CN101477401B - Multi-phase voltage regulator system - Google Patents
Multi-phase voltage regulator system Download PDFInfo
- Publication number
- CN101477401B CN101477401B CN200910002585XA CN200910002585A CN101477401B CN 101477401 B CN101477401 B CN 101477401B CN 200910002585X A CN200910002585X A CN 200910002585XA CN 200910002585 A CN200910002585 A CN 200910002585A CN 101477401 B CN101477401 B CN 101477401B
- Authority
- CN
- China
- Prior art keywords
- mentioned
- voltage
- phase
- processing unit
- central processing
- 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.)
- Active
Links
Images
Abstract
A multiphase voltage adjuster system comprises a voltage adjuster and a phase control circuit. The voltage adjuster is connected with a central processing unit, can output a load detection voltage, and is in direct proportion to an actual load of the central processing unit; and the phase control circuit is connected with the voltage adjuster. When the load detection voltage rises to a first voltage value, the phase control circuit outputs a first quasi-phase switching signal into the voltage adjuster; and when the load detection voltage drops to a second voltage value, the phase control circuit outputs a second quasi-phase switching signal into the voltage adjuster, wherein, after the voltage adjuster receives the first quasi-phase switching signal, a core voltage output into the CPU is transformed from a N phase to an M phase; after the second quasi-phase switching signal is received, the core voltage output into the CPU is transformed from the M phase to the N phase; and the first voltage value is larger than the second voltage value, and M is larger than N.
Description
Technical field
The present invention is a kind of multi-phase voltage regulator system, refers to a kind of multi-phase voltage regulator system that can switch out of phase with the increase or the minimizing of load especially.
Background technology
In general, the power supply of central processing unit (CPU) is directly provided by power supply unit in the computer system, and main cause is that the required core voltage of CPU (Vcore) is constantly to change according to the size of its load.Because core voltage (Vcore) may strengthen in moment or weaken, power supply unit is directly to react to precipitate change like this.In order to solve this problem, motherboard be provided with the voltage adjuster that aims at the CPU power supply (Voltage Regulator Module, VRM).
Please refer to Fig. 1, it is depicted as single-phase type voltage adjuster (Single-Phase VRM) synoptic diagram on the known computer motherboard.Single-phase type voltage adjuster 10 mainly comprises a pulse width modulation (Pulse Width Modulate, PWM) control module 102, a PWM driver element (PWMDriver) 104, an output unit 106.Wherein, PWM control module 102 can be exported a pulse signal (pwm signal) to PWM driver element 104.
Moreover, guiding logical circuit (Steering LogicCircuit) 1042 and two driving circuits (Driving Circuit) 1044,1046 are arranged in the PWM driver element 104.Guiding logical circuit 1042 can produce first signal and secondary signal according to pwm signal, and after two driving circuits 1044,1046 receive first signal and secondary signal respectively, produces the first drive signal S1 and the second drive signal S2.
Moreover, comprise in the output unit 106 power transistor on (Upper Power FET) M1, once power transistor (Lower Power FET) M2, an outputting inductance (Output Choke) L, a current sensing resistor (Current Sense Resistor) Rs, with an output capacitance (OutputCapacitor) Co.Wherein, last power transistor M1 drain electrode is connected to a power source voltage Vcc, and last power transistor M1 grid receives the first drive signal S1, and last power transistor M1 source electrode is connected to first end of outputting inductance L.Following power transistor M2 drain electrode is connected to first end of outputting inductance L, and following power transistor M2 grid receives the second drive signal S2, and following power transistor M1 source electrode is connected to earth terminal GND.Moreover current sensing resistor Rs is connected between second end and core voltage output terminal Vcore of outputting inductance L.And output capacitance Co is connected between core voltage output terminal Vcore and the earth terminal GND.
Because the driving of the first drive signal S1 and the second drive signal S2 can produce an output current Io to core voltage output terminal Vcore on outputting inductance L and the current sensing resistor Rs.Can learn that according to the size of output current Io CPU is in high running load (heavy duty) or low running load (underloading).Sensing voltage Vs on detecting current sensing resistor Rs and CPU be when being in heavy duty, the pulse width (Pulse Width) that PWM control module 102 can increase pwm signal is in order to improve output current Io; Otherwise the sensing voltage Vs on detecting current sensing resistor Rs learns that CPU is when being in underloading, and PWM control module 102 promptly reduces the pulse width of pwm signal, in order to reduce output current Io.
