CN1741375B - Amplified circuit capable of dynamic regulating supply voltage - Google Patents
Amplified circuit capable of dynamic regulating supply voltage Download PDFInfo
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- CN1741375B CN1741375B CN 200410057906 CN200410057906A CN1741375B CN 1741375 B CN1741375 B CN 1741375B CN 200410057906 CN200410057906 CN 200410057906 CN 200410057906 A CN200410057906 A CN 200410057906A CN 1741375 B CN1741375 B CN 1741375B
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- voltage
- amplifier
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- switch
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Abstract
An amplifying circuit enabling to dynamically regulate supply voltage consists of a switching over capacity voltage converter for selecting size of supply voltage by switching - over , a control unit being coupled on input end or output end of amplifier and being used to generate a control signal to voltage converter on switching over capacity according to amplifier input signal to output signal .
Description
Technical field
The present invention relates to a kind of amplifying circuit, particularly relate to a kind of amplifying circuit that utilizes the switch-capacitor electric pressure converter with dynamic adjustment service voltage.
Background technology
Amplifier is the circuit unit of using always, yet the energy service efficiency of general amplifier is not high.Generally speaking, the energy via service voltage (supply voltage) is provided can also can not come to be wasted and have many energy according to the required output signal of input signal output in order to driving amplifier fully.
In view of this, the starting point of the present invention, promptly be to propose a kind of amplifying circuit, can be according to the signal that inputs or outputs of amplifier, utilize one to switch the service voltage that capacitance voltage transducer (switched-capacitorvoltage converter) is dynamically adjusted amplifier, to improve the energy service efficiency.
Summary of the invention
One of purpose of the present invention provides a kind of amplifying circuit that can dynamically adjust service voltage, and it comprises an amplifier and and switches the capacitance voltage transducer.This switch-capacitor electric pressure converter is coupled to amplifier, can be according to the output signal of amplifier or the input signal service voltage in order to dynamic adjustment amplifier.
In a preferred embodiment, the size of this service voltage is adjusted in the changeable selection of switch-capacitor electric pressure converter.
In a preferred embodiment, amplifying circuit also comprises a control device, is coupled to an input or the output of amplifier, inputs or outputs signal in order to one of foundation amplifier, produce a controlling signal to the switch-capacitor electric pressure converter, make the switch-capacitor electric pressure converter adjust service voltage according to this.
Since the switch-capacitor electric pressure converter have circuit design simple, be swift in response, plurality of advantages such as with low cost, low electromagnetic interference (EMI) and energy conversion efficiency height own, thereby can make the amplifying circuit of the present invention can be at short notice, dynamically adjust service voltage, realize the purpose of the electric energy service efficiency of raising amplifying circuit.
Description of drawings
Fig. 1 is the preferred embodiment calcspar of amplifying circuit of the present invention.
Fig. 2 is the circuit diagram of an embodiment of the switch-capacitor electric pressure converter of Fig. 1.
Fig. 3 A, B and C are the simplified electrical circuit diagram of switch-capacitor electric pressure converter when the different gains value of Fig. 2.
Fig. 4 is another preferred embodiment calcspar of amplifying circuit of the present invention.
The drawing reference numeral explanation:
1,4: amplifying circuit 10: amplifier
11,11a: switch-capacitor electric pressure converter
12: control device 121: peak detector
122: voltage sensor 123: gain control unit
Embodiment
For making further understanding and approval are arranged, now be described with reference to the accompanying drawings for the present invention.
Fig. 1 is the preferred embodiment calcspar of amplifying circuit of the present invention.As shown in Figure 1, amplifying circuit 1 comprises an amplifier 10, a switching capacitance voltage transducer 11 and a control device 12.Switch-capacitor electric pressure converter 11 is coupled to amplifier 10, can be with a voltage source V of being accepted
Dd, be converted to service voltage and deliver to amplifier 10.If the gain of switch-capacitor electric pressure converter 11 is G, then service voltage is G*V
Dd, as shown in the figure.Switch-capacitor electric pressure converter 11 also can dynamically be adjusted its yield value G according to a controlling signal, hereinafter can do illustrating in greater detail to this.
As previously mentioned, switch-capacitor electric pressure converter 11 is dynamically adjusted yield value according to controlling signal, so that different service voltages to be provided.In fact, switch-capacitor electric pressure converter 11 utilizes the specific configuration that couples of electric capacity and switch, and can have a plurality of yield values, and it can be expressed as the form of M/N usually, and M and N are integer.By the switching of switch, switch-capacitor electric pressure converter 11 is switched between these yield values.
Fig. 2 is the circuit diagram of an embodiment of switch-capacitor electric pressure converter 11.As shown in Figure 2, switch-capacitor electric pressure converter 11a comprises capacitor C
1, C
2And switch S
1To S
10, and the voltage (being the X point voltage) of input is V
Dd, the output voltage after the conversion (being the Y point voltage) is G*V
Dd, G is a yield value.In running, one group of switch S
1With S
2Be conducting (ON)/(OFF) state that opens circuit according to one first clock signal, and another group switch S
3With S
4Then be the ON/OFF state according to a second clock signal, and the not conducting simultaneously of these two groups of switches.
The switch-capacitor electric pressure converter 11a of Fig. 2 has three yield values 1,0.5 and-1, and by diverter switch S
5To S
10, can adjust corresponding yield value.The corresponding relation of switch switching mode and yield value, as described below:
(1) if S
5, S
6And S
9Be ON, S
7, S
8And S
10Be OFF, then Fig. 2 can be reduced to the circuit shown in Fig. 3 A.Work as S
1With S
2(S3 and S4 are for opening circuit) can make capacitor C during conducting
1Voltage become V
DdAnd work as S
3With S
4(S during conducting
1With S
2For opening circuit), C
1Voltage V
DdCan be transferred to capacitor C
2, and the voltage that X is ordered is V
Dd, so yield value G=1.
(2) if S
6, S
8And S
9Be ON, S
5, S
7And S
10Be OFF, then Fig. 2 can be reduced to the circuit of Fig. 3 B.Work as S
1With S
2During conducting, can make C
1Voltage become V
Dd* (1-G) (being the voltage difference between X and Y); And work as S
3With S
4During conducting, C
1Voltage V
Dd* (1-G) can be transferred to C
2, the voltage that X is ordered is V
Dd* G, that is
V
dd*G＝V
dd*(1-G)
Thus, can push away G=0.5.
(3) if S
5, S
7And S
10Be ON, S
6, S
8And S
9Be OFF, then Fig. 2 can be reduced to the circuit of Fig. 3 C.Work as S
1With S
2During conducting, can make C
1Voltage become V
DdAnd work as S
3With S
4During conducting, C
1Voltage V
DdCan be transferred to C
2, and the voltage that X is ordered is-V
Dd, so G=-1.
Certainly, those skilled in the art all can be according to required yield value, and designs corresponding switch-capacitor electric pressure converter.As long as on using, utilize the switch-capacitor electric pressure converter to reach the purpose of dynamic adjustment amplifier service voltage, neither disengaging the spirit and scope of the present invention.
Fig. 4 is another preferred embodiment calcspar of amplifying circuit of the present invention.Compare with the embodiment of Fig. 1, the assembly that amplifying circuit 4 is comprised is identical with amplifying circuit 1, and difference only is that control device 12 is the outputs that are coupled to amplifier 10 among Fig. 1, and control device 12 then is coupled to the input of amplifier 10 among Fig. 4.In other words, among Fig. 4, control device 12 is the input signals according to amplifier 10, produces controlling signal to switch-capacitor electric pressure converter 11.Particularly, an input voltage peak value of peak detector 121 detecting amplifiers 10 in the control device 12 is to send into voltage sensor 122.The running of the remainder of amplifying circuit 4, then identical with aforesaid amplifying circuit 1, do not give unnecessary details now.
The above is to utilize preferred embodiment to describe the present invention in detail, but not limits the scope of the invention.Those skilled in the art all can understand, suitable some changes and the adjustment done will be within the protection ranges of claim of the present invention.
Claims (4)
1. the amplifying circuit that can dynamically adjust service voltage comprises:
One amplifier in order to by a service voltage, receives an input signal and exports an output signal; And
One service voltage is adjusted circuit, is coupled to this amplifier, in order to this service voltage of dynamically adjusting this amplifier according to the input signal or the output signal of this amplifier,
Wherein this service voltage adjustment circuit comprises that one switches the capacitance voltage transducer, wherein this switch-capacitor electric pressure converter is exported this service voltage in order to foundation one input voltage, and this service voltage of the changeable selection of this switch-capacitor electric pressure converter is with respect to the gain of this input voltage.
2. amplifying circuit as claimed in claim 1, wherein this switch-capacitor electric pressure converter also comprises:
One input is in order to receive this input voltage;
One output is in order to export this service voltage;
A plurality of electric capacity couple with this input and this output respectively; And
A plurality of switches, wherein, each of these a plurality of switches directly couples with at least one of this input, this output or these a plurality of electric capacity respectively;
Wherein, by controlling each switching of these a plurality of switches, make this service voltage have a gain with respect to this input voltage.
3. amplifying circuit as claimed in claim 1 wherein also comprises a control device, is coupled to this amplifier, in order to according to this input signal of this amplifier and at least one of this output signal, produces a controlling signal and controls this service voltage adjustment circuit.
4. amplifying circuit as claimed in claim 3, wherein this control device comprises:
One peak detector is in order at least one a voltage peak of this input signal of detecting this amplifier and this output signal;
One voltage sensor is coupled to this peak detector, in order to the size of this voltage peak of sensing; And
One gain control unit is exported this controlling signal according to the sensing result of this voltage sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410057906 CN1741375B (en) | 2004-08-26 | 2004-08-26 | Amplified circuit capable of dynamic regulating supply voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410057906 CN1741375B (en) | 2004-08-26 | 2004-08-26 | Amplified circuit capable of dynamic regulating supply voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1741375A CN1741375A (en) | 2006-03-01 |
| CN1741375B true CN1741375B (en) | 2010-10-27 |
Family
ID=36093624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410057906 Active CN1741375B (en) | 2004-08-26 | 2004-08-26 | Amplified circuit capable of dynamic regulating supply voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1741375B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011002937A1 (en) * | 2011-01-20 | 2012-07-26 | Ford Global Technologies, Llc | Particle sensor, exhaust system and method for determining particles in the exhaust gas |
| EP3461003B1 (en) | 2017-07-26 | 2020-10-28 | Shenzhen Goodix Technology Co., Ltd. | Dynamic amplifying circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873493A (en) * | 1987-02-20 | 1989-10-10 | Victor Company Of Japan, Ltd. | Audio amplifier |
| CN1122970A (en) * | 1995-07-07 | 1996-05-22 | 沙占起 | Power amplifier circuit |
| CN1245598A (en) * | 1997-01-27 | 2000-02-23 | 夸尔柯姆股份有限公司 | High dynamic range variable gain amplifier |
| US6624702B1 (en) * | 2002-04-05 | 2003-09-23 | Rf Micro Devices, Inc. | Automatic Vcc control for optimum power amplifier efficiency |
| US6639471B2 (en) * | 2001-04-16 | 2003-10-28 | Matsushita Electric Industrial Co., Ltd. | Power amplifier circuit, control method for power amplifier circuit, and portable terminal apparatus for mobile communication |
-
2004
- 2004-08-26 CN CN 200410057906 patent/CN1741375B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873493A (en) * | 1987-02-20 | 1989-10-10 | Victor Company Of Japan, Ltd. | Audio amplifier |
| CN1122970A (en) * | 1995-07-07 | 1996-05-22 | 沙占起 | Power amplifier circuit |
| CN1245598A (en) * | 1997-01-27 | 2000-02-23 | 夸尔柯姆股份有限公司 | High dynamic range variable gain amplifier |
| US6639471B2 (en) * | 2001-04-16 | 2003-10-28 | Matsushita Electric Industrial Co., Ltd. | Power amplifier circuit, control method for power amplifier circuit, and portable terminal apparatus for mobile communication |
| US6624702B1 (en) * | 2002-04-05 | 2003-09-23 | Rf Micro Devices, Inc. | Automatic Vcc control for optimum power amplifier efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1741375A (en) | 2006-03-01 |
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