit board can need not specific power supply unit, need only revise this sub-circuit board in case of necessity and must not revise motherboard to save the motherboard cpu power supply device of manufacturing cost;
A purpose more of the present utility model is that a kind of form with sub-circuit board will be provided, and can not be subjected to the restriction of motherboard layout space and cabling, and can save the motherboard cpu power supply device of installing space on the motherboard.
" the board-like cpu power feeding mechanism of the electronic circuit of motherboard " of the present utility model formed and comprised:
One IC (integrated circuit);
Input filter circuit is with the direct supply of desiring to input to this IC go ahead of the rest filtering and then input;
Bias voltage and current protecting circuit are given this IC bias voltage, and the output current of this IC is made overcurrent protection;
Voltage protection circuit is made overvoltage protection with the output voltage of this IC;
Output filter circuit is done the voltage of output that this IC regulates to export load again to after the Filtering Processing;
Voltage-regulating circuit obtains feedback current from this output filter circuit, adds to this IC after voltage division processing, possesses voltage simultaneously and adjusts wire jumper to adjust the output voltage of this IC;
The back coupling filtering circuit gives filtering with this feedback current voltage division signal of obtaining, and then adds to this IC;
Below the composition of this circuit respectively is to be installed on the sub-circuit board, this sub-circuit board can be plugged on the motherboard, and reach the purpose of supplying with the required DC voltage of CPU on this motherboard.
Fig. 1 a is the conventional LM2576/LM2576HV IC that uses international semiconductor company, is designed and manufactured into the circuit diagram that can supply with this motherboard cpu 3.3V voltage on motherboard;
Fig. 1 b is the equivalent circuit diagram of Fig. 1 a, and then shows the internal structure of this LM2576/LM2576HV IC;
Fig. 2 cooperates an EFT control circuit for another output with a power source regulating circuit commonly used, and the voltage that inputs to CPU on the motherboard with control is 3.3V or is the circuit diagram of 5V;
Fig. 3 is an embodiment circuit diagram of the present utility model;
Fig. 4 a is wire jumper (jumper) the male plug wiring diagram of the utility model on motherboard; And being the utility model, Fig. 4 b corresponds to that wire jumper female plug seated connection line chart shows on the sub-circuit board of Fig. 4 a.
Embodiment of the present utility model please refer to shown in Figure 3.Among the figure; 31 are the employed IC that is numbered LM3578A of present embodiment, and wherein the OS of the 3rd pin represents overtravel protection pin, and the E of the 5th pin is expressed as ground connection (earth) pin; the C of the 6th pin is expressed as control (Control) pin, and the CL of the 7th pin is expressed as removing (clear) pin.Square 32 is an input filter circuit, with desire import this IC+filtering of going ahead of the rest of 12V voltage, enable to import reposefully 12V voltage.Square 33 is bias voltage and current protecting circuit; bias voltage and the electric current of supplying with this IC31 amplify protection; for example if just in case the external loading short circuit causes output current when excessive; the 8th pin V+ voltage of IC31 is reduced; and make IC31 send a grid that controls signal to Q1 FET to check the conducting of this Q1 FET from the 6th pin C, make no current output and reach the purpose of current protection.Square 34 is a voltage protection circuit, makes the output voltage of this IC31 be no more than puncture (breakdown) voltage of D1 Zener (Zener) diode, and reaches the purpose of voltage protection.Square 35 is an output filter circuit, and the output DC pressure energy that makes this device is supply load reposefully.Square 36 is a voltage-regulating circuit, obtain feedback current through transporting to the 1st pin position of IC31 after the voltage division processing from this device output terminal, can be used to control the output voltage size of IC31, wherein two jumper terminal J2 and J3 respectively have 3 pins, obtain different voltage output with different pin connection modes.The pin line that J2, J3 are different in present embodiment can get different voltage output, and its corresponding situation is shown in following table ().
