CN102214998A - Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit - Google Patents
Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit Download PDFInfo
- Publication number
- CN102214998A CN102214998A CN201010165256XA CN201010165256A CN102214998A CN 102214998 A CN102214998 A CN 102214998A CN 201010165256X A CN201010165256X A CN 201010165256XA CN 201010165256 A CN201010165256 A CN 201010165256A CN 102214998 A CN102214998 A CN 102214998A
- Authority
- CN
- China
- Prior art keywords
- signal
- series resonance
- isolation
- circuit
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Analogue/Digital Conversion (AREA)
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Abstract
The invention relates to an isolated sampling device for a numerical-control LLC (logical link control) series resonance transformation circuit, and the device provided by the invention comprises the numerical-control LLC series resonance transformation circuit, an isolated sampling circuit and a DSP (digital signal processor), wherein the signal input end of the isolated sampling circuit is connected with the secondary side output end of a main transformer of the numerical-control LLC series resonance transformation circuit so as to receive voltage signals; the control input end of the isolated sampling circuit is connected with the general input/output port of the DSP so as to receive control signals; the isolated sampling circuit carries out isolated sampling on the voltage signals based on the control signals so as to generate isolated sampling signals; and the DSP is arranged at the primary side of the main transformer of the numerical-control LLC series resonance transformation circuit and the signal input end of the DSP is connected with the signal output end of the isolated sampling circuit so as to receive the isolated sampling signals. The isolated sampling device can be used for carrying out numerical-control isolated sampling on the secondary side of the main transformer of the numerical-control LLC series resonance transformation circuit.
Description
Technical field
The present invention relates to fields of numeric control technique, more particularly, relate to a kind of numerical control LLC series resonance translation circuit and isolate sampling apparatus.
Background technology
Along with the development of switch power technology, high-power, high efficiency, high frequencyization have become the development trend of Switching Power Supply.High frequencyization can effectively reduce the Switching Power Supply volume, yet the too high meeting of frequency brings the problem of switching tube loss increase, is unfavorable for improving the efficient of power supply.LLC series resonance translation circuit can satisfy the requirement of high frequencyization as a kind of special circuit topology, can reach higher conversion efficiency again, under the promotion of high efficiency development trend, by industry-wide adoption.
Along with the development of digital signal processing chip, digital control technology also applies in the power supply industry gradually.Adopt digital controlly, not only can simplify the design of hardware circuit, improve system reliability, antijamming capability, and easily adopt advanced control method, thereby control flexibly.Simultaneously, the development of very lagre scale integrated circuit (VLSIC) can provide the more digital signal processing chip of high-performance and speed, and also the Digital Control for Switching Power Supply provides condition.
In numerical control LLC series resonance translation circuit, because main transformer original edge voltage Vin is higher, and secondary output voltage V o is lower, and safe and reliable for circuit needs to carry out electrical isolation between former limit and the secondary.When digital signal processor (DSP) is arranged on the former limit of transformer, need to solve isolating problem to the secondary voltage sampling.The sampling of the secondary voltage of common numerical control LLC series resonance translation circuit usually adopts the high-speed linear optocoupler to realize in the prior art, as shown in Figure 1.
Yet the high-speed linear optocoupler not only holds at high price, and the stability of its current transfer ratio (ratio of electric current of the electric current of the output photoelectric tube of optocoupler and input LED just) is not high.Therefore, thus this current transfer ratio usually easily changes and has influence on the stability of isolating sample circuit.Therefore, need a kind of cost lower, the numerical control LLC series resonance translation circuit that reliability is high is isolated sampling apparatus.
