CN109149950A - A kind of high-precision integrative high-frequency and high-voltage power supply - Google Patents
A kind of high-precision integrative high-frequency and high-voltage power supply Download PDFInfo
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- CN109149950A CN109149950A CN201811293990.7A CN201811293990A CN109149950A CN 109149950 A CN109149950 A CN 109149950A CN 201811293990 A CN201811293990 A CN 201811293990A CN 109149950 A CN109149950 A CN 109149950A
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims description 19
- 238000013519 translation Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
- H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of high-precision integrative high-frequency and high-voltage power supply, including full-bridge inverting unit, step-up transformer and more voltage multiplying rectifier devices；It further include the drive control unit for being driven to full-bridge inverting unit；The drive control unit includes PWM drive circuit, voltage control circuit and current control circuit；Using the design of full analog circuit, and the output of PWM is controlled simultaneously using current control and voltage control, fast response time, it is high to control precision, the control output signal of sampled signal and current or voltage for input is effectively treated, the precision of the power supply further improved, simultaneously, using more voltage multiplying rectifier devices of whole design, installation and heat dissipation rational deployment, conducive to the integrated mounting structure for the high-frequency and high-voltage power supply for forming voltage levels.
Description
Technical field
The present invention relates to high-frequency and high-voltage power supply technical field, in particular to a kind of high-precision integrative high-frequency and high-voltage power supply.
Background technique
Direct current high-frequency and high-voltage power supply is mainly used in the equipment such as electric precipitation, detecting instrument, in the prior art, high-frequency and high-voltage
Power supply generally uses full-bridge inverting, step-up transformer and voltage multiplying rectifier to realize, wherein the output frequency of power supply is by PWM
Driving plate drives full bridge inverter to realize.
1) circuit design of existing most PWM driving plate has been all made of digital technology or intelligent chip technology, this
The design low-response of kind circuit can not achieve high-precision triggering effect；
2) single feedback function of the general only current or voltage of existing PWM driving, control precision be not also high；
3) it in the processing of voltage or the acquisition signal of electric current, without high-precision signal processing circuit, is controlled in voltage
In the output processing of signal or current controling signal, it is not directed to high-precision signal output processing circuit yet.
The overall accuracy that above-mentioned defect causes existing direct current high-frequency and high-voltage power supply is not high, system response speed is slow.
4) existing high voltage power supply does not allow short circuit and open circuit generally, and short-circuit impact is easy overcurrent damage, easy over-voltage of opening a way
It burns；
5) existing product is generally unable to output voltage electric current from 0 Serial regulation.
In addition, existing voltage multiplying rectifier device also none reasonable integral heat sink structure type.
Summary of the invention
In order to solve the problems, such as described in background technique, the present invention provides a kind of high-precision integrative high-frequency and high-voltage power supply, adopts
With the design of full analog circuit, and is controlled using current control and voltage and the output of PWM is controlled simultaneously, response speed
Fastly, control precision is high, and the control output signal of sampled signal and current or voltage for input is effectively treated, more
The precision of the power supply further increased, meanwhile, using more voltage multiplying rectifier devices of whole design, installation and heat dissipation rational deployment,
Conducive to the integrated mounting structure for the high-frequency and high-voltage power supply for forming voltage levels.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of high-precision integrative high-frequency and high-voltage power supply, including successively by low-voltage direct input terminal to high frequency high-voltage output end
Full-bridge inverting unit, step-up transformer and the more voltage multiplying rectifier devices of connection；It further include for being driven to full-bridge inverting unit
Dynamic drive control unit；The drive control unit includes PWM drive circuit.
The PWM drive circuit includes PWM controller, two-way high speed MOSTET driver and the first driving transformer
OT1 and the second driving transformer OT2, PWM controller input terminal receive from voltage control circuit and current control circuit
Pulse width adjustment signal IC, output end export two-way and trigger driving signal, pass through two-way high speed MOSTET driver output two
Road driving signal, via exporting four tunnel driving signals to complete after driving the first driving transformer OT1 and the second driving transformer OT2
Bridge inversion unit.
