CN111130344B - Space microsecond level pulse power supply circuit - Google Patents

Space microsecond level pulse power supply circuit Download PDF

Info

Publication number
CN111130344B
CN111130344B CN201911311870.XA CN201911311870A CN111130344B CN 111130344 B CN111130344 B CN 111130344B CN 201911311870 A CN201911311870 A CN 201911311870A CN 111130344 B CN111130344 B CN 111130344B
Authority
CN
China
Prior art keywords
electrically connected
resistor
pulse
circuit
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911311870.XA
Other languages
Chinese (zh)
Other versions
CN111130344A (en
Inventor
陈海涛
黄军
苗伟童
何小斌
王磊
丁帅
甘雨朋
王雨琛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Space Power Sources
Original Assignee
Shanghai Institute of Space Power Sources
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Space Power Sources filed Critical Shanghai Institute of Space Power Sources
Priority to CN201911311870.XA priority Critical patent/CN111130344B/en
Publication of CN111130344A publication Critical patent/CN111130344A/en
Application granted granted Critical
Publication of CN111130344B publication Critical patent/CN111130344B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H02M3/02—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
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Amplifiers (AREA)

Abstract

The invention discloses a space microsecond level pulse power supply circuit which comprises an energy storage unit, a charging unit and a pulse shaping unit, wherein the charging unit comprises a BUCK topological circuit and a first driving circuit, a first switch tube is arranged in the BUCK topological circuit, the output end of the first driving circuit is electrically connected with the first switch tube, an isolation transformer for magnetic isolation is arranged in the first driving circuit, the pulse shaping unit comprises a diode group, a second switch tube and a second driving circuit, the second driving circuit comprises a current stabilizing circuit and a pulse driving circuit, the diode group, the second switch tube and the current stabilizing circuit are sequentially connected in series, the output end of the current stabilizing circuit and the output end of the pulse driving circuit are electrically connected with the second switch tube, and a digital isolator for digital magnetic isolation of the current stabilizing circuit is arranged in the pulse driving circuit. The invention provides a space microsecond level pulse power supply circuit which is used in a space strong electromagnetic radiation interference environment and realizes pulse constant current output so as to solve the problem of high-quality power supply of a space pulse laser.

