CN115276429A - High-voltage power supply driving circuit - Google Patents

High-voltage power supply driving circuit Download PDF

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Publication number
CN115276429A
CN115276429A CN202210988708.7A CN202210988708A CN115276429A CN 115276429 A CN115276429 A CN 115276429A CN 202210988708 A CN202210988708 A CN 202210988708A CN 115276429 A CN115276429 A CN 115276429A
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CN
China
Prior art keywords
resistor
voltage
circuit
capacitor
pin
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Pending
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CN202210988708.7A
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Chinese (zh)
Inventor
何四喜
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Shenzhen Hetaiyun Intelligent Technology Co ltd
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Shenzhen Hetaiyun Intelligent Technology Co ltd
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Priority to CN202210988708.7A priority Critical patent/CN115276429A/en
Publication of CN115276429A publication Critical patent/CN115276429A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0012—Control circuits using digital or numerical techniques
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • 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
    • H02M1/0095—Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2176—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

The invention discloses a high-voltage power supply driving circuit, which relates to the technical field of power supply application and comprises the following components: the device comprises an AC-DC voltage reduction circuit, a plurality of voltage reference circuits, a voltage stabilizing circuit, an MCU control circuit, a high-voltage start-stop control circuit, a ZVS voltage boosting circuit, a voltage and current feedback circuit, a segmented current setting circuit, a segmented voltage setting circuit and a sampling circuit. The application is a high-voltage output power supply circuit of intelligent accurate control, make traditional high pressure dust removal power can be by accurate control output voltage and electric current, make the output that can hierarchical accurate timing control voltage and electric current, thereby can use high pressure striking sparks to draw arc current voltage to need by accurate control field and high accuracy, intelligent high voltage power supply application, this application can realize inside external voltage automatic adjustment, optimize energy consumption, realize the advantage of accurate control, simultaneously because control loop is short, and is controlled, the component is few, the price/performance ratio is greatly promoted.

Description

High-voltage power supply driving circuit
Technical Field
The invention relates to the technical field of power supply application, in particular to a high-voltage power supply driving circuit.
Background
The high-voltage power supply application field is developed through years of development, and the common high-voltage power supply technology is developed, but along with higher and higher requirements on products, reliability, high precision, intellectualization and high cost performance become urgent practical requirements, and the high-voltage power supply application field is also an important research direction.
Disclosure of Invention
The present invention is directed to a high voltage power driving circuit to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a high voltage power supply driver circuit comprising: an AC-DC voltage reduction circuit, a plurality of voltage reference circuits, a voltage stabilizing circuit, an MCU control circuit, a high-voltage start-stop control circuit, a ZVS voltage boosting circuit, a voltage and current feedback circuit, a sectional current setting circuit, a sectional voltage setting circuit and a sampling circuit,
the output end of the AC-DC voltage reduction circuit is respectively connected with the input ends of various voltage reference circuits, the input end of the voltage stabilizing circuit and the power supply input end of the ZVS voltage boosting circuit, and the feedback input end of the AC-DC voltage reduction circuit is respectively connected with the output ends of the various voltage reference circuits and the output end of the voltage current feedback circuit;
the voltage setting ends of the various voltage reference circuits are connected with the output end of the high-voltage start-stop control circuit;
the output end of the voltage stabilizing circuit is connected with the power input end of the MCU control circuit;
the signal input end of the MCU control circuit is connected with the output end of the sampling circuit, the output 1 end of the MCU control circuit is connected with the input end of the high-voltage start-stop control circuit, the output 2 end of the MCU control circuit is connected with the input end of the segmented current setting circuit, and the output 3 end of the MCU control circuit is connected with the input end of the segmented voltage setting circuit;
the output end of the high-voltage start-stop control circuit is connected with the GND end of the ZVS booster circuit;
the current feedback setting end of the ZVS booster circuit is connected with the output end of the segmented current setting circuit, and the voltage feedback setting end of the ZVS booster circuit is connected with the output end of the segmented voltage setting circuit;
the current input end of the voltage and current feedback circuit is connected with the current feedback end of the segmented current setting circuit, and the voltage input end of the voltage and current feedback circuit is connected with the voltage feedback end of the segmented voltage setting circuit;
and the input end of the sampling circuit is connected with the voltage feedback setting end of the ZVS booster circuit.
As a further scheme of the invention: the AC-DC voltage reduction circuit comprises an AC line CN1, wherein an ACL end of the AC line CN1 is connected with one end of a fuse F1, an ACN end of the AC line CN1 is connected with one end of a piezoresistor RV1, one end of an X capacitor CX1 and an AC second input end of a bridge stack BD1, the other end of the fuse F1 is connected with the other end 1 of the piezoresistor RV, the other end of the X capacitor CX1 and the AC first input end of the bridge stack BD1, a cathode of the bridge stack BD1 is grounded, an anode of the bridge stack BD1 is connected with an anode end of an electrolytic capacitor EC1, a capacitor C1, a resistor R1 and a first end of a transformer T1, the other end of the electrolytic capacitor EC1 is grounded, the other end of the capacitor C1 is connected with the other end of a resistor R1, the other end of the resistor R1 is connected with a resistor R2, and the other end of the resistor R2 is connected with a cathode of a diode D5, the anode of the diode D5 is connected with the 5 th pin of the power driving chip U1, the 6 th pin of the power driving chip U1, the 7 th pin of the power driving chip U1, the 8 th pin of the power driving chip U1 and the 3 rd end of the transformer T1, the 1 st pin and the 2 nd pin of the power driving chip U1 are grounded, the 4 th pin of the power driving chip U1 is connected with the output ends of the electrolytic capacitor EC4 and the various voltage reference circuits, the other end of the electrolytic capacitor EC4 is grounded, the 3 rd pin of the power driving chip U1 is connected with the output ends of the various voltage reference circuits, the 10 th end of the transformer T1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the electrolytic capacitor EC2, the TVS1 tube and the power supply VDD end, and the 8 th end of the transformer T1, the other end of the electrolytic capacitor EC2 and the other end of the TVS1 tube are grounded.
