CN103869853B - Voltage regulation integrated circuit, voltage regulation circuit and voltage regulation method - Google Patents
Voltage regulation integrated circuit, voltage regulation circuit and voltage regulation method Download PDFInfo
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- CN103869853B CN103869853B CN201310055712.9A CN201310055712A CN103869853B CN 103869853 B CN103869853 B CN 103869853B CN 201310055712 A CN201310055712 A CN 201310055712A CN 103869853 B CN103869853 B CN 103869853B
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Abstract
The invention provides a voltage regulating integrated circuit, a voltage regulating circuit and a voltage regulating method. The voltage regulating circuit includes a reference voltage generating unit, an error amplifier, and a control unit. The reference voltage generating unit includes a pulse width modulation reference voltage information providing unit and a voltage adjusting unit. The PWM reference voltage information providing unit is used for providing a PWM reference voltage signal. Then, the voltage adjusting unit receives the pulse width modulation reference voltage signal and provides a reference voltage. The error amplifier outputs an error amplified signal according to the reference voltage and an output feedback voltage. Then, the control unit provides a regulating voltage according to the error amplification signal.
Description
Technical field
The invention relates to a kind of voltage regulation techniques, and relate to a kind of voltage-regulation integrated circuit, voltage regulator circuit and voltage adjusting method especially.
Background technology
In general computer system, voltage identification symbol (the voltageidentificationdefinition that central processing unit produces, VID) can change with its duty, save power consumption dynamically to adjust its operating voltage (or core voltage).When computer system is without the need to power consumption in a large amount of computing, central processing unit can produce voltage identification symbol to voltage regulator according to its duty, makes voltage regulator can reduce the operating voltage of central processing unit according to voltage identification symbol.
The existing integrated circuit for voltage-regulation, has extra function usually, such as, sense decay current function.When extra function carries out Voltage Cortrol if integrated circuit is arranged in pairs or groups, usually need extra pin and need the extra considerable element of collocation could adjust the operating voltage of central processing unit.But this can cause overall circuit area to become large, and increases manufacturing cost.
Summary of the invention
In view of this, the present invention proposes a kind of voltage-regulation integrated circuit, voltage regulator circuit and voltage adjusting method, uses the problem solving prior art and address.
The present invention proposes a kind of voltage regulator circuit, and it comprises reference voltage generation unit, error amplifier and control module.Reference voltage generation unit is in order to provide reference voltage, and reference voltage generation unit comprises width modulation reference voltage information provider unit and voltage-adjusting unit.Width modulation reference voltage information provider unit provides a width modulation reference voltage signal.Voltage-adjusting unit receives width modulation reference voltage signal, and provides reference voltage, and wherein reference voltage is based on width modulation reference voltage signal and produces after being adjusted.Error amplifier has first input end and the second input end, and first input end receives output feedack voltage, and the second input end receives reference voltage.Error amplifier exports an error amplification signal according to reference voltage and output feedack voltage.Control module couples error amplifier, and provides a regulation voltage according to error amplification signal.
In one embodiment of this invention, voltage-adjusting unit comprises integrating circuit.Integrating circuit couples width modulation reference voltage information provider unit.
In one embodiment of this invention, voltage-adjusting unit also comprises adjustment voltage source.Adjustment voltage source is between the output terminal and the second input end of integrating circuit.
In one embodiment of this invention, voltage-adjusting unit also comprises resistance network and adjustment current source.Resistance network is coupled to the output terminal of integrating circuit.Adjustment current source is coupled between resistance network and the second input end.
In one embodiment of this invention, voltage-adjusting unit also comprises pwm unit.Pwm unit is coupled between width modulation reference voltage information provider unit and integrating circuit.
In one embodiment of this invention, voltage-adjusting unit comprises voltage buffer circuit and integrating circuit.Voltage buffer circuit couples width modulation reference voltage information provider unit.Integrating circuit couples voltage buffer circuit.