Description

Space microsecond level pulse power supply circuit
Technical Field
The invention relates to the field of power supply of space pulse lasers, in particular to a space microsecond pulse power supply circuit.
Background
By virtue of its excellent characteristics, a semiconductor Laser Device (LD) plays a significant role in high-end technical fields such as military affairs, medical treatment, industrial production, optical fiber communication and the like, and is one of the most widely applied optical devices at present. The stability of the injection current and the working temperature of the semiconductor laser has direct and obvious influence on the output of the semiconductor laser, so that the development of a high-stability semiconductor laser driving power supply has great significance.
Semiconductor lasers are arrays of laser diodes combined in series and parallel, which are essentially laser diodes. The laser diode has characteristics similar to that of a common diode and is a P-N junction structure, so that the output voltage of the driving power supply needs to be higher than the internal P-N junction voltage.
After the electro-optical efficiency of the laser diode array is produced, the internal parameters of the laser diode array are determined and cannot be changed, and the optical power of emitted laser is only linearly related to the driving current. In order to ensure that the laser diode array can stably emit laser, the driving power supply system must output stable current.
The laser is easily damaged due to the fact that the overshoot of the top is too large under the requirement of the rising edge of pulse current generated by a driving power supply. If the pulse current rises slowly, the laser diode array is not damaged, but the following adverse effects are caused: the time of the external excitation current below the threshold current value is prolonged, and more energy is wasted; the pumping energy generated by the laser diode array per unit time becomes less. The requirement on the falling edge of the pulse current generated by the driving power supply is that the pulse current falls too fast, and a large reverse current is easily formed at the tail part, so that the diode array is damaged; if the pulse current drops too slowly, the laser sub-pulse is easily formed after the laser main pulse. Therefore, the ideal current waveform of the semiconductor laser pulse power supply is that the rising time is short, overshoot cannot occur in the rising process, the current is relatively stable in the pulse duration, the falling time is short, and no reverse current exists.
There have been a lot of researches on the pulse power supply of semiconductor laser used on the ground, and the space semiconductor laser has special operating environment and has higher requirements on devices and weight. Therefore, it is desirable to provide a space microsecond pulse power supply circuit which outputs a constant pulse current when a voltage within a preset range of an input voltage is input.
Disclosure of Invention
The invention aims to provide a space microsecond pulse power supply circuit which is used in a space strong electromagnetic radiation interference environment, outputs when the input voltage is within a preset range to realize pulse constant current output, and meets the requirement of laser power supply with pulse output power larger than 4.5kW so as to solve the problem of high-quality power supply of a space pulse laser.
In order to achieve the purpose, the invention provides the following scheme:
a space microsecond pulse power supply circuit, the structure comprises: the energy storage unit is provided with an input end and an output end; the charging unit comprises a BUCK topological circuit and a first driving circuit, a first switch tube is arranged in the BUCK topological circuit, the output end of the first driving circuit is electrically connected with the first switch tube, an isolation transformer for magnetic isolation is arranged in the first driving circuit, and the output end of the BUCK circuit is electrically connected with the input end of the energy storage unit; the pulse shaping unit comprises a diode group, a second switch tube and a second drive circuit, the second drive circuit comprises a current stabilizing circuit and a pulse drive circuit, the first end of the output end of the energy storage unit is electrically connected with one end of the diode group, the other end of the diode group is electrically connected with one end of the input end of the current stabilizing circuit through the second switch tube, the other end of the input end of the current stabilizing circuit is electrically connected with the second end of the output end of the energy storage unit, the output end of the current stabilizing circuit and the output end of the pulse drive circuit are both electrically connected with the second switch tube, the current stabilizing circuit is used for enabling the second switch tube to stably work in a linear amplification area, and a digital isolator for digital magnetic isolation is arranged in the pulse drive circuit.
Optionally, the BUCK circuit further includes a first capacitor, a first diode and an inductor, the first switch tube is an MOS field effect transistor, the first capacitor is connected in parallel with the input end of the charging unit, the first diode is connected in parallel with the source electrode and the drain electrode of the first capacitor through the first switch tube, the cathode of the first diode is respectively connected with the first switch tube and the first end of the inductor, the second end of the inductor is electrically connected with the first end of the input end of the energy storage unit, and the anode of the first diode is electrically connected with the second end of the input end of the energy storage unit.
