CN108306627A - The amplification method of unipolarity square-wave signal - Google Patents
The amplification method of unipolarity square-wave signal Download PDFInfo
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- CN108306627A CN108306627A CN201810105224.7A CN201810105224A CN108306627A CN 108306627 A CN108306627 A CN 108306627A CN 201810105224 A CN201810105224 A CN 201810105224A CN 108306627 A CN108306627 A CN 108306627A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/02—Shaping pulses by amplifying
- H03K5/023—Shaping pulses by amplifying using field effect transistors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
- H03F3/16—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with field-effect devices
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Abstract
The present invention provides a kind of amplification methods of unipolarity square-wave signal, unipolar high voltage square-wave signal for the unipolarity square-wave signal of small magnitude to be enlarged into high pressure Slew Rate, it is characterized in that, being amplified to signal to be amplified using portable high-pressure amplifier, include the following steps：Step 1 inputs the signal to be amplified of outside；Step 2, reversed cell processing is signal to be amplified to obtain that two-way voltage magnitude is identical, frequency is identical, phase differs 180 ° unipolarity square-wave signal VP1, VP2；Step 3, driving unit processing unipolarity square-wave signal VP1, VP2 obtain the pulse signal with very high pull current and sink current；Step 4, primary coil return pulse signal of transformer, the first secondary coil and the second secondary coil export the identical ac square wave signal of two-way；Step 5, ac square wave signal make bridge arm unit and the quick alternate conduction of lower bridge arm unit；Step 6 exports the unipolar high voltage square-wave signal of high pressure Slew Rate.
Description
Technical field
The present invention relates to a kind of amplification methods of signal, and in particular to a kind of amplification method of unipolarity square-wave signal.
Background technology
High-voltage amplifier is a kind of precision electronic device in open loop or closed-loop control system, it exports adjustable
The superimposed high-voltage signal of function signal of high direct voltage or output bias high voltage and amplification is widely used in quantum optices, amount
In all -fiber time domain spectroscopy system in sub-information and Terahertz Technology field.
Common unipolar high voltage square-wave signal is mainly generated by desk-top high-voltage amplifier, and desk-top high-voltage amplifier is such as
The high-voltage amplifier of the GD-1 types of domestic Chinese Academy of Sciences's photoelectric technology research institute production, the high direct voltage of light company of mountain Daewoo production are put
Big device, the burleigh MODEL PZ-70 type high voltage amplifiers of external U.S.A Burleigh Instrument Inc. productions
The 23xx series high voltage amplifiers etc. that device, TEGAM Inc. are produced, these desk-top equal volumes of high-voltage amplifier are big, not portable
Disadvantage.
In addition, existing high-voltage amplifier is due to Metal-Oxide Semiconductor field-effect tube manufacture craft, it is golden
The grid and source electrode of category-oxide semiconductor field effect pipe in turn on process there are Miller platform voltage, this platform voltage
In the presence of affecting the charge rate of the miller capacitance between grid and source electrode, extend Metal-Oxide Semiconductor field-effect tube and lead
The logical time, therefore the unipolar high voltage square-wave signal exported haves the shortcomings that slew rate is low.
The portable pop system of Terahertz generally require one it is small, light-weight and being capable of outputting high quality (high pressure swing
Rate) unipolar high voltage square-wave signal high-voltage amplifier.It has been investigated how using portable high-pressure amplifier by small magnitude
Unipolarity square-wave signal be enlarged into the unipolar high voltage square-wave signal of high pressure Slew Rate very it is necessary to.
Invention content
The present invention is to solve how to amplify the unipolarity square-wave signal of small magnitude using portable high-pressure amplifier
For high pressure Slew Rate unipolar high voltage square-wave signal the problem of carry out, and it is an object of the present invention to provide a kind of unipolarity square-wave signal
Amplification method.
The present invention provides a kind of amplification methods of unipolarity square-wave signal, are used for the unipolarity square-wave signal of small magnitude
It is enlarged into the unipolar high voltage square-wave signal of high pressure Slew Rate, which is characterized in that using portable high-pressure amplifier to unipolarity side
Wave signal is amplified, and portable high-pressure amplifier includes：Signal input part, for inputting the signal to be amplified of outside, reversely
Unit is connect with signal input part, for it is signal to be amplified handled to obtain two-way voltage magnitude is identical, frequency is identical,
Phase differs 180 ° unipolarity square-wave signal VP1, VP2, driving unit, with the production of get Jie electronics corporations of the U.S.
