CN105306636A - Method, circuit and system for improving power supply noise - Google Patents
Method, circuit and system for improving power supply noise Download PDFInfo
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- CN105306636A CN105306636A CN201510726566.7A CN201510726566A CN105306636A CN 105306636 A CN105306636 A CN 105306636A CN 201510726566 A CN201510726566 A CN 201510726566A CN 105306636 A CN105306636 A CN 105306636A
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Abstract
The invention discloses a method, circuit and system for improving power supply noise, and belongs to the technical field of wireless communication. The circuit comprises a voltage source output circuit, a first noise reduction circuit, a second noise reduction circuit, a third noise reduction circuit and a load circuit. Parameters of the voltage source output circuit, the first noise reduction circuit, the second noise reduction circuit, the third noise reduction circuit and the load circuit are obtained through classification processing and calculation according to a function type processing tool. In such a way, the power supply noise can be effectively inhibited by use of a least number of components and reasonable values, the material cost of a product is decreased, the product performance is improved, and user experience is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method of improvement power supply noise of mobile terminal, circuit and system.
Background technology
Along with the broad development of the mobile terminals such as mobile phone, functional module is on the increase, and the develop rapidly of mobile terminal makes the stability of its DC power supply become the bottleneck of moving communicating field development gradually.How to utilize limited design space to be the current problem needing to solve to realize increasing high integrated requirement, and first this wherein need to solve is exactly the problem of power supply noise.The method of existing suppression power supply noise has following two kinds:
The first, increase storage capacitor and decoupling circuit in direct voltage source;
The second, increases decoupling capacitor at load end, and is lamination by printed circuit design, to reach the effect of noise suppressed.
But above-mentioned two kinds of prior art means all cannot accurately calculate electric capacity value and electric capacity quantity, and then cause product cost too high, and the effect of noise suppressed is not remarkable.
Therefore, be necessary the method for the improvement power supply noise that a kind of mobile terminal is provided, circuit and system, avoid the generation of above-mentioned situation, improve Consumer's Experience.
Summary of the invention
Main purpose of the present invention is the method for the improvement power supply noise proposing a kind of mobile terminal, circuit and system, and being intended to solve in prior art cannot accurate Calculation passive device parameter and quantity and the high cost caused, higher inapparent problem.
For achieving the above object, a kind of circuit improving power supply noise provided by the invention, comprise voltage source output circuit, the first Dolby circuit, the second Dolby circuit, the 3rd Dolby circuit and load circuit, the parameter of described voltage source output circuit, described first Dolby circuit, described second Dolby circuit, described 3rd Dolby circuit and described load circuit is carried out classification process according to function class handling implement and calculates, wherein, described voltage source output circuit is used for providing voltage source signal, and described voltage source signal includes with power supply signal and power supply noise; The first end of described first Dolby circuit is connected with described voltage source output circuit, for receiving and processing low-frequency power noise; The first end of described second Dolby circuit is connected with the second end of described first Dolby circuit, for receiving and processing high frequency electric source noise; The first end of described 3rd Dolby circuit is connected with the second end of described second Dolby circuit, for receiving and processing described first Dolby circuit unfiltered low-frequency power noise and the unfiltered high frequency electric source noise of described second Dolby circuit and reception and process the noise of load power source.Described load circuit is connected with the second end of described 3rd Dolby circuit, for receiving the described useful power supply signal leached via described first Dolby circuit, described second Dolby circuit and described 3rd Dolby circuit.
Alternatively, described voltage source output circuit comprises the first resistance, the first inductance and the first electric capacity, the described first end of the first resistance is connected with the output of voltage source, second end of described first resistance is connected with the first end of described first inductance, second end of described first inductance is connected with the first end of described first electric capacity, the second end ground connection of described first electric capacity.
Alternatively, described first Dolby circuit comprises several the first branch roads, each first branch road comprises the second resistance, the second inductance and the second electric capacity, the first end of described second resistance is connected with described voltage source output circuit, second end of described second resistance is connected with the first end of described second inductance, second end of described second inductance is connected with the first end of described second electric capacity, the second end ground connection of described second electric capacity.
Alternatively, described second Dolby circuit comprises the 3rd resistance, the 3rd inductance and the 3rd electric capacity, the first end of described 3rd resistance is connected with described first Dolby circuit, second end of described 3rd resistance is connected with the first end of described 3rd inductance, second end of described 3rd inductance is connected with the first end of described 3rd electric capacity, the second end ground connection of described 3rd electric capacity.
Alternatively, described 3rd Dolby circuit comprises several the second branch roads, each second branch road comprises the 4th resistance, the 4th inductance and the 4th electric capacity, the first end of described 4th resistance is connected with described second Dolby circuit, second end of described 4th resistance is connected with the first end of described 4th inductance, second end of described 4th inductance is connected with the first end of described 4th electric capacity, the second end ground connection of described 4th electric capacity.
Alternatively, described load circuit comprises the 5th resistance, the 5th inductance and the 5th electric capacity, the first end of described 5th resistance is connected with described 3rd Dolby circuit, second end of described 5th resistance is connected with the first end of described 5th inductance, second end of described 5th inductance is connected with the first end of described 5th electric capacity, the second end ground connection of described 5th electric capacity.
In addition, for achieving the above object, the present invention also proposes a kind of method improving power supply noise, and described method comprises: input element parameter; Judge whether described component parameters meets the power supply noise specification demands preset; And when described component parameters meets default power supply noise specification demands, then obtain circuit parameter, described circuit parameter comprises element value and number of elements.
Alternatively, described judge that whether described component parameters meets the power supply noise specification demands preset before, also comprise: the formula transferring function library, and described component parameters calculated; Export the list corresponding with the classification result of described component parameters and chart data.
Alternatively, described method also comprises: input in master die by described circuit parameter, with the circuit of the power supply noise that is improved.
In addition, for achieving the above object, the present invention also proposes a kind of system improving power supply noise, comprise the circuit, voltage source, circuit improving device and the load device that improve power supply noise, described voltage source is provided voltage source for described circuit and is electrically connected by described circuit and described load device, input element parameter in described circuit improving device, when described circuit improving device judges that described component parameters meets default power supply noise specification demands, obtain described circuit parameter, described circuit parameter comprises element value and number of elements.
The method of improvement power supply noise that the present invention proposes, circuit and system, carry out classification process by the parameter of function class handling implement to voltage source output circuit, the first Dolby circuit, the second Dolby circuit, the 3rd Dolby circuit and load circuit and calculate, thus with minimum number of elements, reasonably value, power supply noise is effectively suppressed, have save product Material Cost effect, enhance product performance and the effect of Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the system framework figure of the improvement power supply noise realizing each embodiment of the present invention;
The circuit diagram of the improvement power supply noise that Fig. 2 provides for present pre-ferred embodiments;
The circuit diagram of the voltage source output circuit that Fig. 3 provides for present pre-ferred embodiments;
The circuit diagram of the first Dolby circuit that Fig. 4 provides for present pre-ferred embodiments;
The circuit diagram of the second Dolby circuit that Fig. 5 provides for present pre-ferred embodiments;
The circuit diagram of the 3rd Dolby circuit that Fig. 6 provides for present pre-ferred embodiments;
The circuit diagram of the load circuit that Fig. 7 provides for present pre-ferred embodiments;
The module diagram of the device of the improvement power supply noise that Fig. 8 provides for present pre-ferred embodiments;
The schematic flow sheet of the method for the improvement power supply noise that Fig. 9 provides for present pre-ferred embodiments.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix of such as " module ", " parts " or " unit " for representing element only in order to be conducive to explanation of the present invention, itself is specific meaning not.Therefore, " module " and " parts " can mixedly use.
Mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention can comprise the such as mobile terminal of mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP (portable media player), guider etc. and the fixed terminal of such as digital TV, desktop computer etc.Below, suppose that terminal is mobile terminal.But it will be appreciated by those skilled in the art that except the element except being used in particular for mobile object, structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
As shown in Figure 1, for realizing the system framework figure of the improvement power supply noise of each embodiment of the present invention.The system improving power supply noise comprises voltage source 100, improves the circuit 200 of power supply noise, load device 300 and circuit improving device 400.
Wherein, voltage source 100 provides voltage source for the circuit 200 improving power supply noise, and this voltage source 100 is electrically connected with load device 300 by the circuit 200 improving power supply noise.The circuit 200 improving power supply noise receives and processes the power supply noise of voltage source generation, so that the useful power supply signal after filtration is transferred to load device 300.Circuit improving device 400 estimates each element value and number of elements in the circuit 200 improving power supply noise, thus use the circuit of the element of minimum number, optimized power channel area and minimum volume, best noise reduction can be realized, save design space and farthest reduce product cost substantially.
Based on the above-mentioned system improving power supply noise, each embodiment of the inventive method is proposed.
As shown in Figure 2, the circuit diagram of the improvement power supply noise provided for present pre-ferred embodiments.Described circuit 200 comprises voltage source output circuit 210, first Dolby circuit 220, second Dolby circuit 230, the 3rd Dolby circuit 240 and load circuit 250.The parameter of voltage source output circuit 210, first Dolby circuit 220, second Dolby circuit 230, the 3rd Dolby circuit 240 and load circuit 250 in the present embodiment is carried out classification process according to function class handling implement and calculates.
Wherein, the voltage source signal that voltage source output circuit 210 receiver voltage source 100 exports, this voltage source signal includes with power supply signal and power supply noise.
First end and the voltage source output circuit 210 of the first Dolby circuit 220 are electrically connected, to receive and to process the low-frequency power noise in power supply noise.
Particularly, the first Dolby circuit 220 comprises multiple passive device, and with filtering low power supply noise, the plurality of passive device is according to that preset or common circuit layout folded structure mutually.In the present embodiment, passive device includes but not limited to resistance, inductance, electric capacity and Passive filter device etc.
The first end of the second Dolby circuit 230 is connected with the second end of the first Dolby circuit 220, to receive and to process high frequency electric source noise.
Particularly, the second Dolby circuit 230 comprises multiple loop element, and with filter high-frequency power supply noise, the plurality of loop element is according to that preset or common circuit layout folded structure mutually.In the present embodiment, passive device includes but not limited to circuit board trace, circuit board material, punching etc.
The first end of the 3rd Dolby circuit 240 is connected with the second end of the second Dolby circuit 230, to receive and process the first Dolby circuit 220 unfiltered low-frequency power noise and the unfiltered high frequency electric source noise of the second Dolby circuit 230 and reception and process the noise of load power source.
Particularly, 3rd Dolby circuit 240 both can filtering low power supply noise, can filter high-frequency power supply noise, also can the noise of filtration load power supply, thus further the noise that filtering and load power source produce is carried out to the power supply noise of the first Dolby circuit 220 and the unfiltered voltage source of the second Dolby circuit 230 and carry out filtering, play the effect effectively suppressing power supply noise.
Load circuit 250 is connected with the second end of the 3rd Dolby circuit 240, for receiving the described useful power supply signal leached via the first Dolby circuit 220, second Dolby circuit 230 and the 3rd Dolby circuit 240.
It will be appreciated by persons skilled in the art that quantity and the value of each passive device, loop element in the circuit 200 of the improvement power supply noise in the present embodiment are not specifically limited, the specification demands according to actual electrical potential source and expection is determined.
In other embodiments, according to the different parameters that function class handling implement calculates, in voltage source output circuit 210, first Dolby circuit 220, second Dolby circuit 230, the 3rd Dolby circuit 240 and load circuit 250, the value of each circuit element, quantity and the mode of building can correspondingly change.
Please refer to Fig. 3, is the circuit diagram of the voltage source output circuit that present pre-ferred embodiments provides.In the present embodiment, voltage source output circuit 210 comprises the first resistance R1, the first inductance L 1 and the first electric capacity C1.The first end of the first resistance R1 is connected with the output of voltage source 100, and second end of the first resistance R1 is connected with the first end of the first inductance L 1, and the second end of the first inductance L 1 is connected with the first end of the first electric capacity C1, the second end ground connection of the first electric capacity C1.
Please refer to Fig. 4, is the circuit diagram of the first Dolby circuit that present pre-ferred embodiments provides.In the present embodiment, the first Dolby circuit 220 comprises X the first branch road, and each first branch road comprises the second resistance R2, the second inductance L 2 and the second electric capacity C2.The first end of the second resistance R2 is as the input of the first Dolby circuit 220, and be connected with voltage source output circuit 210, second end of the second resistance R2 is connected with the first end of the second inductance L 2, second end of the second inductance L 2 is connected with the first end of the second electric capacity C2, the second end ground connection of the second electric capacity C2.Filtering can be carried out to the low-frequency noise signal inputted from voltage source 100 by above-mentioned connection.
Please refer to Fig. 5, is the circuit diagram of the second Dolby circuit that present pre-ferred embodiments provides.In the present embodiment, the second Dolby circuit 230 comprises the 3rd resistance R3, the 3rd inductance L 3 and the 3rd electric capacity C3.The first end of the 3rd resistance R3 is as the input of the second Dolby circuit 230, and be connected with the first Dolby circuit 220, second end of the 3rd resistance R3 is connected with the first end of the 3rd inductance L 3, second end of the 3rd inductance L 3 is connected with the first end of the 3rd electric capacity C3, the second end ground connection of the 3rd electric capacity C3.Filtering can be carried out to the HF noise signal inputted from voltage source 100 by above-mentioned connection.
Please refer to Fig. 6, is the circuit diagram of the 3rd Dolby circuit that present pre-ferred embodiments provides.In the present embodiment, the 3rd Dolby circuit 240 comprises Y the second branch road, and each second branch road comprises the 4th resistance R4, the 4th inductance L 4 and the 4th electric capacity C4.The first end of the 4th resistance R4 is as the input of the 3rd Dolby circuit 240, and be connected with the second Dolby circuit 230, second end of the 4th resistance R4 is connected with the first end of the 4th inductance L 4, second end of the 4th inductance L 4 is connected with the first end of the 4th electric capacity C4, the second end ground connection of the 4th electric capacity C4.Can believe and carry out filtering the noise of the HF noise signal inputted from voltage source 100 and low-frequency noise signal and load power source generation by above-mentioned connection.
Please refer to Fig. 7, is the circuit diagram of the load circuit that present pre-ferred embodiments provides.In the present embodiment, load circuit 250 comprises the 5th resistance R5, the 5th inductance L 5 and the 5th electric capacity C5.The first end of the 5th resistance R5 is connected with the 3rd Dolby circuit 240 as input, second end of the 5th resistance R5 is connected with the first end of the 5th inductance L 5, second end of the 5th inductance L 5 is connected with the first end of the 5th electric capacity C5, the second end ground connection of the 5th electric capacity C5.
Please refer to Fig. 8, the module diagram of the device of the improvement power supply noise provided for present pre-ferred embodiments.Described device 400 comprises:
Input module 810, for input element parameter.
Particularly, enter parameter designing interactive interface, and building database, this database is by adopting the folded structure of conventional or special application, and direct current or voltage source scheme determine the parameter that may use in design circuit process, such as: the cabling of circuit board, material, the position of punching, the parameter etc. of passive device.Wherein, passive device includes but not limited to resistance, inductance, electric capacity, Passive filter device etc.Parameter comprises value and quantity etc.
Further, these parameters carry out classification process by function class handling implement, are stored into the position of function library in corresponding instrument.
Enter user's inputting interface, and by this interface input member parameter.This component parameters refers to the precompensation parameter of any one or multiple element in system.
Transferring module 820, for transferring the formula of function library, and described component parameters being calculated.
Particularly, after the component parameters of input element, the function library in calls tool, uses the formula adapted to calculate described component parameters.The principle that function library calculates carries out power supply loop and passive device Accurate Analysis according to electric power network distribution theory, improve with minimum power channel area, the minimum power supply noise of passive device quantity to whole passage, and the demand of optimum power noise can be reached, thus effectively reaching under optimum performance prerequisite, reduce costs substantially and risk.
Further, the editor of function library can use all kinds of programming language or directly use arbitrary data process software to set up.
Data outputting module 830, for exporting the list corresponding with the classification result of described component parameters and chart data.
Particularly, after being analyzed by function library, export the list corresponding with the classification result of described component parameters and chart data.
Judge module 840, for judging whether described component parameters meets the power supply noise specification demands preset.
Particularly, judge whether to meet the specification demands exchanging one of loop circuit impedance, loop general supply noise or its combination according to described list and chart data.
Parameter acquisition module 850, when described component parameters meets default power supply noise specification demands, then obtain circuit parameter, described circuit parameter comprises element value and number of elements.
Particularly, when described component parameters meets default power supply noise specification demands, parameter acquisition module 850 obtains the parameter information of voltage source output circuit 210, first Dolby circuit 220, second Dolby circuit 230, the 3rd Dolby circuit 240 and each element of load circuit 250, thus obtains the circuit parameter of circuit 200.
Circuit acquisition module 860, for inputing in master die by described circuit parameter, with the circuit of the power supply noise that is improved.
Particularly, after acquisition circuit parameter, this circuit parameter is inputed in the master die of Fig. 2-7, thus obtains the complete circuit that can improve power supply noise.
Further, the part passive device parameter in circuit can also be changed mutually by the mutual of function library and printed-circuit path parameter.
In other embodiments, the component parameters inputted by input module 810 also can be the parameter of voltage source, via transferring module 820, this voltage source parameter is calculated, obtain the component parameters estimated, input this component parameters estimated by input module 810 again, then transfer formulae discovery draw corresponding list and chart data by transferring module 820 and data outputting module 830.Thus make each component values of calculating more accurate.
The circuit of the improvement power supply noise calculated by the device 400 improving power supply noise can with minimum number of elements, reasonably value, minimum power source path area, the volume of circuit in maximum reduction product, has the effect of saving product Material Cost.Meanwhile, for miscellaneous part reserves more space, and then improve the performance of Total Product and improve Consumer's Experience.Such as, concerning battery, the isolation distance increased between parts contributes to the stability improving battery; The isolated area of antenna, the power supply noise of suppression improves the susceptibility of antenna; The isolated area of camera, the power supply noise of suppression improves the noise immunity of camera.
Please refer to Fig. 9, the schematic flow sheet of the method for the improvement power supply noise provided for another preferred embodiment of the present invention.Described method comprises step:
S910, input element parameter.
Particularly, enter parameter designing interactive interface, and building database, this database is by adopting the folded structure of conventional or special application, and direct current or voltage source scheme determine the parameter that may use in design circuit process, such as: the cabling of circuit board, material, the position of punching, the parameter etc. of passive device.Wherein, passive device includes but not limited to resistance, inductance, electric capacity, Passive filter device etc.Parameter comprises value and quantity etc.
Further, these parameters carry out classification process by function class handling implement, are stored into the position of function library in corresponding instrument.
Enter user's inputting interface, and by this interface input member parameter.This component parameters refers to the precompensation parameter of any one or multiple element in system.
Further, in other embodiments, also step is comprised before S910:
S901, input voltage source dates;
S902, transfer the formula of function library, and described voltage source parameter is calculated, obtain the component parameters estimated.Thus make each component values of calculating more accurate.
S920, transfer the formula of function library, and described component parameters is calculated.
Particularly, after the component parameters of input element, the function library in calls tool, uses the formula adapted to calculate described component parameters.The principle that function library calculates carries out power supply loop and passive device Accurate Analysis according to electric power network distribution theory, improve with minimum power channel area, the minimum power supply noise of passive device quantity to whole passage, and the demand of optimum power noise can be reached, thus effectively reaching under optimum performance prerequisite, reduce costs substantially and risk.
Further, the editor of function library can use all kinds of programming language or directly use arbitrary data process software to set up.
S930, the output list corresponding with the classification result of described component parameters and chart data.
Particularly, after being analyzed by function library, export the list corresponding with the classification result of described component parameters and chart data.
S940, judge that whether described component parameters meets the power supply noise specification demands preset.
Particularly, judge whether to meet the specification demands exchanging one of loop circuit impedance, loop general supply noise or its combination according to described list and chart data.If so, then S950 is entered; If not, then S910 is returned.
S950, acquisition circuit parameter, described circuit parameter comprises element value and number of elements.
Particularly, when described component parameters meets default power supply noise specification demands, obtain the parameter information of voltage source output circuit 210, first Dolby circuit 220, second Dolby circuit 230, the 3rd Dolby circuit 240 and each element of load circuit 250, thus obtain the circuit parameter of circuit 200.
S960, described circuit parameter is inputed in master die, with the circuit of the power supply noise that is improved.
Particularly, after acquisition circuit parameter, this circuit parameter is inputed in the master die of Fig. 2-7, thus obtains the complete circuit that can improve power supply noise.
Further, the part passive device parameter in circuit can also be changed mutually by the mutual of function library and printed-circuit path parameter.
The method of the improvement power supply noise that the present embodiment provides, the circuit of the improvement power supply noise calculated can with minimum number of elements, reasonably value, minimum power source path area, the volume of circuit in maximum reduction product, has the effect of saving product Material Cost.Meanwhile, for miscellaneous part reserves more space, and then improve the performance of Total Product and improve Consumer's Experience.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, air conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. one kind is improved the circuit of power supply noise, it is characterized in that, comprise voltage source output circuit, the first Dolby circuit, the second Dolby circuit, the 3rd Dolby circuit and load circuit, the parameter of described voltage source output circuit, described first Dolby circuit, described second Dolby circuit, described 3rd Dolby circuit and described load circuit is carried out classification process according to function class handling implement and calculates, wherein
Described voltage source output circuit is used for providing voltage source signal, and described voltage source signal includes with power supply signal and power supply noise;
The first end of described first Dolby circuit is connected with described voltage source output circuit, for receiving and processing low-frequency power noise;
The first end of described second Dolby circuit is connected with the second end of described first Dolby circuit, for receiving and processing high frequency electric source noise;
The first end of described 3rd Dolby circuit is connected with the second end of described second Dolby circuit, for receiving and processing described first Dolby circuit unfiltered low-frequency power noise and the unfiltered high frequency electric source noise of described second Dolby circuit and reception and process the noise of load power source.
Described load circuit is connected with the second end of described 3rd Dolby circuit, for receiving the described useful power supply signal leached via described first Dolby circuit, described second Dolby circuit and described 3rd Dolby circuit.
2. the circuit improving power supply noise according to claim 1, it is characterized in that, described voltage source output circuit comprises the first resistance, the first inductance and the first electric capacity, the described first end of the first resistance is connected with the output of voltage source, second end of described first resistance is connected with the first end of described first inductance, second end of described first inductance is connected with the first end of described first electric capacity, the second end ground connection of described first electric capacity.
3. the circuit improving power supply noise according to claim 1, it is characterized in that, described first Dolby circuit comprises several the first branch roads, each first branch road comprises the second resistance, the second inductance and the second electric capacity, the first end of described second resistance is connected with described voltage source output circuit, second end of described second resistance is connected with the first end of described second inductance, and the second end of described second inductance is connected with the first end of described second electric capacity, the second end ground connection of described second electric capacity.
4. the circuit improving power supply noise according to claim 1, it is characterized in that, described second Dolby circuit comprises the 3rd resistance, the 3rd inductance and the 3rd electric capacity, the first end of described 3rd resistance is connected with described first Dolby circuit, second end of described 3rd resistance is connected with the first end of described 3rd inductance, second end of described 3rd inductance is connected with the first end of described 3rd electric capacity, the second end ground connection of described 3rd electric capacity.
5. the circuit improving power supply noise according to claim 1, it is characterized in that, described 3rd Dolby circuit comprises several the second branch roads, each second branch road comprises the 4th resistance, the 4th inductance and the 4th electric capacity, the first end of described 4th resistance is connected with described second Dolby circuit, second end of described 4th resistance is connected with the first end of described 4th inductance, and the second end of described 4th inductance is connected with the first end of described 4th electric capacity, the second end ground connection of described 4th electric capacity.
6. the circuit improving power supply noise according to claim 1, it is characterized in that, described load circuit comprises the 5th resistance, the 5th inductance and the 5th electric capacity, the first end of described 5th resistance is connected with described 3rd Dolby circuit, second end of described 5th resistance is connected with the first end of described 5th inductance, second end of described 5th inductance is connected with the first end of described 5th electric capacity, the second end ground connection of described 5th electric capacity.
7. improve a method for power supply noise, it is characterized in that, described method comprises:
Input element parameter;
Judge whether described component parameters meets the power supply noise specification demands preset; And
When described component parameters meets default power supply noise specification demands, then obtain circuit parameter, described circuit parameter comprises element value and number of elements.
8. the method improving power supply noise according to claim 7, is characterized in that, described judge that whether described component parameters meets the power supply noise specification demands preset before, also comprise:
Transfer the formula of function library, and described component parameters is calculated;
Export the list corresponding with the classification result of described component parameters and chart data.
9. the method improving power supply noise according to claim 7, is characterized in that, described method also comprises:
Described circuit parameter is inputed in master die, with the circuit of the power supply noise that is improved.
10. one kind is improved the system of power supply noise, it is characterized in that, comprise the circuit of the arbitrary described improvement power supply noise of claim 1-6, described system also comprises voltage source, circuit improving device and load device, described voltage source is provided voltage source for described circuit and is electrically connected by described circuit and described load device, input element parameter in described circuit improving device, when described circuit improving device judges that described component parameters meets default power supply noise specification demands, obtain described circuit parameter, described circuit parameter comprises element value and number of elements.
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| CN108458468A (en) * | 2018-06-19 | 2018-08-28 | 奥克斯空调股份有限公司 | A kind of denoising device and air conditioner |
| CN113194389A (en) * | 2021-04-29 | 2021-07-30 | 四川虹美智能科技有限公司 | Power supply noise reduction circuit and system |
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| CN105306636B (en) | 2020-09-29 |
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