Optionally, the charging unit further includes a pulse width modulator and a feedback controller, an input end of the feedback controller is electrically connected to the second terminal, the pulse width modulator is electrically connected to an output end of the feedback controller, and the pulse width modulator is electrically connected to an input end of the first driving circuit.
Optionally, the first driving circuit further includes a totem-pole circuit unit, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a third switching tube, a third capacitor, a fourth diode, and a third diode, the totem-pole circuit unit includes a first end, a second end, and a third end, the first end of the totem-pole circuit unit is electrically connected to the output end of the pulse width modulator, the second end of the totem-pole circuit unit is used for being electrically connected to a power supply, the third end of the totem-pole circuit unit is electrically connected to one end of the third resistor, two ends of the third capacitor are respectively electrically connected to the other end of the third resistor and one end of the original side of the isolation transformer, the other end of the original side of the isolation transformer is grounded, and the secondary side of the isolation transformer is provided with a high-voltage end, a medium-voltage end, and a low-voltage end, the high-voltage end of the secondary side of the isolation transformer is electrically connected with the first end of the fifth resistor through the fourth capacitor, the second end of the fifth resistor is electrically connected with the drain electrode of the third switching tube, the source electrode of the third switching tube is electrically connected with the medium voltage end of the isolation transformer, the grid electrode of the third switching tube is electrically connected with the low-voltage end of the isolation transformer through the fourth resistor, the anode of the fourth diode is electrically connected with the medium-voltage end of the isolation transformer, the cathode of the fourth diode is electrically connected with the first end of the fifth resistor, both ends of the sixth resistor are respectively and electrically connected with the cathode of the fourth diode and one end of the seventh resistor, the other end of the seventh resistor is electrically connected with the anode of the fourth diode, the third diode is connected with the seventh resistor in parallel, and the cathode of the third diode is electrically connected with the sixth resistor.
Optionally, the transformation ratio of the isolation transformer is 1:1.3: 1.3.
Optionally, the current stabilizing circuit includes sampling resistor, differential amplifier and simulation P I controller, the both ends of sampling resistor respectively with the second end of energy storage unit output with the second switch tube electricity is connected, differential amplifier's input with the both ends electricity of sampling resistor is connected, simulation P I controller is equipped with first input and second input, the first input of simulation P I controller with the output electricity of differential amplifier is connected, the second input of simulation P I controller is used for inserting reference signal, the output of simulation P I controller with the second switch tube electricity is connected.
Optionally, the pulse driving circuit further includes an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a fifth capacitor, a fourth switching tube and a fifth switching tube, the input end of the digital isolator is used for connecting a bit pulse signal, one end of the output end of the digital isolator is electrically connected to the first end of the ninth resistor, the second end of the ninth resistor is electrically connected to the first end of the tenth resistor, the second end of the tenth resistor is electrically connected to the other end of the output end of the digital isolator, one end of the eighth resistor is electrically connected to the first end of the ninth resistor, the other end of the eighth resistor is used for connecting a power supply, the first end of the ninth resistor is electrically connected to one end of the eleventh resistor and the gate of the fifth switching tube, the other end of the eleventh resistor is grounded, and the source of the fifth switching tube is grounded, the drain electrode of the fifth switch tube is used for being connected with reference voltage, the fifth capacitor is connected with the tenth resistor in parallel, the grid electrode of the fourth switch tube is electrically connected with the second end of the ninth resistor, the source electrode of the fourth switch tube is electrically connected with the second end of the tenth resistor and grounded, and the drain electrode of the fourth switch tube is electrically connected with the second switch tube.
Optionally, the diode group includes a second diode and a pulse laser, an anode of the second diode is electrically connected to a drain of the second switching tube, a cathode of the second diode is electrically connected to the first end of the output end of the energy storage unit, an anode of the pulse laser is electrically connected to the cathode of the second diode, and a cathode of the pulse laser is electrically connected to the anode of the second diode.
Optionally, the energy storage unit is a second capacitor.