UCC27524AQDRQ1 driving chips, UCC27524AQDRQ1 driving chips are connect with reversed unit, for unipolarity square wave
Signal VP1, VP2 processing obtains phase and differs 180 ° of the pulse signal with very high pull current and sink current, transformer,
It is connect with driving unit with primary coil, the first secondary coil and the second secondary coil, primary coil, there is the first secondary coil output to draw
Foot 5,6, the second secondary coil have output pin 3,4, upper bridge arm unit, including resistance R2, resistance R3, resistance R6, two parallel connections
Diode D2, capacitance C8, diode D3 and Metal-Oxide Semiconductor field-effect tube Q1, the first secondary coil it is defeated
Go out after pin 5 is connected with resistance R2 to be connected to the grid of Metal-Oxide Semiconductor field-effect tube Q1, and then and signal output end
Connection, the output pin 5 of the first secondary coil is also connect with two diode D2 in parallel, and is sequentially connected in series resistance R3 and resistance R6
Be connected to the source electrode of Metal-Oxide Semiconductor field-effect tube Q1 afterwards, and then connect with signal output end, the first secondary coil it is defeated
Go out after pin 6 is connect with the source electrode of Metal-Oxide Semiconductor field-effect tube Q1 and be connected to signal output end, capacitance C8 and
One end is connected to after resistance R2 after diode D3 parallel connections, and the other end is connected to after resistance R6, Metal-Oxide Semiconductor field
Effect pipe Q1 is connect with third power supply, lower bridge arm unit, including resistance R9, resistance R10, resistance R11, two diodes in parallel
D5, capacitance C11, diode D6 and Metal-Oxide Semiconductor field-effect tube Q2, the output pin 4 of the second secondary coil
It is connected to the grid of Metal-Oxide Semiconductor field-effect tube Q2 after connecting with resistance R9, and then is connect with signal output end, the
The output pin 4 of two secondary coils is also connect with two diode D5 in parallel, and is connected after being sequentially connected in series resistance R10 and resistance R11
It is connected to the source electrode of Metal-Oxide Semiconductor field-effect tube Q2, and then is connect with signal output end, the output of the second secondary coil is drawn
Foot 3 is connected to signal output end, capacitance C11 and two after being connect with the source electrode of Metal-Oxide Semiconductor field-effect tube Q3
One end is connected to after resistance R9 after pole pipe D6 parallel connections, and the other end is connected to after resistance R11, Metal-Oxide Semiconductor field
Effect pipe Q2 is connect with third power supply, and signal output end is used to export the unipolar high voltage square-wave signal of high pressure Slew Rate, wherein gold
The ac square wave signal of category-oxide semiconductor field effect pipe Q1, Q2 differs 180 ° with width with frequency phase, metal-oxide half
The quick alternate conduction of conductor field-effect tube Q1, Q2, includes the following steps：Step 1, signal input part input outside it is to be amplified
Signal；Step 2, reversed unit are handled to obtain that two-way voltage magnitude is identical, frequency is identical, phase phase to signal to be amplified
Poor 180 ° unipolarity square-wave signal VP1, VP2；Step 3, driving unit is to unipolarity square-wave signal VP1 and unipolarity square wave
Signal VP2 processing obtains the pulse signal with very high pull current and sink current that phase differs 180 °；Step 4, transformation
Primary coil return pulse signal of device, the first secondary coil of transformer and the identical exchange side of the second secondary coil output two-way
Wave signal；Step 5, ac square wave signal make bridge arm unit and the quick alternate conduction of lower bridge arm unit；Step 6, signal are defeated
Outlet exports the unipolar high voltage square-wave signal of high pressure Slew Rate.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that：Wherein, it waits for
Amplified signal is unipolarity square wave, and the variable voltage amplitude of unipolarity square wave is 2.5V~5V, and the frequency of unipolarity square wave is less than
Or it is equal to 1MHz.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that, further include：
Filtering, shaping unit, the level voltage conversion chip SN74LVIT34DBVR with the production of get Jie electronics corporations of the U.S., the level
Voltage conversion chip SN74LVIT34DBVR have input pin 2,3,5 and output pin 4, signal input part have pin 1,
2, the input pin 2 of level voltage conversion chip SN74LVIT34DBVR is connect with the pin 2 of signal input part, and level voltage turns
The input pin 3 for changing chip SN74LVIT34DBVR is connect with the pin 1 of signal input part, level voltage conversion chip
The input pin 5 of SN74LVIT34DBVR is connect with second source, the output of level voltage conversion chip SN74LVIT34DBVR