As a still further scheme of the invention: multiple voltage reference circuit includes zener diode D6, zener diode D6's negative pole is connected with power VDD, zener diode D6's positive pole is connected with resistance R7, resistance R7's other end connecting resistance R12 and opto-coupler U2's 1 foot, opto-coupler U2's 2 feet connecting resistance R12's the other end, voltage current feedback circuit's output and diode D7, 4 pins of opto-coupler U2's 4 feet connection power drive chip U1, 3 pins of opto-coupler U2's 3 feet connection power drive chip U1, diode D7's other end connecting resistance R24 and voltage reference IC U3 output are connected, electric capacity C8 is connected to the resistance R24 other end, C8 other end connecting resistance R23, resistance R34, resistance R33 and voltage reference IC U3's sample terminal, voltage reference IC U3's GND end ground connection, resistance R23's the other end connecting power supply, resistance R34's the other end ground connection, diode D33's the other end connecting diode D8, the output that stops high-voltage control circuit VDD is opened to the connection of D8.
As a still further scheme of the invention: the voltage stabilizing circuit comprises a resistor R36, one end of the resistor R36 is connected with a power supply VDD, the other end of the resistor R36 is connected with a diode D9 and a capacitor C9, the other end of the diode D9 is connected with pins 3 of an electrolytic capacitor EC5 and a voltage stabilizing IC U4, pin 2 of the voltage stabilizing IC U4 is connected with an electrolytic capacitor EC6, a capacitor C10 and a power supply VCC, and the other ends of the capacitor C9, the electrolytic capacitor EC5, pin 1 of the voltage stabilizing IC U4, the electrolytic capacitor EC6 and the capacitor C10 are grounded.
As a still further scheme of the invention: the MCU control circuit comprises a capacitor C15, one end of the capacitor C15 is grounded, the other end of the capacitor C15 is connected with 18 pins of a power supply VCC, a TVS4 and a single chip microcomputer U8, the other end of the TVS4 is grounded, 13 pins, 11 pins, 10 pins, 1 pin, 2 pins and 8 pins of the single chip microcomputer U8 are grounded, and the single chip microcomputer U8 is connected with a high-voltage start-stop control circuit, a segmented current setting circuit, a segmented voltage setting circuit, a sampling circuit and a voltage stabilizing circuit.
As a still further scheme of the invention: the high-voltage start-stop control circuit comprises a resistor R13, the resistor R13 is connected with a pin 9 of a single chip microcomputer U8, the other end of the resistor R13 is connected with a resistor R16 and a triode Q4, the other end of the resistor R16 is grounded, an E pole base of the triode Q4, a C pole of the triode Q4 is connected with a resistor R14, a resistor R8 and a G pole of an MOS (metal oxide semiconductor) tube Q3, the other end of the resistor R14 is grounded, the other end of the resistor R8 is connected with a power supply VDD, an S pole of the MOS tube Q3 is grounded, and a D pole of the MOS tube Q3 is connected with various voltage reference circuits and a ZVS booster circuit.
As a still further scheme of the invention: the ZVS booster circuit comprises an electrolytic capacitor EC3, the electrolytic capacitor EC3 is connected with a diode D1 and an inductor L1, the other end of the inductor L1 is connected with a resistor R3, a resistor R5 and a central tap 3 pin of a transformer TF1, the other end of the resistor R3 is connected with a power auxiliary winding 6 pin of the transformer TF1 and a base electrode of a triode Q1, the other end of the electrolytic capacitor EC3 is connected with various voltage reference circuits, a high-voltage start-stop circuit, an emitting electrode of the triode Q1 and an emitting electrode of the triode Q2, a collector electrode of the triode Q1 is connected with a capacitor C4 and a 5 pin of the transformer TF1, the other end of the resistor R5 is connected with a base electrode and a resistor R6 of the triode Q2, a collector electrode of the triode Q2 is connected with the other end of the capacitor C4 and a 2 pin of the transformer TF1, the other end of the resistor R6 is connected with a 1 pin of the transformer TF1, a high-voltage winding 7 pin of the transformer TF1 is connected with a capacitor C2 and a diode D4, the other end of the capacitor C2 is connected with a diode D3 and a high-voltage grounding wire of the transformer TF 3, and the other end of the capacitor TF 3 are connected with a diode D8, and a grounding wire of the diode D3.
As a still further scheme of the invention: the voltage and current feedback circuit comprises a diode D10 and a diode D12, the diode D10 and the diode D12 are connected to the other end of a resistor R12, the other end of the diode D10 is connected with a capacitor C11 and a pin 1 of an operational amplifier IC U5, the other end of the capacitor C11 is connected with a resistor R39, the other end of the resistor R39 is connected with a pin 2 of the operational amplifier IC U5 and a resistor R38, and the other end of the resistor R38 is connected with a segmented voltage setting circuit; diode D12's the other end is connected 1 foot and electric capacity C16 that IC U7 was put to fortune, electric capacity C16's other end connecting resistance R45, 2 feet and resistance R43 that IC U7 was put to fortune is connected to resistance R45's the other end, resistance R43 connects the segmentation electric current and sets up the circuit, IC U7's 4 feet ground connection is put to fortune, power VDD and electric capacity C14 are connected to fortune 8 feet of IC U7, electric capacity C14's other end ground connection, IC U5's 3 feet connecting resistance R35 and resistance R34 are put to fortune, power VDD is connected to resistance R35's the other end, adjustable resistance VR2 is connected to resistance R40's the other end, adjustable resistance VR 2's the other end is connected with power amplifier IC U7's 3 feet and resistance R44, resistance R44 ground connection.
As a still further scheme of the invention: the segmented current setting circuit comprises an HIB end, the HIB end is connected with the other side of a resistor R43, the other end of the resistor HIB end is connected with a resistor R17, a resistor R18, a resistor R19, a resistor R20, a capacitor C7, a resistor R21, a resistor R22 and a resistor R9, the other end of the resistor R9 is connected with a TVS3 and a leading-out end LN2, the other ends of the resistor R22, the resistor R21 and the capacitor C7 are grounded, the other ends of the resistor R19 and the resistor R20 are connected with a D pole of an MOS tube Q6, the S pole of the MOS tube Q6 is grounded, the G pole of the MOS tube Q6 is connected with a resistor R28 and a resistor R27, the other end of the resistor R28 is grounded, the other end of the resistor R27 is connected with a pin 3 of a single chip microcomputer U8, the other ends of the resistor R18 and the resistor R17 are connected with a D pole of an MOS can Q5, the S pole of the MOS tube Q5 is grounded, the G pole of the MOS tube Q5 is connected with a resistor R25 and a resistor R26, the other end of the resistor R26 is grounded, and the other end of the resistor R25 is connected with a pin 4 of the single chip microcomputer U8;
the segmented voltage setting circuit comprises an HVB end, the HVB end is connected with the other side of the resistor R38, the HVB end is connected with the inductor L2, the other end of the inductor L2 is connected with the TVS2, the adjustable resistor VR1, the resistor R4, the resistor R10, the resistor R11 and the capacitor C6, the other end of the resistor R4 is connected with the diode D2 and the leading-out end LN1, the other end of the TVS2 is grounded, the other end of the adjustable resistor VR1 is connected with the resistor R15, the other end of the resistor R15 is grounded, the other end of the resistor R10 is connected with the D pole of the MOS transistor Q7, the S pole of the MOS transistor Q7 is grounded, the G pole of the MOS transistor Q7 is connected with the resistor R29 and the resistor R30, the other end of the resistor R30 is grounded, the other end of the resistor R29 is connected with a pin 6 of the singlechip U8, the other end of the resistor R11 is connected with the D pole of the MOS transistor Q8, the S pole of the MOS transistor Q8 is grounded, the G pole of the MOS transistor Q8 is connected with the resistor R32 and the pin of the singlechip is connected with the singlechip.
As a still further scheme of the invention: the sampling circuit comprises a resistor R42, one end of the resistor R42 is connected with an HVB end, the other end of the resistor R42 is connected with a capacitor C13, a diode D11 and a resistor R41, the other ends of the capacitor C13 and the diode D11 are grounded, and the other end of the resistor R41 is connected with a capacitor C12 and a 12-pin of a single chip microcomputer U8.
Compared with the prior art, the invention has the beneficial effects that: the application is a high-voltage output power supply circuit of intelligent accurate control, make traditional high pressure dust removal power can be by accurate control output voltage and electric current, make the output that can hierarchical accurate timing control voltage and electric current, thereby can use high pressure striking sparks to draw arc current voltage to need by accurate control field and high accuracy, intelligent high voltage power supply application, this application can realize inside external voltage automatic adjustment, optimize energy consumption, realize the advantage of accurate control, simultaneously because control loop is short, and is controlled, the component is few, the price/performance ratio is greatly promoted.
Drawings
Fig. 1 is a functional schematic diagram of a high-voltage power supply driving circuit.
Fig. 2 is a schematic diagram of an AC-DC voltage reduction circuit in the high-voltage power supply driving circuit.
FIG. 3 is a schematic diagram of various voltage reference circuits in the high voltage power driving circuit.
FIG. 4 is a schematic diagram of a voltage regulator circuit in a high voltage power driving circuit.
Fig. 5 is a schematic diagram of an MCU control circuit in the high voltage power driving circuit.
Fig. 6 is a schematic diagram of a high-voltage start-stop control circuit in the high-voltage power supply driving circuit.
FIG. 7 is a schematic diagram of a ZVS boost circuit in a high voltage power supply driving circuit.
Fig. 8 is a schematic diagram of a voltage-current feedback circuit in the high-voltage power driving circuit.
Fig. 9 is a schematic diagram of a segment current setting circuit in the high-voltage power driving circuit.
Fig. 10 is a schematic diagram of a segment voltage setting circuit in the high-voltage power driving circuit.
Fig. 11 is a schematic diagram of a sampling circuit in a high-voltage power driving circuit.
Fig. 12 is a schematic diagram of the overall structure of the high-voltage power driving circuit.
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 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.
Referring to fig. 1 to 12, in an embodiment of the present invention, a high voltage power driving circuit includes an AC-DC voltage dropping circuit 1, a multiple voltage reference circuit 2, a voltage stabilizing circuit 3, an mcu control circuit 4, a high voltage start/stop control circuit 5, a zvs voltage boosting circuit 6, a voltage current feedback circuit 7, a segment current setting circuit 8, a segment voltage setting circuit 9, and a sampling circuit 10.
The output end of the AC-DC voltage reduction circuit 1 is connected with the input ends of the various voltage reference circuits 2, the output end of the AC-DC voltage reduction circuit 1 is connected with the input end of the voltage stabilizing circuit, the output end of the AC-DC voltage reduction circuit 1 is connected with the power supply input end of the ZVS voltage boosting circuit 6, and the feedback input end of the AC-DC voltage reduction circuit 1 is connected with the output ends of the various voltage reference circuits 2. The input end of the various voltage reference circuits 2 is connected with the output end of the AC-DC voltage reduction circuit 1, the output end of the various voltage reference circuits 2 is connected with the feedback input end of the AC-DC voltage reduction circuit 1, the voltage setting end 1 of the various voltage reference circuits 2 is connected with the output end of the high-voltage start-stop control circuit 5, and the voltage setting end 2 of the various voltage reference circuits 2 is connected with the output end of the voltage current feedback circuit 7. The input end of the voltage stabilizing circuit 3 is connected with the output end of the AC-DC voltage reducing circuit 1, and the output end of the voltage stabilizing circuit 3 is connected with the power input end of the MCU control circuit 4. The power input end of the MCU control circuit 4 is connected with the output end of the voltage stabilizing circuit, the signal input end of the MCU control circuit 4 is connected with the output end of the sampling circuit, the output end 1 of the MCU control circuit 4 is connected with the input end of the high-voltage start-stop control circuit 5, the output end 2 of the MCU control circuit 4 is connected with the input end of the segmented current setting circuit 8, and the output end 3 of the MCU control circuit 4 is connected with the input end of the segmented voltage setting circuit 8. The input end of the high-voltage start-stop control circuit 5 is connected with the output end 1 of the MCU control circuit 4, the output end of the high-voltage start-stop control circuit 5 is connected with the voltage setting ends of the various voltage reference circuits 2, and the output end of the high-voltage start-stop control circuit 5 is connected with the GND ground end of the ZVS booster circuit 6. The power input end of the ZVS booster circuit 6 is connected with the output end of the AC-DC step-down circuit 1, the GND ground end of the ZVS booster circuit 6 is connected with the output end of the high-voltage start-stop control circuit 5, the current feedback setting end of the ZVS booster circuit 6 is connected with the output