CN106130392B - A kind of frequency, amplitude, power adjustable section high frequency and high voltage power supply circuit - Google Patents
A kind of frequency, amplitude, power adjustable section high frequency and high voltage power supply circuit Download PDFInfo
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- CN106130392B CN106130392B CN201610722285.9A CN201610722285A CN106130392B CN 106130392 B CN106130392 B CN 106130392B CN 201610722285 A CN201610722285 A CN 201610722285A CN 106130392 B CN106130392 B CN 106130392B
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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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/538—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration
- H02M7/53803—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The present invention relates to a kind of frequencies, amplitude, the high frequency and high voltage power supply circuit of power adjustable section, regulate and control voltage commutation filtering and its power samples circuit respectively with main control and driving circuit, ac output frequency controls and its driving circuit, output AC power is set and overload protecting circuit, ac output voltage amplitude is set and its feedback circuit connection, exchange exports and its current sampling circuit is controlled respectively with ac output frequency and its driving circuit, output AC power is set and overload protecting circuit, ac output voltage amplitude is set and its feedback circuit connection, main control and driving circuit respectively with output AC power setting and overload protecting circuit, ac output voltage amplitude is set and its feedback circuit connection, supply input respectively with main control and driving circuit, ac output frequency controls and its driving circuit connection.Circuit theory is simple, easy to control, and the corresponding entity power volume of the circuit is small, and function is more, and reliable long-term working is high, user-friendly.
Description
Technical field
The present invention relates to a kind of frequency being applied in the fields such as analytical instrument, biomedicine, environmental monitoring, scientific research, width
The high frequency and high voltage power supply circuit of value, power adjustable section.
Background technology
For most of high-frequency and high-voltage power supply currently on the market based on high-voltage DC power supply, application field is also very wide
It is general, and high frequency and high voltage power supply type is less, entity power volume is larger, and adjustable range is narrow, and performance is also relatively simple, reliably
Property is not high, it is impossible to meet user demand.With the expansion in the related applications such as the development of electronics technology, particularly plasma field
Greatly, demand of the market to high frequency and high voltage power supply is increasing, has higher requirement to the performance of its product.
Invention content
In view of insufficient existing for existing market, the present invention provides the wide frequency of a kind of output voltage height, adjustable range, width
The high frequency and high voltage power supply circuit of value, power adjustable section.
The present invention to achieve the above object, is adopted the technical scheme that：A kind of frequency, amplitude, power adjustable section height
Frequency High Level AC Voltage source circuit, it is special including main control and driving circuit, regulation and control voltage commutation filtering and its power samples circuit
Sign is：Further include ac output frequency control and its driving circuit, output AC power setting and overload protecting circuit, exchange
Output voltage amplitude set and its feedback circuit, exchange output and its current sampling circuit, it is described regulation and control voltage commutation filtering and
Its power samples circuit respectively with main control and driving circuit, ac output frequency control and its driving circuit, exchange output work
Rate is set and overload protecting circuit, the setting of ac output voltage amplitude and its feedback circuit connection, the exchange output and its electricity
Flow sample circuit respectively with ac output frequency control and its driving circuit, output AC power setting and overload protecting circuit,
Ac output voltage amplitude is set and its feedback circuit connection, and the main control and driving circuit are set respectively with output AC power
Fixed and overload protecting circuit, the setting of ac output voltage amplitude and its feedback circuit connection, supply input respectively with main control and
Driving circuit, ac output frequency control and its driving circuit connection；
Physical circuit is connected as：In the ac output frequency control and its driving circuit ,+Vin points of supply input voltage
One end of other connecting resistance R41 and R42, the other end of resistance R41 respectively with the anode of capacitance C3, the cathode of zener diode D12
It is connected and is used as in-line power end Vcc, the cathode of capacitance C3 is connected with the anode of zener diode D12 is followed by input ground GND, DC