The drive control unit further includes the voltage control circuit being connected with PWM drive circuit and current control electricity
Road；The input terminal of the voltage control circuit and current control circuit respectively with the voltage acquisition end of more voltage multiplying rectifier devices and
Current acquisition end is connected, the common output pulse width adjustment signal IC of output end to PWM drive circuit.
The voltage control circuit includes the first current/voltage translation circuit, the first signal tracking circuit, first voltage
Polarity selecting circuit, first instrument signal output isolation circuit and the first comparison circuit；Voltage from voltage acquisition end is adopted
Sample signal successively after the first current/voltage translation circuit, the first signal tracking circuit and first voltage polarity selecting circuit,
It exports all the way through first instrument signal output isolation circuit to voltage monitoring instrument, another way exports arteries and veins by the first comparison circuit
Rush width adjustment signal IC.
The current control circuit includes the second current/voltage translation circuit, second signal tracking circuit, second voltage
Polarity selecting circuit, second instrument signal output isolation circuit and the second comparison circuit；Electric current from current acquisition end is adopted
Sample signal successively by the second current/voltage translation circuit, second signal tracking circuit and second voltage polarity selecting circuit after,
It exports all the way through second instrument signal output isolation circuit to current monitoring instrument, another way exports arteries and veins by the second comparison circuit
Rush width adjustment signal IC.
The two-way IC signal of the voltage control circuit and current control circuit, which signal level drag down, i.e., by
Which is controlled, and two paths of signals level drags down simultaneously, then two-way controls simultaneously.
In the voltage control circuit, the first signal tracking circuit also exports current correcting signal mA_Comp, institute simultaneously
The current correcting signal mA_Comp stated is connected to the input terminal of the second signal tracking circuit of the current control circuit.
The output port of the PWM controller of the PWM drive circuit also exports the SLOPE for limiting slope change rate
Signal, SLOPE signal are respectively connected to the input terminal of current control circuit and voltage control circuit.
In the voltage control circuit, voltage acquisition signal is successively through the first current/voltage translation circuit, the first signal
Tracking circuit, the input terminal that the first comparison circuit is accessed after first voltage polarity selecting circuit, the first comparison circuit it is another
One input terminal SLOPE signal of the connection from PWM drive circuit and the voltage setting signal Prog_kV from potentiometer.
In the current control circuit, current acquisition signal is successively through the second current/voltage translation circuit, second signal
Tracking circuit, the input terminal that the second comparison circuit is accessed after second voltage polarity selecting circuit, the second comparison circuit it is another
One input terminal SLOPE signal of the connection from PWM drive circuit and the electric current setting signal Prog_mA from potentiometer.
In the voltage control circuit, first voltage polarity selecting circuit includes first voltage polarity selection wire jumper and the
One phase inverter is connected the positive terminal of first voltage polarity selection wire jumper by the signal that the first signal tracking circuit exports, separately all the way
The negative pole end for connecting first voltage polarity selection wire jumper after the first phase inverter all the way is led to by first voltage polarity selection wire jumper
Cross wire jumper selection output cathode end or negative pole end.
In the current control circuit, second voltage polarity selecting circuit includes second voltage polarity selection wire jumper and the
Two phase inverters are connected the positive terminal of second voltage polarity selection wire jumper by the signal of second signal tracking circuit output, separately all the way
The negative pole end for connecting second voltage polarity selection wire jumper after the second phase inverter all the way is led to by second voltage polarity selection wire jumper
Cross wire jumper selection output cathode end or negative pole end.
More voltage multiplying rectifier devices include more voltage doubling rectifing circuits and its output end is sequentially connected in series by the first electric discharge
First discharge circuit of pipe GT1 composition is exported by current-limiting resistance RL1-RLn and sample resistance the R1-Rn current limliting constituted and sampling
Circuit, the feed circuit being made of feedback resistance Rf1-Rfn, the current limliting and the both ends for sampling output circuit are also parallel with the
The second discharge circuit that two discharge tube GT2 are constituted, the lower end of the first discharge circuit are also grounded via filter capacitor C1-Cn.
More voltage multiplying rectifier devices include the first layer pcb board being sequentially arranged from top to bottom, second layer pcb board,
Three layers of pcb board, the 4th layer of pcb board, layer 5 pcb board and layer 6 pcb board, further include preceding sealing plate and rear sealing plate, before described
Sealing plate and rear sealing plate are connected in first layer pcb board, second layer pcb board, third layer pcb board, the 4th layer of pcb board, layer 5 pcb board
With the both ends of layer 6 pcb board, heat dissipation gap is reserved between each layer pcb board；
The upper end of the first layer pcb board and the lower end of layer 6 pcb board are mounted on multiple diodes, and described
The lower end of two layers of pcb board and the upper end of layer 5 pcb board are mounted on multiple capacitors, the lower end of the third layer pcb board and
The upper end of 4th layer of pcb board is mounted on current-limiting resistance and sample resistance.
Multiple diodes and the electrical connection of multiple capacitors are at voltage doubling rectifing circuit, the current-limiting resistance and sampling
Resistance is connected on the input terminal of voltage doubling rectifing circuit.
Compared with prior art, the beneficial effects of the present invention are:
1, using the design of full analog circuit, fast response time；
Which 2, the output of PWM is controlled simultaneously using current control and voltage control, two-way IC signal, signal
Level drags down, i.e., is controlled by which, and two paths of signals level drags down simultaneously, then two-way controls simultaneously, and control precision is high；
3, it in the processing of the sampled signal of voltage and current, is acted on simultaneously using a variety of calibrating modes, ensure that sampling
The accuracy of signal reaches the high-precision effect of power supply；
4, control signal output processing on, if supply instrument output signal directly export, can in instrument
Portion's circuit constitutes circuit, influences the accuracy into the signal of comparison circuit, the output with instrument spacing output circuit to instrument
Signal carries out isolation processing and solves this problem in that；
5, PWM drive circuit feeds back to the SLOPE signal of voltage control circuit and current control circuit, can limit given
The slope maximum value and minimum value of signal carry out voltage-limiting protection to signal, prevent voltage overshoot and improve response speed；
6, the utilization of the first discharge circuit and the second discharge circuit, when can prevent HVout output terminal shortcircuit or open circuit, Rf
Missampling, the first discharge circuit can prevent short-circuit impact, while the use of filter capacitor can substantially reduce ripple factor
Make VAC<5VP；
7, using more voltage multiplying rectifier devices of whole design, installation and heat dissipation rational deployment, conducive to voltage levels are formed
High-frequency and high-voltage power supply integrated mounting structure.
Detailed description of the invention
Fig. 1 is circuit structure block diagram of the invention；
Fig. 2 is voltage control circuit structural block diagram of the invention；
Fig. 3 is current control circuit structural block diagram of the invention；
Fig. 4 is PWM drive circuit structural block diagram of the invention；
Fig. 5 is that voltage control circuit of the invention specifically designs circuit diagram；
Fig. 6 is that current control circuit of the invention specifically designs circuit diagram；
Fig. 7 is the PWM controller circuit diagram of PWM drive circuit plate of the invention；
Fig. 8 is the high speed MOSTET drive circuit figure of PWM drive circuit plate of the invention；
Fig. 9 is full-bridge inverting element circuit figure of the invention；
Figure 10 is step-up transformer and more voltage multiplying rectifier device circuit figures of the invention；
Figure 11 is the circuit structure diagram of more voltage multiplying rectifier devices of the invention；
Figure 12 is the layered stereoscopic structure chart of more voltage multiplying rectifier devices of the invention；
Figure 13 is the main view of more voltage multiplying rectifier devices；
Figure 14 is the structural perspective of more voltage multiplying rectifier devices.
Wherein: the more voltage multiplying rectifier device 4- drive control unit 5-PWM of 1- full-bridge inverting unit 2- step-up transformer 3-
Driving circuit 6- current control circuit 7- voltage control circuit 8- the first current/voltage translation circuit the first signal trace of 9-
Circuit 10- first voltage polarity selects the first phase inverter of wire jumper 11- 12- first instrument signal output isolation circuit 13- the
One comparison circuit 14- the second current/voltage translation circuit 15- potentiometer 2W3 16- second signal tracks circuit 17- second
Polarity of voltage selects the second phase inverter of wire jumper 18- 19- second instrument signal output isolation circuit the second comparison circuit of 20- 21-
The 4th layer of pcb board 25- layer 5 pcb board 26- of first layer pcb board 22- second layer pcb board 23- third layer pcb board 24-
Sealing plate 29- diode 30- capacitor 31- sample resistance 32- current-limiting resistance 33- branch after sealing plate 28- before six layers of pcb board 27-
Support stud 34- cable outlet hole 35- cable.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of high-precision integrative high-frequency and high-voltage power supply, including by low-voltage direct input terminal to high-frequency and high-voltage
The sequentially connected full-bridge inverting unit 1 of output end, step-up transformer 2 and more voltage multiplying rectifier devices 3；It further include for inverse to full-bridge
Become the drive control unit 4 that unit is driven；The drive control unit 4 includes PWM drive circuit 5.
The drive control unit 4 further includes the voltage control circuit 6 being connected with PWM drive circuit 5 and electric current control
Circuit 7 processed；The input terminal of the voltage control circuit 6 and current control circuit 7 voltage with more voltage multiplying rectifier devices 3 respectively
Collection terminal is connected with current acquisition end, the common output pulse width adjustment signal IC of output end to PWM drive circuit 5.
As shown in Fig. 2, the voltage control circuit 6 includes the first current/voltage translation circuit 8, the first signal trace
Circuit 9, first voltage polarity selecting circuit, first instrument signal output isolation circuit 12 and the first comparison circuit 13；First electricity
Pressure polarity selecting circuit includes that first voltage polarity selects wire jumper 10 and the first phase inverter 11, defeated by the first signal tracking circuit 9
Signal out connects the positive terminal of first voltage polarity selection wire jumper 10 all the way, and another way connects the after the first phase inverter 11
One polarity of voltage select wire jumper 10 negative pole end, by first voltage polarity selection wire jumper 10 by wire jumper selection output cathode end or
Negative pole end.Voltage sampling signal from voltage acquisition end successively passes through the first current/voltage translation circuit 8, the first signal
It is exported all the way through first instrument signal output isolation circuit 12 to voltage prison after tracking circuit 9 and first voltage polarity selecting circuit
Instrument is surveyed, another way passes through 13 output pulse width adjustment signal IC of the first comparison circuit.
As shown in figure 3, the current control circuit 7 includes the second current/voltage translation circuit 14, second signal tracking
Circuit 16, second voltage polarity selecting circuit, second instrument signal output isolation circuit 19 and the second comparison circuit 20；Second electricity
Pressure polarity selecting circuit includes second voltage polarity selection wire jumper 17 and the second phase inverter 18, and it is defeated to track circuit 16 by second signal
Signal out connects the positive terminal of second voltage polarity selection wire jumper 17 all the way, and another way connects the after the second phase inverter 18
Two polarity of voltages select wire jumper 17 negative pole end, by second voltage polarity selection wire jumper 17 by wire jumper selection output cathode end or
Negative pole end.Current sampling signal from current acquisition end successively passes through the second current/voltage translation circuit 14, second signal
After tracking circuit 16 and second voltage polarity selecting circuit, export all the way through second instrument signal output isolation circuit 19 to electric current
Measuring instrument, another way pass through 20 output pulse width adjustment signal IC of the second comparison circuit.
As shown in figure 4, the PWM drive circuit 5 includes PWM controller, two-way high speed MOSTET driver and first
Driving transformer OT1 and the second driving transformer OT2, PWM controller input terminal are received by voltage control circuit 6 and current control
Circuit 7 and come pulse width adjustment signal IC, output end export two-way trigger driving signal, pass through two-way high speed MOSTET drive
Dynamic device exports two-way driving signal, drives via four tunnels are exported after driving the first driving transformer OT1 and the second driving transformer OT2
Signal is moved to full-bridge inverting unit.
As shown in Figs 1-4, the output port of the PWM controller of the PWM drive circuit 5 is also exported for limiting slope
The SLOPE signal of change rate, SLOPE signal are respectively connected to the input terminal of current control circuit 7 and voltage control circuit 6.
As shown in Fig. 2, voltage acquisition signal successively converts electricity through the first current/voltage in the voltage control circuit 6
An input terminal of the first comparison circuit 13 is accessed after road 8, the first signal tracking circuit 9, first voltage polarity selecting circuit, the
Another input terminal SLOPE signal of the connection from PWM drive circuit 5 of one comparison circuit 13 and the voltage from potentiometer are set
Determine signal Prog_kV.
As shown in figure 3, current acquisition signal successively converts electricity through the second current/voltage in the current control circuit 7
An input terminal of the second comparison circuit 20 is accessed after road 14, second signal tracking circuit 16, second voltage polarity selecting circuit,
Another input terminal of second comparison circuit 20 connects SLOPE signal from PWM drive circuit 5 and from the electric current of potentiometer
Setting signal Prog_mA.
As Figure 2-3, in the voltage control circuit 6, the first signal tracking circuit 9 is gone back while exporting current correction
Signal mA_Comp, the current correcting signal mA_Comp are connected to the second signal tracking of the current control circuit 7
The input terminal of circuit 16.
As shown in figure 5, in figure, chip IC 2 is four road transports for the specific implementation circuit diagram of the voltage control circuit 6
Calculate amplifier LT1014, wherein 1-3 pin, 5-7 pin, 8-10 pin, 12-14 pin are respectively amplifier all the way, according to pin
Connection relationship is different, respectively constitutes signal tracking circuit, phase inverter, signal isolation circuit and comparator, the first electricity in Fig. 2
Stream/voltage conversion circuit 8 is connected and composed by resistance 1R1, resistance 1R2 and potentiometer 1W1, and the signal of the current forms of acquisition is turned
Become voltage signal form, the first signal tracking circuit 9 by resistance 1R4, potentiometer 1W2 and LT1014 (IC2) the first road transport
Put the signal tracking circuit of composition, wherein potentiometer 1W2 can also be adjusted according to the measured value of sampling monitoring point TP2, make to adopt
The signal value of sample end signal value and control circuit is consistent, and first voltage polarity selecting circuit includes polarity selection 10 He of wire jumper
First phase inverter 11, phase inverter are made of second group of amplifier of IC2, and first instrument signal output isolation circuit 12 is by the of IC2
Four groups of amplifiers are constituted, and sampled signal after processing needs to be divided into two-way, all the way for carrying out the monitoring of instrument, another way supply
Comparator is compared output with setting value, can be with the internal circuit of instrument if the output signal of supply instrument directly exports
Circuit is constituted, the accuracy into the signal of comparison circuit is influenced, to keep the control signal of output inaccurate, the present invention is in instrument
The isolation circuit that output signal is increased at output signal, solves this problem in that.First comparison circuit 13 is the third group by IC2
The comparison circuit that amplifier is constituted, the signal come from JUMP1 are directly given to IC2 in first instrument output isolation circuit 12 all the way
No. 12 pins, another way are given to No. 9 pins of IC2 in the first comparison circuit 13 through resistance 1R13, and one as comparator is defeated
Enter end, another input terminal (No. 10 pins of IC2) of comparator is SLOPE, Prog_kV two from external terminal U1-C
Road signal collectively forms, and output end (No. 8 pins of IC2) the output pwm control signal IC of comparator is connected on terminal U1-C.
As shown in fig. 6, be the current control circuit 7 specific implementation circuit diagram, the current control circuit 7 of Fig. 6 with
The voltage control circuit 6 of Fig. 5 is essentially identical, and introduction is not repeated herein, and only just different two o'clocks is illustrated, (1) electric current/electricity
The resistance of volt circuit is different with potentiometer parameter selection, sees Fig. 5 and Fig. 6, since the sampled signal of electric current and the sampling of voltage are believed
Number signal parameter it is different, so resistance 2R1, resistance 2R2 and the potentiometer 2W1 of the second current/voltage translation circuit 14 of Fig. 6
Resistance parameter selection it is different from Fig. 5.(2) signal value of the first signal tracking circuit 9 output of Fig. 5 is simultaneously as electricity
The correction signal mA_Comp of stream sampled signal processing is accessed by external terminal U2-4 by resistance 2R15 and potentiometer 2W3 15
Second signal tracks in No. 2 input pin of IC3 of circuit 16, the correction for handling current sampling signal.
As shown in fig. 7, SG3525 circuit has been public for the circuit diagram of PWM controller SG3525 in PWM drive circuit 5
The technology opened, is not described in detail here, and only input and output signal is described, and in figure, the signal of input is by terminal
U3-C and the IC signal come, access No. 1 pin of SG3525, IC signal by voltage control circuit 6 and current control circuit 7 simultaneously
Access, which signal level are dragged down, i.e., are controlled by which, and two paths of signals level drags down simultaneously, then the same time control of two-way
System, control precision are high.The output signal of SG3525 is A the and B trigger signal exported by 11 and No. 14 pins, while SG3525
No. 8 pins also export slope of the SLOPE signal to voltage control circuit 6 and current control circuit 7 for signal all the way and limit.
Fig. 8 be PWM drive circuit 5 two-way high speed MOSTET driver TC4420 implementing circuit figure, connection relationship with
Fig. 4 is identical, and description is not repeated herein.
Fig. 9 is the full bridge inverter figure of conventional four tunnels driving, by tetra- tunnel driving signal G1-S1, G2-S2 of Fig. 8 Zhong,
G3-S3, G4-S4 drive the full bridge inverter 1 being made of four IRF640, the output terminals A B of full bridge inverter 1
It is low-voltage direct output end with CD.
Figure 10 is that the power end AB and CD exported by full bridge inverter 1 has been sequentially connected step-up transformer 2 and times repoussage
Current circuit 3, final output high-frequency and high-voltage power supply.
As shown in figure 11, the present invention has been sequentially connected in series in the output end of more voltage doubling rectifing circuits by the first discharge tube GT1 structure
At the first discharge circuit, by current-limiting resistance RL1-RLn and sample resistance the R1-Rn current limliting constituted and sampling output circuit, by
The feed circuit that feedback resistance Rf1-Rfn is constituted, the current limliting and the both ends for sampling output circuit are also parallel with the second electric discharge
The second discharge circuit that pipe GT2 is constituted, the lower end of the first discharge circuit are also grounded via filter capacitor C1-Cn.The of this circuit
The utilization of one discharge circuit and the second discharge circuit, when can prevent HVout output terminal shortcircuit or open circuit, Rf missampling, the
One discharge circuit can prevent short-circuit impact, while the use of filter capacitor can substantially reduce ripple factor makes VAC<5VP。
As shown in figs. 12-14, more voltage multiplying rectifier devices 3, including the first layer pcb board being sequentially arranged from top to bottom
21, second layer pcb board 22, third layer pcb board 23, the 4th layer of pcb board 24, layer 5 pcb board 25 and layer 6 pcb board 26, also
Including preceding sealing plate 27 and rear sealing plate 28, the preceding sealing plate 27 and rear sealing plate 28 are connected in first layer pcb board 21, second layer PCB
The both ends of plate 22, third layer pcb board 23, the 4th layer of pcb board 24, layer 5 pcb board 25 and layer 6 pcb board 26, each layer pcb board
Between reserve heat dissipation gap.
The upper end of the first layer pcb board 21 and the lower end of layer 6 pcb board 26 are mounted on multiple diodes 29, institute
The lower end for the second layer pcb board 22 stated and the upper end of layer 5 pcb board 25 are mounted on multiple capacitors 30, the third layer
The lower end of pcb board 23 and the upper end of the 4th layer of pcb board 24 are mounted on current-limiting resistance 32 and sample resistance 31.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (9)
1. a kind of high-precision integrative high-frequency and high-voltage power supply, including successively connected by low-voltage direct input terminal to high frequency high-voltage output end
Full-bridge inverting unit, step-up transformer and the more voltage multiplying rectifier devices connect；It further include for being driven to full-bridge inverting unit
Drive control unit；The drive control unit includes PWM drive circuit；
The PWM drive circuit include PWM controller, two-way high speed MOSTET driver and the first driving transformer OT1 with
Second driving transformer OT2, the pulse that PWM controller input terminal receives from voltage control circuit and current control circuit are wide
Adjustment signal IC is spent, output end exports two-way and triggers driving signal, exports two-way driving by two-way high speed MOSTET driver
Signal, via driving the first driving transformer OT1 and the second driving transformer OT2 after export four tunnel driving signals to full-bridge inverting
Unit；
It is characterized in that, the drive control unit further includes the voltage control circuit and electricity being connected with PWM drive circuit
Flow control circuit；The input terminal of the voltage control circuit and current control circuit voltage with more voltage multiplying rectifier devices respectively
Collection terminal is connected with current acquisition end, the common output pulse width adjustment signal IC of output end to PWM drive circuit；
The voltage control circuit includes the first current/voltage translation circuit, the first signal tracking circuit, first voltage polarity
Selection circuit, first instrument signal output isolation circuit and the first comparison circuit；Voltage sample letter from voltage acquisition end
Number successively after the first current/voltage translation circuit, the first signal tracking circuit and first voltage polarity selecting circuit, all the way
It exports through first instrument signal output isolation circuit to voltage monitoring instrument, another way is wide by the output pulse of the first comparison circuit
Spend adjustment signal IC；
The current control circuit includes the second current/voltage translation circuit, second signal tracking circuit, second voltage polarity
Selection circuit, second instrument signal output isolation circuit and the second comparison circuit；Current sample letter from current acquisition end
Number successively after the second current/voltage translation circuit, second signal tracking circuit and second voltage polarity selecting circuit, all the way
It exports through second instrument signal output isolation circuit to current monitoring instrument, another way is wide by the output pulse of the second comparison circuit
Spend adjustment signal IC；
The two-way IC signal of the voltage control circuit and current control circuit, which signal level drags down, i.e., by which
Road is controlled, and two paths of signals level drags down simultaneously, then two-way controls simultaneously；
In the voltage control circuit, the first signal tracking circuit also exports current correcting signal mA_Comp simultaneously, described
Current correcting signal mA_Comp is connected to the input terminal of the second signal tracking circuit of the current control circuit.
2. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1, which is characterized in that the PWM drives
The output port of the PWM controller of dynamic circuit also exports the SLOPE signal for limiting slope change rate, SLOPE signal difference
It is connected to the input terminal of current control circuit and voltage control circuit.
3. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1 or 2, which is characterized in that the electricity
It presses in control circuit, voltage acquisition signal is successively through the first current/voltage translation circuit, the first signal tracking circuit, the first electricity
An input terminal of the first comparison circuit is accessed after pressure polarity selecting circuit, another input terminal connection of the first comparison circuit comes
From the SLOPE signal of PWM drive circuit and the voltage setting signal Prog_kV from potentiometer.
4. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1 or 2, which is characterized in that the electricity
In flow control circuit, current acquisition signal is successively through the second current/voltage translation circuit, second signal tracking circuit, the second electricity
An input terminal of the second comparison circuit is accessed after pressure polarity selecting circuit, another input terminal connection of the second comparison circuit comes
Electric current setting signal Prog_mA from the SLOPE signal of PWM drive circuit and from potentiometer.
5. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1, which is characterized in that the voltage control
In circuit processed, first voltage polarity selecting circuit includes first voltage polarity selection wire jumper and the first phase inverter, by the first signal
The signal of tracking circuit output connects the positive terminal of first voltage polarity selection wire jumper all the way, and another way is after the first phase inverter
The negative pole end for connecting first voltage polarity selection wire jumper selects wire jumper to select output cathode end by wire jumper by first voltage polarity
Or negative pole end.
6. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1, which is characterized in that the electric current control
In circuit processed, second voltage polarity selecting circuit includes second voltage polarity selection wire jumper and the second phase inverter, by second signal
The signal of tracking circuit output connects the positive terminal of second voltage polarity selection wire jumper all the way, and another way is after the second phase inverter
The negative pole end for connecting second voltage polarity selection wire jumper selects wire jumper to select output cathode end by wire jumper by second voltage polarity
Or negative pole end.
7. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1, which is characterized in that more multiplication of voltages
Fairing includes more voltage doubling rectifing circuits and its first electric discharge electricity being made of the first discharge tube GT1 that output end is sequentially connected in series
Road, by current-limiting resistance RL1-RLn and sample resistance the R1-Rn current limliting constituted and sampling output circuit, by feedback resistance Rf1-Rfn
The feed circuit of composition, the current limliting and the both ends for sampling output circuit are also parallel with the be made of the second discharge tube GT2
Two discharge circuits, the lower end of the first discharge circuit are also grounded via filter capacitor C1-Cn.
8. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 1, which is characterized in that more multiplication of voltages
Fairing includes the first layer pcb board being sequentially arranged from top to bottom, second layer pcb board, third layer pcb board, the 4th layer of PCB
Plate, layer 5 pcb board and layer 6 pcb board, further include preceding sealing plate and rear sealing plate, and the preceding sealing plate and rear sealing plate are connected in the
The both ends of one layer of pcb board, second layer pcb board, third layer pcb board, the 4th layer of pcb board, layer 5 pcb board and layer 6 pcb board,
Heat dissipation gap is reserved between each layer pcb board；
The upper end of the first layer pcb board and the lower end of layer 6 pcb board are mounted on multiple diodes, the second layer
The lower end of pcb board and the upper end of layer 5 pcb board are mounted on multiple capacitors, the lower end and the 4th of the third layer pcb board
The upper end of layer pcb board is mounted on current-limiting resistance and sample resistance.
9. a kind of high-precision integrative high-frequency and high-voltage power supply according to claim 8, which is characterized in that described multiple two
Pole pipe and the electrical connection of multiple capacitors are at voltage doubling rectifing circuit.
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| CN201811293990.7A CN109149950B (en) | 2018-11-01 | 2018-11-01 | High-precision integrated high-frequency high-voltage power supply |
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| CN201811293990.7A CN109149950B (en) | 2018-11-01 | 2018-11-01 | High-precision integrated high-frequency high-voltage power supply |
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| CN109149950B CN109149950B (en) | 2024-02-06 |
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| CN113485507A (en) * | 2021-07-07 | 2021-10-08 | 深圳东昇射频技术有限公司 | High-precision anti-noise multiplication control voltage-to-current method |
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| CN109149950B (en) | 2024-02-06 |
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