The present invention separately proposes a kind of voltage-regulation integrated circuit, in order to couple width modulation reference voltage information provider unit and external circuit.Voltage-regulation integrated circuit comprises the first pin to the 5th pin, error amplifier and control module.First pin is in order to couple width modulation reference voltage information provider unit.Second pin, the 3rd pin and the 4th pin, in order to couple external circuit, wherein external circuit provides a reference voltage, and reference voltage is coupled to the 4th pin.5th pin is in order to couple an output feedack voltage.Error amplifier has first input end and the second input end, and first input end receives output feedack voltage, and the second input end receives reference voltage by the 4th pin.Error amplifier reacts on output feedack voltage and is associated with reference voltage and exports an error amplification signal.Control module couples error amplifier, and provides a regulation voltage according to error amplification signal.
In one embodiment of this invention, external circuit comprises integrating circuit.Integrating circuit couples the second pin.
In one embodiment of this invention, external circuit also comprises resistance network.Resistance network couples the 3rd pin.
In one embodiment of this invention, voltage-regulation integrated circuit also comprises adjustment voltage source.Adjustment voltage source is between the 4th pin and the second input end.
In one embodiment of this invention, voltage-regulation integrated circuit also comprises adjustment current source.Adjustment current source is coupled to the 4th pin and the second input end.
In one embodiment of this invention, voltage-regulation integrated circuit is also in order to couple outside bias voltage function setting circuit.Voltage-regulation integrated circuit also comprises the 6th pin.This 6th pin is in order to couple bias voltage function setting circuit, and the 6th pin also couples adjustment current source.
In one embodiment of this invention, voltage-regulation integrated circuit is also in order to couple outside decay function setting circuit.And voltage-regulation integrated circuit also comprises the 7th pin and the 8th pin.7th pin and the 8th pin are in order to couple decay function setting circuit, and the 7th pin and the 8th pin also couple adjustment current source.
In one embodiment of this invention, voltage-regulation integrated circuit also comprises pwm unit.Pwm unit couples the second pin.
In one embodiment of this invention, voltage-regulation integrated circuit also comprises voltage buffer circuit.Voltage buffer circuit couples the first pin, the second pin and the 3rd pin.
The present invention reintroduces a kind of voltage adjusting method, and it comprises the following steps.Adjusted and produced a reference voltage based on a width modulation reference voltage signal.React on an output feedack voltage and be associated with reference voltage, to carry out application condition, exporting an error amplification signal; And provide a regulation voltage according to error amplification signal, wherein output feedack voltage depends on regulation voltage.
In one embodiment of this invention, based on width modulation reference voltage signal and the step adjusted comprise with integral way adjustment width modulation reference voltage signal.
In one embodiment of this invention, based on width modulation reference voltage signal and the step adjusted comprises the pulsewidth of adjustment width modulation reference voltage signal.
In one embodiment of this invention, based on width modulation reference voltage signal and the step adjusted comprises the amplitude of adjustment width modulation reference voltage signal.
In one embodiment of this invention, react on output feedack voltage and the step being associated with reference voltage to comprise reference voltage and and adjust voltage source and to be coupled or reference voltage and adjusts current source and is coupled to produce a coupled signal, application condition is carried out again with coupled signal and output feedack voltage, thus output error amplifying signal.
Based on above-mentioned, the present invention is because adopting novel design, designed voltage-regulation integrated circuit does not need extra pin to carry out dynamic voltage-regulation, thus can effectively solve tradition because of adopt additional pins with cross multicomponent cause circuit area to become large problem.On the other hand, compared to traditional approach, the circuit area that voltage regulator circuit of the present invention or method use can be smaller, and element uses number less, therefore can reduce manufacturing cost.
It is to be understood that above-mentioned general description and following embodiment are only exemplary and illustrative, its can not limit the present invention for advocate scope.