Optionally, the totem pole circuit unit includes a first resistor, a second resistor, a first triode and a second triode, two ends of the first resistor are electrically connected to the output end of the pulse width modulator and the base of the first triode, respectively, the collector of the first triode is electrically connected to one end of the second resistor, the other end of the second resistor is used for connecting a power supply, the emitter of the first triode is electrically connected to the emitter of the second triode and one end of the third resistor, the base of the second triode is electrically connected to the base of the first triode, and the collector of the second triode is grounded.
According to the specific embodiment provided by the invention, the invention has the following technical effects:
1) the space microsecond level pulse power supply circuit is used in a space strong electromagnetic radiation interference environment, energy flows in series through the charging unit, the energy storage unit and the pulse shaping unit to supply constant current to the laser, and the voltage difference between the capacitor and the laser is consumed by the MOS tube working in a linear region;
2) the charging unit is used for supplementing energy of the energy storage unit in a pulse gap, the charging unit adopts a BUCK topological circuit capable of running in a no-load mode, the most important is to realize the driving problem of an MOS (metal oxide semiconductor) tube of the charging unit, and a magnetic isolation driving circuit capable of realizing large duty ratio output is designed due to the limitation of the application of an optical coupler in space application;
3) the pulse generating circuit outputs a pulse signal by adopting the MCU, and then realizes the isolation with the MCU in a digital magnetic isolation mode, thereby ensuring the reliable work of the MCU against strong electromagnetic interference;
4) when the input voltage is the voltage within the preset range, the output realizes pulse constant current output, the power supply problem of the laser with the pulse output power larger than 4.5kW is met, and the power supply problem of the space pulse laser with high quality (high efficiency, low ripple, high reliability and the like) is solved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
Fig. 1 is a schematic circuit diagram of a space microsecond level pulse power supply circuit provided by the invention.
Fig. 2 is a driving circuit of a first switching tube in a charging unit of the space microsecond level pulse power supply circuit provided by the invention.
Fig. 3 is a schematic diagram of a pulse driving circuit of a pulse shaping unit of the space microsecond level pulse power supply circuit provided by the invention.
Fig. 4 is a schematic circuit diagram of a current stabilizing circuit of a pulse shaping unit of the space microsecond level pulse power supply circuit provided by the invention.
Wherein the reference numerals in the figures correspond to:
1-a first driving circuit, 2-a second driving circuit, 3-a first switch tube, 4-a second switch tube, 5-a third switch tube, 6-a fourth switch tube, 7-a fifth switch tube, 8-a first diode, 9-a second diode, 10-a third diode, 11-a fourth diode, 12-a first capacitor, 13-a second capacitor, 14-a third capacitor, 15-a fourth capacitor, 16-a fifth capacitor, 17-a first triode, 18-a second triode, 19-a totem pole circuit unit, 20-an isolation transformer, 21-a digital isolator, 22-a first resistor, 23-a second resistor, 24-a third resistor, 25-a fourth resistor, 26-a fifth resistor, 27-a sixth resistor, 28-seventh resistor, 29-eighth resistor, 30-ninth resistor, 31-tenth resistor, 32-eleventh resistor, 33-pulse width modulator, 34-feedback controller, 35-differential amplifier, 36-inductor, 37-sampling resistor, 38-analog PI controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a space microsecond pulse power supply circuit which is used in a space strong electromagnetic radiation interference environment, outputs when the input voltage is within a preset range to realize pulse constant current output, and meets the requirement of laser power supply with pulse output power larger than 4.5kW so as to solve the problem of high-quality power supply of a space pulse laser.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In this embodiment, referring to fig. 1 to 4, a space microsecond pulse power supply circuit includes an energy storage unit, a charging unit, and a pulse shaping unit, where the energy storage unit has an input end and an output end, the charging unit includes a BUCK topology circuit and a first driving circuit 1, a first switch tube 3 is disposed in the BUCK topology circuit, the output end of the first driving circuit 1 is electrically connected to the first switch tube 3, an isolation transformer 20 is disposed in the first driving circuit 1, the isolation transformer 20 is used for magnetic isolation of the first driving circuit 1, the output end of the BUCK circuit is electrically connected to the input end of the energy storage unit, the pulse shaping unit includes a diode group, a second switch tube 4, and a second driving circuit, the second driving circuit includes a current stabilizing circuit and a pulse driving circuit 2, a first end of the output end of the energy storage unit is electrically connected to one end of the diode group, and the other end of the diode group is electrically connected to one end of the input end of the current stabilizing circuit through the, the other end of the input end of the current stabilizing circuit is electrically connected with the second end of the output end of the energy storage unit, the output end of the current stabilizing circuit and the output end of the pulse driving circuit 2 are both electrically connected with the second switch tube 4, the current stabilizing circuit is used for enabling the second switch tube 4 to stably work in a linear amplification area, a digital isolator 21 is arranged in the pulse driving circuit 2, and the digital isolator 21 is used for digital magnetic isolation of the pulse driving circuit 2.