The phase place of voltage adjuster (Phase) multilist is more shown voltage adjuster being made up of many more PWM driver elements 104 and output unit 106.How can adopt multi-phase voltage regulator (Multi-Phase VRM) on the motherboard now.When the load of CPU was heavier, multi-phase voltage regulator can provide enough core voltage to CPU.
Please refer to Fig. 2, it is depicted as four phase formula voltage adjusters on the known computer motherboard to CPU power supply synoptic diagram.Four phase formula voltage adjusters 20 mainly comprise 202, four PWM driver elements of a PWM control module 204,206,208,210, with four output units 212,214,216,218.
Along with the increase of voltage adjuster number of phases, the degree of stability of CPU also promotes simultaneously.Yet manufacturer also must consider the efficient of voltage adjuster simultaneously, and the voltage adjuster of leggy also can bring many more energy loss more, adds voltage adjuster efficient problem on the low side under low load.When CPU 22 loads are lower than a minimum load, CPU22 can send a power rating indicator (Power StateIndicator, PSI) signal, motherboard promptly requires four phase formula voltage adjusters 20 only to open single-phase CPU22 to be powered, for example only can come power supply, to realize preferableization of voltage adjuster VRM efficient with the core voltage Vcore-1 of PWM driver element 204 collocation output unit 212 first phase places of being exported to CPU22.Yet the known voltage adjuster, only can switch between power supply and single phase power supply mutually four (with four mutually the formula voltage adjuster be example), therefore, still belong to a kind of waste in today of paying attention to energy-saving consumption-reducing.
Summary of the invention
The invention provides a kind of multi-phase voltage regulator system, be applied to a central processing unit, comprise: a voltage adjuster is connected to central processing unit, voltage adjuster is exported load detecting voltage, and load detecting voltage is proportional to an actual loading of central processing unit; An and phase-control circuit, be connected to voltage adjuster, when load detecting voltage rises to one first magnitude of voltage, phase-control circuit is exported one first an accurate phase place switching signal to voltage adjuster, when load detecting voltage dropped to one second magnitude of voltage, phase-control circuit output second an accurate phase place switching signal was to voltage adjuster; Wherein, after receiving first an accurate phase place switching signal, the core voltage that voltage adjuster is exported central processing unit transfers the M phase to mutually by N; After receiving second an accurate phase place switching signal, the core voltage that voltage adjuster is exported central processing unit transfers the N phase to mutually by M, and first magnitude of voltage is greater than this second magnitude of voltage, and M is greater than N.
A kind ofly provide the method for a core voltage to central processing unit, be applied to a voltage adjuster, this method includes: an actual loading of detecting central processing unit; And if actual loading is when rising to one first load value, the core voltage that voltage adjuster is exported this central processing unit changes the M phase into mutually by N, if when the actual loading of central processing unit dropped to one second load value, the core voltage that voltage adjuster is exported central processing unit changed the N phase into mutually by M; Wherein, M is greater than N, and first load value is greater than second load value.
Multi-phase voltage regulator system of the present invention can provide the core voltage of out of phase to central processing unit according to the load of central processing unit reality, so can significantly improve the energy-saving efficiency of voltage adjuster.
Description of drawings
The present invention must be by the detailed description of following drawings and Examples, to obtain more deep understanding, wherein:
Figure 1 shows that the single-phase type voltage adjuster synoptic diagram on the known computer motherboard.
Figure 2 shows that four phase formula voltage adjusters on the known computer motherboard are to central processing unit power supply synoptic diagram.
Figure 3 shows that the block schematic diagram of multi-phase voltage regulator system of the present invention to central processing unit power supply.
Figure 4 shows that the circuit diagram of phase-control circuit of the present invention.
Fig. 5 A and Fig. 5 B are depicted as the sluggish effect synoptic diagram of voltage that load circuit for detecting of the present invention is produced.
