CN201522682U - Power supply voltage circuit of industrial control computer motherboard - Google Patents
Power supply voltage circuit of industrial control computer motherboard Download PDFInfo
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- CN201522682U CN201522682U CN2009200739785U CN200920073978U CN201522682U CN 201522682 U CN201522682 U CN 201522682U CN 2009200739785 U CN2009200739785 U CN 2009200739785U CN 200920073978 U CN200920073978 U CN 200920073978U CN 201522682 U CN201522682 U CN 201522682U
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- mosfet
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Abstract
The utility model provides a special power supply voltage circuit of an industrial control computer motherboard CPU, which comprises the following structure: the grid electrode of an MOSFET-(2) is connected with a shaping output driver DRV1 pin 1 of an extremely-low output voltage bilinear FET controller SC338 (1); the drain electrode of the MOSFET-(2) is connected with +1.5V power supply voltage; the source electrode of the MOSFET-(2) is connected with a voltage regulator circuit consisting of a detecting and regulating ADJ1 pin 2 of the controller SC338 (1), and a series circuit of a resistor R1 (4) and a resistor R2 (5) so as to obtain +1.05V power supply voltage; and an EN (enabling) pin and a PGD (power generated stable) pin are used for generating and controlling corresponding time sequence signals. The special power supply voltage circuit simplifies the power supply design of the industrial control computer motherboard, and reduces the cost.
Description
Technical field
The utility model belongs to industrial PC mainboard technical field, relates in particular to a kind of supply voltage circuit that is used for industrial PC mainboard CPU.
Background technology
Computer main board adopts the VID technology to make feed circuit of mainboard can provide cpu required supply voltage automatically at present, and does not need artificial setting.The core of this technology is to have increased several VID pins on cpu, PWM controller in the coded signal control Vcore feed circuit of these pin outputs, start back cpu sends to the PWM controller with the VID signal, adjust the dutycycle of PWM controller output pulse signal, force the DC voltage of DC/DC circuit output consistent with the rated voltage of cpu.
The English full name of VRM is Voltage Regulator Module, the Chinese meaning is a Voltage Regulator Module, its mainly as by to direct current on the mainboard-＞(be called for short that DC-＞DC) control of change-over circuit comes for CPU provides stable operating voltage, the situation of change and the sequential of voltage have been made clear and definite requirement to direct current during simultaneously also to launch computer.Can satisfy the requirement of different CPU according to the power circuit of VRM standard formulation, reduce the complicacy of manual intervention, simplify the Control of Voltage design of mu balanced circuit.This VRM standard is that Intel is the voltage standard that oneself CPU formulated specially, and the CPU pin definitions also belongs to the scope of VRM standard.In order to support Prescott processor of future generation, Intel has introduced the VRM10.0 power specifications in research and development I865/875P family chip group.Therefore I865/875P series mainboard is to support VRM10.0 at present, can export the needed normal voltage of Prescott processor fully.
Mainboard produces and regulates CPU voltage in conjunction with the VRM control chip of special use with CPU VID and just solved the voltage that early stage mainboard can not be discerned cpu automatically like this, must regulate the trouble of cpu voltage wire jumper with reference to motherboard manual.But for the Industry Control computer of special use with for the relatively more responsive controlling computer product of cost, such design can increase many costs, and uneconomical.Especially Intel's atom series low power consumption CPU, power consumption is very low, maximum current is below 5 amperes, control power source design compared to complicated expensive CPU VID in conjunction with PWM, directly take the linear voltage regulative mode, can produce more stable voltage, when satisfying the CPU maximum current simultaneously to the requirement of circuit stability.
The utility model content
The purpose of this utility model provides a kind of supply voltage circuit based on the industrial PC mainboard CPU of Intel atom series low power consumption CPU of special use.
The technical solution of the utility model is, a kind of industrial PC motherboard power supply potential circuit based on Intel's atom series low power consumption CPU, comprise utmost point low output voltage bilinearity FET controller SC338, this controller SC338 has input EN1 (enabling) pin 3, input EN2 (enabling) pin 7, power supply produces stabilization signal output PGD1 pin 4 and power supply produces stabilization signal output PGD2 pin 6, it is characterized in that, comprise that also the grid of MOSFET one connects the shaping output driving DRV1 pin one of described utmost point low output voltage bilinearity FET controller SC338, the drain electrode of described MOSFET one connects+the 1.5V supply voltage, the source electrode of described MOSFET one connects the voltage regulator circuit acquisition+1.05V supply voltage of being made up of described controller SC338 detection adjusting ADJ1 pin two and resistance R 1 and resistance R 2 series circuits, the shaping output that the grid of MOSFET two meets described utmost point low output voltage bilinearity FET controller SC338 drives DRV2 pin 9, the drain electrode of described MOSFET two connects+the 1.5V supply voltage, and the source electrode of described MOSFET two connects the voltage regulator circuit acquisition+1.1V supply voltage of being made up of described controller SC338 detection adjusting ADJ2 pin 8 and resistance R 3 and resistance R 4 series circuits.