The BUCK circuit further comprises a first capacitor 12, a first diode 8 and an inductor 36, the first switch tube 3 is an MOS field effect transistor, the first capacitor 12 is connected with the input end of the charging unit in parallel, the first diode 8 and the first capacitor 12 are connected with the source electrode and the drain electrode of the first switch tube 3 in parallel, the cathode of the first diode 8 is electrically connected with the first ends of the first switch tube 3 and the inductor 36 respectively, the second end of the inductor 36 is electrically connected with the first end of the input end of the energy storage unit, and the anode of the first diode 8 is electrically connected with the second end of the input end of the energy storage unit. The charging unit adopts a BUCK topological circuit capable of operating in a no-load mode, the most important point is to realize the driving problem of a first switching tube of the charging unit, the application of an optical coupler is limited in space application, and the designed first driving circuit is a magnetic isolation driving circuit capable of realizing large duty ratio output.
The charging unit further comprises a pulse width modulator 33 and a feedback controller 34, an input terminal of the feedback controller 34 being electrically connected to the second terminal, the pulse width modulator 33 being electrically connected to an output terminal of the feedback controller 34, the pulse width modulator 33 being electrically connected to an input terminal of the first driving circuit 1.
The first driving circuit 1 further includes a totem-pole circuit unit 19, a third resistor 24, a fourth resistor 25, a fifth resistor 26, a sixth resistor 27, a seventh resistor 28, a third switching tube 5, a third capacitor 14, a fourth capacitor 15, a fourth diode 11 and a third diode 10, the totem-pole circuit unit 19 includes a first end, a second end and a third end, the first end of the totem-pole circuit unit 19 is electrically connected to the output end of the pulse width modulator 33, the second end of the totem-pole circuit unit 19 is electrically connected to the power supply, the third end of the totem-pole circuit unit 19 is electrically connected to one end of the third resistor 24, two ends of the third capacitor 14 are respectively electrically connected to the other end of the third resistor 24 and one end of the original side of the isolation transformer 20, the other end of the original side of the isolation transformer 20 is grounded, the secondary side of the isolation transformer 20 is provided with a high voltage end, a medium voltage end and a low voltage end, the high voltage end of the secondary side of the isolation transformer 20 is electrically connected to the first end of the fifth resistor 26 through, the second end of the fifth resistor 26 is electrically connected to the drain of the third switching tube 5, the source of the third switching tube 5 is electrically connected to the medium voltage end of the isolation transformer 20, the gate of the third switching tube 5 is electrically connected to the low voltage end of the isolation transformer 20 through the fourth resistor 25, the anode of the fourth diode 11 is electrically connected to the medium voltage end of the isolation transformer 20, the cathode of the fourth diode 11 is electrically connected to the first end of the fifth resistor 26, both ends of the sixth resistor 27 are electrically connected to the cathode of the fourth diode 11 and one end of the seventh resistor 28, respectively, the other end of the seventh resistor 28 is electrically connected to the anode of the fourth diode 11, the third diode 10 is connected to the seventh resistor 28 in parallel, and the cathode of the third diode 10 is electrically connected to the sixth resistor 27. The transformation ratio of the isolation transformer 20 is 1:1.3: 1.3.
The current stabilizing circuit comprises a sampling resistor 37, a differential amplifier 35 and an analog P I controller 38, two ends of the sampling resistor 37 are electrically connected with the second end of the output end of the energy storage unit and the second switch tube 4 respectively, the input end of the differential amplifier 35 is electrically connected with two ends of the sampling resistor 37, the analog PI controller 38 is provided with a first input end and a second input end, the first input end of the analog PI controller 38 is electrically connected with the output end of the differential amplifier 35, the second input end of the analog PI controller 38 is used for accessing a reference signal, and the output end of the analog PI controller 38 is electrically connected with the second switch tube 4. As shown in fig. 4, fig. 4 is a schematic circuit diagram of a current regulator circuit, including a differential amplifier and a feedback controller. Sampling the output pulse current by adopting a shunt resistor, then amplifying by adopting an operational amplifier, and carrying out negative feedback control on the feedback quantity by adopting an analog PI control circuit to realize the control of the pulse output current.