end of the segmented current setting circuit 8, and the voltage feedback setting end of the ZVS booster circuit 6 is connected with the output end of the segmented voltage setting circuit 8. The current input end of the voltage and current feedback circuit 7 is connected with the current feedback end of the segmented current setting circuit 8, the electric voltage input end of the voltage and current feedback circuit 7 is connected with the voltage feedback end of the segmented voltage setting circuit, and the output end of the voltage and current feedback circuit 7 is connected with the voltage setting 2 end of the multiple voltage reference circuits 2. The input end of the segmented current setting circuit 8 is connected with the output end 2 of the MCU control circuit 4, the current feedback end of the segmented current setting circuit 8 is connected with the current input end of the voltage current feedback circuit, and the output end of the segmented current setting circuit 8 is connected with the current feedback setting end of the ZVS booster circuit 6. The input end of the segmented voltage setting circuit 9 is connected with the output end 3 of the MCU control circuit 4, the current feedback end of the segmented voltage setting circuit 9 is connected with the voltage input end of the voltage and current feedback circuit 7, and the output end of the segmented voltage setting circuit 9 is connected with the voltage feedback setting end of the ZVS boosting circuit 6. The input end of the sampling circuit 10 is connected with the voltage feedback setting end of the ZVS booster circuit 6, and the output end of the sampling circuit 10 is connected with the signal input end of the MCU control circuit 4. In the application, an AC-DC voltage reduction circuit 1 is utilized to provide a controllable and variable power supply for a subsequent circuit, wherein the output voltage and current are regulated and controlled by an MCU control circuit 4 and a rear-end load, the output power supply is fed back to the AC-DC voltage reduction circuit 1 through a plurality of voltage reference circuits 2, so that the AC-DC voltage reduction circuit 1 provides an initial working voltage, wherein the initial working voltage supplies power to the MCU control circuit 4 through a voltage stabilizing circuit 3 and also supplies power to a ZVS voltage boosting circuit 6, the ZVS voltage boosting circuit 6 works to output an accurate high voltage value within a range of 5000-6000V, a sampling voltage value is set through a segmented voltage setting circuit 9 and a corresponding voltage sampling value is output, one path of the corresponding voltage sampling value is supplied to a sampling circuit 10 and is input to the MCU control circuit 4 after being integrated and limited by the sampling circuit 10, the MCU control circuit 4 judges whether to adjust the current setting through a segmented current setting circuit 8 according to user presetting, or not, a corresponding voltage is set through a segmented voltage setting circuit 9, the corresponding voltage sampling value path passes through a voltage and current feedback circuit 7 to be compared with a plurality of voltage reference circuits 2, the voltage reference circuits 2, and the AC-DC voltage reference circuits 1 and the DC voltage reference circuits 1-DC voltage reduction circuit 1 is corrected and the DC voltage reference circuits to output. And a voltage closed-loop control is formed, and the current closed-loop control consists of a segmented current setting circuit 8, a voltage current feedback circuit 7, a plurality of voltage reference circuits 2 and an AC-DC voltage reduction circuit 1. The MCU control circuit 4 adjusts the current setting through the segmented current setting circuit 8, sets the voltage through the segmented voltage setting circuit 9, and controls the start and stop of the ZVS booster circuit 6 through the high-voltage start and stop control circuit 5.
As a further embodiment of the present application, please refer to fig. 1, fig. 2 and fig. 12, wherein the AC-DC voltage-reducing circuit 1 includes an AC line CN1, an ACL terminal of the AC line CN1 is connected to a first terminal of a fuse F1, a second terminal of the fuse F1 is connected to a first terminal of a voltage dependent resistor RV1, a second terminal of the fuse F1 is simultaneously connected to an AC first input terminal of a bridge stack BD1, an ACN terminal of the AC line CN1 is connected to a second terminal of the voltage dependent resistor RV1, the ACN terminal of the AC line CN1 is connected to an AC second input terminal of the bridge stack BD1, an X capacitor CX1 is connected in parallel to the voltage dependent resistor RV1, an anode terminal of the bridge stack BD1 is connected to an anode terminal of an electrolytic capacitor EC1, an anode terminal of the bridge stack BD1 is simultaneously connected to a first terminal of a capacitor C2, a first terminal of the resistor R1, a first terminal of a transformer T1, a cathode of the electrolytic capacitor EC1 is connected to a high voltage ground, a capacitor nd 2 is connected in parallel to the resistor R1, a second terminal of the capacitor C2 is connected to a first terminal of the resistor R2, the second end of the resistor R2 is connected to the cathode of the diode D5, the anode of the diode D5 is connected with pins 5-8 of the power driving chip U1, the anode of the diode D5 is simultaneously connected to the 3 end of the transformer, pins 1 and 2 of the power driving chip U1 are connected to the HGND high-voltage ground, pin 3 of the power driving chip U1 is an FB signal feedback input end and is connected to the output ends of the various voltage reference circuits 2, the 4-pin power end of the power driving chip U1 is connected with the anode of the electrolytic capacitor EC4 and is also connected to the output ends of the various voltage reference circuits 2, the cathode of the electrolytic capacitor EC4 is connected with the HGND high-voltage ground, pin 10 of the transformer is connected with the anode of the diode D1, pin 8 of the transformer T1 is connected with the GND ground, the cathode of the diode D1 is connected with the anode of the electrolytic capacitor VDD, the cathode of the electrolytic capacitor EC2 is connected with the GND ground, the TVS1 tube is connected with an electrolytic capacitor in parallel, and the anode of the electrolytic capacitor is simultaneously connected with a ZVS booster circuit 6, a voltage stabilizing circuit 3 and a multi-voltage reference circuit 2
As a further embodiment of the present application, please refer to fig. 1, fig. 3 and fig. 12, wherein the multiple voltage reference circuit 2 includes a zener diode D6, a cathode of the zener diode D6 is connected to a DC positive terminal VDD, an anode terminal of the zener diode D6 is connected to a first terminal of a resistor R7, a second terminal of the resistor R7 is connected to a pin 1 of the optocoupler U2, a pin 2 terminal of the optocoupler U2 is connected to an anode terminal of the diode D7 and an output terminal of the voltage current feedback circuit 7, the resistor R12 is connected in parallel to the pin 1 and the pin 2 of the optocoupler U2, a cathode terminal of the diode D7 is connected to an output terminal of the voltage reference IC U3, and a cathode terminal of the diode D7 is simultaneously connected to a first terminal of the resistor R24, the second end of the resistor R24 is connected with the first end of the capacitor C8, the second end of the capacitor C8 is connected with the second end of the resistor R23, the first end of the R33, the first end of the resistor R34 and the sampling end of the voltage reference IC U3, the GND ground end of the voltage reference IC U3 is connected with the GND ground end, the second end of the resistor R34 is connected with the ground, the first end of the resistor R23 is connected with the DC positive end VDD, the second end of the resistor R33 is connected with the anode end of the diode D8, the cathode end of the diode is connected with the output end of the high-voltage start-stop control circuit 5, the pin 3 of the optical coupler U2 is connected with the FB signal feedback end of the AC-DC voltage reduction circuit 1, the pin 4 of the optical coupler U2 is connected with the pin 4 of the electric power supply driving chip U1 in the AC-DC voltage reduction circuit 1