1 foot of feeder ear of power conversion module M1 connects the other end of the anode of capacitance C30, the cathode of diode D11, resistance R42 respectively,
2 foot of input ground end of DC power supply modular converter M1 is connected with the cathode of capacitance C30 is followed by input ground GND, DC power supply modular converter
6 foot of output terminal of M1 connects 1 foot of feeder ear and high side of the anode of diode D11, the anode of capacitance C31, control chip U4 respectively
8 foot of suspended power supply anode, 4 foot of output ground terminal of DC power supply modular converter M1 is connected with the cathode of capacitance C31 is followed by input ground
Two fixing ends 1 of GND, resistance R4 and potentiometer VR2,2 feet are in parallel, 1 foot of a fixing end and 3 foot of adjustable side of potentiometer VR2
It is connected, one end of resistance R4 connects 2 foot of vibrator timing resistor input terminal of control chip U4 by resistance R3, and resistance R4's is another
End meets 2 foot of another fixing end, the capacitance C27 of 3 foot of vibrator timing capacitor input terminal of control chip U4, potentiometer VR2 respectively
One end, 4 foot of ground terminal of control chip U4 respectively with control 6 foot of high pressure suspending power supply negative terminal of chip U4, capacitance C27 it is another
One end, which is connected, is followed by input ground GND, and diode D13 is in parallel with resistance R9, and diode D14 is in parallel with resistance R10, control chip U4
7 foot of high side gate driver output end connect the cathode of diode D13, the lowside gate driver output end 5 of control chip U4
Foot connects the cathode of diode D14, and the anode of diode D13 connects the grid of MOS triodes T5, and the anode of diode D14 meets MOS tri-
The grid of pole pipe T4, MOS triodes T4 is connected with the source electrode of T5 is followed by input ground GND, and the drain electrode of MOS triodes T5 connects transformer
1 foot of Same Name of Ends of TRF2 armature windings Lp1, the drain electrode of MOS triodes T4 connect the different name end 3 of transformer TRF2 armature windings Lp2
Foot, 2 foot of center-side of primary winding Lp1 and Lp2 connect one end of inductance L3 and capacitance C17 respectively, and capacitance C17's is another
The anode of capacitance C2 in another termination regulation and control voltage commutation filtering of termination input ground GND, inductance L3 and its power samples circuit；
In the output AC power setting and overload protecting circuit, 6 foot of inverting input of amplifier U3B connects electricity respectively
Hold one end of C24 and resistance R27, resistance R16 is in parallel with capacitance C26, and 5 foot of in-phase input end of amplifier U3B passes through resistance R16
1 foot of a fixing end for meeting input ground GND, potentiometer VR1 meets input ground GND, and 2 foot of another fixing end of potentiometer VR1 connects inside
3 foot of adjustable side of reference edge Vref, potentiometer VR1 distinguished by resistance R29 one end of connecting resistance R28, resistance R27 it is another
End, the cathode of diode D6, amplifier in another termination regulation and control voltage commutation filtering of resistance R28 and its power samples circuit
One end of 7 foot of the output terminal difference connecting resistance R24 of U3B, the other end of capacitance C24, resistance R5 is in parallel with capacitance C25, resistance R24
One end of other end difference connecting resistance R5, triode T3 base stage, the emitter of triode T3 and the other end phase of resistance R5
Company is followed by 1 foot of anode of a termination photoelectrical coupler U5 input diodes of input ground GND, resistance R31, photoelectrical coupler U5's
4 foot of collector of output triode is connected with the collector of triode T3 to be followed by controlling chip U2's in main control and driving circuit
5 foot of voltage controling end, 2 foot of cathode of photoelectrical coupler U5 input diodes is connected with 3 foot of emitter of output triode to be followed by
Input ground GND；
In the ac output voltage amplitude setting and its feedback circuit, resistance R18 is in parallel with capacitance C7, resistance R18's
The anode of capacitance C2, the other end of resistance R18 connect electricity respectively in one termination regulation and control voltage commutation filtering and its power samples circuit
One end of R15 and R26, another termination input ground GND of resistance R15 are hindered, 2 foot of inverting input of amplifier U3A connects electricity respectively
Hold one end of C22, the other end of resistance R26, resistance R13 is in parallel with diode D9, and 1 foot of output terminal of amplifier U3A connects respectively
One end of resistance R14, the cathode of diode D9, capacitance C22 the other end, the anode of diode D9 connects main control and driving circuit
5 foot of voltage controling end of middle control chip U2, resistance R25 is in parallel with capacitance C23,3 foot of the in-phase input end difference of amplifier U3A
One end of connecting resistance R25 and R35,4 foot of power supply negative terminal of amplifier U3A is connected respectively with the other end of resistance R14 and R25 to be followed by