The pulse driving circuit 2 further includes an eighth resistor 29, a ninth resistor 30, a tenth resistor 31, an eleventh resistor 32, a fifth capacitor 16, a fourth switch tube 6 and a fifth switch tube 7, an input end of the digital isolator 21 is used for receiving a bit machine pulse signal, one end of an output end of the digital isolator 21 is electrically connected with a first end of the ninth resistor 30, a second end of the ninth resistor 30 is electrically connected with a first end of the tenth resistor 31, a second end of the tenth resistor 31 is electrically connected with the other end of the output end of the digital isolator 21, one end of the eighth resistor 29 is electrically connected with a first end of the ninth resistor 30, the other end of the eighth resistor 29 is used for receiving a power supply, a first end of the ninth resistor 30 is electrically connected with one end of the eleventh resistor 32 and a gate of the fifth switch tube 7, the other end of the eleventh resistor 32 is grounded, a source of the fifth switch tube 7 is grounded, a drain of the fifth switch tube 7 is used for receiving a reference voltage, the fifth capacitor 16 is connected in parallel with the tenth resistor 31, the gate of the fourth switching tube 6 is electrically connected to the second end of the ninth resistor 30, the source of the fourth switching tube 6 is electrically connected to the second end of the tenth resistor 31 and grounded, and the drain of the fourth switching tube 6 is electrically connected to the second switching tube 4. The upper computer is adopted to output pulse signals, then the isolation with the upper computer is realized in a digital magnetic isolation mode, the reliable work of the upper computer against strong electromagnetic interference is ensured, and then the formation of pulses is realized through 2 MOS field effect transistors.
The diode group comprises a second diode 9 and a pulse laser, wherein the anode of the second diode 9 is electrically connected with the drain electrode of the second switch tube 4, the cathode of the second diode 9 is electrically connected with the first end of the output end of the energy storage unit, the anode of the pulse laser is electrically connected with the cathode of the second diode 9, and the cathode of the pulse laser is electrically connected with the anode of the second diode 9.
The energy storage unit is a second capacitor 13.
The totem pole circuit unit 19 comprises a first resistor 22, a second resistor 23, a first triode 17 and a second triode 18, wherein two ends of the first resistor 22 are respectively electrically connected with the output end of the pulse width modulator 33 and the base electrode of the first triode 17, the collector electrode of the first triode 17 is electrically connected with one end of the second resistor 23, the other end of the second resistor 23 is used for connecting a power supply source, the emitter electrode of the first triode 17 is electrically connected with the emitter electrode of the second triode 18 and one end of the third resistor 24, the base electrode of the second triode 18 is electrically connected with the base electrode of the first triode 17, and the collector electrode of the second triode 18 is grounded.
The working process of the circuit provided by the invention is as follows:
firstly, the charging unit charges the voltage of the energy storage unit from zero to a set voltage, the charging unit stops working, and the set voltage is greater than the threshold voltage of the pulse laser load; then, the pulse shaping unit starts to work, and after a pulse driving current is sent out, the voltage of the energy storage unit is still larger than the threshold voltage of the pulse laser. Then, in the pulse discharging gap, the charging unit continues to work, after the voltage of the energy storage capacitor is charged to the set voltage, the preceding stage charging unit stops working, and the energy lost by the pulse discharging of the energy storage capacitor is supplemented.
The space microsecond level pulse power supply circuit is used in a space strong electromagnetic radiation interference environment, energy flows in series through the charging unit, the energy storage unit and the pulse shaping unit to supply constant current to the laser, and the voltage difference between the capacitor and the laser is consumed by the MOS tube working in a linear region; the charging unit is used for supplementing energy of the energy storage unit in a pulse gap, the charging unit adopts a BUCK topological circuit capable of running in a no-load mode, the most important is to realize the driving problem of an MOS (metal oxide semiconductor) tube of the charging unit, and a magnetic isolation driving circuit capable of realizing large duty ratio output is designed due to the limitation of the application of an optical coupler in space application; the pulse generating circuit outputs a pulse signal by adopting the MCU, and then realizes the isolation with the MCU in a digital magnetic isolation mode, thereby ensuring the reliable work of the MCU against strong electromagnetic interference; when the input voltage is the voltage within the preset range, the output realizes pulse constant current output, the power supply problem of the laser with the pulse output power larger than 4.5kW is met, and the power supply problem of the space pulse laser with high quality (high efficiency, low ripple, high reliability and the like) is solved.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (7)

