CN1161754A - Improved variable-voltage CPU voltage regulator - Google Patents
Improved variable-voltage CPU voltage regulator Download PDFInfo
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- CN1161754A CN1161754A CN 95195512 CN95195512A CN1161754A CN 1161754 A CN1161754 A CN 1161754A CN 95195512 CN95195512 CN 95195512 CN 95195512 A CN95195512 A CN 95195512A CN 1161754 A CN1161754 A CN 1161754A
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Abstract
An integrated CPU has an on-board switching voltage regulator with an electrically-erasable programmable read-only memory (EEPROM) electronically accessible for storing a feedback reference coefficient for control. In further embodiments, output voltage is tuned via a second EEPROM storing an electronically accessible value in concert with a solid-state resistor ladder. In other embodiments, signals on interrupt lines to the CPU are monitored to provide a prewarning of impending activity by the CPU requiring dramatically increased current flow. In yet other embodiments, solid-state circuitry is provided to reduce or eliminate capacitors used for dealing with input current surges to the CPU.
Description
The technical field of the invention
The present invention relates to the multi-purpose computer field, such as tabletop machine, portable machine relates in particular to central processing unit and other machine elements stabilized power source is provided.
Background technology of the present invention
As most of technology, computer system power source supply with and the evolution of power management in new concept and the release of new product also be accompanied by many new problems, sometimes even make original problem worse.On computer motherboard, also be faced with same problem for the central processing unit supply power.
It is more and more faster that central processing unit has become, and function from strength to strength, and this makes its loading demand and electrical source consumption also increase to some extent.In addition, people are used in reduction also having done many effort aspect the voltage of the microprocessor of central processing unit and central processing unit.Because low-voltage (for example 3.3 volts of required voltages of commercial microprocessor) just replaces 5 volts of traditional voltage microprocessors, so the adjusting of low-voltage becomes more and more important.
Because high-power when the computing machine incident takes place, heavy current and high-speed also just seems particularly important to the voltage-regulation of new microprocessor.If in processing moment activation high power and generation electric current variation at a high speed at short notice, unless then take adequate measures to avoid or handle this of short duration situation about easily dying, otherwise can cause very big influence to the supply of voltage.
At present, the basic realization of variable voltage central processing unit voltage regulator has three kinds:
1. power supply is supplied with regulator.This precision of method is poor, and the regulating power that intersects is poor, and line loss is also very serious.
2. mainboard line regulator.This method cost is not high, but efficient is low, and reaction velocity is slow.
3. mainboard switch mode regulator.Efficient has had very big improvement, but cost is very high, and reaction velocity is slow.
Fig. 1 is a present technical voltage regulator that adopts and a two voltage central processing unit figure.The voltage of 12 volts of power supply outputs and 5 volts.Like this, 5 volts central processing unit just can directly utilize 5 volts of outputs of power supply unit (PSU), and 3.3 volts central processing unit need be changed by voltage regulator.
In now used method, the self-regulating best precision of machine is 3%, even poorer.Want to make precision to be lower than 3%, its cost meeting is high must be made us being difficult to accepting, and may also need continuous manual adjustments---and this is the unacceptable requirement of personal-machine.
Fig. 3 has shown the details of the switched mode voltage regulator with a resistance or voltage divider of present use.
Obviously, need the improved following several respects that mainly contain in central processing unit voltage adjuster and method: improve regulating power, the control line loss improves reaction velocity and raises the efficiency.
The present invention's general introduction
In specific embodiment proposed by the invention, switched mode voltage regulator has an electric erasable formula programmable read only memory (EEPROM), is used for the coefficient that the store feedback loop voltage regulates.The data stream of one sequence is write register and coefficient is adjusted up to the ideal value that reaches feedback factor by clock signal, should value write electric erasable formula programmable read only memory then by incoming line.
In another embodiment, nowadays the method for the sort of partial pressure gauge regulating device adjusting output voltage of prior art employing is replaced by the electric erasable formula programmable read only memory of outside and a ladder shaped resistance.
In various specific embodiment, regulating device according to the present invention is installed in the central processing unit encapsulation of a multicore sheet on the mainboard, or is integrated into an independently central processing unit chip.Also have certain other embodiments, be mainly used to handle pulsation of current, reduce or remove traditional necessary electric capacity.In another embodiment, voltage regulator is accepted the early warning that arouse machine processed according to the present invention sends.
The present invention has improved efficient greatly, regulating power, and reaction velocity, and reduced line loss and the quick error rate under the situation of change, these all existing technology can't be compared.
Brief description of drawings
Fig. 1 is the block diagram of the central processing unit voltage regulator of prior art.
Fig. 2 is the block diagram of central processing unit voltage regulator according to an embodiment of the invention.
Fig. 3 is the switched mode voltage regulator chip block diagram with resistance or voltage divider of prior art.
But Fig. 4 replaces the part block diagram of the central processing unit voltage regulator of the voltage divider of voltage regulator prior art among Fig. 3 with external electric erasing type programmable read only memory and ladder shaped resistance.
Fig. 5 is based on the block diagram of the embodiment of the invention of the early warning system of arouse machine processed.
Fig. 6 is to use the embodiment of synchronous digital buck converter.
Fig. 7 shows the embodiment of a series of simulated capacitances, and these simulated capacitances are controlled rise time of slowing down switch mode regulator and inductance by electric erasable formula programmable read only memory so that match with rise time of central processing unit.
The preferred embodiments of the present invention
Fig. 2 has shown one and has had the switched mode voltage regulator that can wipe EPROM, stores the required coefficient of feedback control loop voltage-regulation in Electrically Erasable Read Only Memory.By clock signal required digital stream being write register regulates up to obtaining ideal value with the output numerical value to regulator.These values can store in the electric erasable formula programmable read only memory by the circuit (not shown) again.These numerical value not only can forever be read, and can revise freely, and do not need manual adjustment.
In Fig. 4, voltage divider is by the electric erasable formula programmable read only memory of outside and ladder shaped resistance replaces so that regulation voltage output.The input of data and clock value is carried out when system initialization.This circuit can be selected desirable voltage for central processing unit, and electric erasable formula programmable read only memory is programmable.
This circuit can realize on motherboard by being encapsulated in a mode in the multicore sheet, or is integrated in one independently in the chip.This is used to handle central processing unit and to the interior used electric capacity of pulsation that is produced of 100ns left and right sides time that activates (several ampere) several different enhancings is arranged by idle (1/1000 ampere) reducing or removing.
Fig. 5 shows first kind of enhancing.Voltage regulator is accepted the early warning based on arouse machine processed.(SMI) signal on is detected for NMI, INT, and is combined into certain logic (that is, PAL) for the interrupt line of central processing unit.Central processing unit sends the warning of urgent behavior by synthetic thread under the situation that electric current sharply increases, like this, voltage regulator just can take some countermeasures to the anticipatory behavior of central processing unit.
The second, three enhancing can be based upon on first improved basis.In Fig. 6, synchronous digital compensation converter moves on the cycle at the central processing unit clock that separates.In order to allow early warning logic operate as normal, voltage divider is synchronously essential.
The 3rd strengthens (see figure 7) uses a series of simulated capacitances, and they control the rise time of slowing down switched mode voltage regulator and inductance so that mate with the rise time of central processing unit by electric erasable formula programmable read only memory.
Really, for being familiar with in the scope that does not break away from thought of the present invention and category, can making a lot of changes for the those skilled in the art in this field.Such as perhaps some wiring methods that are equal to can cause the same in fact result, and the combined method of integrated circuit component also is diversified.
Claims (1)
1. voltage-regulation single-chip microprocessor central processing unit that is used for multi-purpose computer is characterized in that comprising:
Central processing unit;
Partly link to each other with described central processing unit and the switched mode voltage regulator of a feedback control loop is arranged; And
Link to each other with described voltage regulator and to be used to store the Electrically Erasable Read Only Memory of the feedback reference coefficient of regulating by electric logic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95195512 CN1161754A (en) | 1994-10-07 | 1995-10-06 | Improved variable-voltage CPU voltage regulator |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/319,817 | 1994-10-07 | ||
| CN 95195512 CN1161754A (en) | 1994-10-07 | 1995-10-06 | Improved variable-voltage CPU voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1161754A true CN1161754A (en) | 1997-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95195512 Pending CN1161754A (en) | 1994-10-07 | 1995-10-06 | Improved variable-voltage CPU voltage regulator |
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| CN (1) | CN1161754A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409276C (en) * | 2002-02-08 | 2008-08-06 | 精工爱普生株式会社 | Reference voltage generating circuit and method, display drive circuit and display apparatus |
| CN1732610B (en) * | 2002-12-31 | 2010-08-18 | 英特尔公司 | Device and method for CPU surge reduction and protection |
| CN101517507B (en) * | 2006-09-28 | 2012-01-11 | 英特尔公司 | Voltage regulator with drive override |
| CN108646903A (en) * | 2018-05-18 | 2018-10-12 | 济南浪潮高新科技投资发展有限公司 | A kind of realization radar data processing board CPU core electro dynamic method of adjustment and system |
-
1995
- 1995-10-06 CN CN 95195512 patent/CN1161754A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409276C (en) * | 2002-02-08 | 2008-08-06 | 精工爱普生株式会社 | Reference voltage generating circuit and method, display drive circuit and display apparatus |
| CN1732610B (en) * | 2002-12-31 | 2010-08-18 | 英特尔公司 | Device and method for CPU surge reduction and protection |
| CN101517507B (en) * | 2006-09-28 | 2012-01-11 | 英特尔公司 | Voltage regulator with drive override |
| CN108646903A (en) * | 2018-05-18 | 2018-10-12 | 济南浪潮高新科技投资发展有限公司 | A kind of realization radar data processing board CPU core electro dynamic method of adjustment and system |
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