Embodiment
Please refer to Fig. 3, it is depicted as the block schematic diagram (with four phase formula voltage regulator systems is example) of multi-phase voltage regulator system of the present invention to the CPU power supply.Multi-phase voltage regulator system 30 mainly comprises a phase-control circuit 302 and a voltage adjuster 304.Phase-control circuit 302 comprise in addition a load circuit for detecting 3022, one first on-off circuit 3024, with a second switch circuit 3026, wherein, first on-off circuit 3024 can be exported two or three phase place switching signals (PWM2-3 signal) to voltage adjuster 304 according to the driving of load circuit for detecting 3022; Second switch circuit 3026 can be exported three or four phase place switching signals (PWM3-4 signal) to voltage adjuster 304 according to the driving of load circuit for detecting 3022.The core voltage Vcore-3 of the core voltage Vcore-1 of voltage adjuster 304 exportable tool first phase places, the core voltage Vcore-2 of tool second phase place, tool third phase position, the core voltage Vcore-4 to CPU 32 of tool the 4th phase place.
When the load of CPU 32 drops to minimum load, CPU 32 will send the PSI signal to voltage adjuster 304.One output current of voltage adjuster 304 monitors that pin position (Imon pin position) is connected to load circuit for detecting 3022, the exportable output current linear voltage (Vmon) in Imon pin position wherein, the output current Io (not shown) that this Vmon direct proportion is exported in 304 couples of CPU 32 of voltage adjuster.For instance, when the output current Io that is exported as 304 couples of CPU 32 of voltage adjuster was 100A, corresponding Vmon was 1V; When the output current Io that is exported as 304 couples of CPU 32 of voltage adjuster was 60A, pairing Vmon was 0.6V.
Multi-phase voltage regulator system 30 of the present invention promptly is to utilize load circuit for detecting 3022 size by detecting current linear voltage (Vmon), extrapolates the present actual loading of CPU 32.Drive first on-off circuit 3024 with the conducting (ON) of second switch circuit 3026 or by (OFF) by CPU 32 present actual loadings again.First on-off circuit 3024 and second switch circuit 3026 can be exported PWM2-3 signal and PWM3-4 signal respectively to voltage adjuster 304.And voltage adjuster 304 can decide power supply number of phases to CPU 32 according to PWM2-3 signal and PWM3-4 signal.
The load of supposing CPU 32 when initial is high running load, load this moment circuit for detecting 3022 can drive first on-off circuit 3024 and be all by (OFF) with second switch circuit 3026 according to the size of detect output Vmon, the PWM2-3 signal that win on-off circuit 3024 and second switch circuit 3026 exports respectively is all first accurate with the PWM3-4 signal, and 304 couples of CPU of voltage adjuster 32 four are powered mutually.When load circuit for detecting 3022 detects Vmon when reducing to one first magnitude of voltage, the load of i.e. expression CPU 32 this moment descends, load this moment circuit for detecting 3022 can drive second switch circuit 3026 and be conducting (ON), and the PWM3-4 signal of the accurate position of second switch circuit 3026 output devices second of conducting (ON) is to voltage adjuster 304, and 304 of voltage adjusters can be by four changing with three relative CPU 32 and powers originally mutually.When load circuit for detecting 3022 detects output Vmon when continuing to reduce to one second magnitude of voltage, the load of i.e. expression CPU 32 this moment is lower, load this moment circuit for detecting 3022 can drive first on-off circuit 3024 and be conducting (ON), and first on-off circuit 3024 of conducting (ON) with the PWM2-3 signal of the accurate position of output device second to voltage adjuster 304, because the PWM2-3 signal goes to the second accurate position by the first accurate position, 304 of voltage adjusters can be changed with two relative CPU 32 power supplies by three-phase originally.When the load of CPU 32 continues to be low to moderate minimum load, central processing unit (CPU) 32 will send the PSI signal to voltage adjuster 304, and 304 of voltage adjusters can change with single-phase CPU 32 power supplies.