1. A space microsecond pulse power supply circuit is characterized by comprising:
the energy storage unit is provided with an input end and an output end;
the charging unit comprises a BUCK topological circuit and a first driving circuit (1), a first switch tube (3) is arranged in the BUCK topological circuit, the output end of the first driving circuit (1) is electrically connected with the first switch tube (3), an isolation transformer (20) for magnetic isolation is arranged in the first driving circuit (1), and the output end of the BUCK circuit is electrically connected with the input end of the energy storage unit;
a pulse shaping unit comprising a diode group, a second switching tube (4) and a second drive circuit, the second driving circuit comprises a current stabilizing circuit and a pulse driving circuit (2), the first end of the output end of the energy storage unit is electrically connected with one end of the diode group, the other end of the diode group is electrically connected with one end of the input end of the current stabilizing circuit through the second switch tube (4), the other end of the input end of the current stabilizing circuit is electrically connected with the second end of the output end of the energy storage unit, the output end of the current stabilizing circuit and the output end of the pulse driving circuit (2) are both electrically connected with the second switch tube (4), the current stabilizing circuit is used for enabling the second switching tube (4) to stably work in a linear amplification area, a digital isolator (21) for digital magnetic isolation is arranged in the pulse driving circuit (2);
the BUCK circuit further comprises a first capacitor (12), a first diode (8) and an inductor (36), the first switch tube (3) is an MOS field effect transistor, the first capacitor (12) is connected with the input end of the charging unit in parallel, the first diode (8) is connected with the first capacitor (12) in parallel through the source electrode and the drain electrode of the first switch tube (3), the cathode of the first diode (8) is electrically connected with the first switch tube (3) and the first end of the inductor (36) respectively, the second end of the inductor (36) is electrically connected with the first end of the input end of the energy storage unit, and the anode of the first diode (8) is electrically connected with the second end of the input end of the energy storage unit;
the first driving circuit (1) further comprises a totem-pole circuit unit (19), a third resistor (24), a fourth resistor (25), a fifth resistor (26), a sixth resistor (27), a seventh resistor (28), a third switching tube (5), a third capacitor (14), a fourth capacitor (15), a fourth diode (11) and a third diode (10);
the charging unit further comprises a pulse width modulator (33) and a feedback controller (34), wherein an input end of the feedback controller (34) is electrically connected with the second end, the pulse width modulator (33) is electrically connected with an output end of the feedback controller (34), and the pulse width modulator (33) is electrically connected with an input end of the first driving circuit (1);
the totem-pole circuit unit (19) comprises a first end, a second end and a third end, the first end of the totem-pole circuit unit (19) is electrically connected with the output end of the pulse width modulator (33), the second end of the totem-pole circuit unit (19) is used for being electrically connected with a power supply, the third end of the totem-pole circuit unit (19) is electrically connected with one end of the third resistor (24), two ends of the third capacitor (14) are respectively electrically connected with the other end of the third resistor (24) and one end of the original side of the isolation transformer (20), the other end of the original side of the isolation transformer (20) is grounded, a high-voltage end, a medium-voltage end and a low-voltage end are arranged on the secondary side of the isolation transformer (20), the high-voltage end of the secondary side of the isolation transformer (20) is electrically connected with the first end of the fifth resistor (26) through the fourth capacitor (15), a second end of the fifth resistor (26) is electrically connected to a drain of the third switching tube (5), a source of the third switching tube (5) is electrically connected to a medium-voltage end of the isolation transformer (20), a gate of the third switching tube (5) is electrically connected to a low-voltage end of the isolation transformer (20) through the fourth resistor (25), an anode of the fourth diode (11) is electrically connected to the medium-voltage end of the isolation transformer (20), a cathode of the fourth diode (11) is electrically connected to a first end of the fifth resistor (26), two ends of the sixth resistor (27) are respectively electrically connected to a cathode of the fourth diode (11) and one end of the seventh resistor (28), another end of the seventh resistor (28) is electrically connected to an anode of the fourth diode (11), the third diode (10) is connected in parallel to the seventh resistor (28), and a cathode of the third diode (10) is electrically connected to the sixth resistor (28) 27) And (6) electrically connecting.
2. A space microsecond pulse supply circuit according to claim 1, characterized in that the transformation ratio of said isolation transformer (20) is 1:1.3: 1.3.
3. A space microsecond level pulse power supply circuit according to claim 1, the current stabilizing circuit comprises a sampling resistor (37), a differential amplifier (35) and an analog PI controller (38), two ends of the sampling resistor (37) are respectively and electrically connected with the second end of the output end of the energy storage unit and the second switch tube (4), the input end of the differential amplifier (35) is electrically connected with two ends of the sampling resistor (37), the analog PI controller (38) is provided with a first input end and a second input end, the first input end of the analog PI controller (38) is electrically connected with the output end of the differential amplifier (35), the second input end of the analog PI controller (38) is used for accessing a reference signal, and the output end of the analog PI controller (38) is electrically connected with the second switch tube (4).
4. A space microsecond level pulse power supply circuit according to claim 1, characterized in that said pulse driving circuit (2) further comprises an eighth resistor (29), a ninth resistor (30), a tenth resistor (31), an eleventh resistor (32), a fifth capacitor (16), a fourth switch tube (6) and a fifth switch tube (7),
the input end of the digital isolator (21) is used for accessing a lower computer pulse signal, one end of the output end of the digital isolator (21) is electrically connected with the first end of the ninth resistor (30), the second end of the ninth resistor (30) is electrically connected with the first end of the tenth resistor (31), the second end of the tenth resistor (31) is electrically connected with the other end of the output end of the digital isolator (21), one end of the eighth resistor (29) is electrically connected with the first end of the ninth resistor (30), the other end of the eighth resistor (29) is used for being connected with a power supply, the first end of the ninth resistor (30) is respectively electrically connected with one end of the eleventh resistor (32) and the grid electrode of the fifth switch tube (7), the other end of the eleventh resistor (32) is grounded, and the source electrode of the fifth switch tube (7) is grounded, the drain electrode of the fifth switch tube (7) is used for connecting a reference voltage, the fifth capacitor (16) is connected with the tenth resistor (31) in parallel, the grid electrode of the fourth switch tube (6) is electrically connected with the second end of the ninth resistor (30), the source electrode of the fourth switch tube (6) is electrically connected with the second end of the tenth resistor (31) and grounded, and the drain electrode of the fourth switch tube (6) is electrically connected with the second switch tube (4).
5. A space microsecond pulse supply circuit according to claim 1, wherein said diode group comprises a second diode (9) and a pulse type laser, an anode of said second diode (9) is electrically connected to a drain of said second switching tube (4), a cathode of said second diode (9) is electrically connected to a first end of an output terminal of said energy storage unit, an anode of said pulse type laser is electrically connected to a cathode of said second diode (9), and a cathode of said pulse type laser is electrically connected to an anode of said second diode (9).
6. A space microsecond pulse supply circuit according to claim 1, characterized in that said energy storage unit is a second capacitor (13).
7. A space microsecond pulse power supply circuit according to claim 1, wherein the totem pole circuit unit (19) comprises a first resistor (22), a second resistor (23), a first transistor (17) and a second transistor (18), two ends of the first resistor (22) are electrically connected with the output end of the pulse width modulator (33) and the base of the first transistor (17), the collector of the first transistor (17) is electrically connected with one end of the second resistor (23), the other end of the second resistor (23) is used for connecting a power supply source, the emitter of the first transistor (17) is electrically connected with the emitter of the second transistor (18) and one end of the third resistor (24), the base of the second transistor (18) is electrically connected with the base of the first transistor (17), the collector of the second triode (18) is grounded.
CN201911311870.XA 2019-12-18 2019-12-18 Space microsecond level pulse power supply circuit Active CN111130344B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911311870.XA CN111130344B (en) 2019-12-18 2019-12-18 Space microsecond level pulse power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911311870.XA CN111130344B (en) 2019-12-18 2019-12-18 Space microsecond level pulse power supply circuit