Summary of the invention
The technical problem to be solved in the present invention is, the too high and unsettled defective of current transfer ratio of high-speed linear optocoupler cost at the secondary voltage sampling that is used for numerical control LLC series resonance translation circuit of prior art, provide a kind of cost lower, the numerical control LLC series resonance translation circuit that reliability is high is isolated sampling apparatus.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of numerical control LLC series resonance translation circuit and isolate sampling apparatus, comprise numerical control LLC series resonance translation circuit, isolate sample circuit and digital signal processor, wherein
The signal input part of described isolation sample circuit connects the secondary output of main transformer of described numerical control LLC series resonance translation circuit to receive voltage signal, and the control input end of described isolation sample circuit connects the universal input and output port of described digital signal processor to receive control signal;
Described isolation sample circuit is isolated sampling based on described control signal to described voltage signal and is isolated sampled signal to generate;
Described digital signal processor is arranged on the former limit of the main transformer of described numerical control LLC series resonance translation circuit, and the signal input part of described digital signal processor connects the signal output part of described isolation sample circuit to receive described isolation sampled signal.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described isolation sample circuit comprises switch module and transformer;
The first input end of the former limit winding of described transformer connects the signal input part of described isolation sample circuit to receive voltage signal, second input of the former limit winding of described transformer connects first end of described switch module, the second end ground connection of described switch module, the signal input end of described switch module connect the control input end of described isolation sample circuit to receive described control signal; When under the control of described switch module in described control signal during conducting, sampled signal is isolated in the output of the secondary of described transformer.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described switch module comprises switching tube and drive circuit; The input of described drive circuit connects the signal input end of described switch module to receive described control signal and to export the isolation drive signal based on described control signal; The output that the grid of described switching tube connects described drive circuit is to receive described isolation drive signal and based on described isolation drive signal conduction or shutoff, the source ground of described switching tube, drain electrode connect second input of the former limit winding of described transformer.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described switching tube is mos field effect transistor or insulated gate bipolar transistor; Described drive circuit is an isolated drive circuit.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described digital signal processor comprises the analog-to-digital conversion module that is used for described isolation sampled signal is converted to digital signal, be used to generate the control signal generation module of described control signal and be used to regulate described control signal and described analog-to-digital conversion module so that described analog-to-digital conversion module accurately obtain the adjustment module of described isolation sampled signal.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, further comprise being used to handle described isolation sampled signal to generate the secondary signal processing module of effective isolation sampled signal; The first input end of described secondary signal processing module connects secondary first output of described transformer, second input of described secondary signal processing module connects secondary second output of described transformer to receive described isolation sampled signal, and the sampled signal output of described secondary signal processing module connects the signal input part of described digital signal processor to export effective isolation sampled signal.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, further comprise the first magnetic reset circuit between second input of former limit winding of the first input end of the former limit winding that is arranged on described transformer and described transformer.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, further comprise the second magnetic reset circuit between second end of first end that is arranged on described switch module and described switch module.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described secondary signal processing module comprises that secondary second output that is connected to described transformer is to receive and to handle the transformation of scale unit of described isolation sampled signal, secondary second output that is connected to described transformer is to be used for receiving and handling described isolation sampled signal proportional integral converter unit, secondary second output that is connected to described transformer is to be used for receiving and handling described isolation sampled signal proportion integration differentiation converter unit, secondary second output that is connected to described transformer be used to receive and the filter unit of the described isolation sampled signal of filtering or secondary second output that is connected to described transformer with the clamp units of the voltage that is used for the described isolation sampled signal of clamper.
Isolate in the sampling apparatus at numerical control LLC series resonance translation circuit of the present invention, described LLC series resonance translation circuit is full-bridge or half-bridge numerical control LLC series resonance translation circuit.
Implement numerical control LLC series resonance translation circuit of the present invention and isolate sampling apparatus, when digital signal processor is arranged on the former limit of main transformer, thereby can generate the isolation sampled signal by using the isolation sample circuit that the output voltage signal of secondary is isolated sampling, and receive this isolation sampled signal by digital signal processor, make it possible to apply in the sample circuit, by the digital control isolation sampling that realizes the main transformer secondary of LLC series resonance translation circuit with digital control.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit theory diagrams of the employing light-coupled isolation sampling numerical control LLC series resonance translation circuit of prior art;
Fig. 2 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated first embodiment of sampling apparatus;
Fig. 3 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated second embodiment of sampling apparatus;
Fig. 4 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 3rd embodiment of sampling apparatus;
Fig. 5 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 4th embodiment of sampling apparatus;
Fig. 6 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 5th embodiment of sampling apparatus;
Fig. 7 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 6th embodiment of sampling apparatus;
Fig. 8 is that numerical control LLC series resonance translation circuit of the present invention is isolated the control signal Vpulse of sampling apparatus and the signal waveforms of isolating sampled signal Vsample.