Please refer to Fig. 4, it is depicted as the circuit diagram of phase-control circuit 302 of the present invention.Phase-control circuit 302 mainly comprises operational amplifier OP1, OP2, resistance R 1～R10, and diode D1, D2 are with transistor switch SW1, SW2.Positive input terminal+IN1 of operational amplifier OP1 is connected to first supply voltage+3VSB via resistance R 1, and is connected to ground connection GND via resistance R 2; Negative input end-IN1 of operational amplifier OP1 is in order to receive the output current linear voltage Vmon that is exported by voltage adjuster 304; Positive input terminal+IN1 that the output terminal OUT1 of operational amplifier OP1 is connected to the anode (Anode) of diode D1 and operational amplifier OP1 is connected to the negative electrode (Cathode) of diode D1, and is connected to first supply voltage+3VSB via resistance R 5; The base stage B of transistor switch SW1 is connected to the output terminal OUT1 of operational amplifier OP1 via resistance R 7; The collection utmost point C of transistor switch SW1 is connected to a second source voltage+5VSB via resistance R 9, and to voltage adjuster 304 output PWM2-3 signals; The emitter-base bandgap grading E of transistor switch SW1 is connected to ground connection GND.
Moreover positive input terminal+IN2 of operational amplifier OP2 is connected to first supply voltage+3VSB via resistance R 3, and is connected to ground connection GND via resistance R 4; Negative input end-IN2 of operational amplifier OP2 is in order to receive the output current linear voltage Vmon that is exported by voltage adjuster 304; Positive input terminal+IN2 that the output terminal OUT2 of operational amplifier OP2 is connected to the anode of diode D2 and operational amplifier OP2 is connected to the negative electrode of diode D1, and is connected to first supply voltage+3VSB via resistance R 6; The base stage B of transistor switch SW2 is connected to the output terminal OUT2 of operational amplifier OP2 via resistance R 8; The collection utmost point C of transistor switch SW2 is connected to second source voltage+5VSB via resistance R 10, and to voltage adjuster 304 output PWM3-4 signals; The emitter-base bandgap grading E of transistor switch SW2 is connected to ground connection GND.
Operational amplifier OP1, OP2, resistance R 1～R6, the circuit that diode D1, D2 are formed is load circuit for detecting 3022 shown in Figure 3.Transistor switch SW1, resistance R 7, the circuit that R9 formed are first on-off circuit 3024 shown in Figure 3.Transistor switch SW2, resistance R 8, the circuit that R10 formed are second switch circuit 3026 shown in Figure 3.
When output current Io is 80A, this moment, pairing output current linear voltage Vmon was 0.8V.In operational amplifier OP1, because the voltage of positive input terminal+IN1 is that 0.3V is (in the connecting of resistance R 1 and resistance R 2, supply voltage+3VSB is similar to 0.3V in the dividing potential drop of resistance R 2), and the voltage of negative input end-IN1 is 0.8V, so output terminal OUT1 will export a low level voltage (being made as 0V).This 0V via resistance R 7 cause transistor switch SW1 by (OFF), therefore, be high levle+5VSB in order to the PWM2-3 signal that switches between control voltage adjuster 304 two-phase power supplies and three phase supply.
In operational amplifier OP2, because the voltage of positive input terminal+IN2 is that 0.5V is (in the connecting of resistance R 3 and resistance R 4, supply voltage+3VSB is similar to 0.5V in the dividing potential drop of resistance R 4), and the voltage of negative input end-IN2 is 0.8V, so output terminal OUT2 will export a low level voltage (being made as 0V).This 0V via resistance R 8 cause transistor switch SW2 by (OFF), therefore, in order to control voltage adjuster 304 three phase supplies with four mutually between power supply the PWM3-4 signals of switching also be high levle (+5V).(PWM2-3, PWM3-4)=(High, High), 304 couples of CPU 32 4 of voltage adjuster this moment power mutually.