Accompanying drawing explanation
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schematic diagram of the voltage regulator circuit according to one embodiment of the invention;
Fig. 2 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention;
Fig. 3 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention;
Fig. 4 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention;
Fig. 5 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention;
Fig. 6 is the schematic diagram of the voltage-regulation integrated circuit according to one embodiment of the invention;
Fig. 7 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Fig. 8 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Fig. 9 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Figure 10 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Figure 11 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Figure 12 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Figure 13 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention;
Figure 14 is depicted as the process flow diagram of the voltage adjusting method of one embodiment of the invention.
Description of reference numerals:
100,100A ~ 100D: voltage regulator circuit;
110: reference voltage generation unit;
120: width modulation reference voltage information provider unit;
130,130A ~ 130D: voltage-adjusting unit;
132: integrating circuit;
134: resistance network;
136: pwm unit;
138: voltage buffer circuit;
140: error amplifier;
150: control module;
510,510A ~ 510G: voltage-regulation integrated circuit;
520: width modulation reference voltage information provider unit;
530: external circuit;
532: integrating circuit;
534: resistance network;
540: error amplifier;
550: control module;
560: voltage buffer circuit;
570: bias voltage function setting circuit;
572: current adjustment unit;
580: decay function setting circuit;
582: current sense and current lens unit;
590,590A, 590B: pwm unit;
594A, 594B: adjustment signal generation unit;
C: electric capacity;
GND: ground;
I
aDJ: adjustment current source;
J
1: the first pin;
J
2: the second pin;
J
3: the 3rd pin;
J
4: the 4th pin;
J
5: the 5th pin;
J
6: the 6th pin;
J
7: the 7th pin;
J
8: the 8th pin;
J
oUT: output connecting pin;
R1 ~ R6: resistance;
S
vID: width modulation reference voltage signal;
V
aDJ: adjustment voltage source;
V
cOMP: error amplification signal;
V
dD, V
r: operating voltage;
V
fB: output feedack voltage;
V
rEF: reference voltage;
V
rEG: regulation voltage;
S1401 ~ S1403: each step of the voltage adjusting method of one embodiment of the invention.
Embodiment
With detailed reference to embodiments of the invention, and the example of described embodiment is described in the accompanying drawings.In addition, in graphic and embodiment, element/component that is identical or like numerals will is used to represent identical or similar portions.
Fig. 1 is the schematic diagram of the voltage regulator circuit according to one embodiment of the invention.Refer to Fig. 1.Voltage regulator circuit 100 comprises reference voltage generation unit 110, error amplifier 140 and control module 150.Function for each square shown in Fig. 1 illustrates as follows.
Reference voltage generation unit 110 is in order to provide a reference voltage V
rEF, and reference voltage generation unit 110 comprises width modulation reference voltage information provider unit 120 and voltage-adjusting unit 130.First, width modulation reference voltage information provider unit 120 provides a width modulation reference voltage signal S according to the duty of itself
vID.Voltage-adjusting unit 130 receives width modulation reference voltage signal S
vID, and this reference voltage V is provided
rEF, wherein reference voltage is V
rEFbased on width modulation reference voltage signal S
vIDand produced after being adjusted.
Error amplifier 140 has first input end (inverting input) and the second input end (non-inverting input), and first input end receives an output feedack voltage V
fB, the second input end receives reference voltage V
rEF.Error amplifier 140 is according to reference voltage V
rEFwith output feedack voltage V
fBand export an error amplification signal V
cOMP.Control module 150 couples the output of error amplifier 140.Finally, control module 150 is according to error amplification signal V
cOMPand required regulation voltage V is provided
rEG, wherein output feedack voltage V
fBdepend on regulation voltage V
rEG.
Based on above-mentioned, the voltage regulator circuit 100 of the present embodiment takes novel design, and can carry out dynamic voltage-regulation.
Next, one of ordinary skill in the art are made to be readily appreciated that and to be modified as dissimilar voltage regulator circuit by with following multiple embodiment.