The resistance of described resistance R 3 is got 12K Ω.
The utility model adopts the linear voltage regulation power source design compared to the PWM power source design, and voltage is more stable.Simplify the power supply design of industrial PC mainboard simultaneously, effectively reduced cost.
Description of drawings
Fig. 1 is the power circuit principle synoptic diagram of the utility model one embodiment
Embodiment
In conjunction with the accompanying drawings, embodiment of the present utility model is as follows.
As shown in Figure 1, SC3381 is the product of SEMTECH company, be utmost point low output voltage bilinearity FET controller SC338 1, this controller SC338 1 has input EN1 (enabling) pin 3, input EN2 (enabling) pin 7, power supply feedback PGD1 pin 4 and power supply feedback PGD2 pin 6, by change to existing circuit structure, make, the shaping output that the grid of MOSFET 1 meets described utmost point low output voltage bilinearity FET controller SC3381 drives the DRV1 pin one, the drain electrode of described MOSFET 1 connects+the 1.5V supply voltage, the source electrode of described MOSFET 1 connects the voltage regulator circuit acquisition+1.05V supply voltage of being made up of described controller SC338 1 detection adjusting ADJ1 pin two and resistance R 14 and resistance R 25 series circuits, the shaping output that the grid of MOSFET 23 meets described utmost point low output voltage bilinearity FET controller SC338 1 drives DRV2 pin 9, the drain electrode of described MOSFET 23 connects+the 1.5V supply voltage, and the source electrode of described MOSFET 23 connects the voltage regulator circuit acquisition+1.1V supply voltage of being made up of described controller SC338 1 detection adjusting ADJ2 pin 8 and resistance R 36 and resistance R 47 series circuits.For obtaining required voltage, the resistance of described resistance R 36 is got 12K Ω.Entire circuit work is controlled by EN (enabling) signal, sends PGD (power work) signal after voltage produces, and two signal collocation are used, and are used for the control circuit sequential.In the cpu power circuit, necessary VRMPWRGD signal of system and PWROK signal are directly exported to system and are directly sent the PWROK signal to system by pin 6 through time-delay 100ms circuit by pin 6.
Claims (2)
1. industrial PC motherboard power supply potential circuit, comprise utmost point low output voltage bilinearity FET controller SC338 (1), this controller SC338 (1) has input EN1 pin 3, input EN2 pin 7, power supply produces stabilization signal output PGD1 pin 4 and power supply produces stabilization signal output PGD2 pin 6, it is characterized in that, comprise that also the grid of MOSFET one (2) connects the shaping output driving DRV1 pin one of described utmost point low output voltage bilinearity FET controller SC338 (1), the drain electrode of described MOSFET one (2) connects+the 1.5V supply voltage, the source electrode of described MOSFET one (2) connects the voltage regulator circuit acquisition+1.05V supply voltage of being made up of described controller SC338 (1) detection adjusting ADJ1 pin two and resistance R 1 (4) and resistance R 2 (5) series circuits, the shaping output that the grid of MOSFET two (3) meets described utmost point low output voltage bilinearity FET controller SC338 (1) drives DRV2 pin 9, the drain electrode of described MOSFET two (3) connects+the 1.5V supply voltage, and the source electrode of described MOSFET two (3) connects the voltage regulator circuit acquisition+1.1V supply voltage of being made up of described controller SC338 (1) detection adjusting ADJ2 pin 8 and resistance R 3 (6) and resistance R 4 (7) series circuits.
2. industrial PC motherboard power supply potential circuit according to claim 1 is characterized in that the resistance of described resistance R 3 (6) is got 12K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200739785U CN201522682U (en) | 2009-05-31 | 2009-05-31 | Power supply voltage circuit of industrial control computer motherboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200739785U CN201522682U (en) | 2009-05-31 | 2009-05-31 | Power supply voltage circuit of industrial control computer motherboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522682U true CN201522682U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200739785U Expired - Fee Related CN201522682U (en) | 2009-05-31 | 2009-05-31 | Power supply voltage circuit of industrial control computer motherboard |
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| Country | Link |
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| CN (1) | CN201522682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847770A (en) * | 2018-05-21 | 2018-11-20 | 威创集团股份有限公司 | A kind of dual output mainboard |
-
2009
- 2009-05-31 CN CN2009200739785U patent/CN201522682U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847770A (en) * | 2018-05-21 | 2018-11-20 | 威创集团股份有限公司 | A kind of dual output mainboard |
| CN108847770B (en) * | 2018-05-21 | 2020-09-04 | 威创集团股份有限公司 | Dual-voltage output mainboard |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20120531 |