CN110289860A - The band of digital signal converting analogue signals carries circuit and power supply architecture - Google Patents
The band of digital signal converting analogue signals carries circuit and power supply architecture Download PDFInfo
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- CN110289860A CN110289860A CN201910504421.0A CN201910504421A CN110289860A CN 110289860 A CN110289860 A CN 110289860A CN 201910504421 A CN201910504421 A CN 201910504421A CN 110289860 A CN110289860 A CN 110289860A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
- H03M1/1245—Details of sampling arrangements or methods
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
- H03M1/182—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the reference levels of the analogue/digital converter
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
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- Theoretical Computer Science (AREA)
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- Analogue/Digital Conversion (AREA)
Abstract
The invention proposes a kind of bands of digital signal converting analogue signals to carry circuit and power supply architecture, the control terminal that the band carries switching circuit in circuit is connected with the output end of switching signal generation circuit, the input terminal of switching circuit is connect with DC power supply, one end of the output end of switching circuit and accumulator, freewheeling circuit one end be separately connected, the other end of accumulator is connected with the anode of filter capacitor, the cathode of filter capacitor is connected with the other end of freewheeling circuit, and the cathode and anode of filter capacitor are as with the output end for carrying circuit；The switching signal that switching signal generation circuit generates is used for the on or off of control switch circuit, when switching circuit conducting, the input voltage of DC power supply is that accumulator carries out energy storage, when switching circuit shutdown, the output signal of accumulator is by returning to accumulator after filter capacitor and freewheeling circuit.The present invention can convert out stable voltage analog signal by digital signal, improve load capacity.
Description
Technical field
The present invention relates to the bands of power technique fields more particularly to a kind of digital signal converting analogue signals to carry circuit and electricity
Source structure.
Background technique
It mainly opens and closes in turn using two triodes currently, the band of digital signal converting analogue signals carries circuit
Disconnected, when opening to primary capacitor charging, primary capacitor gives secondary capacitance charging when shutdown, and then realizes the generation of negative pressure.
In realizing process of the present invention, inventor has found that existing implementation at least has the disadvantage that
Existing band carries the technical solution of circuit, although can be realized the generation of negative pressure, the voltage load capacity is insufficient,
And circuit realization needs to use two electrolytic capacitors, and the volume of electrolytic capacitor is relatively very big, causes circuit volume excessive.
Summary of the invention
The band that the embodiment of the present invention proposes a kind of digital signal converting analogue signals carries circuit and power supply architecture, to solve
The band of existing digital signal converting analogue signals carries voltage load capacity deficiency caused by circuit, and circuit volume is excessive to ask
Topic.
The embodiment of the invention provides a kind of bands of digital signal converting analogue signals to carry circuit, including DC power supply, opens
OFF signal generation circuit, switching circuit, accumulator, freewheeling circuit and filter capacitor, the control terminal of the switching circuit and institute
The output end for stating switching signal generation circuit is connected, and the input terminal of the switching circuit is connect with the DC power supply, described to open
The output end on powered-down road is separately connected with one end of the accumulator, one end of freewheeling circuit, the accumulator it is another
End is connected with the anode of the filter capacitor, and the cathode of the filter capacitor is connected with the other end of the freewheeling circuit, described
The cathode and anode of filter capacitor are as with the output end for carrying circuit；
The switching signal generation circuit controls the switching circuit for generating switching signal, based on the switching signal
On or off, when switching circuit conducting, the input voltage of the DC power supply is that the accumulator is stored up
Can, when switching circuit shutdown, the output signal of the accumulator passes through the filter capacitor and the freewheeling circuit
After return to the accumulator.
Optionally, the freewheeling circuit is realized using diode, and the cathode of the diode is defeated with the switching circuit
The anode of outlet connection, the diode is connect with the cathode of the filter capacitor.
Optionally, the switching circuit includes first resistor and switching tube；
The control terminal of the switching tube is connect by the first resistor with the output end of the switching signal generation circuit,
The input terminal of the switching tube is connect with the DC power supply, the output end of the switching tube respectively with the accumulator one
The cathode connection at end, the diode.
Optionally, the switching tube is that triode or mos are managed.
Optionally, the switching circuit further includes second resistance；
The second resistance is connected between the control terminal and input terminal of the switching tube.