As a further embodiment of the present application, please refer to fig. 1, fig. 4 and fig. 12, wherein the voltage regulator circuit 3 includes a resistor R36, a first end of the resistor R36 is connected to the DC positive terminal VDD, a first end of the resistor R36 is connected to a first end of a capacitor C9 and an anode of a diode D9, a second end of the capacitor C9 is connected to the GND terminal, a cathode of the diode D9 is connected to an anode of an electrolytic capacitor EC5 and a VIN terminal of a regulator IC U4, a cathode of the electrolytic capacitor EC5 is connected to the GND terminal, a GND terminal of the regulator IC U4 is connected to the GND terminal, a voltage output OUT terminal of the regulator IC U4 is connected to an anode of the electrolytic capacitor EC6, a cathode of the electrolytic capacitor EC6 is connected to the GND terminal, the capacitor C10 is connected to the electrolytic capacitor EC6 in parallel, and a voltage output OUT terminal of the regulator IC U4 is connected to a power supply terminal of the MCU control circuit 4
As a further embodiment of the present application, please refer to fig. 1, fig. 5 and fig. 12, wherein the MCU control circuit 4 includes a capacitor C15, a first end of the capacitor C15 is connected to the power VCC, a second end of the capacitor C15 is connected to the GND ground, the TVS4 is connected in parallel to the capacitor C15, a VDD power terminal of the single-chip microcomputer U8MCU is connected to the power VCC, and the MCU is connected to the high voltage start/stop control circuit 5, the segmented current setting circuit 8, the segmented voltage setting circuit 9, the sampling circuit 10 and the voltage stabilizing circuit 3
As a further embodiment of the present application, please refer to fig. 1, fig. 6 and fig. 12, wherein the high voltage start-stop control circuit 5 includes a resistor R13, a first end of the resistor R13 is connected to the MCU control circuit 4, a second end of the resistor R13 is connected to a first end of the resistor R16 and a B pole of the transistor Q4, a second end of the resistor R16 is connected to a GND ground, an E pole of the transistor Q4 is connected to a GND ground, a C pole of the transistor Q4 is connected to a second end of the resistor R8, a first end of the resistor R14 and a G pole of the MOS Q3, a first end of the resistor R8 is connected to the DC power VDD, a second end of the resistor R14 is connected to the GND ground, an S pole of the MOS Q3 is connected to the GND ground, and a D pole of the MOS Q3 is connected to the multiple voltage reference circuits 2 and the ZVS boost circuit 6
As a further embodiment of the present application, please refer to fig. 1, fig. 7 and fig. 12, wherein the ZVS boost circuit 6 includes an electrolytic capacitor EC3, an anode of the electrolytic capacitor EC3 is connected to the DC power VDD, a cathode of the electrolytic capacitor EC3 is connected to the signal ground, a first end of an inductor L1 is connected to the DC power VDD, a second end of the inductor L1 is connected to a pin 3 of a center tap of the transformer TF1, a first end of a resistor R3, and a first end of a resistor R5, a second end of the resistor R3 is connected to a pin 6 of a power auxiliary winding of the transformer TF1 and a base of the transistor Q1, a second end of the resistor R5 is connected to a first end of a resistor R6 and a base of the transistor Q2, a second end of the resistor R6 is connected to a pin 1 of the transformer TF1, a pin 8 of a high-voltage winding of the transformer TF1 is connected to a GND ground end, a pin 7 of the high-voltage winding of the transformer TF1 is connected to an anode of a boost diode D4, a first end of a boost capacitor C2, a cathode of the boost diode is connected with a first end of a capacitor C5, an anode of a diode D3 and a second end of the boost capacitor C3, a second end of the capacitor C5 is connected with the GND ground end, a cathode of the diode D3 is connected with a second end of the boost capacitor C2 and an anode of the boost diode D2, a cathode of the diode D2 is connected with a first end of the boost capacitor C3, a cathode end of the D2 is a high-voltage HV end, and a cathode end of the D2 is connected with an input end of a segmented voltage setting circuit 9
As a further embodiment of the present application, please refer to fig. 1, fig. 8 and fig. 12, wherein the voltage-current feedback circuit 7 includes a resistor R38, a first end of the resistor R38 is connected to the divided-end voltage setting circuit, a second end of the resistor R38 is connected to the pin 2 of the negative input end of the operational amplifier IC U5 and one end of the resistor R39, a second end of the resistor R39 is connected to the first end of the capacitor C11, a second end of the capacitor C11 is connected to the pin 1 of the output end of the operational amplifier IC U5 and the cathode of the diode D10, the pin 3 of the positive input end of the operational amplifier IC U5 is connected to the second end of the resistor R35 and the first end of the resistor R40, the first end of the resistor R35 is connected to the DC power VDD, the second end of the resistor R40 is connected to the first end of the VR2, the second end of VR2 is connected with the adjustable end, the positive input end of operational amplifier U5, the first end of resistance R44, the second end of resistance R44 is connected with GND ground, the first end of resistance R43 is connected with segmented current setting circuit 8, the second end of resistance R43 is connected with the negative input end 6 foot of operational amplifier, the first end of resistance R45, the second end of resistance R45 is connected with the first end of capacitor C16, the second end of circuit C16 is connected with the cathode of diode D12, the anode of D12 is connected with the anode of D10, the anode of D12 is connected with multiple voltage reference circuit 2, the first end of capacitor C14 is connected with the power supply end 8 foot of operational amplifier, the second end of capacitor C14 is connected with GND ground
As a further embodiment of the present application, please refer to fig. 1, fig. 9, fig. 10 and fig. 12, wherein the segmented current setting circuit 8 includes a high-voltage negative output line LN2, a first end of the high-voltage negative output line LN2 is connected to the power output load, a second end of the high-voltage negative output line LN2 is connected to a first end of a resistor R9 and a first end of a transient protection diode TVS3, a second end of the transient protection diode TVS3 is connected to the GND ground, a second end of the resistor R9 is connected to a first end of a resistor R17, a first end of a resistor R18, a first end of a resistor R19, a first end of a resistor R20, a first end of a resistor R21, a first end of a R22, a first end of a capacitor C7 and a current input end of the voltage-current feedback circuit 7, a second end of the C7 is connected to the GND ground, resistor R21, resistor R22 and capacitor C7 are connected in parallel, the second end of resistor R19 is connected with the D pole of MOS transistor Q6, resistor R19 and resistor R20 are connected in parallel, the G pole of MOS transistor Q6 is connected with the second end of resistor R27, the first end of resistor R28 is connected, the S pole of MOS transistor Q6 is connected with ground GND, the second end of resistor R28 is connected with GND ground, the first end of resistor R27 is connected with the current second-gear output end of MCU control circuit 4, the second end of resistor R17 is connected with the D end of MOS transistor Q5, resistor R17 is connected in parallel with resistor R18, the S end of MOS transistor Q5 is connected with GND ground, the G end of MOS transistor Q5 is connected with resistor R25, resistor R26, the second end of resistor R26 is connected with GND ground, the first end of resistor R25 is connected with the current third-gear output end of MCU control circuit 4
The segmented voltage setting circuit 9 comprises a high-voltage positive output line LN1, a first end of the high-voltage positive output line LN1 is connected with a power supply output load, a second end of the high-voltage positive output line LN1 is connected with a first end of a resistor R10, a first end of a resistor R11, a first end of a potentiometer VR1, a first end of a capacitor C6, a first end of a transient protection diode TVS2 and a first end of an inductor L2, a second end of the inductor L2 is connected with an input end of a sampling circuit 10 and a voltage input end of a voltage current feedback circuit 7, a second end of the transient protection diode TVS2 is connected with a GND ground end, the transient protection diode TVS2 is connected with the capacitor C6 in parallel, and a second end of the potentiometer VR1 is connected with an adjustable end, the second end of the potentiometer VR1 is connected to the first end of the resistor R15, the second end of the resistor R15 is connected to the GND ground, the second end of the resistor R11 is connected to the D pole of the MOS transistor Q8, the S pole of the MOS transistor Q8 is connected to the GND ground, the G pole of the MOS transistor Q8 is connected to the resistor R31, the resistor R32 is connected to the GND ground, the first end of the resistor R31 is connected to the second voltage output of the MCU control circuit 4, the second end of the resistor R10 is connected to the D pole of the MOS transistor Q7, the S pole of the MOS transistor Q7 is connected to the GND ground, the G end of the MOS transistor Q7 is connected to the resistor R29 and the resistor R30, the second end of the resistor R30 is connected to the GND ground, the first end of the resistor R29 is connected to the third voltage output of the MCU control circuit 4
As a further embodiment of the present application, please refer to fig. 1, fig. 11 and fig. 12, wherein the sampling circuit 10 includes a resistor R42, a first end of the resistor R42 is connected to the segment voltage setting circuit 9, a second end of the resistor R42 is connected to a first end of a capacitor C13, a first end of a resistor R41 and a cathode of a zener diode D11, a second end of the capacitor C13 is connected to a GND ground, the capacitor C13 is connected to the diode D11 in parallel, a second end of the resistor R41 is connected to a first end of the capacitor C12 and a voltage input detection end of the MCU control circuit 4
The working principle of the invention is as follows: the AC-DC voltage reduction circuit provides a controllable and variable power supply for a subsequent circuit, and the output voltage and current are regulated and controlled by the singlechip U8 and a rear-end load. After being rectified by the diode D1, the output power is fed back to the AC-DC voltage reduction circuit through various voltage reference circuits, so that the AC-DC voltage reduction circuit provides initial working voltage. The initial working voltage supplies power to a single chip microcomputer U8 through a voltage stabilizing circuit, and also supplies power to a ZVS booster circuit, the ZVS booster circuit works to output an accurate high-voltage value in the range of 5000-6000V, a sampling voltage value is set through a segmented voltage setting circuit and a corresponding voltage sampling value is output, one path of the corresponding voltage sampling value is supplied to the sampling circuit, the sampling circuit integrates and limits the voltage value and then inputs the voltage value to an MCU control circuit, and the MCU judges whether to adjust current setting through the segmented current setting circuit or not according to user preset, or sets corresponding voltage through the segmented voltage setting circuit; the other path of the corresponding voltage sampling value is compared with the reference through a voltage and current feedback circuit, the difference is output to various voltage reference circuits, and the various voltage reference circuits feed back the difference control signal to the AC-DC voltage reduction circuit through an optical coupler, so that the AC-DC voltage reduction circuit outputs the corrected voltage and current. And the current closed-loop control consists of a segmented current setting circuit, a voltage current feedback circuit, a plurality of voltage reference circuits and an AC-DC voltage reduction circuit. The MCU control circuit adjusts the current setting through the multistage current setting circuit, sets the voltage through the sectional voltage setting circuit, and controls the start and stop of the ZVS booster circuit through the high-voltage start-stop control circuit. When various voltage reference voltages work normally, reference voltage IC U3 is set through a resistor R33, a diode D8 and a resistor R34, when transient arc-discharge short circuit occurs or a load is overloaded, the voltage of the cathode of the optocoupler diode is pulled down to GND by a voltage and current feedback circuit, a voltage stabilizing tube D6 ensures that the optocoupler forms normal voltage feedback, and the AC-DC voltage reduction circuit outputs normal working voltage of the singlechip U8. And the single chip microcomputer U8 is ensured to output a corresponding control signal, and whether ZVS boosting is closed or voltage and current corresponding gear reduction is carried out on the output, when the single chip microcomputer U8 closes the ZVS boosting circuit through a high-voltage start-stop circuit, in order to reduce power consumption, the resistor R33 and the diode D8 stop working, and the output voltage of the AC-DC voltage reduction circuit is reduced to the maintenance voltage of the single chip microcomputer U8. Realize inside external voltage automatic adjustment, optimize energy consumption, realize accurate control, because control loop is short, controlled, the component is few, and the price/performance ratio obtains greatly promoting.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A high voltage power supply driver circuit, comprising: an AC-DC voltage reduction circuit, a plurality of voltage reference circuits, a voltage stabilizing circuit, an MCU control circuit, a high-voltage start-stop control circuit, a ZVS voltage boosting circuit, a voltage current feedback circuit, a segmented current setting circuit, a segmented voltage setting circuit and a sampling circuit,
the output end of the AC-DC voltage reduction circuit is respectively connected with the input ends of various voltage reference circuits, the input end of a voltage stabilizing circuit and the power supply input end of the ZVS voltage boosting circuit, and the feedback input end of the AC-DC voltage reduction circuit is respectively connected with the output ends of the various voltage reference circuits and the output end of the voltage and current feedback circuit;
the voltage setting ends of the various voltage reference circuits are connected with the output end of the high-voltage start-stop control circuit;
the output end of the voltage stabilizing circuit is connected with the power input end of the MCU control circuit;
the signal input end of the MCU control circuit is connected with the output end of the sampling circuit, the output 1 end of the MCU control circuit is connected with the input end of the high-voltage start-stop control circuit, the output 2 end of the MCU control circuit is connected with the input end of the segmented current setting circuit, and the output 3 end of the MCU control circuit is connected with the input end of the segmented voltage setting circuit;
the output end of the high-voltage start-stop control circuit is connected with the GND end of the ZVS booster circuit;
the current feedback setting end of the ZVS booster circuit is connected with the output end of the segmented current setting circuit, and the voltage feedback setting end of the ZVS booster circuit is connected with the output end of the segmented voltage setting circuit;
the current input end of the voltage and current feedback circuit is connected with the current feedback end of the segmented current setting circuit, and the voltage input end of the voltage and current feedback circuit is connected with the voltage feedback end of the segmented voltage setting circuit;
and the input end of the sampling circuit is connected with the voltage feedback setting end of the ZVS booster circuit.
2. The high-voltage power driving circuit according to claim 1, wherein the AC-DC voltage reduction circuit includes an AC line CN1, the ACL end of the AC line CN1 is connected to one end of a fuse F1, the ACN end of the AC line CN1 is connected to one end of a varistor RV1, one end of an X capacitor CX1 and an AC second input end of a bridge stack BD1, the other end of the fuse F1 is connected to the other end 1 of the varistor RV, the other end of the X capacitor CX1 and an AC first input end of the bridge stack BD1, the cathode of the bridge stack BD1 is grounded, the anode of the bridge stack BD1 is connected to the anode end of an electrolytic capacitor EC1, the capacitor C1, the resistor R1 and the first end of a transformer T1, the other end of the electrolytic capacitor EC1 is grounded, the other end of the capacitor C1 is connected to the other end of a resistor R1, the other end of the resistor R1 is connected to a resistor R2, the other end of the resistor R2 is connected to the cathode of a diode D5, the anode of the diode D5 is connected with a pin 5 of the power driving chip U1, a pin 6 of the power driving chip U1, a pin 7 of the power driving chip U1, a pin 8 of the power driving chip U1 and a 3 rd end of the transformer T1, the pin 1 and the pin 2 of the power driving chip U1 are grounded, a pin 4 of the power driving chip U1 is connected with the output ends of the electrolytic capacitor EC4 and the multiple voltage reference circuits, the other end of the electrolytic capacitor EC4 is grounded, the pin 3 of the power driving chip U1 is connected with the output ends of the multiple voltage reference circuits, the 10 th end of the transformer T1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the electrolytic capacitor EC2, the TVS1 tube and the power supply VDD end, and the 8 th end of the transformer T1, the other end of the electrolytic capacitor EC2 and the other end of the TVS1 tube are grounded.
3. The high-voltage power supply driving circuit according to claim 2, wherein the multiple voltage reference circuits include a zener diode D6, a cathode of the zener diode D6 is connected to a power supply VDD, an anode of the zener diode D6 is connected to a resistor R7, the other end of the resistor R7 is connected to a resistor R12 and a pin 1 of an optocoupler U2, a pin 2 of the optocoupler U2 is connected to the other end of the resistor R12, an output end of a voltage current feedback circuit and a diode D7, a pin 4 of the optocoupler U2 is connected to a pin 4 of a power supply driving chip U1, a pin 3 of the optocoupler U2 is connected to a pin 3 of the power supply driving chip U1, the other end of the diode D7 is connected to a resistor R24 and an output end of a voltage reference IC U3, the other end of the resistor R24 is connected to a capacitor C8, the other end of the C8 is connected to a resistor R23, a resistor R34, a resistor R33 and a sampling end of the voltage reference IC U3, the voltage reference IC U3 is grounded, the other end of the resistor R23 is connected to the power supply VDD, the other end of the resistor R34 is connected to the GND terminal, and the other end of the resistor R33 is connected to a GND terminal of the high-voltage reference diode D8 is connected to the output end of the high-voltage diode D8.
4. The high-voltage power supply driving circuit according to claim 3, wherein the voltage regulator circuit comprises a resistor R36, one end of the resistor R36 is connected to a power supply VDD, the other end of the resistor R36 is connected to a diode D9 and a capacitor C9, the other end of the diode D9 is connected to an electrolytic capacitor EC5 and a pin 3 of a voltage regulator IC U4, a pin 2 of the voltage regulator IC U4 is connected to an electrolytic capacitor EC6, a capacitor C10 and a power supply VCC, and the other ends of the capacitor C9, the electrolytic capacitor EC5, the pin 1 of the voltage regulator IC U4, the electrolytic capacitor EC6 and the capacitor C10 are grounded.
5. The high-voltage power supply driving circuit according to claim 4, wherein the MCU control circuit comprises a capacitor C15, one end of the capacitor C15 is grounded, the other end of the capacitor C15 is connected with pins 18 of power supplies VCC, TVS4 and a single chip microcomputer U8, the other end of the TVS4 is grounded, pins 13, 11, 10, 1,2 and 8 of the single chip microcomputer U8 are grounded, and the single chip microcomputer U8 is connected with a high-voltage start-stop control circuit, a segmented current setting circuit, a segmented voltage setting circuit, a sampling circuit and a voltage stabilizing circuit.
6. The high-voltage power supply driving circuit according to claim 5, wherein the high-voltage start-stop control circuit comprises a resistor R13, the resistor R13 is connected to pin 9 of the single chip microcomputer U8, the other end of the resistor R13 is connected to a resistor R16 and a transistor Q4, the other end of the resistor R16 is grounded, the E pole base of the transistor Q4, the C pole of the transistor Q4 is connected to a resistor R14, a resistor R8 and the G pole of the MOS transistor Q3, the other end of the resistor R14 is grounded, the other end of the resistor R8 is connected to a power supply VDD, the S pole of the MOS transistor Q3 is grounded, and the D pole of the MOS transistor Q3 is connected to the various voltage reference circuits and the ZVS boost circuit.
7. The high-voltage power driving circuit according to claim 6, wherein the ZVS boost circuit comprises an electrolytic capacitor EC3, the electrolytic capacitor EC3 is connected with a diode D1 and an inductor L1, the other end of the inductor L1 is connected with a resistor R3, a resistor R5 and a pin 3 of a center tap of a transformer TF1, the other end of the resistor R3 is connected with a pin 6 of a power auxiliary winding of the transformer TF1 and a base of a transistor Q1, the other end of the electrolytic capacitor EC3 is connected with various voltage reference circuits, a high-voltage start-stop circuit, an emitter of the transistor Q1 and an emitter of the transistor Q2, a collector of the transistor Q1 is connected with a capacitor C4 and a pin 5 of the transformer TF1, the other end of the resistor R5 is connected with a base of the transistor Q2 and a resistor R6, a collector of the transistor Q2 is connected with the other end of the capacitor C4 and a pin 2 of the transformer TF1, the other end of the resistor R6 is connected with a pin 1 of the transformer TF1, a pin 7 of a high-voltage winding of the transformer TF1 is connected with a capacitor C2, a diode D4 and a diode D3, the other end of the capacitor C3 is connected with a ground, and the other end of the capacitor TF 3 is connected with a ground, and the other end of the capacitor C3 and the diode C3 and the capacitor C3.
8. The high-voltage power supply driving circuit according to claim 7, wherein the voltage-current feedback circuit comprises a diode D10 and a diode D12, the diode D10 and the diode D12 are connected to the other end of the resistor R12, the other end of the diode D10 is connected to a capacitor C11 and a pin 1 of the operational amplifier IC U5, the other end of the capacitor C11 is connected to a resistor R39, the other end of the resistor R39 is connected to a pin 2 of the operational amplifier IC U5 and a resistor R38, and the other end of the resistor R38 is connected to the segment voltage setting circuit; diode D12's the other end is connected 1 foot and electric capacity C16 that IC U7 was put to fortune, electric capacity C16's other end connecting resistance R45, 2 feet and resistance R43 that IC U7 was put to fortune is connected to resistance R45's the other end, resistance R43 connects the segmentation electric current and sets up the circuit, IC U7's 4 feet ground connection is put to fortune, power VDD and electric capacity C14 are connected to fortune 8 feet of IC U7, electric capacity C14's other end ground connection, IC U5's 3 feet connecting resistance R35 and resistance R34 are put to fortune, power VDD is connected to resistance R35's the other end, adjustable resistance VR2 is connected to resistance R40's the other end, adjustable resistance VR 2's the other end is connected with power amplifier IC U7's 3 feet and resistance R44, resistance R44 ground connection.
9. The high-voltage power supply driving circuit according to claim 8,
the segmented current setting circuit comprises an HIB end, the HIB end is connected with the other side of a resistor R43, the other end of the resistor HIB end is connected with a resistor R17, a resistor R18, a resistor R19, a resistor R20, a capacitor C7, a resistor R21, a resistor R22 and a resistor R9, the other end of the resistor R9 is connected with a TVS3 and a leading-out end LN2, the other ends of the resistor R22, the resistor R21 and the capacitor C7 are grounded, the other ends of the resistor R19 and the resistor R20 are connected with a D pole of an MOS tube Q6, the S pole of the MOS tube Q6 is grounded, the G pole of the MOS tube Q6 is connected with a resistor R28 and a resistor R27, the other end of the resistor R28 is grounded, the other end of the resistor R27 is connected with a pin 3 of a singlechip U8, the other ends of the resistor R18 and the resistor R17 are connected with a D pole of an MOS tank Q5, the S pole of the MOS tube Q5 is grounded, the G pole of the MOS tube Q5 is connected with a resistor R25 and a pin 4 of the singlechip U8;
the segmented voltage setting circuit comprises an HVB end, the HVB end is connected with the other side of the resistor R38, the HVB end is connected with the inductor L2, the other end of the inductor L2 is connected with the TVS2, the adjustable resistor VR1, the resistor R4, the resistor R10, the resistor R11 and the capacitor C6, the other end of the resistor R4 is connected with the diode D2 and the leading-out end LN1, the other end of the TVS2 is grounded, the other end of the adjustable resistor VR1 is connected with the resistor R15, the other end of the resistor R15 is grounded, the other end of the resistor R10 is connected with the D pole of the MOS tube Q7, the S pole of the MOS tube Q7 is grounded, the G pole of the MOS tube Q7 is connected with the resistor R29 and the resistor R30, the other end of the resistor R30 is grounded, the other end of the resistor R29 is connected with the pin 6 of the single chip microcomputer U8, the other end of the resistor R11 is connected with the D pole of the MOS tube Q8, the S pole of the MOS tube Q8 is grounded, the G pole of the MOS tube Q8 is connected with the ground, the G pole of the MOS tube Q8 is connected with the resistor R32 and the resistor R31, the other end of the resistor R32 is connected with the pin of the single chip microcomputer U5, and the pin of the resistor R5 is connected with the pin of the single chip microcomputer U8.
10. The high-voltage power supply driving circuit according to claim 9, wherein the sampling circuit comprises a resistor R42, one end of the resistor R42 is connected to the HVB terminal, the other end of the resistor R42 is connected to a capacitor C13, a diode D11 and a resistor R41, the other ends of the capacitor C13 and the diode D11 are grounded, and the other end of the resistor R41 is connected to a capacitor C12 and a pin 12 of the single chip U8.
CN202210988708.7A 2022-08-17 2022-08-17 High-voltage power supply driving circuit Pending CN115276429A (en)

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Application Number Priority Date Filing Date Title
CN202210988708.7A CN115276429A (en) 2022-08-17 2022-08-17 High-voltage power supply driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210988708.7A CN115276429A (en) 2022-08-17 2022-08-17 High-voltage power supply driving circuit

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CN115276429A true CN115276429A (en) 2022-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210988708.7A Pending CN115276429A (en) 2022-08-17 2022-08-17 High-voltage power supply driving circuit

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