Suppose that because CPU 32 loads descend, this moment, output current Io reduced between between 50A to 30A from 80A, for example 40A.This moment, pairing core current linear voltage Vmon was 0.4V.At this moment, be high levle+5VSB still in order to the PWM2-3 signal that switches between control voltage adjuster 304 two-phase power supplies and three phase supply, do not repeat them here.Yet in operational amplifier OP2 because the voltage of negative input end-IN2 has been lower than the voltage of positive input terminal+IN2, so output terminal OUT2 will export a high levle voltage (be made as+5V).This+5V causes the conducting ON of transistor switch SW2 via resistance R 8, therefore, in order to control voltage adjuster 304 three phase supplies with four mutually between power supply the PWM3-4 signals of switching transfer low level (0V) to.(PWM2-3, PWM3-4)=(High, Low), 304 pairs of CPU three phase supplies of voltage adjuster this moment.That is to say, in case output current Io is brought down below 50A, and making the output terminal OUT2 of operational amplifier OP2 export a high levle voltage, phase-control circuit 302 of the present invention can make three phase supply into by originally four of CPU being powered mutually by PWM3-4 signalisation voltage adjuster 304.
Suppose because the lasting decline of CPU 32 loads, this moment output current Io) reduce between 15A to 30A 20A for example from 40A.Pairing output current linear voltage this moment (Vmon) is 0.2V.At this moment, still be low level (+0) in order to control voltage adjuster 304 three phase supplies with the four PWM3-4 signals that switch between power supply mutually, do not repeat them here.Yet in operational amplifier OP1 because the voltage of positive input terminal+IN1 has been higher than the voltage of negative input end-IN1, so output terminal OUT1 will export a high levle voltage (be made as+5V).This+5V causes the conducting (ON) of transistor switch SW1 via resistance R 7, therefore, transfers low level (0V) in order to the PWM2-3 signal that switches between control voltage adjuster 304 two-phase power supplies and three phase supply.(PWM2-3, PWM3-4)=(Low, Low), 304 pairs of CPU two-phase power supplies of voltage adjuster this moment.That is to say, the core current of CPU is brought down below 30A, and making the output terminal OUT1 of operational amplifier OP1 export a high levle voltage, phase-control circuit 302 of the present invention can make the two-phase power supply into by PWM2-3 signalisation voltage adjuster 304 three phase supplies by script CPU.
Suppose the lasting decline owing to CPU 32 loads, this moment, the load of CPU 32 was low to moderate minimum load, that is output current Io reduces to 15A from 20A.Because the load of CPU 32 is low to moderate minimum load, CPU 32 will send the PSI signal to voltage adjuster 304 this moment, and this moment, voltage adjuster 304 meetings were powered to CPU 32 with single phase place.That is to say that in case CPU 32 exports the PSI signals to voltage adjuster 304, voltage adjuster 304 will make single phase power supply into by the two-phase power supply to CPU originally.
In sum, be brought down below the process of 15A from approaching fully loaded (for example 100A) at output current Io, before output current Io is higher than 50A, (PWM2-3, PWM3-4)=(High, High), voltage adjuster 304 meetings this moment are with four relative CPU 32 power supplies.Reduce between 50A and 30A at output current Io, (PWM2-3, PWM3-4)=(High, Low), this moment, voltage adjuster 304 meetings were with three relative CPU) 32 power supplies.Reduce between 30A and 15A at output current Io, (PWM2-3, PWM3-4)=(Low, Low), voltage adjuster 304 meetings this moment are with two relative CPU32 power supplies.After output current (Io) was reduced to 15A, because the appearance of PSI signal, this moment, voltage adjuster 304 meetings were powered to CPU 32 with single-phase.
Therefore, by phase-control circuit 302 of the present invention, voltage adjuster 304 can be according to the actual loading of CPU32, in four power supply and three phase supply, three phase supply and two-phase power supply, two-phase power supply and single phase power supply intercropping switchings mutually, so can improve known four phase formula voltage adjusters can only switch with the single phase power supply intercropping four.