Optionally, the accumulator is realized using energy storage inductor, one end of the energy storage inductor and the switching circuit
Output end connection, the other end of the energy storage inductor is connected with the anode of the filter capacitor.
Optionally, it further includes feedback voltage sample circuit that the band of the digital signal converting analogue signals, which carries circuit:
The feedback voltage sample circuit, the output voltage for carrying circuit to the band sample, and will sampling electricity
Pressure feedback arrive the switching signal generation circuit, for the switching signal generation circuit according to the sampled voltage to output
Switching signal is adjusted.
Optionally, the anode of the filter capacitor is connect with ground wire, and the cathode of the filter capacitor is as with load circuit
Negative pressure output end；
The feedback voltage sample circuit includes 3rd resistor, the 4th resistance and for connection switch signal generating circuit
Sampled output；
One end of the 3rd resistor is connect with the DC power supply, the other end of the 3rd resistor and the 4th electricity
One end of resistance connects, and the other end of the 4th resistance is connect with the negative pressure output end that the band carries circuit, the sampling output
End is connected between the 3rd resistor and the 4th resistance.
Optionally, the hot end just extremely with load circuit of the filter capacitor, the cathode of the filter capacitor are band
Carry the cold end of circuit；
The feedback voltage sample circuit includes 3rd resistor, the 4th resistance and for connection switch signal generating circuit
Sampled output；
In parallel with the filter capacitor after the 3rd resistor and the 4th resistance concatenation, the sampled output is connected to institute
It states between 3rd resistor and the 4th resistance.
The embodiment of the invention also provides a kind of power supply architecture, the power supply architecture includes that digital signal as described above turns
The band for changing analog signal carries circuit.
The embodiment of the invention also provides a kind of household appliance, the household appliance includes power supply architecture as described above.
The band of digital signal converting analogue signals provided in an embodiment of the present invention carries circuit and power supply architecture, can pass through number
Word signal converts out stable voltage analog signal, realizes stabilized zone dynamic load.Subtract in circuit moreover, band provided by the invention carries
Lack the usage quantity of electrolytic capacitor, and then reduces circuit volume.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of digital signal converting analogue signals that first embodiment of the invention provides with the structural frames for carrying circuit
Figure；
Fig. 2 is another digital signal converting analogue signals that first embodiment of the invention provides with the structure for carrying circuit
Block diagram；
Fig. 3 is a kind of the former with the circuit for carrying circuit of digital signal converting analogue signals that first embodiment of the invention provides
Reason figure；
Fig. 4 is another digital signal converting analogue signals that second embodiment of the invention provides with the structure for carrying circuit
Block diagram；
Fig. 5 is another digital signal converting analogue signals that second embodiment of the invention provides with the structure for carrying circuit
Block diagram；
Fig. 6 is another digital signal converting analogue signals that second embodiment of the invention provides with the circuit for carrying circuit
Schematic diagram.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless otherwise will not be explained in an idealized or overly formal meaning by specific definitions.
The embodiment of the invention provides a kind of bands of digital signal converting analogue signals to carry circuit, including DC power supply, opens
OFF signal generation circuit, switching circuit, accumulator, freewheeling circuit and filter capacitor, the control terminal of the switching circuit and institute
The output end for stating switching signal generation circuit is connected, and the input terminal of the switching circuit is connect with the DC power supply, described to open
The output end on powered-down road is separately connected with one end of the accumulator, one end of freewheeling circuit, the accumulator it is another
End is connected with the anode of the filter capacitor, and the cathode of the filter capacitor is connected with the other end of the freewheeling circuit, described
The cathode and anode of filter capacitor are as with the output end for carrying circuit.
It is explained separately below to two kinds of connection types for carrying filter capacitor in circuit:
Mode one: the anode of the filter capacitor is connect with ground wire, and the cathode of the filter capacitor is as with load circuit
Negative pressure output end；
Mode two: the hot end just extremely with load circuit of the filter capacitor, the cathode of the filter capacitor are band
Carry the cold end of circuit.
Fig. 1 is a kind of digital signal converting analogue signals provided in an embodiment of the present invention with the structural block diagram for carrying circuit.