Table (one)
More than circuit bank shown in Figure 3 be contained on the sub-circuit board, this sub-circuit board is inserted on the motherboard, so that CPU required voltage on the motherboard, for example 3.3V to be provided, promptly be 2-3 pin short circuit, and the J3 jumper terminal keep open circuit (constant) with the J2 jumper terminal on this sub-circuit board.Therefore if use sub-circuit board of the present utility model to be installed on the main frame, when upgrading computer or desire design use low voltage (as 3.0V) supply motherboard cpu, then needn't change the motherboard circuit, the 2-3 pin short circuit wiring of the J2 jumper terminal on the sub-circuit board need only be removed, change with the short circuit of 1-2 pin and get final product.If desire uses lower voltage (as 2.6V) when motherboard cpu, also needn't change the motherboard circuit again, the voltage-regulating circuit that need only revise on the sub-circuit board partly gets final product, and has therefore reduced the cost of repacking motherboard widely.
Sub-circuit board device of the present utility model is desired to be plugged on the motherboard, and the wiring situation of the grafting wire jumper seat between itself and motherboard as shown in Figure 4.Fig. 4 a is the wiring situation of the public wire jumper socket on the motherboard, and Fig. 4 b is the wiring situation of female wire jumper socket on this sub-circuit board.The 3V voltage of supplying with CPU in this example is sent by the 1st, 3 pins of sub-circuit board with by the 14th, 16 pins.
Use sub-circuit board mode of the present utility model to supply with motherboard cpu voltage, if but need only supply with 5V voltage when CPU, then sub-circuit board of the present utility model can be pulled up (must not use this sub-circuit board) from motherboard, and the male seat on the motherboard shown in Fig. 4 a is utilized wire jumper short circuit the 1st, 2 pin positions, 3rd, 4 pin positions, the 13rd, 14 pin positions and the 15th, 16 pin positions get final product.
The function of the board-like cpu power feeding mechanism of the electronic circuit of motherboard of the present utility model is: (1) can provide 3.0V, 3.3V, 3.45V, 3.6v, 4.0V to the CPU of existing various different kenels ... Deng.(2) development trend that adapts to following CPU can be carried out the preparation that big electric current output or adjustable-voltage are provided.(3) the stable and protective device of CPU electric current and voltage is arranged.(4) wrong plug avoided foot line position is arranged and reach the function of protecting CPU.(5) this device is to design with switch (switching) adjustment mode, thus heat radiation easily and transfer efficiency than higher.
Advantage of the present utility model is:
(1) because can provide different potential circuits, so can not revise or change motherboard because of the change of following CPU voltage to CPU.
(2) because made the sub-circuit board form, therefore omitted the detection line of 3V and 5V, and reached cost-effective purpose than the practice on original motherboard.
(3) following CPU develops towards high-speed low supply voltage, and required relatively electric current will increase, thereby can adapt to various voltage, electric current demand easily after making sub-circuit board, at most also need only revise sub-circuit board and needn't revise motherboard.
(4) because this sub-circuit board is arranged, thus do not need the particular power source supply, and reach another cost-effective purpose.
(5) supply does not need potential device if motherboard is only made 5V, then can omit this sub-circuit board, thereby save the fixed cost of motherboard, has increased competitiveness of product.
(6) layout space of off plate and cabling limit, and also can save the space of main frame owing to use the sub-circuit board mode.
Though the utility model mat embodiment is illustrated, ought to understand under the broad spirit and viewpoint situation that in appended claim, is defined without prejudice to the utility model, various change form or modification all should belong to scope of the present utility model.
Claims (4)
1. the board-like CPU (central processing unit) of the electronic circuit of a motherboard (CPU) power supply device is characterized in that it comprises:
One integrated circuit (31) is imported a direct current power supply;
Bias voltage and current protecting circuit (33) with this integrated circuit bias voltage, and are made overcurrent protection with the output current of this integrated circuit;
Voltage protection circuit (34) is made overvoltage protection with the output voltage of this integrated circuit;
Output filter circuit (35) is done the voltage of output that this integrated circuit is regulated to export load again to after the Filtering Processing;
Voltage-regulating circuit (36) obtains feedback current from this output filter circuit, after voltage division processing, adds to this integrated circuit then, to adjust the output voltage of this integrated circuit;
Back coupling filtering circuit (37) gives filtering with this feedback current voltage division signal of obtaining, and then adds to this integrated circuit;
Below the composition of this circuit respectively is to be installed on the sub-circuit board, and sub-circuit board is plugged on the motherboard.