In addition, for avoiding causing voltage adjuster 304 to switch back and forth between power supply mutually at three phase supply and four owing to output current Io beats between near the 50A back and forth, cause the loss of energy on the contrary, load circuit for detecting 3022 of the present invention has the voltage lag function in addition.As shown in Figure 4, when output current Io drops to the moment that is lower than 50A from being higher than 50A, that is pairing output current linear voltage (Vmon) drops to the moment that is lower than 0.5V from being higher than 0.5V, the high levle voltage that the output terminal OUT2 of operational amplifier OP2 is exported (+5V) also conducting diode D2 simultaneously, make and resistance R 3 and resistance R 6 produce parallel effects (first end of resistance R 3 and resistance R 6 links to each other via the diode D2 of conducting, and resistance R 3 and second end of resistance R 6 are connected supply voltage (+3VSB)) simultaneously.Thus, can cause operational amplifier OP2 positive input terminal (+IN2) voltage instantaneous by 0.5V originally be increased to 0.6V (resistance R 3 earlier with resistance R 6 parallel connections again with configuration that resistance R 4 is connected in ,+3VSB is similar to 0.6V in the dividing potential drop of resistance R 4).Therefore, in case output current Io drop to be lower than 50A and cause voltage adjuster (VRM) 304 by four change into mutually three-phase to central processing unit (CPU) 32 power supply after, output current (Io) must rise to 60A at least again, could make the output terminal (OUT2) of operational amplifier OP2 export a low level voltage (0V) again and come "off" transistor switch SW 2, make the PWM3-4 signal return high levle (+5V) cause voltage adjuster 304 again with four relative CPU 32 power supplies.
Please refer to Fig. 5 A and be depicted as the sluggish effect synoptic diagram of voltage that load circuit for detecting 3022 of the present invention is produced.At first, before output current Io dropped to 50A, voltage adjuster 304 was with four relative CPU32 power supplies.After output current Io dropped to 50A, voltage adjuster 304 changed with three relative CPU 32 power supplies.After output current Io went back up to 50A, voltage adjuster 304 was still with three relative CPU 32 power supplies, and after must waiting until that output current Io is raised to 60A, voltage adjuster 304 just can be with four relative CPU 32 power supplies.Thus, by the voltage lag function that load circuit for detecting 3022 is produced, can avoid output current Io just in up and down drift and produce voltage adjuster 304 back and forth switching between three phase supply or four is powered mutually of critical point 50A.
Same, the voltage lag function that load circuit for detecting 3022 of the present invention had also can be avoided output current Io to beat back and forth between near the 30A and cause voltage adjuster 304 to switch back and forth between two-phase power supply and three phase supply.As shown in Figure 4, when output current Io drops to the moment that is lower than 30A from being higher than 30A, that is pairing output current linear voltage (Vmon) drops to the moment that is lower than 0.3V from being higher than 0.3V, the high levle voltage that the output terminal OUT1 of operational amplifier OP1 is exported (+5V) also conducting diode D1 simultaneously, make and resistance R 1 and resistance R 5 produce parallel effects (first end of resistance R 1 and resistance R 5 links to each other via the diode D1 of conducting, and resistance R 1 and second end of resistance R 5 are connected supply voltage (+3VSB)) simultaneously.Thus, can cause operational amplifier OP1 positive input terminal (+IN1) voltage instantaneous by 0.3V originally be increased to 0.4V (resistance R 1 earlier with resistance R 5 parallel connections again with configuration that resistance R 2 is connected in, + 3VSB is similar to 0.4V in the dividing potential drop of resistance R 2), therefore, in case output current Io is lower than 30A and after causing voltage adjuster 304 to be changed into two relative CPU, 32 power supplies by three-phase dropping to, output current Io must rise to 40A at least again, could make the output terminal OUT1 of operational amplifier OP1 export a low level voltage (0V) again and come "off" transistor switch SW 1, make the PWM2-3 signal return high levle (+5V) cause voltage adjuster 304 again with three relative CPU 32 power supplies.
Please refer to Fig. 5 B, it is depicted as the sluggish effect synoptic diagram of voltage that load circuit for detecting 3022 of the present invention is produced.At first, before output current (Io) dropped to 30A, voltage adjuster 304 was with three relative CPU 32 power supplies.After output current Io dropped to 30A, voltage adjuster (VRM) 304 changed with two relative CPU 32 power supplies.After output current (Io) went back up to 30A, voltage adjuster (VRM) 304 was still with two relative CPU 32 power supplies, and after must waiting until that output current Io is raised to 40A, voltage adjuster (VRM) 304 just can be with three relative CPU 32 power supplies.Thus, can avoid output current Io just in up and down drift and produce voltage adjuster 304 back and forth switching between two-phase power supply or three phase supply of critical point 30A.