As shown in Figure 1, the band of digital signal converting analogue signals provided in an embodiment of the present invention carries circuit, including DC power supply 10, open
OFF signal generation circuit 20, switching circuit 30, accumulator 40, freewheeling circuit 50 and filter capacitor 60, the switching circuit 30
Control terminal be connected with the output end of the switching signal generation circuit 20, the input terminal of the switching circuit 30 and the direct current
Power supply 10 connects, and one end of the output end of the switching circuit 30 and the accumulator 40, one end of freewheeling circuit 50 are distinguished
Connection, the other end of the accumulator 40 is connected with the anode of the filter capacitor 60, and by the tie point, that is, filtering
The anode of capacitor is connect with ground wire, and the cathode of the filter capacitor 60 is connected with the other end of the freewheeling circuit 50, the filter
The cathode of wave capacitor is as with the negative pressure output end-VEE for carrying circuit.Wherein, the switching signal generation circuit 20 is for generating
Switching signal, and the on or off of the switching circuit 30 is controlled based on the switching signal, when the switching circuit 30 is led
When logical, the input voltage of the DC power supply 10 is that the accumulator 40 carries out energy storage, when the switching circuit 30 shutdown,
The output signal of the accumulator 40 returns to the accumulator after passing through the filter capacitor 60 and the freewheeling circuit 50,
And then stable negative voltage is formed at the two poles of the earth of filter capacitor 60.
The band of digital signal converting analogue signals provided in an embodiment of the present invention carries circuit, can be converted by digital signal
Stable voltage analog signal out realizes stabilized zone dynamic load.Moreover, band provided by the invention, which carries, reduces electrolysis electricity in circuit
1 electrolytic capacitor is used only in entire circuit as filter capacitor, and then reduces circuit volume for the usage quantity of appearance.
Fig. 2 is another digital signal converting analogue signals provided in an embodiment of the present invention with the structural frames for carrying circuit
Figure.It is also wrapped on the basis of embodiment as shown in Figure 1 as shown in Fig. 2, the band of the digital signal converting analogue signals carries circuit
Include feedback voltage sample circuit 70:
The feedback voltage sample circuit 70 will carry out voltage division processing with the negative pressure and VCC that carry circuit output, for institute
It states and is sampled with the output voltage for carrying circuit, and sampled voltage is fed back to the switching signal generation circuit 20, for institute
Switching signal generation circuit 20 is stated to be adjusted according to switching signal of the sampled voltage to output.
The embodiment of the present invention is carried out resetting electricity using accumulator 40, and fed back to after the voltage of generation is sampled
Switching signal generation circuit 20 enables when the voltage analog signal bringing onto load exported by feeding back come the production of control switch signal
Raw circuit is adjusted the parameter of the switching signal of output, to stabilize the output voltage.
Fig. 3 is a kind of digital signal converting analogue signals provided in an embodiment of the present invention with the circuit theory for carrying circuit
Figure.As shown in figure 3, the band of digital signal converting analogue signals provided in an embodiment of the present invention carries in circuit, the filter capacitor
60 are realized using electrolytic capacitor C1, and the power supply of DC power supply 10 and switching signal generation circuit 20 is all made of power supply VCC realization, institute
State accumulator using energy storage inductor L1 realize, freewheeling circuit 50 using diode D1 realize, the cathode of the diode D1 with
The output end of the switching circuit 30 connects, and the anode of the diode D1 is connect with the cathode of the filter capacitor C1.
In the present embodiment, switching circuit 30 includes first resistor R1 and switching tube Q1；The control terminal of switching tube Q1 passes through institute
It states first resistor R1 to connect with the output end of the switching signal generation circuit 20, the input terminal of the switching tube Q1 and described straight
The VCC connection of galvanic electricity source, the output end of the switching tube Q1 are connect with the cathode of one end of energy storage inductor L1, diode D1 respectively.
In the present embodiment, switching tube Q1 is realized using triode, wherein the base stage of triode is control terminal, generates electricity with switching signal
The output end on road 20 connects, and the emitting stage of triode is input terminal, connect with DC power supply VCC, the current collection of triode is extremely defeated
Outlet is connect with the cathode of one end of energy storage inductor L1, diode D1.
It should be noted that the switching tube in the present embodiment can be managed using triode or mos, (i.e. metal oxide is partly led
Body field effect transistor) it realizes.Further, the type of switching tube, such as NPN or PNP can be chosen according to circuit design demand
Type.
Further, the switching circuit 30 further includes second resistance R2, and second resistance R2 is connected to the switching tube Q1
Control terminal (i.e. the base stage of triode) and input terminal (i.e. the emitting stage of triode) between.