Input ground GND, 8 foot of power supply anode of amplifier U3A meet in-line power end Vcc, and 8 foot of power supply anode of amplifier U6A connects inside
4 foot of power supply negative terminal of feeder ear Vcc, amplifier U6A meet input ground GND, and 1 foot of output terminal of amplifier U6A meets capacitance C10 respectively
One end, resistance R35 the other end, one end of 2 foot of the inverting input difference connecting resistance R37 of amplifier U6A, capacitance C10
The other end, 3 foot of in-phase input end of amplifier U6A connect respectively one end of capacitance C11, potentiometer VR3 3 foot of adjustable side, current potential
1 foot of a fixing end of device VR3 connects internal reference end Vref, 2 foot of another fixing end of potentiometer VR3 and the other end of capacitance C11
It is connected and is followed by input ground GND, capacitance C13 is in parallel with diode D15, and resistance R38 is in parallel with capacitance C12, resistance R33 and R34 string
Connection, one end of one end difference connecting resistance R39 of resistance R34, the cathode of diode D15, the other end difference connecting resistance of resistance R39
One end of R36 and R38, the other end of resistance R37, the anode of diode D15 is connected with the other end of resistance R38 is followed by input ground
6 foot of inverting input of GND, discharger U6B are connected with 7 foot of output terminal, and 5 foot of in-phase input end of amplifier U6B connects electricity respectively
Hold one end of C14, the other end of resistance R36, another termination input ground GND of capacitance C14,7 foot of output terminal of amplifier U6B leads to
One end that resistance R40 meets capacitance C32 is crossed, and is drawn as voltage monitoring end Vdis, another termination input ground GND of capacitance C32；
In the exchange output and its current sampling circuit, 4 feet of transformer TRF2 secondary windings Ls are divided by inductance L4
One end of capacitance C18, the anode of diode D7 are not connect, and are drawn as exchange output L ends, transformer TRF2 secondary windings Ls's
5 feet connect respectively one end of capacitance C19, the other end of capacitance C18, rectifier bridge B1 1 foot, the cathode of diode D7 meets diode D8
Anode, the cathode of diode D8 connect respectively by resistance R22 the other end of capacitance C19, the setting of ac output voltage amplitude and
One end of resistance R33 in its feedback circuit, 3 feet of rectifier bridge B1 are drawn as exchange output N-terminal, and capacitance C9 and resistance R19 are simultaneously
Connection, resistance R30 is in parallel with capacitance C8, one end of 2 feet difference the connecting resistance R19 and R30 of rectifier bridge B1, output AC power setting
And in overload protecting circuit resistance R31 the other end, one end of another terminating resistor R32 of resistance R30 simultaneously be used as current monitoring
Idis is held to draw, 4 feet of rectifier bridge B1 are connected with the other end of resistance R19 and R32 is followed by input ground GND.
The beneficial effects of the invention are as follows：Circuit theory is simple, easy to control, and the corresponding entity power volume of the circuit is small,
Function is more, and reliable long-term working is high.With ac output frequency regulatory function, tuning range is wide, frequency-tuning range
For 15KHz~25KHz.With exchange output amplitude regulatory function, amplitude modulation range is big, and amplitude adjustable range is 1KV~10KV.
With output AC power regulatory function, adaptation power bracket is wide, and power regulating range is 1W~20W.It is exported with exchange
Amplitude and output current monitoring function, it is user-friendly.
Description of the drawings
The power circuit that Fig. 1 is the present invention connects block diagram；
Fig. 2 is the power circuit principle figure of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of frequency, amplitude, power adjustable section high frequency and high voltage power supply circuit, including master control
System and driving circuit, regulation and control voltage commutation filtering and its power samples circuit, further include ac output frequency control and its driving
Circuit, output AC power setting and overload protecting circuit, the setting of ac output voltage amplitude and its feedback circuit, exchange output
And its current sampling circuit.
Regulate and control voltage commutation filtering and its power samples circuit respectively with main control and driving circuit, ac output frequency control
System and its driving circuit, output AC power setting and overload protecting circuit, the setting of ac output voltage amplitude and its feedback electricity
Road connects, and exchange output and its current sampling circuit are respectively with ac output frequency control and its driving circuit, exchanging output work
Rate is set and overload protecting circuit, the setting of ac output voltage amplitude and its feedback circuit connection, main control and driving circuit point
It does not connect, powers with output AC power setting and overload protecting circuit, ac output voltage amplitude setting and its feedback circuit
Input is connect respectively with main control and driving circuit, ac output frequency control and its driving circuit.