Publications (2)

Publication Number Publication Date
CN111130344A CN111130344A (en) 2020-05-08
CN111130344B true CN111130344B (en) 2021-06-04

Family

ID=70499869

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911311870.XA Active CN111130344B (en) 2019-12-18 2019-12-18 Space microsecond level pulse power supply circuit

Country Status (1)

Country Link
CN (1) CN111130344B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115566523B (en) * 2022-10-24 2023-04-28 深圳市中图仪器股份有限公司 Multi-element circuit coupled laser power supply system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102594101A (en) * 2012-02-16 2012-07-18 江苏大学 Isolated rapid turn-off metal oxide field effect transistor (MOFET) driving circuit
JP6772637B2 (en) * 2016-08-01 2020-10-21 株式会社島津製作所 Semiconductor light emitting element drive circuit
CN110137793B (en) * 2018-02-09 2020-11-13 舜宇光学（浙江）研究院有限公司 Adjustable range driving system and driving method and application thereof
CN108649932A (en) * 2018-05-21 2018-10-12 上海空间电源研究所 The adjustable transformer isolation driving method of space wide scope duty ratio
CN208836102U (en) * 2018-10-11 2019-05-07 扬州大学 A kind of MOSFET driving circuit based on pulse transformer isolation
CN109378706B (en) * 2018-12-14 2020-08-14 绵阳昱东电子科技有限公司 Semiconductor laser high peak power energy supply constant current pulse driving power supply
CN109617040A (en) * 2018-12-24 2019-04-12 出门问问信息科技有限公司 A kind of power supply circuit
CN209448213U (en) * 2019-03-14 2019-09-27 广州市大美电子科技有限公司 A kind of drive control device of semiconductor laser
CN110048605B (en) * 2019-04-04 2021-09-10 上海空间电源研究所 High-power laser constant current source drive circuit

Also Published As

Publication number Publication date
CN111130344A (en) 2020-05-08

Similar Documents

Publication Publication Date Title
CN101552554B (en) Control circuit of cascade type buck-boost converter and control method thereof
CN102255489B (en) High-voltage start-up circuit for switching power supply converter
CN105978325B (en) Non-isolation type single magnetic core three-port DC converter
US11768276B2 (en) Laser emitting circuit and lidar
CN103633839A (en) Improved Z-source boosting DC (direct current)-DC converter
CN111130344B (en) Space microsecond level pulse power supply circuit
CN102751866A (en) High-gain DC (Direct Current)-DC boost converter applicable to photovoltaic generation system
CN103066841A (en) Voltage-multiplying DC converter based on charge pump capacitor
CN104038049B (en) The integrated current transformer of non-isolation type three port connection in series-parallel
CN207368879U (en) A kind of quasi- boost switching DC/DC converters of the high-gain of low voltage stress
CN116418319A (en) Polarity-adjustable high-voltage pulse generator
CN115333379A (en) Series double flyback converter applied to electric power product
CN103001529A (en) Surge voltage generator
CN103414349A (en) Servo driver power module and servo driver
CN102710126B (en) High-gain type step-up direct current converter
CN209982344U (en) Circuit for realizing magnetic isolation feedback and independent secondary power supply
CN103633833A (en) Single-switching-tube converter Boost-Buck-Boost converter
Zhou et al. Optically-coupled Switched-mode Converter for Smartphons Wireless Charging Application
CN202353474U (en) Voltage transformation circuit for normal shock design in fly-back topology
CN215646612U (en) Low-power switching power supply
CN102420529A (en) Voltage conversion circuit for forward design of auxiliary winding in flyback topology
CN203085963U (en) Power source for transverse-flow CO2 laser
CN221328816U (en) High-frequency Gao Xiaochang pulse width multi-turn linear transformer driving source
CN118017840B (en) Quick response BUCK DC-DC conversion circuit
CN115395638B (en) High formwork gateway hybrid power supply system and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant