CN112000167B - Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source - Google Patents
Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source Download PDFInfo
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Abstract
A multi-path parallel ultra-high-speed low-voltage large-current pulse type constant current source relates to the technical field of power supplies, and the problem of how to design a multi-path parallel ultra-high-speed large-current pulse type constant current source with output current reaching kiloamperes and pulse rising speed of microsecond level; through the independent control of multi-path output, the DSP controller sends out SPI signals, uniformly sends out the same given pulse signals, and inputs the same given pulse signals to a pulse signal generating source circuit to ensure the current sharing of a constant current source; the Hall current sensors of the main circuit respectively sample output currents of the IGBT emitters as feedback signals, the feedback signals are input into the pulse constant current source control circuit and compared with given signals, the feedback signals are used for controlling driving voltage, the IGBTs in the main circuit work in a linear region, the output current and the pulse width are controlled, and constant current output is achieved; the control signal EN uniformly controls the pulse signal to be switched on and off through the same I/O port, the consistency of the time sequence of the rising edge of the control signal is ensured, the parallel connection of multiple paths of IGBTs is realized, and the output current reaches the kiloampere level.
Description
Technical Field
The invention relates to the technical field of power supplies, in particular to a multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source.
Background
The constant current source is a direct current source which can output current which is not changed along with the change of self resistance value and the fluctuation of external voltage, and the pulse type constant current source is used in the tests of semiconductors, laser diodes, superconductors and the like. The pulse type constant current source which is ubiquitous in the market at present is low in current, the rising time of pulses is slow, along with the development and the progress of science and technology, the pulse type constant current source has a plurality of types and currents up to thousands of A in the field similar to semiconductors, and high requirements are provided for the pulse type constant current source, so that the research on the novel multi-path parallel connection, ultrahigh speed, pulse type and high-current constant current source has high frontier and importance.
An ideal constant current source should have the following characteristics: does not change due to load (output voltage) variations; does not change due to the change of the environmental temperature; the internal resistance is infinite (so that its current can flow out to the outside entirely). A circuit capable of supplying a constant current is a constant current source circuit, which is also called a current mirror circuit.
The basic constant current source circuit mainly comprises an input stage and an output stage, wherein the input stage provides a reference current, and the output stage outputs a required constant current. The basic principle of forming a constant current source circuit is as follows: the constant current source circuit is to provide a stable current to ensure the stable operation of other circuits. That is, the constant current source circuit is required to output a constant current, and therefore the device as the output stage should have a current-voltage characteristic of a saturated output current. This can be achieved using BJTs or MOSFETs operating in saturation of the output current.
To ensure that the current of the output transistor is stable, two conditions must be met: a) the input voltage of the power supply needs to be stable-the input stage needs to be a constant voltage source; b) the output resistance of the output transistor is as large as possible (preferably infinite) -the output stage needs to be a constant current source.
Requirements for input stage devices: since the input stage needs to be a constant voltage source, a device having voltage saturation current-voltage characteristics may be employed as the input stage. A general pn junction diode has such a characteristic-exponentially rising current-voltage characteristic; in addition, a diode formed by short-circuiting the source-drain of the enhancement MOSFET also has a similar current-voltage characteristic, namely a parabolic rising current-voltage characteristic. When a diode is used as an input stage device in an IC, the diode is generally an integrated diode formed by connecting transistors appropriately, because the diode can adapt to IC processes and has its special advantages. For these triodes, it is required to have a certain amplification performance, which enables the corresponding diodes to have a good constant voltage performance.
Requirements for output stage devices: if BJT is used, in order to increase its output resistance, it is necessary to try to reduce the Evarly effect (the base width modulation effect), i.e., to increase Early voltage as much as possible. If a MOSFET is used, it is necessary to try to reduce its channel length modulation effect and substrate bias effect in order to increase its output resistance. Thus, long channel MOSFETs are generally selected here, rather than short channel devices.
In the prior art, a chinese patent application "ultra-high-speed high-current pulse constant current source" with an application number of 201610908411.X published as 2017, 2, month and 22, is connected with a power supply in parallel to form a large capacitor, so that energy stored by the capacitor is mainly provided at an initial working stage of a load, and a microsecond-level rising edge is provided for the load; meanwhile, a high-power Darlington tube is connected with the load in series, so that the load is ensured to pass through pulse current of hundreds of amperes, and the load can be protected to work in a safe current mode.
Although the above patent application can generate constant current pulses with corresponding pulse widths and amplitudes according to different requirements, is applicable to loads such as resistors and LEDs, has the characteristics of simple structure, stable function, safety and reliability, and has the characteristics of faster rising edge (dozens of microseconds), larger current (hundreds of amperes), and the like, the output current of the constant current source only reaches the hundreds of amperes level, and in the published documents of the constant current source, a pulse type constant current source which can be connected in parallel in a multi-path manner, has the current amplitude reaching the thousands of amperes level and has the rising time reaching the microseconds level does not exist.
Disclosure of Invention
The invention aims to solve the technical problem of how to design a high-speed large-current pulse type constant current source which can be connected in parallel in a multi-path mode, has output current reaching kiloamperes and pulse rising speed at microsecond level.
The invention solves the technical problems through the following technical scheme:
a multi-path parallel ultra-high-speed low-voltage large-current pulse type constant current source comprises a main circuit (S11), a pulse constant current source control circuit (S12), a pulse signal generating source (S13) circuit and a DSP controller (S14); the main circuit (S11) comprises a direct current power supply DC5, a capacitor C, a plurality of IGBTs, a plurality of Hall current sensors and a load; the IGBTs are connected in parallel, the collectors of the IGBTs are respectively connected with the anode of a direct current power supply DC5, the emitters of the IGBTs are respectively connected with one end of a load, and the other end of the load is connected with the cathode of a direct current power supply DC 5; the DSP controller (S14) sends out an SPI signal and inputs a control signal EN to a pulse signal generating source (S13) circuit; the pulse signal generating source (S13) circuit is connected with the pulse constant current source control circuit (S12) and is used for sending a plurality of paths of independent PWM signal sources with adjustable amplitude, pulse width and frequency as given signals to the pulse constant current source control circuit (S12); the multiple independent outputs of the pulse constant current source control circuit (S12) are respectively and correspondingly connected with the gates of the IGBTs of the main circuit (S11); a plurality of Hall current sensors of the main circuit (S11) respectively sample emitter output currents of a plurality of IGBTs as feedback signals, the feedback signals are input into the pulse constant current source control circuit (S12) to be compared with given signals, the given signals are used for controlling driving voltage, the plurality of IGBTs in the main circuit (S11) are all enabled to work in a linear region, the output current size and the pulse width are controlled, and constant current output is achieved.
The difficulty of achieving kiloampere-level constant current output by adopting multi-path parallel connection is how to achieve current sharing, the rising edge time of a control signal is microsecond level, and the consistency of the rising edge of the control signal and the accuracy of controlling the current of each path are difficult to ensure; the technical scheme of the invention is independently controlled by multi-path output, the DSP controller (S14) sends out SPI signals, the same given voltage signals are uniformly sent out and input to a pulse signal generating source (S13) circuit, and the current equalization of constant current source current is ensured; the multiple Hall current sensors of the main circuit (S11) respectively sample emitter output currents of multiple IGBTs as feedback signals, and input the feedback signals into the pulse constant current source control circuit (S12) to be compared with given signals, so that the drive voltage is controlled, the multiple IGBTs in the main circuit (S11) all work in a linear region, the output current and the pulse width are controlled, and constant current output is achieved; the control signal EN uniformly controls the on-off of the pulse signal through the same I/O port, the consistency of the rising edge of the control signal is ensured, the parallel connection of multiple paths of IGBTs is realized, and the output current reaches the kiloampere level.
As a further improvement of the technical scheme of the invention, the pulse constant current source control circuit (S12) comprises a plurality of paths of IGBT driving circuits with the same structure, and the output ends of the plurality of paths of IGBT driving circuits are respectively connected with the gate poles of the plurality of IGBTs correspondingly.
As a further improvement of the technical scheme of the invention, the IGBT driving circuit comprises an operational amplifier, a direct current power supply, a PNP type triode, an NPN type triode and a driving resistor; the direct current power supply supplies power for the operational amplifier, the operational amplifier forms a proportional integral regulator, the NPN type triode and the NPN type triode form a push-pull driving circuit, a collector electrode of the NPN type triode and an emitter electrode of the NPN type triode are respectively connected between a positive electrode and a negative electrode of the direct current power supply, an input end of the push-pull driving circuit is connected with an output end of the proportional integral regulator, an output end of the push-pull driving circuit is connected with one end of the driving resistor, and the other end of the driving resistor is used as an output port of the IGBT driving circuit and is connected with a gate electrode of the corresponding IGBT.
As a further improvement of the technical scheme of the invention, the pulse signal generating source (S13) circuit comprises multiple independent PWM signal source circuits with the same structure, wherein the output ends of the multiple independent PWM signal source circuits respectively output multiple PWM signal sources with adjustable amplitude, pulse width and frequency, and respectively input the multiple PWM signal sources to one input end of a proportional-integral regulator in the corresponding multiple IGBT driving circuits as a given signal; and the other input end of the proportional-integral regulator is respectively connected with the output ends of the Hall current sensors of the main circuit and is used for inputting the sampling current of the Hall current sensors as a feedback signal.
As a further improvement of the technical scheme of the invention, each independent PWM signal source circuit comprises a digital isolation conversion chip, a digital-to-analog conversion chip and a high-speed optical coupler, and an SPI signal is input into the digital-to-analog conversion chip after being isolated and converted by the digital isolation conversion chip and is converted into analog voltage with controllable amplitude by the digital-to-analog conversion chip; the control signal EN generates an isolated enable signal through high-speed optical coupling isolation to control the on-off of the digital-to-analog conversion chip, so that the pulse width and the frequency of the PWM signal are controlled.
As a further improvement of the technical scheme of the invention, the capacitor C comprises a plurality of Kathon 63V/22000uF electrolytic capacitors and a plurality of EACO700V/845uF film capacitors, and the plurality of electrolytic capacitors are connected with the plurality of film capacitors in parallel.
As a further improvement of the technical scheme of the invention, the model of the plurality of IGBTs is Yingfei FF600R12ME 4.
As a further improvement of the technical scheme of the invention, the model of the plurality of Hall current sensors is a Lyme sensor LF-505S.
As a further improvement of the technical scheme of the invention, the model of the operational amplifier is ADA4610-1, the model of the PNP type triode is FTZ951, and the model of the NPN type triode is FZT 851.
As a further improvement of the technical scheme of the invention, the model of the digital isolation conversion chip is ADUM1401, the model of the digital-to-analog conversion chip is DAC8830, and the model of the high-speed optical coupler is 6N 137.
The invention has the advantages that:
(1) the technical scheme of the invention is independently controlled by multi-path output, the DSP controller (S14) sends out SPI signals, the same given voltage signals are uniformly sent out and input to a pulse signal generating source (S13) circuit, and the current equalization of constant current source current is ensured; the multiple Hall current sensors of the main circuit (S11) respectively sample emitter output currents of multiple IGBTs as feedback signals, and input the feedback signals into the pulse constant current source control circuit (S12) to be compared with given signals, so that the drive voltage is controlled, the multiple IGBTs in the main circuit (S11) all work in a linear region, the output current and the pulse width are controlled, and constant current output is achieved; the control signal EN uniformly controls the on-off of the pulse signal through the same I/O port, the consistency of the rising edge of the control signal is ensured, the parallel connection of multiple paths of IGBTs is realized, and the output current reaches the kiloampere level.
(2) The operational amplifier forms a proportional-integral regulator, the regulation speed of the proportional-integral regulator can reach 21V/us, and the proportional-integral regulator has the characteristics of high regulation speed, low offset voltage and low temperature drift;
(3) the NPN type triode and the NPN type triode form a push-pull driving circuit, and the driving capability of the push-pull driving circuit is enhanced; the output of the push-pull driving circuit is connected with the driving resistor, so that the rising speed of the driving voltage is improved.
(4) A plurality of large electrolytic capacitors on the laminated busbar are in parallel discharge, so that parasitic inductance on a circuit is reduced, a raised microsecond level is realized, and low ESR and low inductance of a circuit main loop are realized.
(5) The current sampling of the Hall current sensor adopts high-edge isolation sampling, so that the sampling interference is reduced, and the control accuracy is easy to realize.
(6) The method is realized by adopting the DSP instead of the FPGA, so that the cost is lower, and the scheme is simpler and easier to realize.
Drawings
Fig. 1 is a schematic circuit diagram of a multi-path parallel ultra-high-speed low-voltage large-current pulsed constant current source according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further described by combining the drawings and the specific embodiments in the specification:
example one
As shown in fig. 1, the multi-path parallel ultra-high-speed low-voltage large-current pulse type constant current source comprises a main circuit (S11), a pulse constant current source control circuit (S12) and a pulse signal generating source (S13) circuit; the pulse signal generating source (S13) circuit is connected with the pulse constant current source control circuit (S12) and is used for sending a PWM signal source with adjustable amplitude, pulse width and frequency to the pulse constant current source control circuit (S12) as a given signal; the multi-path output of the pulse constant current source control circuit (S12) is respectively correspondingly connected with the IGBTs of the main circuit (S11), the output currents of the emitters of the IGBTs of the main circuit (S11) are input into the pulse constant current source control circuit (S12) as feedback signals, given signals are compared with the feedback signals, and a proportional-integral regulator is adopted to control driving voltage, so that the IGBTs in the main circuit (S11) all work in a linear region, the control of the output current and the pulse width is realized, and the constant current output is achieved.
The main circuit (S11) comprises a direct current power supply DC5, a capacitor C and a plurality of IGBTs, wherein four IGBTs are connected in parallel in the embodiment and are respectively a first IGBT, a second IGBT, a third IGBT, a fourth IGBT, a plurality of Hall current sensors and a load; two ends of the capacitor C are connected between the positive electrode and the negative electrode of the direct current power supply DC5 in parallel; the collector electrode of the first IGBT, the collector electrode of the second IGBT, the collector electrode of the third IGBT and the collector electrode of the fourth IGBT are all connected to the positive electrode of a direct-current power supply DC5, the emitter electrode of the first IGBT, the emitter electrode of the second IGBT, the emitter electrode of the third IGBT and the emitter electrode of the fourth IGBT are all connected to one end of a load, and the other end of the load is connected to the negative electrode of a direct-current power supply DC 5; the first Hall current sensor to the fourth Hall current sensor are respectively used for sampling the output currents of the emitting electrodes of the first IGBT to the fourth IGBT and feeding back the output currents to the pulse constant current source control circuit (S12), and the plurality of IGBTs in the main circuit (S11) are all operated in a linear region through the control of the driving voltage in the pulse constant current source control circuit (S12), so that the control of the output current size and the pulse width is realized, and the constant current output is achieved; and the sampling interference is reduced by adopting high-edge isolation sampling, and the control accuracy is easy to realize.
A capacitor C is charged by a direct current power supply DC5, a direct current power supply DC5 is a 48V voltage power supply, the capacitor C is formed by connecting a plurality of electrolytic capacitors of Kaempferon 63V/22000uF and a plurality of film capacitors of EACO700V/845uF in parallel, the plurality of large electrolytic capacitors on the laminated busbar are connected in parallel to discharge, parasitic inductance on a circuit is reduced, microsecond level rising is achieved, and low ESR (Equivalent Series Resistance) and low inductance of a circuit main loop are achieved.
The first IGBT to the fourth IGBT adopt Yingfei Ling FF600R12ME4, so that the output current of each path is larger, the output current reaches kiloampere level, and the rising edge time of each path is favorably controlled to reduce the overshoot of the current when the current is switched on; the first Hall current sensor to the fourth Hall current sensor adopt a Lyme sensor LF-505S; the load is a power semiconductor or a resistor.
The pulse constant current source control circuit (S12) comprises four IGBT drive circuits with the same structure, and the output ends of the four IGBT drive circuits are respectively connected with the gate pole of the first IGBT, the gate pole of the second IGBT, the gate pole of the third IGBT and the gate pole of the fourth IGBT.
Taking the first IGBT driving circuit as an example to be specifically explained: the first IGBT driving circuit comprises an operational amplifier U1, the model number of which is ADA 4610-1; a direct current power supply DC1 with a voltage of + -15V; the PNP type triode Q1 and the NPN type triode Q2 are arranged, the model of the triode Q1 is FTZ951, and the model of the triode Q2 is FZT 851; a drive resistor R1; the inverting input end of the operational amplifier U1 is connected with the output end of the PWM signal source circuit, the inverting input end of the operational amplifier U1 is connected with the output end of the Hall current sensor, the positive power source end of the operational amplifier U1 is connected with the positive electrode of the direct current power supply DC1, the negative power source end of the operational amplifier U1 is grounded, the base of the PNP triode Q1 is connected with the base of the NPN triode Q2 and then connected with the output end of the operational amplifier U1, the collector of the NPN triode Q2 is connected with the positive electrode of the direct current power supply DC1, the emitter of the PNP triode Q1 is connected with the negative electrode of the direct current power supply DC1, the collector of the PNP triode Q1 is connected with the emitter of the NPN triode Q2 and then connected with one end of the driving resistor R1, and the other end of the driving resistor R1 is connected with the gate of the first IGBT. The direct-current power supply DC1 supplies power to the operational amplifier U1, the operational amplifier U1 forms a proportional-integral regulator, the regulation speed of the proportional-integral regulator can reach 21V/us, and the proportional-integral regulator has the characteristics of high regulation speed, low offset voltage and low temperature drift; the triode Q1 and the triode Q2 form a push-pull driving circuit, a collector of the triode Q2 and an emitter of the triode Q1 are respectively connected between the positive pole and the negative pole of a direct-current power supply DC1, the input end of the push-pull driving circuit is connected with the output end of the proportional-integral regulator, the output end of the push-pull driving circuit is connected to one end of a driving resistor R1, and the other end of the driving resistor R1 is used as the output port of the first IGBT driving circuit and is correspondingly connected with the gate pole of the first IGBT; the push-pull driving circuit enhances the driving capability; the driving resistor R1 improves the stability of the driving voltage.
The pulse signal generating source (S13) circuit comprises four independent PWM signal source circuits with the same structure, and the output ends of the four independent PWM signal source circuits respectively output four PWM signal sources with adjustable amplitude, pulse width and frequency, namely PWM 1-PWM 4; the PWM 1-PWM 4 are respectively input to one input end of a proportional-integral regulator in the corresponding four-way IGBT driving circuit to be used as given signals; and the other input end of the proportional-integral regulator is respectively connected with the output ends of the first Hall current sensor to the fourth Hall current sensor of the main circuit and is used for inputting the sampling current of the Hall current sensors as a feedback signal.
The first path of independent PWM signal source circuit is taken as an example for specific explanation: the first independent PWM signal source circuit comprises a digital isolation conversion chip U5, the type of which is ADUM 1401; a digital-to-analog conversion chip U9, model DAC 8830; one is a high-speed optical coupler U13 with the model number of 6N 137; a DSP (Digital Signal processing) controller (S14) sends out an SPI Signal and a control Signal EN; a Serial Peripheral Interface (SPI), which is a synchronous Serial Interface technology and is a high-speed, full-duplex, synchronous communication bus, includes a CS/SDI/SDO/CLK signal, and the SPI signal is isolated and converted by a digital isolation conversion chip U5, then input into a digital-to-analog conversion chip U9, and converted by a digital-to-analog conversion chip U9 into an analog voltage with a controllable amplitude; the control signal EN is isolated by a high-speed optocoupler U13 to generate an isolated enabling signal to control the on-off of a digital-to-analog conversion chip U9, so that the pulse width and the frequency of a PWM signal are controlled; the method is realized by adopting the DSP instead of the FPGA, so that the cost is lower, and the scheme is simpler and easier to realize.
The difficulty of achieving kiloampere-level constant current output by adopting multi-path parallel connection is how to achieve current sharing, the rising edge time of a control signal is microsecond level, and the consistency of the rising edge of the control signal and the accuracy of controlling the current of each path are difficult to ensure; in the technical scheme, the multichannel output is independently controlled, and the DSP uniformly issues the same given voltage signal to ensure the current equalization of the constant current source; the pulse signals are uniformly controlled to be switched on and switched off through the same I/O port, and the consistency of the rising edges of the control signals is ensured.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A multi-path parallel ultra-high-speed low-voltage large-current pulse type constant current source is characterized by comprising a main circuit (S11), a pulse constant current source control circuit (S12), a pulse signal generating source (S13) circuit and a DSP controller (S14); the main circuit (S11) comprises a direct current power supply DC5, a capacitor C, a plurality of IGBTs, a plurality of Hall current sensors and a load; the IGBTs are connected in parallel, the collectors of the IGBTs are respectively connected with the anode of a direct current power supply DC5, the emitters of the IGBTs are respectively connected with one end of a load, and the other end of the load is connected with the cathode of a direct current power supply DC 5; the DSP controller (S14) sends out an SPI signal and inputs a control signal EN to a pulse signal generating source (S13) circuit; the pulse signal generating source (S13) circuit is connected with the pulse constant current source control circuit (S12) and is used for sending a plurality of paths of independent PWM signal sources with adjustable amplitude, pulse width and frequency as given signals to the pulse constant current source control circuit (S12); the multiple independent outputs of the pulse constant current source control circuit (S12) are respectively and correspondingly connected with the gates of the IGBTs of the main circuit (S11); the multiple Hall current sensors of the main circuit (S11) respectively sample emitter output currents of multiple IGBTs as feedback signals, and input the feedback signals into the pulse constant current source control circuit (S12) to be compared with given signals, so that the drive voltage is controlled, the multiple IGBTs in the main circuit (S11) all work in a linear region, the output current and the pulse width are controlled, and constant current output is achieved;
the pulse constant current source control circuit (S12) comprises a plurality of paths of IGBT drive circuits with the same structure, and the output ends of the plurality of paths of IGBT drive circuits are respectively connected with the gate poles of a plurality of IGBTs correspondingly;
the IGBT driving circuit comprises an operational amplifier, a direct current power supply, a PNP type triode, an NPN type triode and a driving resistor; the inverting input end of the operational amplifier is connected with the output end of the PWM signal source circuit, the inverting input end of the operational amplifier is connected with the output end of the Hall current sensor, the positive power source end of the operational amplifier is connected with the positive electrode of the direct-current power supply, the negative power source end of the operational amplifier is grounded, the base electrode of the PNP type triode is connected with the base electrode of the NPN type triode and then connected with the output end of the operational amplifier, the collector electrode of the NPN type triode is connected with the positive electrode of the direct-current power supply, the emitter electrode of the PNP type triode is connected with the negative electrode of the direct-current power supply, the collector electrode of the PNP type triode is connected with the emitter electrode of the NPN type triode and then connected with one end of the driving resistor, and the other end of the driving resistor is connected with the gate electrode of the IGBT; the direct-current power supply supplies power to the operational amplifier, the operational amplifier forms a proportional integral regulator, the PNP type triode and the NPN type triode form a push-pull driving circuit, a collector of the PNP type triode and an emitter of the NPN type triode are respectively connected between a positive electrode and a negative electrode of the direct-current power supply, an input end of the push-pull driving circuit is connected with an output end of the proportional integral regulator, an output end of the push-pull driving circuit is connected with one end of the driving resistor, and the other end of the driving resistor is used as an output port of the IGBT driving circuit and is connected with a gate pole of the corresponding IGBT;
the pulse signal generating source (S13) circuit comprises a plurality of independent PWM signal source circuits with the same structure, wherein the output ends of the independent PWM signal source circuits respectively output a plurality of PWM signal sources with adjustable amplitude, pulse width and frequency, and the PWM signal sources are respectively input to one input end of a proportional-integral regulator in the corresponding IGBT driving circuit as given signals; the other input end of the proportional-integral regulator is respectively connected with the output ends of a plurality of Hall current sensors of the main circuit and is used for inputting the sampling current of the Hall current sensors as a feedback signal;
each independent PWM signal source circuit comprises a digital isolation conversion chip, a digital-to-analog conversion chip and a high-speed optical coupler, and an SPI signal is input into the digital-to-analog conversion chip after being isolated and converted by the digital isolation conversion chip and is converted into analog voltage with controllable amplitude by the digital-to-analog conversion chip; the control signal EN generates an isolated enabling signal through high-speed optical coupling isolation to control the on-off of a digital-to-analog conversion chip, so that the pulse width and the frequency of a PWM signal are controlled;
the capacitor C comprises a plurality of Kathon 63V/22000uF electrolytic capacitors and a plurality of EACO700V/845uF film capacitors, and the plurality of electrolytic capacitors are connected with the plurality of film capacitors in parallel.
2. The constant current source of claim 1, wherein the IGBTs are of the type of an inflight FF600R12ME 4.
3. The constant current source of claim 1, wherein said plurality of hall current sensors are of the type of lambda sensor LF-505S.
4. The constant current source of claim 1, wherein the operational amplifier is of the type ADA4610-1, the PNP transistor is of the type FTZ951, and the NPN transistor is of the type FZT 851.
5. The constant current source of claim 1, wherein the digital isolation conversion chip is of type ADUM1401, the digital-to-analog conversion chip is of type DAC8830, and the high-speed optical coupler is of type 6N 137.
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| CN202011008328.XA CN112000167B (en) | 2020-09-23 | 2020-09-23 | Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source |
| PCT/CN2020/134880 WO2022062191A1 (en) | 2020-09-23 | 2020-12-09 | Parallel-connected highspeed low-voltage large-current pulsed constant current source |
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| CN112000167B (en) * | 2020-09-23 | 2021-11-12 | 合肥科威尔电源系统股份有限公司 | Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source |
| CN112886794B (en) * | 2021-04-02 | 2024-04-09 | 江西力源海纳科技股份有限公司 | Control method and control device for high-power high-frequency switching power supply |
| CN114243449B (en) * | 2021-12-09 | 2024-03-19 | 中国电子科技集团公司第十一研究所 | Device and method for adjusting current pulse parameters |
| CN117792142B (en) * | 2024-02-28 | 2024-05-14 | 中国空气动力研究与发展中心高速空气动力研究所 | High-power high-frequency pulse plasma power supply and charging and discharging method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365818Y (en) * | 1999-01-14 | 2000-02-23 | 江苏新科电子集团公司 | Power amplifing device for power amplifier |
| CN1728551A (en) * | 2005-07-08 | 2006-02-01 | 浙江大学 | Controller capable of adjusting and controlling width of pulse |
| CN103178743A (en) * | 2013-04-10 | 2013-06-26 | 浙江大学 | Double-boosting high-voltage pulse power supply |
| CN103354428A (en) * | 2013-06-17 | 2013-10-16 | 北京航空航天大学 | Super-audio frequency fast-transformation DC (direct current) pulse plasma spraying power supply |
| CN106444951A (en) * | 2016-10-13 | 2017-02-22 | 复旦大学 | Current pulse-typed constant current source with ultrahigh speed |
| CN208538011U (en) * | 2018-07-31 | 2019-02-22 | 珠海市运泰利自动化设备有限公司 | A kind of high-precision pulse constant-current source |
| CN210866772U (en) * | 2019-11-18 | 2020-06-26 | 武汉华日精密激光股份有限公司 | Semiconductor laser heavy current pulse constant current source |
| CN111696802A (en) * | 2019-09-30 | 2020-09-22 | 刘卫歧 | Intelligent chip set module of non-arc switch |
| CN212322145U (en) * | 2020-09-23 | 2021-01-08 | 合肥科威尔电源系统股份有限公司 | Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200702968A (en) * | 2005-07-12 | 2007-01-16 | Holtek Semiconductor Inc | Architecture and method of power-controlling circuit applicable to electronic cooker |
| CN100527606C (en) * | 2007-04-25 | 2009-08-12 | 山东新风光电子科技发展有限公司 | Linear amplifier and its high power pulse power source |
| US9000673B2 (en) * | 2010-05-25 | 2015-04-07 | Virginia Tech Intellectual Properties, Inc. | Multi-channel two-stage controllable constant current source and illumination source |
| CN105827134B (en) * | 2015-12-25 | 2019-05-17 | 温州大学 | Multipath magnetic circuit low-voltage, high-current digital AC constant-current source |
| CN109839980A (en) * | 2017-11-27 | 2019-06-04 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of configurable constant-current source circuit of bipolar great power |
| CN112000167B (en) * | 2020-09-23 | 2021-11-12 | 合肥科威尔电源系统股份有限公司 | Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source |
-
2020
- 2020-09-23 CN CN202011008328.XA patent/CN112000167B/en active Active
- 2020-12-09 WO PCT/CN2020/134880 patent/WO2022062191A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365818Y (en) * | 1999-01-14 | 2000-02-23 | 江苏新科电子集团公司 | Power amplifing device for power amplifier |
| CN1728551A (en) * | 2005-07-08 | 2006-02-01 | 浙江大学 | Controller capable of adjusting and controlling width of pulse |
| CN103178743A (en) * | 2013-04-10 | 2013-06-26 | 浙江大学 | Double-boosting high-voltage pulse power supply |
| CN103354428A (en) * | 2013-06-17 | 2013-10-16 | 北京航空航天大学 | Super-audio frequency fast-transformation DC (direct current) pulse plasma spraying power supply |
| CN106444951A (en) * | 2016-10-13 | 2017-02-22 | 复旦大学 | Current pulse-typed constant current source with ultrahigh speed |
| CN208538011U (en) * | 2018-07-31 | 2019-02-22 | 珠海市运泰利自动化设备有限公司 | A kind of high-precision pulse constant-current source |
| CN111696802A (en) * | 2019-09-30 | 2020-09-22 | 刘卫歧 | Intelligent chip set module of non-arc switch |
| CN210866772U (en) * | 2019-11-18 | 2020-06-26 | 武汉华日精密激光股份有限公司 | Semiconductor laser heavy current pulse constant current source |
| CN212322145U (en) * | 2020-09-23 | 2021-01-08 | 合肥科威尔电源系统股份有限公司 | Multi-path parallel ultrahigh-speed low-voltage large-current pulse type constant current source |
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| CN112000167A (en) | 2020-11-27 |
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