Pin 4 is connect with reversed unit, level voltage conversion chip SN74LVIT34DBVR be used for it is signal to be amplified be filtered, it is whole
Shape obtains unipolarity square-wave signal VP1.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that：Wherein, instead
There is the reverser chip SN74AHC1G14DBVR that conducting wire and get Jie electronics corporations of the U.S. produce, one end of conducting wire to unit
It is connect with the output pin 4 of level voltage conversion chip SN74LVIT34DBVR, the other end drives core with UCC27524AQDRQ1
Piece connects, and reverser chip SN74AHC1G14DBVR has input pin 2,5 and output pin 4, reverser chip
The input pin 2 of SN74AHC1G14DBVR is connect with the output pin 4 of level voltage conversion chip SN74LVIT34DBVR, instead
Connect to the input pin 5 of device chip SN74AHC1G14DBVR with second source, the output pin 4 of reverser chip U3 with
UCC27524AQDRQ1 driving chips connect, and reverser chip SN74AHC1G14DBVR is for handling unipolarity square-wave signal VP1
Obtain unipolarity square-wave signal VP2.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that：Wherein,
There is UCC27524AQDRQ1 driving chips input pin 1,2,4 and output pin 5,7, primary coil of transformer to have input
Pin 1,2, UCC27524AQDRQ1 driving chips input pin 1 connect with the first power supply, UCC27524AQDRQ1 drive core
The input pin 2 of piece is connect with the other end of conducting wire, input pin 4 and the reverser chip of UCC27524AQDRQ1 driving chips
The output pin 4 of SN74AHC1G14DBVR connects, and the output pins 7 of UCC27524AQDRQ1 driving chips is defeated with primary coil
Enter the connection of pin 1, the output pin 5 of UCC27524AQDRQ1 driving chips is connect with the input pin 2 of primary coil.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that：Wherein, become
Primary coil of depressor, the first secondary coil, the second secondary coil coil ratio be 1:1:1.
In the amplification method of unipolarity square-wave signal provided by the invention, it can also have the feature that：Wherein,
One power supply is VCC9V voltages, and second source is the VCC5V voltages that the first power supply exports after voltage regulation unit is handled, third electricity
Source is the VCC100V voltages that the first power supply exports after boosting unit is handled.
The effect of invention
According to the amplification method of unipolarity square-wave signal according to the present invention, this method uses portable high-pressure amplifier
Unipolarity square-wave signal is amplified, portable high-pressure amplifier includes reversed unit, driving unit, transformer, upper bridge arm
Unit and lower bridge arm unit, reversed unit to it is signal to be amplified handled to obtain two-way voltage magnitude is identical, frequency is identical,
Phase differs 180 ° unipolarity square-wave signal VP1, VP2, and driving unit has the production of get Jie electronics corporations of the U.S.
UCC27524AQDRQ1 driving chips, the driving chip can export the pulse signal with very high pull current and sink current, should
Pulse signal has powerful driving capability, primary coil return pulse signal of transformer, the first secondary coil of transformer and the
Two secondary coils export the identical ac square wave signal of two-way, and ac square wave signal keeps bridge arm unit and lower bridge arm unit fast
Fast alternate conduction finally exports the unipolar high voltage square-wave signal of high pressure Slew Rate.Portable high-pressure amplification involved by this method
Device is small, portable.The unipolar high voltage square-wave signal slew rate exported according to this method is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of portable high-pressure amplifier in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of voltage regulation unit in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of boosting unit in the embodiment of the present invention；
Fig. 4 be in the embodiment of the present invention filtering, shaping unit and reversed unit structural schematic diagram；
Fig. 5 is the structural schematic diagram of driving unit and transformer in the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of upper bridge arm unit and lower bridge arm unit in the embodiment of the present invention；And
Fig. 7 is that the input signal and output signal of the amplification method of unipolarity square-wave signal are shown in the embodiment of the present invention
It is intended to.
Specific implementation mode
It is real below in order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand
Example combination attached drawing is applied to be specifically addressed the amplification method of unipolarity square-wave signal of the present invention.
Fig. 1 is the structural schematic diagram of portable high-pressure amplifier in the embodiment of the present invention.
As shown in Figure 1, portable high-pressure amplifier 10 includes the first power supply 11, voltage regulation unit 12, second source 13, boosting
Unit 14, third power supply 15, signal input part 16, filtering, shaping unit 17, reversed unit 18, driving unit 19, transformer
20, upper bridge arm unit 21, lower bridge arm unit 22 and signal output end 23.
First power supply 11 is the external 9V DC voltages (VCC9V) provided.
Fig. 2 is the structural schematic diagram of voltage regulation unit in the embodiment of the present invention.
As shown in Fig. 2, including TL431 power supply voltage stabilizing chips in voltage regulation unit 12.TL431 power supplys voltage stabilizing chip and the first electricity
Source 11 connects, for exporting second source 13.Second source 13 is the 5V DC voltages (VCC5V) of stable low ripple.
Fig. 3 is the structural schematic diagram of boosting unit in the embodiment of the present invention.
As shown in figure 3, boosting unit 14 is connect with the first power supply 11, for exporting third power supply 15.Third power supply 15 is
100V DC voltages (VCC100V).
Signal input part 16 with external voltage is 9V, the DC power supply that electric current is 2A connect, for inputting waiting for for outside
Amplified signal.Signal to be amplified is unipolarity square wave, and the variable voltage amplitude of the unipolarity square wave is 2.5V~5V, and frequency is less than
Or it is equal to 1MHz.In the present embodiment, signal to be amplified is voltage magnitude is 3.3V, frequency is 75KHz unipolarity square wave.Letter
Number input terminal 16 has pin 1 and pin 2.
Fig. 4 be in the embodiment of the present invention filtering, shaping unit and reversed unit structural schematic diagram.
As shown in figure 4, filtering, shaping unit 17, the level voltage conversion chip with the production of get Jie electronics corporations of the U.S.
SN74LVIT34DBVR, level voltage conversion chip SN74LVIT34DBVR have input pin 2,3,5 and output pin
4.The input pin 2 of level voltage conversion chip SN74LVIT34DBVR is connect with the pin 2 of signal input part, and level voltage turns
The input pin 3 for changing chip SN74LVIT34DBVR is connect with the pin 1 of signal input part 16, level voltage conversion chip
The input pin 5 of SN74LVIT34DBVR is connect with second source 20.Level voltage conversion chip SN74LVIT34DBVR can be with
To it is signal to be amplified be filtered, shaping obtains unipolarity square-wave signal VP1.In the present embodiment, unipolarity square-wave signal VP1
For the unipolarity square wave that voltage magnitude is 5V, frequency is 75KHz.
Reversed unit 18 has the reverser chip that conducting wire and get Jie electronics corporations of the U.S. produce
SN74AHC1G14DBVR.One end of conducting wire is connect with the output pin 4 of level voltage conversion chip SN74LVIT34DBVR.Instead
There is input pin 2,5 and output pin 4 to device chip SN74AHC1G14DBVR.Reverser chip
The input pin 2 of SN74AHC1G14DBVR is connect with the output pin 4 of level voltage conversion chip SN74LVIT34DBVR, instead
It is connect to the input pin 5 of device chip SN74AHC1G14DBVR with second source 20.Reverser chip SN74AHC1G14DBVR
Unipolarity square-wave signal VP2 is obtained for handling unipolarity square-wave signal VP1.Unipolarity square-wave signal VP2 and unipolarity square wave
Signal VP1 voltage magnitudes are identical, frequency is identical, and phase differs 180 °, that is to say, that if unipolarity square-wave signal VP1 is expressed as
VP+, then unipolarity square-wave signal VP2 be expressed as VP-.
The input pin 2 of reverser chip SN74AHC1G14DBVR and level voltage conversion chip SN74LVIT34DBVR
Output pin 4 between be also in series with current-limiting resistance R4, and one end of conducting wire is connected to after R4.Current-limiting resistance R4 can be protected
The stability of protection circuit work.
Fig. 5 is the structural schematic diagram of driving unit and transformer in the embodiment of the present invention
As shown in figure 4, driving unit 19 has the UCC27524AQDRQ1 driving chips of get Jie electronics corporations of U.S. production,
The driving chip is binary channels, high speed, lowside gate driving voltage limiter, can effectively drive metal-oxide and partly lead
Body field-effect tube power switch.And there are two the internal communications that interchannel matches by UCC27524AQDRQ1 driving chip devices spy
Delay, this characteristic make this driving chip be very suitable for the application for having stringent clocking requirement for bigrid driving.
UCC27524AQDRQ1 driving chips have input pin 1,2,4 and output pin 5,7.UCC27524AQDRQ1
The input pin 1 of driving chip is connect with the first power supply 10.The input pin 2 of UCC27524AQDRQ1 driving chips and conducting wire
The other end connects, for receiving unipolarity square-wave signal VP1.The input pin 4 of UCC27524AQDRQ1 driving chips with it is reversed
The output pin 4 of device chip SN74AHC1G14DBVR connects, for receiving unipolarity square-wave signal VP2.UCC27524AQDRQ1
Driving chip unipolarity square-wave signal VP1, VP2 processing can be obtained two-way phase differ 180 ° have very Gao La electricity
The pulse signal of stream and sink current.The pulse signal has very strong driving capability.
Transformer 20 has primary coil, the first secondary coil and the second secondary coil.Primary coil, the first secondary coil and second
The coil ratio of secondary coil is 1:1:1.Primary coil has input pin 1,2.The input pin 1 of primary coil with
The output pin 7 of UCC27524AQDRQ1 driving chips connects, and the input pin 2 and UCC27524AQDRQ1 of primary coil drives core
The output pin 5 of piece connects.Ac square wave signal at primary coil, the first secondary coil and the second secondary coil is identical,
The pulse signal of 180 ° of pull current and sink current is differed for phase.First secondary coil has output pin 5,6, the second secondary coil
With output pin 3,4.
Fig. 6 is the structural schematic diagram of upper bridge arm unit and lower bridge arm unit in the embodiment of the present invention.
As shown in fig. 6, upper bridge arm unit 21 include resistance R2, resistance R3, resistance R6, two diode D2 in parallel, every
Straight capacitance C8, diode D3 and Metal-Oxide Semiconductor field-effect tube Q1.
The output pin 5 of first secondary coil is connected to Metal-Oxide Semiconductor field-effect tube Q1 after connecting with resistance R2
Grid, and then connect with signal output end 22.
The output pin 5 of first secondary coil is also connect with two diode D2 in parallel, and is sequentially connected in series resistance R3 and electricity
It is connected to the source electrode of Metal-Oxide Semiconductor field-effect tube Q1 after resistance R6, and then is connect with signal output end 22.
The output pin 6 of first secondary coil is connected to after being connect with the source electrode of Metal-Oxide Semiconductor field-effect tube Q1
Signal output end 22.
One end is connected to after resistance R2 after capacitance C8 and diode D3 parallel connections, the other end be connected to resistance R6 it
Afterwards.
Metal-Oxide Semiconductor field-effect tube Q1 is connect with third power supply.Metal-Oxide Semiconductor field-effect tube Q1
The time of conducting is more than the time of shutdown.
Lower bridge arm unit 22 includes resistance R9, resistance R10, resistance R11, two diode D5 in parallel, capacitances
C11, diode D6 and Metal-Oxide Semiconductor field-effect tube Q2.
The output pin 4 of second secondary coil is connected to Metal-Oxide Semiconductor field-effect tube Q2 after connecting with resistance R9
Grid, and then connect with signal output end 22.
The output pin 4 of second secondary coil is also connect with two diode D5 in parallel, and is sequentially connected in series resistance R10 and electricity
It is connected to the source electrode of Metal-Oxide Semiconductor field-effect tube Q2 after resistance R11, and then is connect with signal output end 22.
The output pin 3 of second secondary coil is connected to after being connect with the source electrode of Metal-Oxide Semiconductor field-effect tube Q3
Signal output end,
One end is connected to after resistance R9 after capacitance C11 and diode D6 parallel connections, the other end be connected to resistance R11 it
Afterwards.
Metal-Oxide Semiconductor field-effect tube Q2 is connect with third power supply.Metal-Oxide Semiconductor field-effect tube Q2
The time of conducting is more than the time of shutdown.
The ac square wave signal voltage magnitude of Metal-Oxide Semiconductor field-effect tube Q1, Q2 is identical, frequency is identical, phase
180 ° of position difference.There is no simultaneously by Metal-Oxide Semiconductor field-effect tube Q1 and Metal-Oxide Semiconductor field-effect tube Q2
At the time of conducting, the quick alternate conduction under the driving of the ac square wave signal of strong driving force.
Signal output end 23 is connected to the node between Metal-Oxide Semiconductor field-effect tube Q1, Q2, for exporting height
The unipolar high voltage square-wave signal of slew rate.
It is additionally provided with use between node between signal output end 23 and Metal-Oxide Semiconductor field-effect tube Q1, Q2
In the inductance coil L1 of isolation alternating current.
Use the amplification for the unipolarity square-wave signal that portable high-pressure amplifier 100 is amplified unipolarity square-wave signal
Method includes the following steps：
Step 1, signal input part 16 input that external signal to be amplified (voltage magnitude 3.3V, frequency are 75KHz's
Unipolarity square wave).
Step 2, filtering, shaping unit 17 to it is signal to be amplified be filtered, shaping obtains unipolarity square-wave signal VP1
(the unipolarity square wave that voltage magnitude 5V, frequency are 75KHz).
Step 3, reversed unit 18 obtain unipolarity square-wave signal VP1 processing that two-way voltage magnitude is identical, frequency
Identical, phase differs 180 ° unipolarity square-wave signal VP1, VP2.
Step 4, driving unit 19 obtain phase to unipolarity square-wave signal VP1 and unipolarity square-wave signal VP2 processing
Position differs 180 ° of the pulse signal with very high pull current and sink current.
Step 5, primary coil return pulse signal of transformer 20, the first secondary coil and the second secondary coil of transformer are defeated
Go out the identical ac square wave signal of two-way (pulse signal).
Step 6, ac square wave signal make bridge arm unit and the quick alternate conduction of lower bridge arm unit.
Step 7, signal output end export the unipolar high voltage square-wave signal of high pressure Slew Rate.
Fig. 7 is the input signal obtained using the amplification method of unipolarity square-wave signal in the embodiment of the present invention and output
The schematic diagram of signal.
As shown in fig. 7, channel C H1 is signal to be amplified, voltage magnitude 5V, channel C H2 is amplified signal,
Voltage magnitude is 107V (due to measurement error, theoretical value 100V), passes through unipolarity square-wave signal as can be seen from Figure
The unipolarity square-wave signal of small magnitude can be enlarged into the unipolar high voltage square-wave signal of high pressure Slew Rate by amplification method.Embodiment
Effect
The amplification method of unipolarity square-wave signal involved by the present embodiment, this method are amplified using portable high-pressure
Device is amplified unipolarity square-wave signal, and portable high-pressure amplifier includes reversed unit, driving unit, transformer, upper bridge
Arm unit and lower bridge arm unit, reversed unit are handled to obtain that two-way voltage magnitude is identical, frequency phase to signal to be amplified
Same, phase differs 180 ° unipolarity square-wave signal VP1, VP2, and driving unit has the production of get Jie electronics corporations of the U.S.
UCC27524AQDRQ1 driving chips, the driving chip can export the pulse signal with very high pull current and sink current, should
Pulse signal has powerful driving capability, primary coil return pulse signal of transformer, the first secondary coil of transformer and the
Two secondary coils export the identical ac square wave signal of two-way, and ac square wave signal keeps bridge arm unit and lower bridge arm unit fast
Fast alternate conduction finally exports the unipolar high voltage square-wave signal of high pressure Slew Rate.Portable high-pressure amplification involved by this method
Device is small, portable.The unipolar high voltage square-wave signal slew rate exported according to this method is high.
Metal-oxide can be made partly to lead in addition, upper bridge arm unit includes resistance R2 and two diode D2 in parallel
The time of body field-effect tube Q1 conductings is more than the time of shutdown, and lower bridge arm unit includes resistance R9 and two diodes in parallel
The time that D5 can be such that Metal-Oxide Semiconductor field-effect tube Q2 is connected is more than the time of shutdown.So metal-oxide half
There is no at the time of simultaneously turning on for conductor field-effect tube Q1, Q2.
Further, reversed unit has conducting wire and reverser chip SN74AHC1G14DBVR, can will signal all the way
Unipolarity square-wave signal VP1 becomes that two-way voltage magnitude is identical, frequency is identical, phase differs 180 ° of unipolarity square-wave signal
VP1、VP2.Also, reversed unit is small.
Further, UCC27524AQDRQ1 driving chips are binary channels, high speed, lowside gate driving voltage limiter,
Metal-Oxide Semiconductor field-effect tube power switch can be effectively driven.And UCC27524AQDRQ1 driving chip devices
The special internal communication delay to match there are two interchannel, this characteristic make this driving chip be very suitable for for bigrid
Driving has the application of stringent clocking requirement.
Further, transformer has primary coil, the first secondary coil, the second secondary coil, and primary coil, the first by-pass
It encloses, the coil ratio of the second secondary coil is 1:1:1.On the one hand realized by transformer input signal and output signal every
From on the other hand the first secondary coil and the second secondary coil can respectively export identical with primary coil with very strong driving force all the way
Ac square wave signal.
Further, the first power supply is VCC9V voltages, and second source is that the first power supply exports after voltage regulation unit is handled
VCC5V voltages, third power supply is the VCC100V voltages that are exported after boosting unit is handled of the first power supply.All power supplies
The structure of power supply is simple, small, and can meet the needs of portable amplifier.
The above embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. a kind of amplification method of unipolarity square-wave signal, for the unipolarity square-wave signal of small magnitude to be enlarged into high pressure Slew Rate
Unipolar high voltage square-wave signal, which is characterized in that the unipolarity square-wave signal is carried out using portable high-pressure amplifier
Amplification,
The portable high-pressure amplifier includes：
Signal input part, for inputting the signal to be amplified of outside,
Reversed unit is connect with the signal input part, for signal to be amplified being handled to obtain two-way voltage amplitude to described
It is worth that identical, frequency is identical, phase differs 180 ° unipolarity square-wave signal VP1, VP2,
Driving unit, the UCC27524AQDRQ1 driving chips with the production of get Jie electronics corporations of the U.S. are described
UCC27524AQDRQ1 driving chips are connect with the reversed unit, for being carried out to described unipolarity square-wave signal VP1, VP2
Processing obtains the pulse signal with very high pull current and sink current that phase differs 180 °,
There is transformer primary coil, the first secondary coil and the second secondary coil, described primary coil to be connect with the driving unit,
There is first secondary coil output pin 5,6, second secondary coil to have output pin 3,4,
Upper bridge arm unit, including resistance R2, resistance R3, resistance R6, two diode D2 in parallel, capacitance C8, diodes
D3 and Metal-Oxide Semiconductor field-effect tube Q1,
The output pin 5 of first secondary coil is connected to the Metal-Oxide Semiconductor field after connecting with the resistance R2
The grid of effect pipe Q1, and then connect with signal output end,
The output pin 5 of first secondary coil is also connect with two diode D2 in parallel, and is sequentially connected in series the electricity
Be connected to the source electrode of the Metal-Oxide Semiconductor field-effect tube Q1 after resistance R3 and the resistance R6, so with the signal
Output end connects,
The output pin 6 of first secondary coil connects after being connect with the source electrode of the Metal-Oxide Semiconductor field-effect tube Q1
It is connected to the signal output end,
One end is connected to after the resistance R2 after the capacitance C8 and the diode D3 parallel connections, and the other end is connected to institute
After stating resistance R6,
The Metal-Oxide Semiconductor field-effect tube Q1 is connect with third power supply,
Lower bridge arm unit, including resistance R9, resistance R10, resistance R11, two diode D5 in parallel, capacitance C11, two poles
Pipe D6 and Metal-Oxide Semiconductor field-effect tube Q2,
The output pin 4 of second secondary coil is connected to the Metal-Oxide Semiconductor field after connecting with the resistance R9
The grid of effect pipe Q2, and then connect with signal output end,
The output pin 4 of second secondary coil is also connect with two diode D5 in parallel, and is sequentially connected in series the electricity
Be connected to the source electrode of the Metal-Oxide Semiconductor field-effect tube Q2 after resistance R10 and the resistance R11, so with the letter
The connection of number output end,
The output pin 3 of first secondary coil connects after being connect with the source electrode of the Metal-Oxide Semiconductor field-effect tube Q3
It is connected to the signal output end,
One end is connected to after the resistance R9 after the capacitance C11 and the diode D6 parallel connections, and the other end is connected to
After the resistance R11,
The Metal-Oxide Semiconductor field-effect tube Q2 is connect with third power supply,
The signal output end is used to export the unipolar high voltage square-wave signal of high pressure Slew Rate,
Wherein, the ac square wave signal of Metal-Oxide Semiconductor field-effect tube Q1, Q2 is differed with width with frequency phase
180 °,
When the Metal-Oxide Semiconductor field-effect tube Q1 is connected, the Metal-Oxide Semiconductor field-effect tube Q2 is closed
Disconnected, when the Metal-Oxide Semiconductor field-effect tube Q1 is turned off, the Metal-Oxide Semiconductor field-effect tube Q2 is led
It is logical,
Include the following steps：
Step 1, it is signal to be amplified outside signal input part input；
Step 2, the reversed unit to it is described it is signal to be amplified handled to obtain two-way voltage magnitude is identical, frequency is identical,
Phase differs 180 ° unipolarity square-wave signal VP1, VP2；
Step 3, the driving unit is to the unipolarity square-wave signal VP1 and the unipolarity square-wave signal VP2 processing
Obtain the pulse signal with very high pull current and sink current that phase differs 180 °；
Described primary coil of step 4, the transformer receives the pulse signal, first secondary coil of the transformer
The identical ac square wave signal of two-way is exported with second secondary coil；
Step 5, the ac square wave signal make the upper bridge arm unit and the quick alternate conduction of lower bridge arm unit；
Step 6, the unipolar high voltage square-wave signal of the signal output end output high pressure Slew Rate.