2. the board-like cpu power feeding mechanism of electronic circuit as claimed in claim 1 is characterized in that it also comprises input filter circuit (32), this direct supply of desiring to input to this integrated circuit is made Filtering Processing earlier, and then input to this integrated circuit.
3. the board-like cpu power feeding mechanism of electronic circuit as claimed in claim 2, it is characterized in that, wherein include a plurality of jumper terminals (32,33) in this voltage-regulating circuit, can make up by the short circuit or the open circuit of each pin on these a plurality of jumper terminals, and obtain different output voltages.
4. the board-like cpu power feeding mechanism of electronic circuit as claimed in claim 2, it is characterized in that, wherein the wiring of corresponding public wire jumper seat pin matches on the wiring system of the female wire jumper seat pin on this sub-circuit board and the motherboard, so that when being plugged in this sub-circuit board device on this motherboard, the CPU system on this motherboard is by the output power supply of this sub-circuit board; And with this sub-circuit board device when this motherboard is pulled up, then can be with the 1st and the 2nd pin short circuit of the public wire jumper seat on this motherboard, the the 3rd and the 4th pin short circuit, the the 13rd and the 14th pin short circuit, with the 15th and the 16th pin short circuit, can supply with the DC voltage of CPU5V on this motherboard by this motherboard itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201854 CN2237866Y (en) | 1995-01-23 | 1995-01-23 | Host machine board sub-circuit board type central processing unit power supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95201854 CN2237866Y (en) | 1995-01-23 | 1995-01-23 | Host machine board sub-circuit board type central processing unit power supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2237866Y true CN2237866Y (en) | 1996-10-16 |
Family
ID=33855173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95201854 Expired - Lifetime CN2237866Y (en) | 1995-01-23 | 1995-01-23 | Host machine board sub-circuit board type central processing unit power supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2237866Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295582C (en) * | 2003-10-06 | 2007-01-17 | 华邦电子股份有限公司 | Supply voltage control circuit of central processing unit |
| CN100367227C (en) * | 2004-03-17 | 2008-02-06 | 联想(北京)有限公司 | System for detecting mainboard power supply |
| CN100458655C (en) * | 2001-09-28 | 2009-02-04 | 技嘉科技股份有限公司 | Power detection circuit and its detection method |
| CN1985232B (en) * | 2004-07-15 | 2011-03-02 | 诺基亚公司 | Adaptive voltage adjustment |
| CN101452724B (en) * | 2007-12-07 | 2011-08-31 | 日立环球储存科技荷兰有限公司 | Test apparatus for data storage device and test method for data storage device |
| CN102681639A (en) * | 2011-03-15 | 2012-09-19 | 宏碁股份有限公司 | Power supply system and method for central processing unit |
| CN101459389B (en) * | 2007-12-14 | 2012-09-19 | 鸿富锦精密工业（深圳）有限公司 | Host board voltage regulating circuit |
-
1995
- 1995-01-23 CN CN 95201854 patent/CN2237866Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458655C (en) * | 2001-09-28 | 2009-02-04 | 技嘉科技股份有限公司 | Power detection circuit and its detection method |
| CN1295582C (en) * | 2003-10-06 | 2007-01-17 | 华邦电子股份有限公司 | Supply voltage control circuit of central processing unit |
| CN100367227C (en) * | 2004-03-17 | 2008-02-06 | 联想(北京)有限公司 | System for detecting mainboard power supply |
| CN1985232B (en) * | 2004-07-15 | 2011-03-02 | 诺基亚公司 | Adaptive voltage adjustment |
| CN101452724B (en) * | 2007-12-07 | 2011-08-31 | 日立环球储存科技荷兰有限公司 | Test apparatus for data storage device and test method for data storage device |
| CN101459389B (en) * | 2007-12-14 | 2012-09-19 | 鸿富锦精密工业（深圳）有限公司 | Host board voltage regulating circuit |
| CN102681639A (en) * | 2011-03-15 | 2012-09-19 | 宏碁股份有限公司 | Power supply system and method for central processing unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |