CN209030097U - A kind of direct current high-frequency and high-voltage power supply - Google Patents
A kind of direct current high-frequency and high-voltage power supply Download PDFInfo
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- CN209030097U CN209030097U CN201821791611.2U CN201821791611U CN209030097U CN 209030097 U CN209030097 U CN 209030097U CN 201821791611 U CN201821791611 U CN 201821791611U CN 209030097 U CN209030097 U CN 209030097U
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Abstract
The utility model provides a kind of direct current high-frequency and high-voltage power supply, including by low-voltage direct input terminal to the sequentially connected full-bridge inverting unit of high frequency high-voltage output end, step-up transformer and more voltage doubling rectifing circuits；It further include the drive control unit for being driven to full-bridge inverting unit；The drive control unit includes PWM drive circuit plate, further includes the current control circuit plate and voltage control circuit plate being connected with PWM drive circuit plate；The input terminal of the current control circuit plate and voltage control circuit plate is connected with the current acquisition end of more voltage doubling rectifing circuits and voltage acquisition end respectively, the common output pulse width adjustment signal IC of output end to PWM drive circuit plate.The output of PWM is controlled simultaneously using the design of full analog circuit, and using current control and voltage control, fast response time, control precision is high.
Description
Technical field
The utility model relates to high-frequency and high-voltage power supply technical field, in particular to a kind of direct current 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) in addition, single feedback function of the general only current or voltage of existing PWM driving, controls precision also not
It is high.
Summary of the invention
In order to solve the problems, such as described in background technique, the utility model provides a kind of direct current high-frequency and high-voltage power supply, using complete
The design of 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.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of direct current high-frequency and high-voltage power supply, including it is sequentially connected complete to high frequency high-voltage output end by low-voltage direct input terminal
Bridge inversion unit, step-up transformer and more voltage doubling rectifing circuits；It further include the driving for being driven to full-bridge inverting unit
Control unit；The drive control unit includes PWM drive circuit plate.
The drive control unit further includes the current control circuit plate being connected with PWM drive circuit plate and voltage control
Circuit board processed；The input terminal of the current control circuit plate and voltage control circuit plate electricity with more voltage doubling rectifing circuits respectively
Stream collection terminal is connected with voltage acquisition end, the common output pulse width adjustment signal IC of output end to PWM drive circuit plate.
The current control circuit plate includes being followed by input terminal to the sequentially connected first voltage of output end and impedance
Translation circuit, the first current potential translation circuit and the first comparison circuit；The voltage control circuit plate includes by input terminal to defeated
The sequentially connected second voltage of outlet follows and impedance inverter circuit, the second current potential translation circuit and the second comparison circuit.
The PWM drive circuit plate includes phase-shift controller and four tunnel high speed MOSTET drivers, and phase-shift controller is defeated
Enter pulse width adjustment signal IC of the end reception from current control circuit plate and voltage control circuit plate, output end output four
Driving signal is triggered on road, and exports four tunnel driving signals to full-bridge inverting unit by four tunnel high speed MOSTET drivers.
The phase-shift controller model UC3875.
The high speed MOSTET drive model is TC4420.
The output port of the phase-shift controller of the PWM drive circuit plate is also exported for limiting slope change rate
SLOPE signal, SLOPE signal are respectively connected to the input terminal of flow control circuit plate and voltage control circuit plate.
The current acquisition signal and first voltage of the current control circuit plate follow and the input of impedance inverter circuit
End connection；Access an input terminal of the first comparison circuit after the first current potential translation circuit, the first comparison circuit another
Input terminal connects the SLOPE signal from PWM driving plate and the electric current setting signal from potentiometer.
The voltage acquisition signal and second voltage of the voltage control circuit plate follow and the input of impedance inverter circuit
End connection；Access an input terminal of the second comparison circuit after the second current potential translation circuit, the second comparison circuit another
Input terminal SLOPE signal of the connection from PWM driving plate and from the voltage setting signal of potentiometer.
Compared with prior art, the utility model has the beneficial effects that
1, using the design of full analog circuit, fast response time.
2 and using current control and voltage control the output of PWM is controlled simultaneously, control precision height.
3, using phasing resonant controller UC3875, driving to four tunnel high speed MOSTET drivers, UC3875 can be real
Existing driving of the Sofe Switch actuation techniques to metal-oxide-semiconductor type full bridge inverter.
4, PWM drive circuit plate feeds back to the SLOPE signal of voltage control panel and current control plate, can limit given letter
Number slope maximum value and minimum value, to signal carry out voltage-limiting protection, prevent voltage overshoot and improve response speed.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of the utility model；
Fig. 2 is the current control circuit plate circuit structure block diagram of the utility model；
Fig. 3 is the voltage control circuit plate circuit structure block diagram of the utility model；
Fig. 4 is the PWM drive circuit plate circuit structure block diagram of the utility model；
Fig. 5 is that the current control circuit plate of the utility model specifically designs circuit diagram；
Fig. 6 is that the voltage control circuit plate of the utility model specifically designs circuit diagram；
Fig. 7 is the phase-shift controller circuit diagram of the PWM drive circuit plate of the utility model；
Fig. 8 is the tetra- tunnel high speed MOSTET drive circuit figure of PWM drive circuit Ban of the utility model；
Fig. 9 is the full-bridge inverting element circuit figure of the utility model；
Figure 10 is the step-up transformer and more voltage doubling rectifing circuit figures of the utility model.
Wherein: the more voltage doubling rectifing circuit 4- drive control unit 5-PWM of 1- full-bridge inverting unit 2- step-up transformer 3- drive
Dynamic circuit board 6- current control circuit plate 7- voltage control circuit plate 8- first voltage follows and the first electricity of impedance inverter circuit 9-
Bit map circuit 10- the first comparison circuit 11- second voltage follows and impedance inverter circuit 12- the second current potential translation circuit 13-
Second comparison circuit.
Specific embodiment
Specific embodiment provided by the utility model is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of direct current high-frequency and high-voltage power supply, including by low-voltage direct input terminal to high frequency high-voltage output end according to
Full-bridge inverting unit 1, step-up transformer 2 and the more voltage doubling rectifing circuits 3 of secondary connection；Further include for full-bridge inverting unit into
The drive control unit 4 of row driving；The drive control unit 4 includes PWM drive circuit plate 5.
The drive control unit 4 further includes the current control circuit plate 6 and electricity being connected with PWM drive circuit plate 5
Press control circuit board 7；The input terminal of the current control circuit plate 6 and voltage control circuit plate 7 respectively with more voltage multiplying rectifiers
The current acquisition end of circuit 3 is connected with voltage acquisition end, common output pulse width adjustment signal IC to the PWM driving of output end
Circuit board 5.
As shown in figure 4, the PWM drive circuit plate 5 includes phase-shift controller and four tunnel high speed MOSTET drivers, move
Phase control device input terminal receives the pulse width adjustment signal IC from current control circuit plate 6 and voltage control circuit plate 7,
Output end exports four tunnels and triggers driving signal, and inverse to full-bridge by four tunnel high speed MOSTET drivers output, four tunnel driving signals
Become unit 1.The phase-shift controller model UC3875.The high speed MOSTET drive model is TC4420.It is described
The output port of phase-shift controller of PWM drive circuit plate 5 also export the SLOPE signal for limiting slope change rate,
SLOPE signal is respectively connected to the input terminal of flow control circuit plate 6 and voltage control circuit plate 7.
As shown in Fig. 2, the current control circuit plate 6 includes by input terminal to the sequentially connected first voltage of output end
It follows and impedance inverter circuit 8, the first current potential translation circuit 9 and the first comparison circuit 10.The current control circuit plate 6
Current acquisition signal is followed with first voltage and the input terminal of impedance inverter circuit 8 is connect；It is followed by through the first current potential translation circuit 9
Enter an input terminal of the first comparison circuit 10, another input terminal of the first comparison circuit 10 is connected from PWM driving plate 5
SLOPE signal and electric current setting signal from potentiometer.
As shown in figure 3, voltage control circuit plate 7 include followed by input terminal to the sequentially connected second voltage of output end and
Impedance inverter circuit 11, the second current potential translation circuit 12 and the second comparison circuit 13.The voltage of the voltage control circuit plate 7
Acquisition signal is followed with second voltage and the input terminal of impedance inverter circuit 11 is connect；12 access after the second current potential translation circuit
Another input terminal of one input terminal of the second comparison circuit 13, the second comparison circuit 13 is connected from PWM driving plate 5
SLOPE signal and voltage setting signal from potentiometer.
Fig. 5 is the specific implementation circuit diagram of the current control circuit plate 6, wherein first voltage follows and impedance becomes
Change sample circuit (being connected in series by resistance R14 and potentiometer W3) that circuit 8 connects by CA3240 (IC1) and its input terminal, with
And resistance R1 and R2 are constituted, the input terminal terminal J2 of voltage follow and impedance inverter circuit 8 is the end of outer even current acquisition signal
Son, current acquisition signal carry out voltage transformation by resistance R13 via after voltage sampling, are divided into two-way later and are respectively connected to CA3240
(IC1) two input terminals (No. 5 pins and No. 3 pins), connect into signal tracking circuit, CA3240 by CA3240 (IC1)
(IC1) output two paths of signals (No. 1 pin and No. 7 pins) is respectively via current potential translation circuit 9 described in resistance R3 and R5 access
CA3240 (IC2) two input terminals, via CA3240 (IC2) constitute current potential translation circuit after, the one of CA3240 (IC2)
An input terminal (No. 2 pins) of the CA3240 (IC3) of a output pin (No. 1 pin) access comparison circuit 10, than
Another input terminal (No. 5 pins) compared with the CA3240 (IC3) of circuit 10 connects the SLOPE signal from PWM driving plate and comes
The current or voltage setting signal of self-potential device (the J3 terminal in figure is external potentiometer).
Fig. 6 is the specific implementation circuit diagram of the voltage control circuit plate 7, the current control of circuit structure and Fig. 5
The circuit structure of circuit board 6 is identical, and difference place is only that the resistance R14 and potentiometer W3 and electricity of the voltage sampling of input terminal
It presses the resistance value of transformation resistance R13 to select different, is not detailed herein.
Fig. 7 is the physical circuit figure of the phase-shift controller UC3875 of the PWM driving plate, by current control plate 6 and electricity
Voltage-controlled making sheet 7 and the PWM adjustment signal IC come has accessed the 2nd and No. 3 pin of UC3875, meanwhile, No. 6 pins of UC3875
For SLOPE signal output end, SLOPE signal end is via final output SLOPE signal after amplifier CA3140.In addition,
The four tunnel driving signal output ends of UC3875 are 8,9,13 and No. 14 pins, export IC1-8, IC1-9, IC1-13, IC1- respectively
14 4 signals access the input terminal of four tunnel high speed MOSTET driver TC4420.Other circuit parts in Fig. 7 are
The conventional design circuit of UC3875.
The practical circuit diagram of tetra- tunnel high speed MOSTET driver TC4420 of Tu8Wei, input terminal be respectively as follows: IC1-8, IC1-9,
Tetra- signals of IC1-13, IC1-14, output end export four tunnel driving signals, are connected to full-bridge inverting electricity by terminal J5 and J6 respectively
In road 1.
Fig. 9 is 1 implementation example figure of full bridge inverter, and full bridge inverter 1 is routine techniques, is not explained in detail here,
For the inversion element Q1~Q4 used in the present embodiment for MOS type inversion pipe IRFB4110, the output end of inverter circuit 1 is in figure
The end AB and CD, AB and CD terminate the input terminal of the step-up transformer 2 in Figure 10.
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 (voltage doubling rectifing circuit is the prior art, is not described in detail here), final output high-frequency and high-voltage power supply.
Above embodiments are implemented under premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but the protection scope of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (6)
1. a kind of direct current high-frequency and high-voltage power supply, including by low-voltage direct input terminal to the sequentially connected full-bridge of high frequency high-voltage output end
Inversion unit, step-up transformer and more voltage doubling rectifing circuits；It further include the driving control for being driven to full-bridge inverting unit
Unit processed；The drive control unit includes PWM drive circuit plate；
It is characterized in that, the drive control unit further includes the current control circuit plate being connected with PWM drive circuit plate
With voltage control circuit plate；The input terminal of the current control circuit plate and voltage control circuit plate respectively with more voltage multiplying rectifiers
The current acquisition end of circuit is connected with voltage acquisition end, common output pulse width adjustment signal IC to the PWM driving of output end
Circuit board；
The current control circuit plate include followed by input terminal to the sequentially connected first voltage of output end and impedance transformation
Circuit, the first current potential translation circuit and the first comparison circuit；The voltage control circuit plate includes by input terminal to output end
Sequentially connected second voltage follows and impedance inverter circuit, the second current potential translation circuit and the second comparison circuit；
The PWM drive circuit plate includes phase-shift controller and four tunnel high speed MOSTET drivers, phase-shift controller input terminal
The pulse width adjustment signal IC from current control circuit plate and voltage control circuit plate is received, output end exports the touching of four tunnels
Driving signal is sent out, and exports four tunnel driving signals to full-bridge inverting unit by four tunnel high speed MOSTET drivers.
2. a kind of direct current high-frequency and high-voltage power supply according to claim 1, which is characterized in that the phase-shift controller model
For UC3875.
3. a kind of direct current high-frequency and high-voltage power supply according to claim 1, which is characterized in that the high speed MOSTET driving
Device model TC4420.
4. a kind of direct current high-frequency and high-voltage power supply according to claim 1, which is characterized in that the PWM drive circuit plate
The output port of phase-shift controller also export the SLOPE signal for limiting slope change rate, SLOPE signal is respectively connected to
The input terminal of current control circuit plate and voltage control circuit plate.
5. a kind of direct current high-frequency and high-voltage power supply according to claim 1, which is characterized in that the current control circuit plate
In, current acquisition signal is followed with first voltage and the input terminal of impedance inverter circuit is connect；After the first current potential translation circuit
An input terminal of the first comparison circuit is accessed, another input terminal of the first comparison circuit is connected from PWM driving plate
SLOPE signal and electric current setting signal from potentiometer.
6. a kind of direct current high-frequency and high-voltage power supply according to claim 1, which is characterized in that the voltage control circuit plate
In, voltage acquisition signal is followed with second voltage and the input terminal of impedance inverter circuit is connect；After the second current potential translation circuit
An input terminal of the second comparison circuit is accessed, another input terminal of the second comparison circuit is connected from PWM driving plate
SLOPE signal and voltage setting signal from potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821791611.2U CN209030097U (en) | 2018-11-01 | 2018-11-01 | A kind of direct current high-frequency and high-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821791611.2U CN209030097U (en) | 2018-11-01 | 2018-11-01 | A kind of direct current high-frequency and high-voltage power supply |
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| Publication Number | Publication Date |
|---|---|
| CN209030097U true CN209030097U (en) | 2019-06-25 |
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ID=66907771
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821791611.2U Active CN209030097U (en) | 2018-11-01 | 2018-11-01 | A kind of direct current high-frequency and high-voltage power supply |
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| CN (1) | CN209030097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115967286A (en) * | 2022-10-21 | 2023-04-14 | 无锡研平电子科技有限公司 | Constant-voltage constant-current adjustable control circuit of high-voltage electrostatic generator |
-
2018
- 2018-11-01 CN CN201821791611.2U patent/CN209030097U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115967286A (en) * | 2022-10-21 | 2023-04-14 | 无锡研平电子科技有限公司 | Constant-voltage constant-current adjustable control circuit of high-voltage electrostatic generator |
| CN115967286B (en) * | 2022-10-21 | 2023-09-12 | 无锡研平电子科技有限公司 | Constant voltage and constant current adjustable control circuit of high-voltage electrostatic generator |
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