Clearer, Fig. 2 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention.Refer to Fig. 2.Voltage regulator circuit 100A is the change type based on voltage regulator circuit 100.Voltage-adjusting unit 130A comprises integrating circuit 132 and adjustment voltage source V
aDJ.Integrating circuit 132 can be made up of resistance R1 and electric capacity C, and wherein one end of resistance R1 couples one end of the other end coupling capacitance C of width modulation reference voltage information provider unit 120, resistance R1, and the other end of electric capacity C then couples ground GND.Adjustment voltage source V
aDJbe coupled between the output terminal of integrating circuit 132 and the second input end of error amplifier 140, can be used to adjustment reference voltage V
rEFvoltage quasi position.
Fig. 3 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention.Refer to Fig. 3.Voltage regulator circuit 100B is another change type based on voltage regulator circuit 100.Voltage-adjusting unit 130B can comprise integrating circuit 132, resistance network 134 and adjustment current source I
aDJ.Integrating circuit 132 couples width modulation reference voltage information provider unit 120.Resistance network 134 is made up of resistance R2 to R4.Resistance network 134 is coupled to the output terminal of integrating circuit 132.Adjustment current source I
aDJbe coupled between resistance network 134 and the second input end of error amplifier 140.Resistance network 134 also can be used to adjustment reference voltage V
rEFvoltage quasi position.
Fig. 4 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention.Refer to Fig. 4.Voltage regulator circuit 100C is another change type based on voltage regulator circuit 100.Voltage-adjusting unit 130C comprises integrating circuit 132 and pwm unit 136.Pwm unit 136 is coupled between width modulation reference voltage information provider unit 120 and integrating circuit 132.Pwm unit 136 is in order to width modulation reference voltage signal S
vIDcarry out the pulse-length modulation of digital type, and the pulse after adjustment is width modulation reference voltage signal S originally
vIDwith the summation of extra pulse.Pulse after this adjustment just can be used to adjustment reference voltage V via integrating circuit 132 again
rEFvoltage quasi position.
Fig. 5 is the schematic diagram of the voltage regulator circuit according to another embodiment of the present invention.Refer to Fig. 5.Voltage regulator circuit 100D is another change type based on voltage regulator circuit 100.Voltage-adjusting unit 130D comprises integrating circuit 132 and voltage buffer circuit 138.Voltage buffer circuit 138 is coupled between width modulation reference voltage information provider unit 120 and integrating circuit 132.Voltage buffer circuit 138 can be used to adjustment width modulation reference voltage signal S
vIDamplitude.
Fig. 6 is the schematic diagram of the voltage-regulation integrated circuit according to one embodiment of the invention.Refer to Fig. 6.Voltage-regulation integrated circuit 510 is in order to couple width modulation reference voltage information provider unit 520 and external circuit 530.Width modulation reference voltage information provider unit 520 provides a width modulation reference voltage signal S according to the duty of itself
vID.Each element shown in Fig. 6 is illustrated as follows.
Voltage-regulation integrated circuit 510 comprises the first to the 5th pin J
1~ J
5, error amplifier 540, control module 550 and output connecting pin J
oUT.First pin J
1in order to couple described width modulation reference voltage information provider unit 510.Second to the 4th pin J
2~ J
4in order to couple external circuit 530.External circuit 530 provides reference voltage V
rEF, and reference voltage V
rEFbe coupled to the 4th pin J
4.5th pin J
5in order to couple an output feedack voltage V
fB.Error amplifier 540 has first input end (inverting input) and the second input end (non-inverting input), and first input end wherein receives this output feedack voltage V
fB, and the second input end is by the 4th pin J
4receive reference voltage V
rEF.And error amplifier 540 reacts on output feedack voltage V
fBbe associated with reference voltage V
rEFand export an error amplification signal V
cOM.Control module 550 couples error amplifier 540, and according to error amplification signal V
cOMprovide regulation voltage V
rEG, and from described output connecting pin J
oUTexport, wherein this output feedack voltage V
fBdepend on regulation voltage V
rEG.
In addition, voltage-regulation integrated circuit 510 also can comprise voltage buffer circuit 560.The input of voltage buffer circuit 560 couples the first pin J
1, its output couples the second pin J
2, its one end is coupled to operating voltage V
rand be coupled to the 3rd pin J
3.External circuit 530 can comprise integrating circuit 532 and resistance network 534.Integrating circuit 532 can be made up of resistance R1 and electric capacity C, and wherein one end of resistance R1 couples the secondth pin J
2.One end of the other end coupling capacitance C of resistance R1, the other end of electric capacity C then couples ground GND.Further, resistance network 534 can be made up of resistance R2 to R4, and wherein resistance R4 is coupled to the 3rd pin J
3, and the place of coupling of resistance R3 and resistance R4 is connected to the 4th pin J
4.Reference voltage V
rEFcan be determined by following mathematical expression 1.
[mathematical expression 1]
Reference voltage
Next, one of ordinary skill in the art are made to be readily appreciated that and to be modified as dissimilar integrated circuit by with each embodiment following.
Fig. 7 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Fig. 7.Voltage-regulation integrated circuit 510A is the change type based on voltage-regulation integrated circuit 510.Voltage-regulation integrated circuit 510A can comprise adjustment voltage source V
aDJ.Adjustment voltage source V
aDJbe coupled to the 4th pin J
4and between the second input end of error amplifier 540.Reference voltage V
rEFcan be determined by following mathematical expression 2.
[mathematical expression 2]
Reference voltage
Fig. 8 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Fig. 8.Voltage-regulation integrated circuit 510B is another change type based on voltage-regulation integrated circuit 510.Voltage-regulation integrated circuit 510B can comprise adjustment current source I
aDJ.Adjustment current source I
aDJbe coupled to the 4th pin J
4with the second input end of error amplifier 540.Reference voltage V
rEFcan be determined by following mathematical expression 3.
[mathematical expression 3]
Reference voltage
Fig. 9 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Fig. 9.Voltage-regulation integrated circuit 510C has the bias capability (offsetfunction) of matching test, and is another change type based on voltage-regulation integrated circuit 510.Under the prerequisite not increasing pin, voltage-regulation integrated circuit 510C is also in order to couple an outside bias voltage function setting circuit 570.Bias voltage function setting circuit 570 can be the sequential circuit of resistance R5 and resistance R6, with to operating voltage V
dDcarry out dividing potential drop.In addition, voltage-regulation integrated circuit 510C comprises the 6th pin J that originally will be used for bias capability
6with current adjustment unit 572.This 6th pin J
6in order to couple bias voltage function setting circuit 570, and the 6th pin J
6adjustment current source I is coupled to by current adjustment unit 572
aDJ.Therefore, current source I is adjusted
aDJcan adjust according to current adjustment unit 572.
Figure 10 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Figure 10.Voltage-regulation integrated circuit 510D has the attenuation function (droopfunction) of matching test, and is another change type based on voltage-regulation integrated circuit 510.Under the prerequisite not increasing pin, voltage-regulation integrated circuit 510D is also in order to couple outside decay function setting circuit 580.And voltage-regulation integrated circuit 510D comprises current sense and current lens unit 582, and originally to be used for the 7th pin J of attenuation function
7and the 8th pin J
8.7th pin J
7and the 8th pin J
8in order to couple decay function setting circuit 580, and the 7th pin J
7and the 8th pin J
8adjustment current source I is coupled by current sense and current lens unit 582
aDJ.Therefore, current source I is adjusted
aDJcan adjust according to current sense and current lens unit 582.
Figure 11 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Figure 11.Voltage-regulation integrated circuit 510E is another change type based on voltage-regulation integrated circuit 510.Voltage-regulation integrated circuit 510D also can comprise pwm unit 590.Pwm unit 590 is in order to width modulation reference voltage signal S
vIDcarry out the pulse-length modulation of digital type, and the pulse after adjustment is width modulation reference voltage signal S originally
vIDwith the summation of extra pulse.Pulse after this adjustment just can produce the reference voltage V with the different analogy pattern of script via the integrating circuit 532 of the outside of voltage-regulation integrated circuit 510D again
rEF.
Figure 12 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Figure 12.Voltage-regulation integrated circuit 510F is another change type based on voltage-regulation integrated circuit 510.Voltage-regulation integrated circuit 510F can comprise pwm unit 590A, adjustment signal generation unit 594A and the 6th pin J
6.This 6th pin J
6in order to couple outside bias voltage function setting circuit 570, and the 6th pin J
6couple adjustment signal generation unit 594A.Pwm unit 590A is according to width modulation reference voltage signal S
vIDpulse-length modulation is carried out with the output of adjustment signal generation unit 594A.In addition, the 6th pin J
6the input voltage received can via software or jumper connection mode or other analogical pattern or other numerical digit mode or the numerical value changed with different condition or fixed value, and therefore the present invention does not limit the 6th pin J
6the voltage type received.
Figure 13 is the schematic diagram of the voltage-regulation integrated circuit according to another embodiment of the present invention.Refer to Figure 13.Voltage-regulation integrated circuit 510G is another change type based on voltage-regulation integrated circuit 510.Voltage-regulation integrated circuit 510G can comprise pwm unit 590B, adjustment signal generation unit 594B, the 7th pin J
7and the 8th pin J
8.Pwm unit 590B is coupled to the second pin J
2and between the output of voltage buffer circuit 560.Adjustment signal generation unit 594B receives from the 7th pin J
7and the 8th pin J
8input signal, and produce an adjustment signal S
aDJto pwm unit 590B.Pwm unit 590B can according to the width modulation reference voltage signal S through buffering
vIDand adjustment signal S
aDJcarry out pulse-length modulation.
The content disclosed based on above-mentioned each one exemplary embodiment is known, designed voltage-regulation integrated circuit does not need extra pin to carry out dynamic voltage-regulation, thus can effectively solve tradition because of adopt additional pins and element cause circuit area to become large problem.On the other hand, compared to traditional approach, designed voltage-regulation integrated circuit or the circuit area of voltage regulator circuit can be less, and element uses number also less, therefore can reduce manufacturing cost.
Based on the content that above-described embodiment discloses, can converge whole go out a kind of general voltage adjusting method.Clearer, Figure 14 is depicted as the process flow diagram of the voltage adjusting method of one embodiment of the invention.Please refer to Fig. 1 and Figure 14, the voltage adjusting method of the present embodiment can comprise the following steps.
As shown in step S1401, based on width modulation reference voltage signal S
vIDand adjusted and produce reference voltage V
rEF.
Then, as shown in step S1403, output feedack voltage V is reacted on
fBbe associated with reference voltage V
rEF, to carry out application condition, export an error amplification signal V
cOMP.
Then as shown in step S1405, according to error amplification signal V
cOMPone regulation voltage V is provided
rEG, wherein output feedack voltage V
fBdepend on regulation voltage V
rEG.
In addition, in one embodiment, when carrying out step S1401, integral way can be used to adjust width modulation reference voltage signal S
vID, also can adjust width modulation reference voltage signal S by numerical digit mode
vIDpulsewidth, or adjustment width modulation reference voltage signal S
vIDamplitude.
Moreover, in another embodiment, when carrying out step S1403, also can utilize reference voltage V further
rEFvoltage source V is adjusted with one
aDJcoupling (shown by Fig. 2 or Fig. 7) or reference voltage V
rEFwith adjustment current source I
aDJcoupling (shown by Fig. 3 or Fig. 8), to produce a coupled signal, then with this coupled signal and output feedack voltage V
fBcarry out application condition, thus output error amplifying signal V
cOMP.
In sum, the present invention is because adopting novel design, and designed voltage-regulation integrated circuit does not need extra pin to carry out dynamic voltage-regulation, thus can effectively solve tradition because of adopt additional pins and element cause circuit area to become large problem.On the other hand, compared to traditional approach, the circuit area that voltage regulator circuit of the present invention or method use can be smaller, and element uses number also less, therefore can reduce manufacturing cost.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (16)
1. a voltage regulator circuit, is characterized in that, comprising:
One reference voltage generation unit, in order to provide a reference voltage, described reference voltage generation unit comprises:
One width modulation reference voltage information provider unit, provides a width modulation reference voltage signal;
One voltage-adjusting unit, receives described width modulation reference voltage signal, and provides described reference voltage, and wherein said reference voltage is based on described width modulation reference voltage signal and produces after being adjusted;
One error amplifier, there is a first input end and one second input end, described first input end receives an output feedack voltage, and described second input end receives described reference voltage, and described error amplifier exports an error amplification signal according to described reference voltage and described output feedack voltage; And
One control module, couples described error amplifier, and provides a regulation voltage according to described error amplification signal;
Wherein said voltage-adjusting unit also comprises:
One integrating circuit, couples described width modulation reference voltage information provider unit;
One resistance network, is coupled to the output terminal of described integrating circuit; And
One adjustment current source, is coupled between described resistance network and described second input end.
2. a voltage regulator circuit, is characterized in that, comprising:
One reference voltage generation unit, in order to provide a reference voltage, described reference voltage generation unit comprises:
One width modulation reference voltage information provider unit, provides a width modulation reference voltage signal;
One voltage-adjusting unit, receives described width modulation reference voltage signal, and provides described reference voltage, and wherein said reference voltage is based on described width modulation reference voltage signal and produces after being adjusted;
One error amplifier, there is a first input end and one second input end, described first input end receives an output feedack voltage, and described second input end receives described reference voltage, and described error amplifier exports an error amplification signal according to described reference voltage and described output feedack voltage; And
One control module, couples described error amplifier, and provides a regulation voltage according to described error amplification signal;
Wherein said voltage-adjusting unit also comprises:
One integrating circuit, couples described width modulation reference voltage information provider unit; And
One pwm unit, is coupled between described width modulation reference voltage information provider unit and described integrating circuit.
3. a voltage regulator circuit, is characterized in that, comprising:
One reference voltage generation unit, in order to provide a reference voltage, described reference voltage generation unit comprises:
One width modulation reference voltage information provider unit, provides a width modulation reference voltage signal;
One voltage-adjusting unit, receives described width modulation reference voltage signal, and provides described reference voltage, and wherein said reference voltage is based on described width modulation reference voltage signal and produces after being adjusted;
One error amplifier, there is a first input end and one second input end, described first input end receives an output feedack voltage, and described second input end receives described reference voltage, and described error amplifier exports an error amplification signal according to described reference voltage and described output feedack voltage; And
One control module, couples described error amplifier, and provides a regulation voltage according to described error amplification signal;
Wherein said voltage-adjusting unit comprises:
One voltage buffer circuit, couples described width modulation reference voltage information provider unit; And
One integrating circuit, couples described voltage buffer circuit.
4. a voltage-regulation integrated circuit, is characterized in that, in order to couple a width modulation reference voltage information provider unit and an external circuit, described voltage-regulation integrated circuit comprises:
One first pin, in order to couple described width modulation reference voltage information provider unit;
One second pin, one the 3rd pin and one the 4th pin, in order to couple described external circuit, wherein said external circuit provides a reference voltage, and described reference voltage is coupled to described 4th pin;
One the 5th pin, in order to couple an output feedack voltage;
One error amplifier, there is a first input end and one second input end, described first input end receives described output feedack voltage, described second input end receives described reference voltage by described 4th pin, and described error amplifier reacts on described output feedack voltage and is associated with described reference voltage and exports an error amplification signal; And
One control module, couples described error amplifier, and provides a regulation voltage according to described error amplification signal.
5. voltage-regulation integrated circuit according to claim 4, is characterized in that, described external circuit comprises:
One integrating circuit, couples described second pin.
6. voltage-regulation integrated circuit according to claim 5, is characterized in that, described external circuit also comprises:
One resistance network, couples described 3rd pin.
7. voltage-regulation integrated circuit according to claim 4, is characterized in that, described voltage-regulation integrated circuit also comprises:
One adjustment voltage source, is coupled between described 4th pin and described second input end.
8. voltage-regulation integrated circuit according to claim 4, is characterized in that, described voltage-regulation integrated circuit also comprises:
One adjustment current source, is coupled to described 4th pin and described second input end.
9. voltage-regulation integrated circuit according to claim 8, is characterized in that, described voltage-regulation integrated circuit is also in order to couple an outside bias voltage function setting circuit, and described voltage-regulation integrated circuit also comprises:
One the 6th pin, in order to couple described bias voltage function setting circuit, and described 6th pin also couples described adjustment current source.
10. voltage-regulation integrated circuit according to claim 8, is characterized in that, described voltage-regulation integrated circuit is also in order to couple an outside decay function setting circuit, and described voltage-regulation integrated circuit also comprises:
One the 7th pin and one the 8th pin, in order to couple described decay function setting circuit, and described 7th pin and described 8th pin also couple described adjustment current source.
11. voltage-regulation integrated circuit according to claim 5, is characterized in that, described voltage-regulation integrated circuit also comprises:
One pwm unit, couples described second pin.
12. voltage-regulation integrated circuit according to claim 4, is characterized in that, described voltage-regulation integrated circuit also comprises:
One voltage buffer circuit, couples described first pin, described second pin and described 3rd pin.
13. 1 kinds of voltage adjusting methods, is characterized in that, comprising:
Adjusted and produced a reference voltage based on a width modulation reference voltage signal;
React on an output feedack voltage and be associated with described reference voltage, to carry out application condition, exporting an error amplification signal; And
A regulation voltage is provided according to described error amplification signal,
Wherein said output feedack voltage depends on described regulation voltage;
Wherein react on described output feedack voltage to comprise with the step being associated with described reference voltage:
Described reference voltage and one adjusts voltage source and to be coupled or described reference voltage and adjusts current source and is coupled to produce a coupled signal, then carries out application condition with described coupled signal and described output feedack voltage, thus exports described error amplification signal.
14. voltage adjusting methods according to claim 13, is characterized in that, based on described width modulation reference voltage signal and the step adjusted comprise:
Described width modulation reference voltage signal is adjusted with integral way.
15. voltage adjusting methods according to claim 13, is characterized in that, based on described width modulation reference voltage signal and the step adjusted comprise:
Adjust the pulsewidth of described width modulation reference voltage signal.
16. voltage adjusting methods according to claim 13, is characterized in that, based on described width modulation reference voltage signal and the step adjusted comprise:
Adjust the amplitude of described width modulation reference voltage signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101146959 | 2012-12-12 | ||
| TW101146959A TWI470917B (en) | 2012-12-12 | 2012-12-12 | Voltage regulation integrated circuit, voltage regulator circuit and method thereof |
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| Publication Number | Publication Date |
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| CN103869853A CN103869853A (en) | 2014-06-18 |
| CN103869853B true CN103869853B (en) | 2016-01-13 |
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| TW (1) | TWI470917B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9342086B2 (en) * | 2014-08-27 | 2016-05-17 | Intersil Americas LLC | Current mode control modulator with combined control signals and improved dynamic range |
| CN118051085A (en) * | 2022-11-15 | 2024-05-17 | 上海禾赛科技有限公司 | Voltage regulating circuit, regulating method and laser radar |
| CN116542219B (en) * | 2023-07-05 | 2023-09-22 | 北京智芯仿真科技有限公司 | Method and system for optimizing multiple VRM positions of integrated circuit power supply system |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI470917B (en) | 2015-01-21 |
| TW201424236A (en) | 2014-06-16 |
| CN103869853A (en) | 2014-06-18 |
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