In above-mentioned ac output frequency control and its driving circuit, supply input voltage+Vin difference connecting resistances R41 and R42
One end, the other end of resistance R41 is connected with the cathode of the anode of capacitance C3, zener diode D12 and is used as internal supply respectively
The cathode of electric end Vcc, capacitance C3 are connected with the anode of zener diode D12 is followed by input ground GND, DC power supply modular converter M1's
1 foot of feeder ear meets the other end of the anode of capacitance C30, the cathode of diode D11, resistance R42, DC power supply modular converter M1 respectively
2 foot of input ground end be connected with the cathode of capacitance C30 be followed by input ground GND, DC power supply modular converter M1 6 foot of output terminal difference
Meet 8 foot of 1 foot of feeder ear and high side suspended power supply anode of the anode of diode D11, the anode of capacitance C31, control chip U4, DC
4 foot of output ground terminal of power conversion module M1 is connected with the cathode of capacitance C31 is followed by input ground GND, resistance R4 and potentiometer VR2
Two fixing ends 1,2 feet it is in parallel, 1 foot of a fixing end of potentiometer VR2 is connected with 3 foot of adjustable side, and one end of resistance R4 passes through
Resistance R3 connects 2 foot of vibrator timing resistor input terminal of control chip U4, and the other end of resistance R4 connects control chip U4's respectively
3 foot of vibrator timing capacitor input terminal, 2 foot of another fixing end of potentiometer VR2, capacitance C27 one end, control chip U4 connects
4 foot of ground terminal is followed by input ground with 6 foot of high pressure suspending power supply negative terminal of chip U4, the other end of capacitance C27 is controlled to be connected respectively
GND, diode D13 is in parallel with resistance R9, and diode D14 is in parallel with resistance R10, and the high side gate driver of control chip U4 is defeated
7 foot of outlet connects the cathode of diode D13, and 5 foot of lowside gate driver output end of control chip U4 connects the negative of diode D14
Pole, the anode of diode D13 connect the grid of MOS triodes T5, and the anode of diode D14 meets the grid of MOS triodes T4, MOS
Triode T4 is connected with the source electrode of T5 is followed by input ground GND, and the drain electrode of MOS triodes T5 meets transformer TRF2 armature windings Lp1
1 foot of Same Name of Ends, the drain electrode of MOS triodes T4 connects 3 foot of different name end of transformer TRF2 armature windings Lp2, primary around
2 foot of center-side of group Lp1 and Lp2 connects one end of inductance L3 and capacitance C17 respectively, and another termination of capacitance C17 inputs ground GND,
The anode of capacitance C2 in another termination regulation and control voltage commutation filtering of inductance L3 and its power samples circuit.
In above-mentioned output AC power setting and overload protecting circuit, 6 foot of inverting input of amplifier U3B connects electricity respectively
Hold one end of C24 and resistance R27, resistance R16 is in parallel with capacitance C26, and 5 foot of in-phase input end of amplifier U3B passes through resistance R16
1 foot of a fixing end for meeting input ground GND, potentiometer VR1 meets input ground GND, and 2 foot of another fixing end of potentiometer VR1 connects inside
3 foot of adjustable side of reference edge Vref, potentiometer VR1 distinguished by resistance R29 one end of connecting resistance R28, resistance R27 it is another
End, the cathode of diode D6, amplifier in another termination regulation and control voltage commutation filtering of resistance R28 and its power samples circuit
One end of 7 foot of the output terminal difference connecting resistance R24 of U3B, the other end of capacitance C24, resistance R5 is in parallel with capacitance C25, resistance R24
One end of other end difference connecting resistance R5, triode T3 base stage, the emitter of triode T3 and the other end phase of resistance R5
Company is followed by 1 foot of anode of a termination photoelectrical coupler U5 input diodes of input ground GND, resistance R31, photoelectrical coupler U5's
4 foot of collector of output triode is connected with the collector of triode T3 to be followed by controlling chip U2's in main control and driving circuit
5 foot of voltage controling end, 2 foot of cathode of photoelectrical coupler U5 input diodes is connected with 3 foot of emitter of output triode to be followed by
Input ground GND.
In above-mentioned ac output voltage amplitude setting and its feedback circuit, resistance R18 is in parallel with capacitance C7, resistance R18's
The anode of capacitance C2, the other end of resistance R18 connect electricity respectively in one termination regulation and control voltage commutation filtering and its power samples circuit
One end of R15 and R26, another termination input ground GND of resistance R15 are hindered, 2 foot of inverting input of amplifier U3A connects electricity respectively
Hold one end of C22, the other end of resistance R26, resistance R13 is in parallel with diode D9, and 1 foot of output terminal of amplifier U3A connects respectively
One end of resistance R14, the cathode of diode D9, capacitance C22 the other end, the anode of diode D9 connects main control and driving circuit
5 foot of voltage controling end of middle control chip U2, resistance R25 is in parallel with capacitance C23,3 foot of the in-phase input end difference of amplifier U3A
One end of connecting resistance R25 and R35,4 foot of power supply negative terminal of amplifier U3A is connected respectively with the other end of resistance R14 and R25 to be followed by
Input ground GND, 8 foot of power supply anode of amplifier U3A meet in-line power end Vcc, and 8 foot of power supply anode of amplifier U6A connects inside
4 foot of power supply negative terminal of feeder ear Vcc, amplifier U6A meet input ground GND, and 1 foot of output terminal of amplifier U6A meets capacitance C10 respectively
One end, resistance R35 the other end, one end of 2 foot of the inverting input difference connecting resistance R37 of amplifier U6A, capacitance C10
The other end, 3 foot of in-phase input end of amplifier U6A connect respectively one end of capacitance C11, potentiometer VR3 3 foot of adjustable side, current potential
1 foot of a fixing end of device VR3 connects internal reference end Vref, 2 foot of another fixing end of potentiometer VR3 and the other end of capacitance C11
It is connected and is followed by input ground GND, capacitance C13 is in parallel with diode D15, and resistance R38 is in parallel with capacitance C12, resistance R33 and R34 string
Connection, one end of one end difference connecting resistance R39 of resistance R34, the cathode of diode D15, the other end difference connecting resistance of resistance R39
One end of R36 and R38, the other end of resistance R37, the anode of diode D15 is connected with the other end of resistance R38 is followed by input ground
6 foot of inverting input of GND, discharger U6B are connected with 7 foot of output terminal, and 5 foot of in-phase input end of amplifier U6B connects electricity respectively
Hold one end of C14, the other end of resistance R36, another termination input ground GND of capacitance C14,7 foot of output terminal of amplifier U6B leads to
One end that resistance R40 meets capacitance C32 is crossed, and is drawn as voltage monitoring end Vdis, another termination input ground GND of capacitance C32.
In above-mentioned exchange output and its current sampling circuit, 4 feet of transformer TRF2 secondary windings Ls are divided by inductance L4
One end of capacitance C18, the anode of diode D7 are not connect, and are drawn as exchange output L ends, transformer TRF2 secondary windings Ls's
5 feet connect respectively one end of capacitance C19, the other end of capacitance C18, rectifier bridge B1 1 foot, the cathode of diode D7 meets diode D8
Anode, the cathode of diode D8 connect respectively by resistance R22 the other end of capacitance C19, the setting of ac output voltage amplitude and
One end of resistance R33 in its feedback circuit, 3 feet of rectifier bridge B1 are drawn as exchange output N-terminal, and capacitance C9 and resistance R19 are simultaneously
Connection, resistance R30 is in parallel with capacitance C8, one end of 2 feet difference the connecting resistance R19 and R30 of rectifier bridge B1, output AC power setting
And in overload protecting circuit resistance R31 the other end, one end of another terminating resistor R32 of resistance R30 simultaneously be used as current monitoring
Idis is held to draw, 4 feet of rectifier bridge B1 are connected with the other end of resistance R19 and R32 is followed by input ground GND.
Control the model of chip U4：IR21531.
Photoelectrical coupler U5 models：P281.
Control the model of chip U2：7555.
Amplifier U3 and U6 model：LF442.
Fiducial chip U1 models：LM4040.
By taking the high frequency and high voltage power supply circuit of the design as an example, entity products are made, process is actually detected, power supply
Property indices have reached design requirement.
To ensure the reliability of power supply long-term work, when selecting component, according to the requirement of actual product, fully consider
The redundancy of its each parameter.
According to real output and voltage, transformer TRF1 and transformer TRF2 is selected.It is filled when making transformer TRF2
Divide and consider the pressure-resistant problem of insulation；When output power is larger, power MOS pipe T1, T4 and T5 need to consider heat dissipation problem.
Operation principle
In main control and driving circuit, Master control chip U2 uses 7555, the groups such as it and resistance R1, R23, capacitance C20
Into multi-resonant oscillating circuit, high frequency square wave pulse is exported in 3 foot of output terminal of U2, drives MOS switch pipe T1 and high frequency transformer
TRF1.Various feedback signals pass through 5 foot of voltage controling end, the frequency and duty ratio of control output square-wave pulse, to reach control
The purpose of relevant feedback variable.At start and stop R/S ends, by Transistor-Transistor Logic level, the startup and stopping of power supply are controlled.
In the filtering of regulation and control voltage commutation and its power samples circuit, obtained from high frequency transformer TRF1 secondary windings
High-frequency pulse voltage, through diode D2 ~ D5 rectifications, the filtering such as inductance L2 and capacitance C2, C15 obtain tens volts of stable direct currents
Voltage, the armature winding for high frequency transformer TRF2 provide excitation voltage.
In ac output frequency control and its driving circuit, power supply+Vin is by DC/DC power conversion module M1 for input,
Steady dc voltage is obtained, the power supply as control chip U4.Chip U4 uses IR32531, is auto-oscillation type half-bridge driver,
The control of its output driving is recommending output mode structure by former half-bridge structure reconfiguration, through switch transistor T 4, T5, drives high frequency transformer
TRF2.Meanwhile by potentiometer VR2, in a certain range, its output frequency is adjusted, and then adjust high-frequency and high-voltage exchange output
The frequency of voltage.
In output AC power setting and overload protecting circuit, it is basically unchanged in ac output voltage and regulation and control voltage
Under the conditions of, it is set and adjusted by potentiometer VR1, the regulation and control output current acquired on resistance R21 is anti-through amplifier U3B electric currents
Feedback, the maximum output current of control regulation and control voltage, so as to control, adjust the peak power output of exchange output.
Ac output voltage amplitude setting and its feedback circuit in, the amplitude of ac output voltage, through resistance R33,
The feedback samples such as R34, R38 are sent to 2 foot of inverting input of amplifier U6A, the ac output voltage width from potentiometer VR3
Degree setting value is sent to 3 foot of in-phase input end, their differential voltage is amplified through amplifier U6A to be exported, and is sent same to amplifier U3A
3 foot of phase input terminal, regulation and control voltage are sampled by the Voltage Feedbacks such as resistance R20, R15 and capacitance C7, sent to the reverse phase of amplifier U3A
2 foot of input terminal, they are exported by the amplification of amplifier U3A, 5 foot of voltage controling end of control chip U2, and then control exchange
Output voltage amplitude.
In exchange output and its current sampling circuit, secondary by high frequency transformer TRF2 directly exports from L ends and N-terminal
High-frequency ac voltage, the voltage send to exchange output voltage amplitude and set after the rectifying and wave-filtering of diode D7, D8 and capacitance C19
Fixed and its feedback circuit.High-frequency and high-voltage exchange exports rectified bridge B1, and the sampling letter of ac output current is obtained on resistance R19
Number, one is sent to output AC power setting and overload protecting circuit, secondly being used as output current after resistance R30, R32 partial pressure
Monitoring side Idis is drawn.
Claims (1)
1. a kind of high frequency and high voltage power supply circuit of frequency, amplitude, power adjustable section, including main control and driving circuit, tune
Control voltage commutation filtering and its power samples circuit, it is characterised in that：Further include ac output frequency control and its driving circuit,
Output AC power set and overload protecting circuit, ac output voltage amplitude setting and its feedback circuit, exchange output and its
Current sampling circuit, it is described regulation and control voltage commutation filtering and its power samples circuit respectively with main control and driving circuit, exchange
Output frequency controls and its driving circuit, output AC power setting and overload protecting circuit, the setting of ac output voltage amplitude
And its feedback circuit connection, the exchange output and its current sampling circuit with ac output frequency control and its drive respectively electricity
Road, output AC power setting and overload protecting circuit, the setting of ac output voltage amplitude and its feedback circuit connection, the master
Control and driving circuit are set respectively with output AC power and overload protecting circuit, ac output voltage amplitude are set and its anti-
Current feed circuit connects, and supply input is connect respectively with main control and driving circuit, ac output frequency control and its driving circuit；
Physical circuit is connected as：In the ac output frequency control and its driving circuit, supply input voltage+Vin connects respectively
One end of resistance R41 and R42, the cathode of the other end of resistance R41 respectively with the anode of capacitance C3, zener diode D12 are connected
And the cathode of in-line power end Vcc, capacitance C3 is used as to be connected with the anode of zener diode D12 and is followed by input ground GND, DC power supply
1 foot of feeder ear of modular converter M1 connects the other end of the anode of capacitance C30, the cathode of diode D11, resistance R42, DC electricity respectively
2 foot of input ground end of source modular converter M1 is connected with the cathode of capacitance C30 is followed by input ground GND, DC power supply modular converter M1's
6 foot of output terminal connects the anode of diode D11, the anode of capacitance C31,1 foot of feeder ear of control chip U4 and high lateral suspension respectively
8 foot of power positive end, 4 foot of output ground terminal of DC power supply modular converter M1 is connected with the cathode of capacitance C31 is followed by input ground GND, electricity
Two fixing ends 1,2 feet for hindering R4 and potentiometer VR2 are in parallel, and 1 foot of a fixing end of potentiometer VR2 is connected with 3 foot of adjustable side, electricity
The one end for hindering R4 connects 2 foot of vibrator timing resistor input terminal of control chip U4, the other end difference of resistance R4 by resistance R3
One end of 3 foot of vibrator timing capacitor input terminal of control chip U4,2 foot of another fixing end of potentiometer VR2, capacitance C27 are connect,
4 foot of ground terminal of chip U4 is controlled respectively with controlling 6 foot of high pressure suspending power supply negative terminal of chip U4, the other end phase of capacitance C27
Company is followed by input ground GND, and diode D13 is in parallel with resistance R9, and diode D14 is in parallel with resistance R10, the high side of control chip U4
7 foot of gate drivers output terminal connects the cathode of diode D13, and 5 foot of lowside gate driver output end of control chip U4 connects two
The cathode of pole pipe D14, the anode of diode D13 connect the grid of MOS triodes T5, and the anode of diode D14 meets MOS triodes T4
Grid, MOS triodes T4 is connected with the source electrode of T5 is followed by input ground GND, at the beginning of the drain electrode of MOS triodes T5 meets transformer TRF2
1 foot of Same Name of Ends of grade winding Lp1, the drain electrode of MOS triodes T4 connect 3 foot of different name end of transformer TRF2 armature windings Lp2, transformation
2 foot of center-side of device armature winding Lp1 and Lp2 connect one end of inductance L3 and capacitance C17 respectively, and another termination of capacitance C17 is defeated
Enter the anode of capacitance C2 in another termination regulation and control voltage commutation filtering of ground GND, inductance L3 and its power samples circuit；
In the output AC power setting and overload protecting circuit, 6 foot of inverting input of amplifier U3B connects capacitance respectively
One end of C24 and resistance R27, resistance R16 is in parallel with capacitance C26, and 5 foot of in-phase input end of amplifier U3B is connect by resistance R16
1 foot of a fixing end of input ground GND, potentiometer VR1 meet input ground GND, and 2 foot of another fixing end of potentiometer VR1 connects internal base
3 foot of adjustable side of quasi- end Vref, potentiometer VR1 distinguish one end of connecting resistance R28, the other end of resistance R27 by resistance R29,
The cathode of diode D6 in another termination regulation and control voltage commutation filtering of resistance R28 and its power samples circuit, amplifier U3B's
One end of 7 foot of output terminal difference connecting resistance R24, the other end of capacitance C24, resistance R5 is in parallel with capacitance C25, and resistance R24's is another
One end of one end difference connecting resistance R5, the base stage of triode T3, after the emitter of triode T3 is connected with the other end of resistance R5
Connect 1 foot of anode of a termination photoelectrical coupler U5 input diodes of input ground GND, resistance R31, the output of photoelectrical coupler U5
4 foot of collector of triode is connected with the collector of triode T3 is followed by the voltage that chip U2 is controlled in main control and driving circuit
5 foot of control terminal, 2 foot of cathode of photoelectrical coupler U5 input diodes is connected with 3 foot of emitter of output triode to be followed by inputting
Ground GND；
In the ac output voltage amplitude setting and its feedback circuit, resistance R18 is in parallel with capacitance C7, one end of resistance R18
Meet the anode of capacitance C2 in the filtering of regulation and control voltage commutation and its power samples circuit, the other end difference connecting resistance R15 of resistance R18
With one end of R26, another termination input ground GND of resistance R15,2 foot of inverting input of amplifier U3A meets capacitance C22 respectively
One end, resistance R26 the other end, resistance R13 is in parallel with diode D9,1 foot of output terminal of amplifier U3A difference connecting resistance
One end of R14, the cathode of diode D9, capacitance C22 the other end, the anode of diode D9, which is connect in main control and driving circuit, to be controlled
5 foot of voltage controling end of coremaking piece U2, resistance R25 is in parallel with capacitance C23, and 3 foot of in-phase input end of amplifier U3A connects electricity respectively
One end of R25 and R35 is hindered, 4 foot of power supply negative terminal of amplifier U3A is connected respectively with the other end of resistance R14 and R25 to be followed by inputting
8 foot of power supply anode of ground GND, amplifier U3A meet in-line power end Vcc, and 8 foot of power supply anode of amplifier U6A connects in-line power
Vcc is held, 4 foot of power supply negative terminal of amplifier U6A meets input ground GND, and 1 foot of output terminal of amplifier U6A connects the one of capacitance C10 respectively
End, the other end of resistance R35, one end of 2 foot of the inverting input difference connecting resistance R37 of amplifier U6A, capacitance C10 it is another
End, 3 foot of in-phase input end of amplifier U6A connect respectively one end of capacitance C11, potentiometer VR3 3 foot of adjustable side, potentiometer VR3
1 foot of a fixing end meet internal reference end Vref, after 2 foot of another fixing end of potentiometer VR3 is connected with the other end of capacitance C11
Input ground GND is met, capacitance C13 is in parallel with diode D15, and resistance R38 is in parallel with capacitance C12, resistance R33 and R34 series connection, resistance
One end of one end difference connecting resistance R39 of R34, the cathode of diode D15, the other end difference connecting resistance R36 of resistance R39 and
One end of R38, the other end of resistance R37, the anode of diode D15 is connected with the other end of resistance R38 is followed by input ground GND,
6 foot of inverting input of discharger U6B is connected with 7 foot of output terminal, and 5 foot of in-phase input end of amplifier U6B meets capacitance C14 respectively
One end, resistance R36 the other end, another termination input ground GND of capacitance C14,7 foot of output terminal of amplifier U6B passes through electricity
Resistance R40 connects one end of capacitance C32, and is drawn as voltage monitoring end Vdis, another termination input ground GND of capacitance C32；
In the exchange output and its current sampling circuit, 4 feet of transformer TRF2 secondary windings Ls are connect respectively by inductance L4
One end of capacitance C18, the anode of diode D7, and drawn as exchange output L ends, 5 feet of transformer TRF2 secondary windings Ls
Connect respectively one end of capacitance C19, the other end of capacitance C18, rectifier bridge B1 1 foot, the cathode of diode D7 connects diode D8's
Anode, the cathode of diode D8 connect respectively by resistance R22 the other end of capacitance C19, the setting of ac output voltage amplitude and its
One end of resistance R33 in feedback circuit, 3 feet of rectifier bridge B1 are drawn as exchange output N-terminal, and capacitance C9 and resistance R19 are in parallel,
Resistance R30 is in parallel with capacitance C8, one end of 2 feet of rectifier bridge B1 difference connecting resistance R19 and R30, output AC power setting and
The other end of resistance R31 in overload protecting circuit, one end of another terminating resistor R32 of resistance R30 are simultaneously used as current monitoring end
Idis is drawn, and 4 feet of rectifier bridge B1 are connected with the other end of resistance R19 and R32 is followed by input ground GND.
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| CN201610722285.9A CN106130392B (en) | 2016-08-25 | 2016-08-25 | A kind of frequency, amplitude, power adjustable section high frequency and high voltage power supply circuit |
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| CN201610722285.9A CN106130392B (en) | 2016-08-25 | 2016-08-25 | A kind of frequency, amplitude, power adjustable section high frequency and high voltage power supply circuit |
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| CN106130392A CN106130392A (en) | 2016-11-16 |
| CN106130392B true CN106130392B (en) | 2018-06-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107769560B (en) * | 2017-11-29 | 2023-10-31 | 苏州工业职业技术学院 | Adjustable switching power supply based on BUCK circuit |
| CN114362490B (en) * | 2021-12-30 | 2024-05-07 | 杭州春来科技有限公司 | Quadrupole rod power supply driving circuit |
| CN114414865A (en) * | 2022-01-13 | 2022-04-29 | 南京亚派科技股份有限公司 | Detection AC/DC source simply applied to sampling circuit |
| CN114221527B (en) * | 2022-02-22 | 2022-05-20 | 深圳市深澳视觉科技有限公司 | Alternating current-direct current energy conversion control circuit and high-frequency medical equipment |
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| EP0468513A2 (en) * | 1990-07-27 | 1992-01-29 | Tokyo Electric Co., Ltd. | High voltage power supply control apparatus |
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| CN205986669U (en) * | 2016-08-25 | 2017-02-22 | 东文高压电源（天津）股份有限公司 | High frequency and high voltage alternating current power supply circuit with adjustable frequency, amplitude, power |
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| EP0468513A2 (en) * | 1990-07-27 | 1992-01-29 | Tokyo Electric Co., Ltd. | High voltage power supply control apparatus |
| CN201623647U (en) * | 2010-03-17 | 2010-11-03 | 天津市东文高压电源厂 | Small-volume self-recovery protection negative-output high-voltage module power source |
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| CN106130392A (en) | 2016-11-16 |
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