In the present embodiment, one end of energy storage inductor L1 is connect with the output end (i.e. the collector of triode) of switching tube Q1,
The other end of the energy storage inductor L1 is connected with the anode of the filter capacitor C1.
The realization principle with load circuit for the digital signal converting analogue signals that the embodiment of the present invention mentions is as follows:
When the switching signal that switching signal generation circuit 20 generates is low level, triode Q1 is opened, and VCC passes through triode
Afterwards by energy storage inductor L1 to ground, inductance L1 energy storage is given.
When the switching signal that switching signal generation circuit 20 generates is high level, triode Q1 shutdown.In energy storage inductor L1
Energy start to discharge, electric current cannot be mutated, and continue to flow along original direction, and flow direction is counterclockwise: from energy storage electricity
L1 to electrolytic capacitor C1 is using flowing back to energy storage inductor L1 after diode D1 for sense.
Since electric current is the one end (anode) for connecing signal ground from electrolytic capacitor C1, the other end for flowing to electrolytic capacitor C1 is (negative
Pole), so the voltage of electrolytic capacitor C1 ground terminal can be higher than the other end.Therefore reference signal, the electrolytic capacitor C1 other end is
Negative pressure, i.e. circuit can convert digital signals into negative pressure analog signal.It is one stable that the band, which carries the negative pressure that circuit generates,
DC voltage, so the conversion of the digital signal of front end is considered as, because the corresponding output valve of different switching signals is different
Sample, thereby realize conversion of the digital signal to analog signal.
In the present embodiment, feedback voltage sample circuit 70 is including 3rd resistor R3, the 4th resistance R4 and is used for connection switch
The sampled output AD-Check of signal generating circuit 20；One end of 3rd resistor R3 is connect with the DC power supply VCC, described
The other end of 3rd resistor R3 is connect with one end of the 4th resistance R4, and the other end and the band of the 4th resistance R4 carries
Negative pressure output end-VEE the connection of circuit, the sampled output AD-Check are connected to the 3rd resistor R3 and the 4th resistance
Between R4, by sampled voltage feedback to the switching signal generation circuit 20.
For the negative pressure after stable conversion, the present invention is carried out negative pressure and VCC at partial pressure by feedback voltage sample circuit
Reason, by the Voltage Feedback got to switching signal generation circuit, for switching signal generation circuit according to the voltage value of feedback come
Adjust the output of switching signal.
Fig. 4 is another digital signal converting analogue signals provided in an embodiment of the present invention with the structural frames for carrying circuit
Figure.As shown in figure 4, the band load circuit of digital signal converting analogue signals provided in an embodiment of the present invention, including DC power supply 10,
Switching signal generation circuit 20, switching circuit 30, accumulator 40, freewheeling circuit 50 and filter capacitor 60, switching circuit 30
Control terminal is connected with the output end of the switching signal generation circuit 20, the input terminal of switching circuit 30 and the DC power supply 10
Connection, the output end of switching circuit 30 are separately connected with one end of the accumulator 40, one end of freewheeling circuit 50, energy storage electricity
The other end on road 40 is connected with the anode of filter capacitor 60, and the anode of the filter capacitor 60 is as with the hot end for carrying circuit
VDD, the cathode of the filter capacitor 60 are connected with the other end of the freewheeling circuit 50, and the cathode of the filter capacitor 60 is band
Carry the cold end of circuit.
Wherein, switching signal generation circuit 20 controls the switch based on the switching signal for generating switching signal
The on or off of circuit 30, when the switching circuit 30 conducting, the input voltage of the DC power supply 10 is the energy storage
Circuit 40 carries out energy storage, and when the switching circuit 30 shutdown, the output signal of the accumulator 40 passes through the filtered electrical
The accumulator 40 is returned after holding 60 and the freewheeling circuit 50, and then forms stable electricity in the two sides of filter capacitor 60
Pressure.
The band of digital signal converting analogue signals provided in an embodiment of the present invention carries circuit, can be converted by digital signal
Stable voltage analog signal out realizes stabilized zone dynamic load.Moreover, band provided by the invention, which carries, reduces electrolysis electricity in circuit
1 electrolytic capacitor is used only in entire circuit as filter capacitor, and then reduces circuit volume for the usage quantity of appearance.