2. the amplification method of unipolarity square-wave signal according to claim 1, it is characterised in that：
Wherein, it is described it is signal to be amplified be unipolarity square wave,
The variable voltage amplitude of the unipolarity square wave is 2.5V~5V,
The frequency of the unipolarity square wave is less than or equal to 1MHz.
3. the amplification method of unipolarity square-wave signal according to claim 1, which is characterized in that further include：
Filtering, shaping unit, the level voltage conversion chip SN74LVIT34DBVR with the production of get Jie electronics corporations of the U.S. should
Level voltage conversion chip SN74LVIT34DBVR has input pin 2,3,5 and output pin 4,
The signal input part has pin 1,2,
The input pin 2 of the level voltage conversion chip SN74LVIT34DBVR is connect with the pin 2 of the signal input part,
The input pin 3 of the level voltage conversion chip SN74LVIT34DBVR is connect with the pin 1 of the signal input part,
The input pin 5 of the level voltage conversion chip SN74LVIT34DBVR is connect with second source,
The output pin 4 of the level voltage conversion chip SN74LVIT34DBVR is connect with the reversed unit,
The level voltage conversion chip SN74LVIT34DBVR be used for it is described it is signal to be amplified be filtered, shaping obtains institute
State unipolarity square-wave signal VP1.
4. the amplification method of unipolarity square-wave signal according to claim 3, it is characterised in that：
Wherein, the reversed unit has the reverser chip that conducting wire and get Jie electronics corporations of the U.S. produce
SN74AHC1G14DBVR,
One end of the conducting wire is connect with the output pin 4 of the level voltage conversion chip SN74LVIT34DBVR, the other end
It is connect with the UCC27524AQDRQ1 driving chips,
The reverser chip SN74AHC1G14DBVR has input pin 2,5 and output pin 4,
The input pin 2 of the reverser chip SN74AHC1G14DBVR and the level voltage conversion chip
The output pin 4 of SN74LVIT34DBVR connects,
The input pin 5 of the reverser chip SN74AHC1G14DBVR is connect with the second source,
The output pin 4 of the reverser chip U3 is connect with the UCC27524AQDRQ1 driving chips,
The reverser chip SN74AHC1G14DBVR obtains the unipolarity for handling the unipolarity square-wave signal VP1
Square-wave signal VP2.
5. the amplification method of unipolarity square-wave signal according to claim 1 or 4, it is characterised in that：
Wherein, the UCC27524AQDRQ1 driving chips have input pin 1,2,4 and output pin 5,7,
Described primary coil of the transformer has input pin 1,2,
The input pin 1 of the UCC27524AQDRQ1 driving chips is connect with the first power supply,
The input pin 2 of the UCC27524AQDRQ1 driving chips is connect with the other end of the conducting wire,
The input pin 4 of the UCC27524AQDRQ1 driving chips is defeated with the reverser chip SN74AHC1G14DBVR's
Go out the connection of pin 4,
The output pin 7 of the UCC27524AQDRQ1 driving chips is connect with the input pin 1 of described primary coil,
The output pin 5 of the UCC27524AQDRQ1 driving chips is connect with the input pin 2 of described primary coil.
6. the amplification method of unipolarity square-wave signal according to claim 1, it is characterised in that：
Wherein, described primary coil of the transformer, first secondary coil, second secondary coil coil ratio be 1:
1:1。
7. the amplification method of the unipolarity square-wave signal according to any one in claim 1,3,4,5, feature exist
In：
Wherein, first power supply is VCC9V voltages,
The second source is the VCC5V voltages that first power supply exports after voltage regulation unit is handled,
The third power supply is the VCC100V voltages that first power supply exports after boosting unit is handled.
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