Embodiment
Fig. 2 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated first embodiment of sampling apparatus.As shown in Figure 2, numerical control LLC series resonance translation circuit of the present invention is isolated sampling apparatus and is comprised numerical control LLC series resonance translation circuit 30, isolation sample circuit 10 and digital signal processor 20.Wherein, the signal input part of described isolation sample circuit 10 is connected to the secondary output of main transformer of described LLC series resonance translation circuit 30 to receive voltage signal Vdc, and the control input end of described isolation sample circuit 10 is connected to the universal input and output port GPIO of described digital signal processor 20 to receive control signal Vpulse.Described isolation sample circuit 10 is isolated sampling based on described control signal Vpulse to described voltage signal Vdc and is isolated sampled signal Vsample to generate.Described digital signal processor 20 is arranged on the former limit of the main transformer of described LLC series resonance translation circuit 30, and the signal input part ADC of described digital signal processor 20 is connected to the signal output part of described isolation sample circuit 10 to receive described isolation sampled signal Vsample.
The operation principle that numerical control LLC series resonance translation circuit shown in Figure 2 is isolated sampling apparatus is as follows: the universal input and output port GPIO of digital signal processor 20 sends control signal Vpulse, described isolation sample circuit 10 is isolated sampling based on described control signal Vpulse to described voltage signal Vdc, obtain suitable isolation sampled signal Vsample, send back to digital signal processor 20 again, thereby realize sampling and control to voltage signal Vdc, promptly isolate sample circuit 10, when needs are sampled, sample by digital signal processor 20 controls.
In a preferred embodiment of the invention, the control signal Vpulse and the waveform of isolating sampled signal Vsample as shown in Figure 8, control signal Vpulse is to be Ts in the cycle, the high-frequency impulse ripple that duty ratio is fixing.It is effective control signal (but high level is effective or low level effective) during Ton, during this, being isolated sample circuit 10 from the voltage signal Vo of the secondary output output of the main transformer of LLC series resonance translation circuit receives as voltage signal Vdc, described isolation sample circuit 10 is isolated sampling based on described control signal Vpulse to described voltage signal Vdc, obtain suitable isolation sampled signal Vsample, send back to digital signal processor 20 again.Under the control of control signal Vpulse, it is just effective in the time at Ton to isolate sampled signal Vsample, consider from control signal Vpulse to the time-delay of isolating sampled signal Vsample circuit transmission, time-delay Td after the time digital signal processor 20 just carry out AD and sample.
In each embodiment of the present invention, the isolation sample circuit that described isolation sample circuit 10 can be an any kind.Various isolation sample circuit as known in the art may be used to the present invention.The present invention is not isolated the restriction of the type of sample circuit at this.Described digital signal processor 20 can be isolated the isolation sampled signal Vsample that sample circuit 10 receives simulation from this, and it is carried out analog-to-digital conversion, thereby realizes digitized sampling and control.In the following example of the present invention, show preferred isolation sample circuit and digital signal processor.
Implement numerical control LLC series resonance translation circuit of the present invention and isolate sampling apparatus, when digital signal processor is arranged on the former limit of main transformer, thereby can generate the isolation sampled signal by using the isolation sample circuit that the output voltage signal of secondary is isolated sampling, and receive this isolation sampled signal by digital signal processor, make it possible to apply in the sample circuit, by the digital control isolation sampling that realizes the main transformer secondary of LLC series resonance translation circuit with digital control.
Fig. 3 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated second embodiment of sampling apparatus.The preferred isolation sample circuit 10 of numerical control LLC series resonance translation circuit isolation sampling apparatus has been shown among Fig. 3.In the present embodiment, isolate sample circuit 10 and comprise switch module 100 and transformer T1.The signal input part that the first input end of the former limit winding of wherein said transformer T1 is connected to described isolation sample circuit 10 is to receive voltage signal Vdc from the secondary output of the main transformer of LLC series resonance translation circuit (this is not shown, can referring to Fig. 4).Second input of the former limit winding of described transformer T1 is connected to first end of described switch module 100.The second end ground connection of described switch module 100.The signal input end of described switch module 100 is connected to the control input end of described isolation sample circuit 10 to receive described control signal Vpulse; When under the control of described switch module 100 at described control signal Vpulse during conducting, sampled signal Vsample is isolated in the output of the secondary of described transformer T1.
Its operation principle is as follows, and the universal input and output port GPIO of digital signal processor 20 sends control signal Vpulse.The signal input end of described switch module 100 receives described control signal Vpulse, and based on described control signal Vpulse conducting or shutoff.When under the control of described switch module 100 at described control signal Vpulse during conducting, sampled signal Vsample is isolated in the output of the secondary of described transformer T1.This isolation sampled signal Vsample returns described digital signal processor 20 through the signal input part ADC of described digital signal processor 20.
In the embodiment show in figure 3, described switch module 100 can be the device for power switching that driven by drive circuit, also can be manually or automatically to control intelligent switch module closed and that turn-off, even also can be common manual or automatic switch device by the user.In a preferred embodiment of the invention, described switching tube Q1 can be mos field effect transistor (MOSFET), it also can be insulated gate bipolar transistor (IGBT), can also be other device for power switching, its drive circuit can be isolated drive circuit or non-isolated drive circuit.
Fig. 4 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 3rd embodiment of sampling apparatus.LLC series resonance translation circuit as shown in Figure 4 is asymmetric half-bridge LLC series resonance translation circuit.In other embodiments of the invention, this LLC series resonance translation circuit can also be the full-bridge LLC series resonance translation circuit of symmetry.In this embodiment, described isolation sample circuit 10 comprises transformer T1, mos field effect transistor Q1, drive circuit 101.As shown in Figure 4, the first input end of the former limit winding of described transformer T1 is connected to the output of main transformer T2 of asymmetric half-bridge LLC series resonance translation circuit to receive output voltage V o as voltage signal Vdc, and second input of the former limit winding of described transformer T1 connects the drain electrode of described mos field effect transistor Q1.The source ground of described mos field effect transistor Q1.The input of described drive circuit 101 receives control signal Vpulse and exports the isolation drive signal based on described control signal Vpulse from described digital signal processor 20.The grid of described mos field effect transistor Q1 is to receive described isolation drive signal and based on described isolation drive signal conduction or shutoff.
In the present embodiment, this numerical control LLC series resonance translation circuit is isolated sampling apparatus and is further comprised secondary signal processing module 200.Second input that the first input end of described secondary signal processing module 200 is connected to secondary first output of described transformer T1, described secondary signal processing module 200 is connected to secondary second output of described transformer T1 to receive described isolation sampled signal Vsample.Described secondary signal processing module 200 carries out necessary processing according to actual conditions to Vsample, and the sampled signal output of described subsequently secondary signal processing module 200 is connected to the signal input part ADC of described digital signal processor 20 to export effective isolation sampled signal V ' sample.
Fig. 5 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 4th embodiment of sampling apparatus.Fig. 5 and Fig. 4 are similar substantially, and its difference is, comprises at digital signal processor described in Fig. 5 20: ADC module 21 (being analog-to-digital conversion module), control signal generation module 22 and adjustment module 23.Effective isolation sampled signal V ' sample that wherein said analog-to-digital conversion module 21 receives after handling from secondary signal processing module 200, and convert thereof into digital signal.Described control signal generation module 22 is used to generate described control signal Vpulse so that drive circuit 101 to take place to give.Described adjustment module 23 be used to simultaneously to regulate described control signal generation module 22 generate described control signal Vpulse and regulate described analog-to-digital conversion module 21 so that described analog-to-digital conversion module 21 accurately obtain described effective isolation sampled signal V ' sample's.
Those skilled in the art know that digital signal processor described in the present embodiment 20 also can be used for the embodiment of Fig. 2-Fig. 3, and the embodiment of the mentioned Fig. 6-8 in back.According to instruction of the present invention, those skilled in the art know how the digital signal processor 20 of using among Fig. 5 is used for the foregoing description, the back just has been not repeated.
Fig. 6 is the theory diagram that numerical control LLC series resonance translation circuit of the present invention is isolated the 5th embodiment of sampling apparatus.In the preferred embodiment of Fig. 6, the first input end of the former limit winding of described transformer T1 is connected to the output of main transformer of asymmetric half-bridge LLC series resonance translation circuit to receive output voltage V o as voltage signal Vdc (this is not shown), and second input of the former limit winding of described transformer T1 connects the drain electrode of described mos field effect transistor Q1.The source ground of described mos field effect transistor Q1.The input of described drive circuit 101 receives control signal Vpulse and exports the isolation drive signal based on described control signal Vpulse from described digital signal processor 20.The grid of described mos field effect transistor Q1 is to receive described isolation drive signal and based on described isolation drive signal conduction or shutoff.The first magnetic reset circuit 300 is arranged between second input of former limit winding of the first input end of former limit winding of described transformer T1 and described transformer T1.In other preferred embodiments of the present invention, also can comprise the second magnetic reset circuit 400.The second magnetic reset circuit 400 can be arranged between the source electrode and drain electrode of mos field effect transistor Q, and then guarantee that transformer T1 can safe and reliable work (referring to Fig. 7).In the present invention, can use any magnetic reset circuit well known in the prior art, those skilled in the art know and can obtain various magnetic reset circuit, state with regard to no longer tiring out at this.Those skilled in the art know, the first magnetic reset circuit 300 or the second magnetic reset circuit 400 can only be set respectively.The first magnetic reset circuit 300 and the second magnetic reset circuit 400 also can be set simultaneously.
In the embodiment show in figure 6, described secondary signal processing module 200 can comprise transformation of scale unit 201, filter unit 204 and clamp units 205.In this embodiment, described clamp units 205 is connected to the secondary of described transformer T1, is used for the described isolation sampled signal of clamp Vsample.Then, Vsample carries out filtering by 204 pairs of described isolation sampled signals of clamp of filter unit, generates clamp filtering and isolates sampled signal Vsample ".Described transformation of scale unit 201 receives described clamp filtering and isolates sampled signal Vsample " and it is carried out ratio change the effective isolation sampled signal Vsample ' after handling with output.In other embodiments of the invention, can adopt proportional integral converter unit 202 (as shown in Figure 7) or proportion integration differentiation converter unit (not shown) to substitute transformation of scale unit 201.
At this, those skilled in the art are known and can obtain aforementioned proportion converter unit 201, proportional integral converter unit 202, proportion integration differentiation converter unit, filter unit 204 and clamp units 205.Any above-mentioned functions module as known in the art may be used to the present invention, has stated with regard to no longer its structure being tired out at this.In addition, those skilled in the art can select any known signal processing unit to carry out required processing so that it adapts to the needs of analog-to-digital conversion module 201 better to isolating sampled signal Vsample according to actual needs.
In simplified embodiment of the present invention, the former limit winding that can be by adjusting transformer T1 and the turn ratio of secondary winding make the isolation sampled signal Vsample of secondary output of transformer T1 need not to carry out next step processing, just can be for the detection and the control use of digital signal processor 20.
In other preferred embodiments of the present invention, described secondary signal processing module 200 comprises one and described filter unit 204 in described transformation of scale unit 201, proportional integral converter unit 202, the proportion integration differentiation converter unit.Such as, when described secondary signal processing module 200 comprises filter unit 204 and transformation of scale unit 201, described filter unit 204 is connected to the secondary of described transformer T1, be used for the described isolation sampled signal of filtering, isolation sampled signal after described transformation of scale unit 201 accepts filter from described filter unit 204, and filtered isolation sampled signal carried out transformation of scale.
In other preferred embodiments of the present invention, described secondary signal processing module 200 comprises one and described clamp units 205 in described transformation of scale unit 201, proportional integral converter unit 202, the proportion integration differentiation converter unit.Such as, when described secondary signal processing module 200 comprises clamp units 205 and transformation of scale unit 201, described clamp units 205 is connected to the secondary of described transformer T1, be used for the described isolation sampled signal of clamp, described transformation of scale unit 201 receives isolation sampled signal behind the clamps from described clamp units 205, and the isolation sampled signal behind the described clamp is carried out transformation of scale.
In another kind of preferred embodiment of the present invention, described secondary signal processing module 200 can include only described clamp units 205 and filter unit 204, wherein said clamp units 205 is connected to the secondary of described transformer T1 with the described isolation sampled signal of clamper, described filter unit 204 is connected to described clamp units 205 receiving the isolation sampled signal after the clamper, and the isolation sampled signal after the described clamper is carried out filtering.
In preferred embodiment of the present invention, described secondary signal processing module 200 further comprises one in described transformation of scale unit 201, proportional integral converter unit 202, the proportion integration differentiation converter unit, described filter unit 204 and described clamp units 205.
Implement numerical control LLC series resonance translation circuit of the present invention and isolate sampling apparatus, when digital signal processor is arranged on the former limit of main transformer, thereby can generate the isolation sampled signal by using the isolation sample circuit that the output voltage signal of secondary is isolated sampling, and receive this isolation sampled signal by digital signal processor, make it possible to apply in the sample circuit, by the digital control isolation sampling that realizes the main transformer secondary of LLC series resonance translation circuit with digital control.In addition, also use the magnetic reset circuit, guaranteed the work that transformer can be safe and reliable, and then guaranteed the stable and reliable of whole numerical control isolation sampling apparatus.
Though the present invention describes by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (10)
1. a numerical control LLC series resonance translation circuit is isolated sampling apparatus, it is characterized in that, and comprise numerical control LLC series resonance translation circuit (30), isolate sample circuit (10) and digital signal processor (20),
The signal input part of described isolation sample circuit (10) connects the secondary output of main transformer of described numerical control LLC series resonance translation circuit (30) to receive voltage signal (Vdc), and the control input end of described isolation sample circuit (10) connects the universal input and output port (GPIO) of described digital signal processor (20) to receive control signal (Vpulse);
Described isolation sample circuit (10) is isolated sampling based on described control signal (Vpulse) to described voltage signal (Vdc) and is isolated sampled signal (Vsample) to generate;
Described digital signal processor (20) is arranged on the former limit of the main transformer of described numerical control LLC series resonance translation circuit (30), and the signal input part (ADC) of described digital signal processor (20) connects the signal output part of described isolation sample circuit (10) to receive described isolation sampled signal (Vsample).
2. numerical control LLC series resonance translation circuit according to claim 1 is isolated sampling apparatus, it is characterized in that described isolation sample circuit (10) comprises switch module (100) and transformer (T1);
The first input end of the former limit winding of described transformer (T1) connects the signal input part of described isolation sample circuit (10) to receive voltage signal (Vdc), second input of the former limit winding of described transformer (T1) connects first end of described switch module (100), the second end ground connection of described switch module (100), the signal input end of described switch module (100) connect the control input end of described isolation sample circuit (10) to receive described control signal (Vpulse); When described switch module (100) under the control of described control signal (Vpulse) during conducting, sampled signal (Vsample) is isolated in the output of the secondary of described transformer (T1).
3. numerical control LLC series resonance translation circuit according to claim 2 is isolated sampling apparatus, it is characterized in that, described switch module (100) comprises switching tube (Q1) and drive circuit (101), and the input of described drive circuit (101) connects the signal input end of described switch module (100) to receive described control signal (Vpulse) and to export the isolation drive signal based on described control signal (Vpulse); The output that the grid of described switching tube (Q1) connects described drive circuit (101) is to receive described isolation drive signal and based on described isolation drive signal conduction or shutoff, the source ground of described switching tube (Q1), drain electrode connect second input of the former limit winding of described transformer (T1).
4. numerical control LLC series resonance translation circuit according to claim 3 is isolated sampling apparatus, it is characterized in that described switching tube (Q1) is mos field effect transistor or insulated gate bipolar transistor; Described drive circuit (101) is an isolated drive circuit.
5. numerical control LLC series resonance translation circuit according to claim 1 is isolated sampling apparatus, it is characterized in that, described digital signal processor (20) comprises the analog-to-digital conversion module (21) that is used for described isolation sampled signal (Vsample) is converted to digital signal, be used to generate the control signal generation module (22) of described control signal (Vpulse) and be used to regulate described control signal (Vpulse) and described analog-to-digital conversion module (21) so that described analog-to-digital conversion module (21) accurately obtain the adjustment module (23) of described isolation sampled signal (Vsample).
6. numerical control LLC series resonance translation circuit according to claim 1 is isolated sampling apparatus, it is characterized in that, further comprise being used to handle described isolation sampled signal (Vsample) to generate the secondary signal processing module (200) of effective isolation sampled signal (V ' sample); The first input end of described secondary signal processing module (200) connects secondary first output of described transformer (T1), secondary second output that second input of described secondary signal processing module (200) connects described transformer (T1) to be receiving described isolation sampled signal (Vsample), and the signal input part (ADC) that the sampled signal output of described secondary signal processing module (200) connects described digital signal processor (20) is to export effective isolation sampled signal (V ' sample).
7. numerical control LLC series resonance translation circuit according to claim 3 is isolated sampling apparatus, it is characterized in that, further comprise the first magnetic reset circuit (300) between second input of former limit winding of the first input end of the former limit winding that is arranged on described transformer (T1) and described transformer (T1).
8. numerical control LLC series resonance translation circuit according to claim 3 is isolated sampling apparatus, it is characterized in that, further comprise the second magnetic reset circuit (400) between second end of first end that is arranged on described switch module (100) and described switch module (100).
9. numerical control LLC series resonance translation circuit according to claim 6 is isolated sampling apparatus, it is characterized in that described secondary signal processing module (200) comprises that secondary second output that is connected to described transformer (T1) is to receive and to handle the transformation of scale unit (201) of described isolation sampled signal (Vsample), secondary second output that is connected to described transformer (T1) is to be used for receiving and handling described isolation sampled signal (Vsample) proportional integral converter unit (202), secondary second output that is connected to described transformer (T1) is to be used for receiving and handling described isolation sampled signal (Vsample) proportion integration differentiation converter unit, secondary second output that is connected to described transformer (T1) be used for receiving and the filter unit (204) of the described isolation sampled signal of filtering (Vsample) or secondary second output that is connected to described transformer (T1) with the clamp units (205) of the voltage that is used for the described isolation sampled signal of clamper (Vsample).
10. isolate sampling apparatus according to the described numerical control LLC of arbitrary claim series resonance translation circuit among the claim 1-9, it is characterized in that described numerical control LLC series resonance translation circuit is full-bridge or half-bridge LLC series resonance translation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010165256.XA CN102214998B (en) | 2010-04-07 | 2010-04-07 | Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010165256.XA CN102214998B (en) | 2010-04-07 | 2010-04-07 | Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102214998A true CN102214998A (en) | 2011-10-12 |
| CN102214998B CN102214998B (en) | 2014-01-29 |
Family
ID=44746160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010165256.XA Active CN102214998B (en) | 2010-04-07 | 2010-04-07 | Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102214998B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683974A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | All-digital control high-power alternating-current and direct-current converter |
| CN106100337A (en) * | 2016-01-31 | 2016-11-09 | 深圳麦格米特电气股份有限公司 | A kind of control method of flyback high tension generator pulse width |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091462U (en) * | 1991-05-05 | 1991-12-25 | 中国矿业大学 | Portable harmonic wave analyzer |
| US5832076A (en) * | 1996-08-07 | 1998-11-03 | Transcrypt International, Inc. | Apparatus and method for determining the presence and polarity of direct current bias voltage for microphones in telephone sets |
| CN1728551A (en) * | 2005-07-08 | 2006-02-01 | 浙江大学 | Controller capable of adjusting and controlling width of pulse |
| CN201063539Y (en) * | 2007-04-27 | 2008-05-21 | 深圳市麦格米特电气技术有限公司 | LLC series resonance converter protection circuit |
| CN101207333A (en) * | 2006-12-21 | 2008-06-25 | 辉芒微电子（深圳）有限公司 | Switch power supply and control method with awaiting orders mode thereof |
| CN201303455Y (en) * | 2008-10-28 | 2009-09-02 | 何宇峰 | Digital high-voltage sodium lamp electronic ballast |
-
2010
- 2010-04-07 CN CN201010165256.XA patent/CN102214998B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091462U (en) * | 1991-05-05 | 1991-12-25 | 中国矿业大学 | Portable harmonic wave analyzer |
| US5832076A (en) * | 1996-08-07 | 1998-11-03 | Transcrypt International, Inc. | Apparatus and method for determining the presence and polarity of direct current bias voltage for microphones in telephone sets |
| CN1728551A (en) * | 2005-07-08 | 2006-02-01 | 浙江大学 | Controller capable of adjusting and controlling width of pulse |
| CN101207333A (en) * | 2006-12-21 | 2008-06-25 | 辉芒微电子（深圳）有限公司 | Switch power supply and control method with awaiting orders mode thereof |
| CN201063539Y (en) * | 2007-04-27 | 2008-05-21 | 深圳市麦格米特电气技术有限公司 | LLC series resonance converter protection circuit |
| CN201303455Y (en) * | 2008-10-28 | 2009-09-02 | 何宇峰 | Digital high-voltage sodium lamp electronic ballast |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683974A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | All-digital control high-power alternating-current and direct-current converter |
| CN106100337A (en) * | 2016-01-31 | 2016-11-09 | 深圳麦格米特电气股份有限公司 | A kind of control method of flyback high tension generator pulse width |
| CN106100337B (en) * | 2016-01-31 | 2019-07-05 | 深圳麦格米特电气股份有限公司 | A kind of control method of flyback high pressure generator pulse width |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102214998B (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101951716B (en) | Constant-on-time primary side constant-current control device for LED driver with high power factor | |
| CN201805600U (en) | Primary-side constant-current control device of LED driver | |
| CN103023335B (en) | LLC (logical link control) converter synchronous rectification method and device | |
| CN104320001B (en) | A kind of magnetic isolation feedback circuit | |
| CN110661427B (en) | Digital control device based on gallium nitride device active clamping flyback AC-DC converter | |
| CN103716965A (en) | LED driving device and control circuit and output current detection circuit thereof | |
| CN103813591B (en) | The CRM Flyback LED driver of low output current peak-to-average force ratio | |
| CN108347187B (en) | Portable traveling wave tube test power supply | |
| CN103944402A (en) | Control method of excited push-pull converter with zero-voltage switching and excited push-pull converter | |
| CN113726165B (en) | Flyback converter and control method thereof | |
| CN106487259B (en) | A kind of neutral point voltage balance method for three Level Full Bridge DC converters | |
| CN103326579B (en) | Magnetic isolation feedback circuit | |
| CN100589913C (en) | High-frequency inversion arc-welding power supply main power system | |
| CN105471231B (en) | A kind of Flyback ac-dc converter circuit and inverse-excitation type electric pressure converter | |
| CN102214998B (en) | Isolated sampling device for numerical-control LLC (logical link control) series resonance transformation circuit | |
| CN110504832A (en) | Control circuit and method for high pressure BUCK switch converters | |
| CN110579639B (en) | Mains supply zero-crossing detection circuit and switch power supply system using same | |
| CN201328102Y (en) | Secondary-side control device of transformer | |
| CN105471291B (en) | A kind of inverse-excitation type AC-DC voltage conversion circuits and inverse-excitation type electric pressure converter | |
| CN102103157B (en) | Direct voltage isolated sampling device | |
| CN201742299U (en) | Current mode multiple-output DC-DC switching power supply for secondary current sampling | |
| CN205356129U (en) | Flyback ac - DC converter circuit and sharp formula voltage converter that turns over | |
| Xie et al. | A novel high frequency current-driven synchronous rectifier for low voltage high current applications | |
| CN102103155B (en) | Numerical control isolation sampling device | |
| CN106160485A (en) | Insulating power supply and output feedback method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee after: Walteff energy systems company Address before: The United States of Ohio city F Lorain Street No. 1122 Patentee before: Emerson Network Power Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211223 Address after: Ohio, USA Patentee after: Dimension Corp. Address before: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee before: VERTIV ENERGY SYSTEMS, Inc. |
|
| TR01 | Transfer of patent right |