Fig. 5 is another digital signal converting analogue signals provided in an embodiment of the present invention with the structural frames for carrying circuit
Figure.It is also wrapped on the basis of embodiment as shown in Figure 4 as shown in figure 5, the band of the digital signal converting analogue signals carries circuit
Include feedback voltage sample circuit 70.
Wherein, feedback voltage sample circuit 70 is in parallel with the filter capacitor 60, for carrying the output of circuit to the band
Voltage is sampled, and by sampled voltage feedback to the switching signal generation circuit 20, so that the switching signal generates electricity
Road 20 is adjusted according to switching signal of the sampled voltage to output.The present embodiment is reset using accumulator 40
Electricity, and switching signal generation circuit 20 is fed back to after the voltage of generation is sampled, so that the voltage analog signal band of output
It can be adjusted when load by feeding back come switching signal of the control switch signal generating circuit to output, to stablize output electricity
Pressure.
Fig. 6 is another digital signal converting analogue signals provided in an embodiment of the present invention with the circuit theory for carrying circuit
Figure.As shown in fig. 6, the band of digital signal converting analogue signals provided in an embodiment of the present invention carries in circuit, filter capacitor 60 is adopted
It is realized with electrolytic capacitor C1, the power supply of DC power supply 10 and switching signal generation circuit 20 is all made of power supply VCC realization, the storage
Can circuit using energy storage inductor L1 realize, freewheeling circuit 50 using diode D1 realization, the cathode of the diode D1 with it is described
The output end of switching circuit 30 connects, and the anode of the diode D1 is connect with the cathode of the filter capacitor C1.
In the present embodiment, switching circuit 30 includes first resistor R1 and switching tube Q1, and the control terminal of switching tube Q1 passes through institute
It states first resistor R1 to connect with the output end of the switching signal generation circuit 20, the input terminal of the switching tube Q1 and described straight
The VCC connection of galvanic electricity source, the output end of the switching tube Q1 are connect with the cathode of one end of energy storage inductor L1, diode D1 respectively.
In the present embodiment, switching tube Q1 is realized using triode, wherein the base stage of triode is control terminal, generates electricity with switching signal
The output end on road 20 connects, and the emitting stage of triode is input terminal, connect with DC power supply VCC, the current collection of triode is extremely defeated
Outlet is connect with the cathode of one end of energy storage inductor L1, diode D1.
It should be noted that the switching tube in the present embodiment can be managed using triode or mos, (i.e. metal oxide is partly led
Body field effect transistor) it realizes.Further, the type of switching tube, such as NPN or PNP can be chosen according to circuit design demand
Type.
Further, the switching circuit 30 further includes second resistance R2, and second resistance R2 is connected to the switching tube Q1
Control terminal (i.e. the base stage of triode) and input terminal (i.e. the emitting stage of triode) between.
In the present embodiment, one end of energy storage inductor L1 is connect with the output end (i.e. the collector of triode) of switching tube Q1,
The other end of energy storage inductor L1 is connected with the anode of the filter capacitor C1.
The realization principle with load circuit for the digital signal converting analogue signals that the embodiment of the present invention mentions is as follows:
When the switching signal that switching signal generation circuit 20 generates is low level, triode Q1 is opened, and VCC passes through triode
Ground is then arrived by energy storage inductor L1 to electrolytic capacitor C1 afterwards, gives energy storage inductor L1 energy storage.
When the switching signal that switching signal generation circuit 20 generates is high level, triode Q1 shutdown.In energy storage inductor L1
Energy start to discharge, electric current cannot be mutated, and continue to flow along original direction, and flow direction is clockwise: from energy storage electricity
L1 to electrolytic capacitor C1 is using flowing back to energy storage inductor L1 after diode D1 for sense.
Since electric current is the cathode for flowing to capacitor from electrolytic capacitor C1 anode, and electrolytic capacitor C1 cathode and ground connection, therefore
The voltage at the both ends electrolytic capacitor C1 is positive pressure, i.e. circuit can convert digital signals into positive pressure analog signal.The band carries circuit
The positive pressure of generation is a steady dc voltage, so the conversion of the digital signal of front end is considered as, because of different switches
The corresponding output valve of signal be it is different, thereby realize conversion of the digital signal to analog signal.
In the embodiment of the present invention, feedback voltage sample circuit 70 is including 3rd resistor R3, the 4th resistance R4 and for connecting
Switching signal generation circuit 20 sampled output AD-Check, the 3rd resistor R3 and the 4th resistance R4 concatenation after with it is described
Filter capacitor C1 is in parallel, and the sampled output AD-Check is connected between the 3rd resistor R3 and the 4th resistance R4, with
By sampled voltage feedback to the switching signal generation circuit 20.
For the voltage after stable conversion, the present invention by 3rd resistor R3 and the 4th resistance R4, by the voltage of generation into
Row voltage division processing, by the Voltage Feedback got to switching signal generation circuit, so that switching signal generation circuit is according to feedback
Voltage value adjusts switching signal.
It should be noted that the switching signal generation circuit in the embodiment of the present invention can for generating high-frequency switching signal
Think pwm signal generation circuit, circuit for generating triangular wave, or directly overturn generation using chip I/O mouthful, the present invention to this not
It is specifically limited.
In addition, the power supply architecture includes any embodiment as above the embodiment of the invention also provides a kind of power supply architecture
The band of the digital signal converting analogue signals carries circuit.
In addition, the household appliance includes any embodiment as above the embodiment of the invention also provides a kind of household appliance
The power supply architecture.
The band of digital signal converting analogue signals provided in an embodiment of the present invention carries circuit and power supply architecture, can pass through number
Word signal converts out stable voltage analog signal, realizes stabilized zone dynamic load.Subtract in circuit moreover, band provided by the invention carries
Lack the usage quantity of electrolytic capacitor, and then reduces circuit volume.
Further, circuit is carried using the band that two electrolytic capacitors are realized relative to existing, output voltage of the invention is not
It is limited by DC supply input voltage, the voltage signal greater than input voltage can be exported.
In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that the embodiment of the present invention can be with
It practices without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (11)
1. a kind of band of digital signal converting analogue signals carries circuit, which is characterized in that generated including DC power supply, switching signal
Circuit, switching circuit, accumulator, freewheeling circuit and filter capacitor, the control terminal of the switching circuit and the switching signal
The output end of generation circuit is connected, and the input terminal of the switching circuit is connect with the DC power supply, the switching circuit it is defeated
Outlet is separately connected with one end of the accumulator, one end of freewheeling circuit, the other end of the accumulator and the filter
The anode of wave capacitor is connected, and the cathode of the filter capacitor is connected with the other end of the freewheeling circuit, the filter capacitor
Cathode and anode are as with the output end for carrying circuit；
The switching signal generation circuit controls leading for the switching circuit based on the switching signal for generating switching signal
Logical or shutdown, when switching circuit conducting, the input voltage of the DC power supply is that the accumulator carries out energy storage, when
When the switching circuit turns off, the output signal of the accumulator after the filter capacitor and the freewheeling circuit by returning
The accumulator.
2. the band of digital signal converting analogue signals as described in claim 1 carries circuit, which is characterized in that the freewheeling circuit
Realized using diode, the cathode of the diode is connect with the output end of the switching circuit, the diode anode with
The cathode of the filter capacitor connects.
3. the band of digital signal converting analogue signals as claimed in claim 2 carries circuit, which is characterized in that the switching circuit
Including first resistor and switching tube；
The control terminal of the switching tube is connect by the first resistor with the output end of the switching signal generation circuit, described
The input terminal of switching tube is connect with the DC power supply, the output end of the switching tube respectively with one end of the accumulator,
The cathode of the diode connects.
4. the band of digital signal converting analogue signals as claimed in claim 3 carries circuit, which is characterized in that the switching tube is
Triode or mos pipe.
5. the band of digital signal converting analogue signals as claimed in claim 3 carries circuit, which is characterized in that the switching circuit
It further include second resistance；
The second resistance is connected between the control terminal and input terminal of the switching tube.
6. the band of digital signal converting analogue signals as described in claim 1 carries circuit, which is characterized in that the accumulator
It is realized using energy storage inductor, one end of the energy storage inductor is connect with the output end of the switching circuit, the energy storage inductor
The other end is connected with the anode of the filter capacitor.
7. the band of digital signal converting analogue signals as claimed in any one of claims 1 to 6 carries circuit, which is characterized in that described
It further includes feedback voltage sample circuit that the band of digital signal converting analogue signals, which carries circuit,；
The feedback voltage sample circuit, the output voltage for carrying circuit to the band sample, and sampled voltage is anti-
Be fed to the switching signal generation circuit, for the switching signal generation circuit according to the sampled voltage to the switch of output
Signal is adjusted.
8. the band of digital signal converting analogue signals as claimed in claim 7 carries circuit, which is characterized in that the filter capacitor
Anode connect with ground wire, the cathode of the filter capacitor is as the negative pressure output end with load circuit；
The feedback voltage sample circuit includes 3rd resistor, the 4th resistance and the sampling for connection switch signal generating circuit
Output end；
One end of the 3rd resistor is connect with the DC power supply, the other end of the 3rd resistor and the 4th resistance
The other end of one end connection, the 4th resistance is connect with the negative pressure output end that the band carries circuit, and the sampled output connects
It connects between the 3rd resistor and the 4th resistance.
9. the band of digital signal converting analogue signals as claimed in claim 7 carries circuit, which is characterized in that the filter capacitor
Just extremely with the hot end for carrying circuit, the cathode of the filter capacitor is the cold end of band load circuit；
The feedback voltage sample circuit includes 3rd resistor, the 4th resistance and the sampling for connection switch signal generating circuit
Output end；
In parallel with the filter capacitor after the 3rd resistor and the 4th resistance concatenation, the sampled output is connected to described the
Between three resistance and the 4th resistance.
10. a kind of power supply architecture, which is characterized in that including the described in any item digital signal converting analogues of such as claim 1-9
The band of signal carries circuit.
11. a kind of household appliance, which is characterized in that including power supply architecture as claimed in claim 10.
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| CN201910504421.0A CN110289860A (en) | 2019-06-12 | 2019-06-12 | The band of digital signal converting analogue signals carries circuit and power supply architecture |
| PCT/CN2019/127166 WO2020248570A1 (en) | 2019-06-12 | 2019-12-20 | Load circuit for converting digital signal to analog signal and power supply structure |
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| CN201910504421.0A CN110289860A (en) | 2019-06-12 | 2019-06-12 | The band of digital signal converting analogue signals carries circuit and power supply architecture |
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|---|---|---|---|---|
| WO2020248570A1 (en) * | 2019-06-12 | 2020-12-17 | 珠海格力电器股份有限公司 | Load circuit for converting digital signal to analog signal and power supply structure |
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| JP3711713B2 (en) * | 1997-09-24 | 2005-11-02 | 株式会社村田製作所 | Negative voltage generator |
| CN101594053A (en) * | 2009-03-27 | 2009-12-02 | 广州金升阳科技有限公司 | A kind of power supply changeover device of wide-range voltage input |
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| CN104716832B (en) * | 2013-12-16 | 2019-03-29 | 深圳市海洋王照明工程有限公司 | A kind of switching power supply |
| CN204334306U (en) * | 2015-01-07 | 2015-05-13 | 国网上海市电力公司 | The power supply circuits of the renewable new forms of energy power supply of a kind of low pressure |
| KR101704181B1 (en) * | 2015-04-02 | 2017-02-07 | 현대자동차주식회사 | Charger for vehicles |
| CN206099417U (en) * | 2016-09-12 | 2017-04-12 | 深圳市爱克斯达电子有限公司 | Battery charging device |
| CN110289860A (en) * | 2019-06-12 | 2019-09-27 | 珠海格力电器股份有限公司 | The band of digital signal converting analogue signals carries circuit and power supply architecture |
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2019
- 2019-06-12 CN CN201910504421.0A patent/CN110289860A/en active Pending
- 2019-12-20 WO PCT/CN2019/127166 patent/WO2020248570A1/en active Application Filing
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| JP3711713B2 (en) * | 1997-09-24 | 2005-11-02 | 株式会社村田製作所 | Negative voltage generator |
| CN101594053A (en) * | 2009-03-27 | 2009-12-02 | 广州金升阳科技有限公司 | A kind of power supply changeover device of wide-range voltage input |
| CN202616998U (en) * | 2012-04-11 | 2012-12-19 | 谢渊斌 | Negative voltage generating circuit |
| CN205141999U (en) * | 2015-11-12 | 2016-04-06 | 襄阳南车电机技术有限公司 | Adjustable negative pressure DC -DC converter |
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| WO2020248570A1 (en) * | 2019-06-12 | 2020-12-17 | 珠海格力电器股份有限公司 | Load circuit for converting digital signal to analog signal and power supply structure |
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| WO2020248570A1 (en) | 2020-12-17 |
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