Same, constantly rise to the process near fully loaded 100A from being lower than 15A at output current Io, before output current Io rose to 15A, because the appearance of PSI signal, this moment, voltage adjuster 304 can be with single-phase to CPU 32 power supplies.After output current Io rises to 15A and be lower than 40A, because the disappearance of (PWM2-3, PWM3-4)=(Low, Low) and PSI signal, voltage adjuster this moment (VRM) 304 can be powered with two relative CPU 32.After output current (Io) rises to 40A and be lower than 60A, because (PWM2-3, PWM3-4)=(High, Low), this moment, voltage adjuster 304 can be powered with three relative CPU 32.After output current Io was higher than 60A, because (PWM2-3, PWM3-4)=(High, High), voltage adjuster 304 meetings this moment were with four relative CPU 32 power supplies.
Therefore, past known voltage adjuster only can rely on the PSI signal in four power supplies and single phase power supply intercropping switching mutually, and can make that by phase-control circuit 302 of the present invention voltage adjuster 304 can be according to the actual loading of CPU 32, one or two alternate, two or three alternate, with three or four mutually intercropping switch.In addition, the sluggish effect of the voltage that is produced by phase-control circuit 302 of the present invention, can avoid output current Io just critical point up and down drift and produce voltage adjuster 304 two-phase power supply or three phase supply, with back and forth the loss of energy that switching causes between three phase supply or four is powered mutually.
Though the present invention explains with four phase formula voltage adjusters, not as limit, the multi-phase voltage regulator of any phase place of tool all can utilize feature of the present invention to reach switching between out of phase.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this operator; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is when looking being as the criterion that claims define.
Claims (7)
1. a multi-phase voltage regulator system is applied to central processing unit, it is characterized in that, comprises:
Voltage adjuster is connected to above-mentioned central processing unit, above-mentioned voltage adjuster output load detecting voltage, and above-mentioned load detecting voltage is proportional to the actual loading of above-mentioned central processing unit; And
Phase-control circuit, be connected to above-mentioned voltage adjuster, when above-mentioned load detecting voltage rises to first magnitude of voltage, above-mentioned phase-control circuit output first an accurate phase place switching signal is to above-mentioned voltage adjuster, when above-mentioned load detecting voltage dropped to second magnitude of voltage, above-mentioned phase-control circuit output second an accurate phase place switching signal was to above-mentioned voltage adjuster;
Wherein, after receiving above-mentioned first an accurate phase place switching signal, the core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit transfers the M phase to mutually by N; After receiving above-mentioned second an accurate phase place switching signal, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit transfers the N phase to mutually by M, and above-mentioned first magnitude of voltage is greater than above-mentioned second magnitude of voltage, and M is greater than N.
2. multi-phase voltage regulator system as claimed in claim 1, it is characterized in that, wherein when the minimum load value is reduced in above-mentioned actual loading, above-mentioned central processing unit sends the power rating indicator signal to above-mentioned voltage adjuster, and the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit transfers to single-phase.
3. multi-phase voltage regulator system as claimed in claim 2, it is characterized in that, wherein the load when above-mentioned central processing unit rises to above-mentioned minimum load value, and when stopping to export above-mentioned power rating indicator signal, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit transfers two-phase to by single-phase.
4. multi-phase voltage regulator system as claimed in claim 1, it is characterized in that, wherein above-mentioned load detecting voltage monitors that by the output current of above-mentioned voltage adjuster the pin position is exported, and above-mentioned load detecting voltage is proportional to the output current that above-mentioned voltage adjuster is exported above-mentioned central processing unit.
5. multi-phase voltage regulator system as claimed in claim 1 is characterized in that wherein N is more than or equal to 2.
6. one kind provides the method for core voltage to central processing unit, is applied to voltage adjuster, it is characterized in that said method includes:
Detect the actual loading of above-mentioned central processing unit; And
When if above-mentioned actual loading rises to first load value, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit changes the M phase into mutually by N, if when the above-mentioned actual loading of above-mentioned central processing unit dropped to second load value, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit changed the N phase into mutually by M;
Wherein, M is greater than N, and above-mentioned first load value is greater than above-mentioned second load value.
7. the method that central processing unit is provided core voltage as claimed in claim 6, it is characterized in that, wherein also comprise when the minimum load value is reduced in the load of above-mentioned central processing unit, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit is changed into single-phase by two-phase; When the load of above-mentioned central processing unit rose to above-mentioned minimum load value, the above-mentioned core voltage that above-mentioned voltage adjuster is exported above-mentioned central processing unit changed two-phase into by single-phase; And above-mentioned minimum load value is lower than above-mentioned second load value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910002585XA CN101477401B (en) | 2009-01-23 | 2009-01-23 | Multi-phase voltage regulator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910002585XA CN101477401B (en) | 2009-01-23 | 2009-01-23 | Multi-phase voltage regulator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477401A CN101477401A (en) | 2009-07-08 |
| CN101477401B true CN101477401B (en) | 2011-05-18 |
Family
ID=40838126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910002585XA Active CN101477401B (en) | 2009-01-23 | 2009-01-23 | Multi-phase voltage regulator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101477401B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412637A (en) * | 2013-08-12 | 2013-11-27 | 浪潮电子信息产业股份有限公司 | Energy-saving method of phase number variable CPU VR (Central Processing Unit Voltage Regulation) |
| CN105183124A (en) * | 2015-09-25 | 2015-12-23 | 浪潮电子信息产业股份有限公司 | Method for optimizing polyphase power source efficiency of server CPU in real time |
| US9985521B1 (en) | 2017-04-13 | 2018-05-29 | Nanya Technology Corporation | Voltage system |
| CN111324166B (en) * | 2018-12-14 | 2021-09-03 | 技嘉科技股份有限公司 | Power regulator and power regulation method |
| CN110572015A (en) * | 2019-09-16 | 2019-12-13 | 无锡江南计算技术研究所 | VRM phase number expander circuit based on coupling inductance |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345491A (en) * | 2008-05-30 | 2009-01-14 | 华硕电脑股份有限公司 | Frequency conversion multi-phase voltage regulator and its control method |
-
2009
- 2009-01-23 CN CN200910002585XA patent/CN101477401B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345491A (en) * | 2008-05-30 | 2009-01-14 | 华硕电脑股份有限公司 | Frequency conversion multi-phase voltage regulator and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477401A (en) | 2009-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI385508B (en) | Multi-phase voltage regulator module system | |
| CN1230970C (en) | Deal drive buck regulator | |
| CN1674423B (en) | DC-DC converter | |
| CN1812235B (en) | Electronic component for power supply and a power supply device | |
| CN101640481B (en) | Mixed power converter | |
| US9871444B2 (en) | Integrated circuit with configurable control and power switches | |
| US6222352B1 (en) | Multiple voltage output buck converter with a single inductor | |
| CN103780091B (en) | Phase current for multiphase converter balances | |
| CN100571000C (en) | The semiconductor device that comprises dc-dc converter control circuit | |
| CN101477401B (en) | Multi-phase voltage regulator system | |
| CN100438290C (en) | Dc-dc converter and converter device | |
| CN203070144U (en) | Low dropout voltage regulator and electronic circuit | |
| US6222351B1 (en) | Dual supply device with a single direct-current/direct-current converter and capacitive translator | |
| CN101796711B (en) | Method and arrangement for generating current | |
| CN101199105A (en) | Step-down type switching regulator, control circuit thereof, and electronic device using the same | |
| CN102792592A (en) | Control device of electromagnetic inductive load | |
| CN101124713A (en) | Current controlled gate driver for power switches | |
| CN102645945A (en) | Voltage regulator | |
| CN102684292A (en) | Power supply switching circuit | |
| US20050275290A1 (en) | Elimination of recirculation current loss in load-shared switching mode power supplies | |
| CN113872436A (en) | Phase redundancy power supply with ORING field effect transistor current sensing | |
| CN101295204B (en) | Multiphase voltage regulator on motherboard | |
| CN1909347A (en) | Output voltage adjustable dc-dc conversion circuit | |
| CN202008814U (en) | Driving circuit and liquid crystal television | |
| US5916313A (en) | Low cost power converter for a computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |