CN208924114U - A kind of driving circuit - Google Patents
A kind of driving circuit Download PDFInfo
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- CN208924114U CN208924114U CN201821906449.4U CN201821906449U CN208924114U CN 208924114 U CN208924114 U CN 208924114U CN 201821906449 U CN201821906449 U CN 201821906449U CN 208924114 U CN208924114 U CN 208924114U
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Abstract
The utility model relates to a kind of driving circuit, the driving circuit includes: voltage reduction module, and the input terminal of the voltage reduction module receives input voltage, and the voltage reduction module is adapted to provide for load step-down；Voltage stabilizing module, the input terminal of the Voltage stabilizing module connect the output end of the voltage reduction module, and the Voltage stabilizing module is suitable for carrying out clamper to the voltage of the output end of the voltage reduction module to obtain clamp voltage；Module is followed, it is described that module is followed to be suitable for receiving the clamp voltage, the clamp voltage is followed to export conversion voltage.Technical solutions of the utility model can effectively simplify circuit structure, save circuit cost.
Description
Technical field
The utility model relates to electronic circuit technology field more particularly to a kind of driving circuits.
Background technique
With the development that science and technology is with rapid changepl. never-ending changes and improvements, the function of electronic equipment is stronger and stronger, for used power supply
Higher requirements are also raised.Under normal conditions, the supply voltage of power supply can not exactly match electronic equipment and work normally institute
Required voltage, therefore just need to be supplied to the electronic equipment after converting supply voltage using driving circuit.
The driving circuit in the prior art that high pressure is converted to low pressure is usually made of a large amount of circuit devcies, has circuit
Area is big, inherent shortcoming at high cost and mutual matching difference.In addition, existing driving circuit is highly susceptible to temperature
The interference of variation or mains fluctuations, causes output voltage unstable, and precision is lower, has seriously affected electronic equipment
It works normally, or even the service life of electronic equipment can be shortened.
Therefore, in order to adapt to demand of the electronic equipment to power supply, it is high how to provide a kind of output voltage stability, and
Driving circuit at low cost is current urgent problem to be solved.
Utility model content
The technical issues of the utility model solves is how to provide a kind of output voltage stability high, and driving at low cost
Circuit.
In order to solve the above technical problems, the utility model provides a kind of driving circuit, the driving circuit includes: decompression mould
The input terminal of block, the voltage reduction module receives input voltage, and the voltage reduction module is adapted to provide for load step-down；Voltage stabilizing module, institute
The input terminal for stating Voltage stabilizing module connects the output end of the voltage reduction module, and the Voltage stabilizing module is suitable for the defeated of the voltage reduction module
The voltage of outlet carries out clamper to obtain clamp voltage；Module is followed, it is described that module is followed to be suitable for receiving the clamp voltage, it is right
The clamp voltage is followed to export conversion voltage.
Optionally, the voltage reduction module includes: resistance, and the first end of the resistance receives the input voltage, the electricity
The second end of resistance is the output end of the voltage reduction module.
Optionally, the Voltage stabilizing module includes: zener diode, and the zener diode is suitable for the voltage reduction module
The voltage of output end carries out clamper；First compensating module, first compensating module are suitable for carrying out temperature to the zener diode
Spend characteristic compensation；Second compensating module, second compensating module are suitable for following module to carry out voltage compensation to described.
Optionally, the cathode of the zener diode connects the output end of the voltage reduction module；First compensating module
Including the first triode, the base stage of first triode connects the anode of the zener diode, first triode
Collector connects the cathode of the zener diode；The input terminal of second compensating module connects the hair of first triode
Emitter-base bandgap grading, the output end ground connection of second compensating module.
Optionally, first compensating module include the first triode, first triode collector connection described in
The output end of voltage reduction module, the base stage of first triode connect the collector of first triode；Two pole of pressure stabilizing
The cathode of pipe connects the emitter of first triode；The input terminal of second compensating module connects the zener diode
Anode, second compensating module output end ground connection.
Optionally, first compensating module include the first triode, first triode collector connection described in
The output end of voltage reduction module, the base stage of first triode connect the collector of first triode；Second compensation
The input terminal of module connects the emitter of first triode；The cathode connection of the zener diode the second compensation mould
The output end of block, the plus earth of the zener diode.
Optionally, the cathode of the zener diode connects the output end of the voltage reduction module；Second compensating module
Input terminal connect the anode of the zener diode；First compensating module includes the first triode, the one or three pole
The collector of pipe connects the output end of second compensating module, and the base stage of first triode connects first triode
Collector, first triode emitter ground connection.
Optionally, the cathode of the zener diode connects the output end of the voltage reduction module；First compensating module
Including the first triode, the collector of first triode connects the anode of the zener diode, first triode
Base stage connect the collector of first triode；The input terminal of second compensating module connects first triode
Emitter, the output end ground connection of second compensating module.
Optionally, the input terminal of second compensating module connects the output end of the voltage reduction module；Two pole of pressure stabilizing
The cathode of pipe connects the output end of second compensating module；First compensating module include the first triode, described first
The collector of triode connects the anode of the zener diode, and the base stage of first triode connects first triode
Collector, first triode emitter ground connection.
Optionally, the input terminal of second compensating module connects the output end of the voltage reduction module；First compensation
Module includes the first triode, and the collector of first triode connects the output end of second compensating module, and described the
The base stage of one triode connects the collector of first triode；The cathode of the zener diode connects the one or three pole
The emitter of pipe, the plus earth of the zener diode.
Optionally, second compensating module includes the first transistor, and described to follow module include second transistor；It is described
The drain electrode of the first transistor is the input terminal of second compensating module, and the grid connection described first of the first transistor is brilliant
The drain electrode of body pipe, the source electrode of the first transistor are the output end of second compensating module；The grid of the second transistor
Pole connects the output end of the voltage reduction module, and the drain electrode of the second transistor receives the input voltage, second crystal
The source electrode of pipe is the output end for following module；The first transistor is identical with the second transistor specification
Optionally, second compensating module includes the second triode, and described to follow module include third transistor；It is described
The input terminal of extremely described second compensating module of the current collection of second triode, the base stage connection described second of second triode
The collector of triode, the output end of extremely described second compensating module of transmitting of second triode；Three or three pole
The base stage of pipe connects the output end of the voltage reduction module, and the collector of the third transistor receives the input voltage, described
The extremely described output end for following module of the transmitting of third transistor；Second triode and the third transistor specification phase
Together.
Optionally, the substrate of first triode connects the potential minimum that first triode works normally tolerance.
Optionally, the substrate of second triode connects the potential minimum that second triode works normally tolerance,
And/or the substrate of the third transistor connects the potential minimum that the third transistor works normally tolerance.
Optionally, the substrate of the first transistor connects the potential minimum that the first transistor works normally tolerance,
And/or the substrate of the second transistor connects the potential minimum that the second transistor works normally tolerance.
Compared with prior art, the technical solution of the utility model has the advantages that
The driving circuit of technical solutions of the utility model includes voltage reduction module, Voltage stabilizing module, follows module, the decompression mould
The input terminal of block receives input voltage, and the voltage reduction module is adapted to provide for load step-down；The input terminal of the Voltage stabilizing module connects
The output end of the voltage reduction module, the Voltage stabilizing module are suitable for carrying out clamper to the voltage of the output end of the voltage reduction module to obtain
To clamp voltage；It is described that module is followed to be suitable for receiving the clamp voltage, the clamp voltage is followed to export conversion
Voltage.It is effectively simplified circuit structure as a result, has saved circuit cost, and the conversion voltage exported is not by input voltage wave
Dynamic influence improves the stability of output voltage, reduces harmonic wave and the radiation of output voltage.
Further, the Voltage stabilizing module of the utility model includes: zener diode, the first compensating module, the second compensating module,
The zener diode is suitable for carrying out clamper to the voltage of the output end of the voltage reduction module；First compensating module be suitable for pair
The zener diode carries out temperature characteristic compensation；Second compensating module is suitable for following module to carry out voltage benefit to described
It repays.It as a result, only can be so that output by the cooperation of the zener diode, the first compensating module and the second compensating module
Conversion voltage is not acted upon by temperature changes, and improves the reliability and application scenarios of circuit, has advanced optimized circuit cost.
Further, second compensating module of the utility model includes the first transistor, described to follow module brilliant including second
Body pipe.At work due to transistor, only more sons participate in conductive, and majority carrier density is influenced very little by factors such as temperature, radiation, because
And the temperature stability and capability of resistance to radiation of transistor are stronger, thus, it is possible to effectively improve circuit work stability and can
By property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first driving circuit of the utility model embodiment；
Fig. 2 is the structural schematic diagram of second of driving circuit of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the third driving circuit of the utility model embodiment；
Fig. 4 is the structural schematic diagram of the 4th kind of driving circuit of the utility model embodiment；
Fig. 5 is the structural schematic diagram of the 5th kind of driving circuit of the utility model embodiment；
Fig. 6 is the structural schematic diagram of the 6th kind of driving circuit of the utility model embodiment；
Fig. 7 is the structural schematic diagram of the 7th kind of driving circuit of the utility model embodiment.
Specific embodiment
It will be appreciated by those skilled in the art that in the prior art be converted to the driving circuit of low pressure usually by a large amount of electricity for high pressure
Road device is constituted, the inherent shortcoming of big, at high cost and mutual matching difference with circuit area.In addition, existing drive
Dynamic circuit is highly susceptible to the interference of temperature change or mains fluctuations, causes output voltage unstable, and precision is lower,
The normal work of electronic equipment has been seriously affected, or even the service life of electronic equipment can be shortened.
Technical solutions of the utility model provide a kind of driving circuit, by voltage reduction module in the driving circuit, steady
Die block and the cooperation for following module, to obtain the output voltage suitable for electronic device works.It is effectively simplified electricity as a result,
Line structure has saved circuit cost, and the conversion voltage exported is not influenced by input voltage fluctuation, improves output voltage
Stability, reduce harmonic wave and the radiation of output voltage.
It is understandable to enable the above-mentioned purpose, feature and beneficial effect of the utility model to become apparent, with reference to the accompanying drawing
Specific embodiment of the utility model is described in detail.Obviously, described embodiment is only the utility model one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, the protection scope of the utility model is belonged to.
Fig. 1 is the structural schematic diagram of the first driving circuit of the utility model embodiment.
In the present embodiment, the driving circuit can be integrated in the chips, be also possible to be made of various discrete devices
Board-level circuit.The driving circuit can receive high voltage, and it is load supplying that the high voltage, which is converted into low-voltage,.Institute
Stating load can be chip peripheral hardware or each class of electronic devices.
In addition, the driving circuit in the present embodiment can be individually used for also can integrate in other types for load supplying
Integrated circuit in, sub-circuit and other sub-circuits as buck functionality are used cooperatively, and the utility model embodiment is to described
The concrete application scene of driving circuit is with no restrictions.
With reference to Fig. 1, the driving circuit may include: voltage reduction module 1, and the input terminal of the voltage reduction module 1 receives input
Voltage V1, the voltage reduction module 1 are adapted to provide for load step-down；Voltage stabilizing module 2, the Voltage stabilizing module 2 input terminal connection described in
The output end of voltage reduction module 1, the Voltage stabilizing module 2 are suitable for carrying out clamper to the voltage of the output end of the voltage reduction module 1 to obtain
To clamp voltage VA；Follow module 3, it is described that module 3 is followed to be suitable for receiving the clamp voltage VA, to the clamp voltage VA into
Row is followed to export and convert voltage V2.
When it is implemented, the voltage reduction module 1 can receive with high-voltage value input voltage V1 (such as: 40V or
20V DC voltage), and the input voltage V1 is depressured by load step-down.The Voltage stabilizing module 2 can be described in clamper
The voltage of the output end of voltage reduction module 1, with the clamp voltage VA (such as: 5V or 6V DC voltage) for obtaining there is low voltage value.
Further, the voltage reduction module 1 may include resistance R, and the first end of the resistance R receives the input voltage
The second end of V1, the resistance R are the output end of the voltage reduction module 1.
Specifically, the resistance R can be fixed resistance value or the resistance of resistance value changeable terminals, to adapt to unused application
It needs.
Further, the resistance R can be by multiple resistor coupled in parallel or series connection and obtain.
Further, the Voltage stabilizing module 2 may include: zener diode D, and the zener diode D is suitable for described
The voltage of the output end of voltage reduction module 1 carries out clamper；First compensating module 21, first compensating module 21 are suitable for described steady
Diode D is pressed to carry out temperature characteristic compensation；Second compensating module 22, second compensating module 22 are suitable for following module to described
3 carry out voltage compensation.
Specifically, the zener diode D can be Zener diode regulator, and the cathode of the Zener diode regulator can
To export steady dc voltage, such as: DC voltage of the voltage value in 5V-6V.The cathode electricity of the Zener diode regulator
Pressure does not change with the fluctuation of the input voltage V1, thus, it is possible to guarantee the stabilization of the conversion voltage V2.
Further, the cathode of the zener diode D can connect the output end of the voltage reduction module 1；Described first
Compensating module 21 may include that the base stage of the first triode Q1, the first triode Q1 connects the sun of the zener diode D
The collector of pole, the first triode Q1 connects the cathode of the zener diode D；The input of second compensating module 22
End connects the emitter of the first triode Q1, the output end ground connection of second compensating module 22.
Preferably, the first triode Q1 can be NPN type triode.
Further, the substrate of the first triode Q1 connects the first triode Q1 and works normally the minimum of tolerance
Current potential.In a non-limiting embodiment, second compensating module 22 may include the first transistor M1, described to follow
Module 3 may include second transistor M2；The drain electrode of the first transistor M1 is the input terminal of second compensating module 22,
The grid of the first transistor M1 connects the drain electrode of the first transistor M1, and the source electrode of the first transistor M1 is described
The output end of second compensating module 22, the output end ground connection of the first transistor M1；The grid of the second transistor M2 connects
The output end of the voltage reduction module 1 is connect, the drain electrode of the second transistor M2 receives the input voltage V1, second crystal
The source electrode of pipe M2 is the output end for following module 3.Preferably, the first transistor M1 can be high-pressure N-shaped field-effect
Pipe, the second transistor M2 can be high-pressure N-shaped field-effect tube.The first transistor M1 and second transistor M2 is needed
Specification is identical, to realize the first transistor M1 to the voltage compensation of second transistor M2.
Further, the substrate of the first transistor M1 connects the first transistor M1 and works normally the minimum of tolerance
The substrate of current potential and/or the second transistor M2 connect the potential minimum that the second transistor M2 works normally tolerance.
In another non-limiting embodiment, second compensating module 22 may include that the second triode (is not schemed
Show), it is described that follow module 3 may include third transistor (not shown)；The current collection extremely described second of second triode
The input terminal of compensating module, the base stage of second triode connect the collector of second triode, the two or three pole
The output end of extremely described second compensating module of transmitting of pipe；The base stage of the third transistor connects the defeated of the voltage reduction module
Outlet, the collector of the third transistor receive the input voltage, and the transmitting of the third transistor is extremely described to be followed
The output end of module.Preferably, second triode can be NPN type triode, and the third transistor can be NPN type
Triode, second triode is identical as the size need of the third transistor, to realize second triode to
The voltage compensation of three triodes.
Further, the substrate of second triode connects the minimum electricity that second triode works normally tolerance
The substrate of position and/or the third transistor connects the potential minimum that the third transistor works normally tolerance.
It will be understood by those skilled in the art that due to the difference of manufacturing process, transistor is that voltage controls current device, three
Pole pipe is current control current device, therefore the amplifying power of transistor is poor for triode.When working in circuit,
The grid of transistor hardly current drawn, and its base stage always draws certain electric current, therefore crystal to triode at work
The input resistance of pipe is higher than the input resistance of triode.In addition, only mostly son participates in conduction to transistor, triode has how sub and few
Two kinds of carriers of son participate in conduction, and minority carrier density is affected by factors such as temperature, radiation, thus the temperature of transistor is stablized
Property and capability of resistance to radiation are better than triode.Therefore, those skilled in the art can select according to specific application
Second compensating module and the specific type of device for following module, the utility model embodiment are without limitation.
It continues to refer to figure 1, in the present embodiment, the calculation formula of the clamp voltage VA are as follows:
VA=VD+VBE+VGS1,
Wherein, VD is the voltage difference between the cathode of zener diode and anode, VBE be the first triode base stage with
Voltage difference between emitter, VGS1 are the voltage differences between the grid of the first transistor and source electrode.
The calculation formula for flowing through the electric current I of resistance R can indicate are as follows:
I=(V1-VA)/R
Wherein, V1 is the voltage value of the input voltage of driving circuit, and VA is the voltage value of clamp voltage, and R is voltage reduction module
Resistance resistance value.
In the present embodiment, by selecting suitable resistance value for resistance R, the electric current I for flowing through resistance R can control certain
In range.In addition, due to the characteristic that zener diode D and the first triode Q1 itself have, the cathode and sun of zener diode D
Voltage difference VD between pole and the voltage difference VBE between the base stage and emitter of the first triode Q1 be not with the change of electric current I
Change and change, namely does not change with the variation of the input voltage V1 of driving circuit.
In the present embodiment, the temperature characterisitic of zener diode D and the first triode Q1 are complementary, and the temperature coefficient of the two
Ratio is identical.It may also be said that the voltage difference VBE between the base stage and emitter of the first triode Q1 is increased with temperature and is dropped
Low, voltage difference VD between the cathode and anode of zener diode D is increased with temperature and is increased, and the value of VD+VBE is not as a result,
Change with the variation of temperature and input voltage V1.
In the present embodiment, the calculation formula of conversion voltage V2 can be indicated are as follows:
V2=VD+VBE+VGS1-VGS2
Wherein, V2 is the voltage value of the conversion voltage of the driving circuit output, and VD is the cathode and sun of zener diode
Voltage value between pole, VBE are the voltage differences between the base stage and emitter of the first triode, and VGS1 is the first transistor
Voltage difference between grid and source electrode, VGS2 are the voltage differences between the grid of second transistor and source electrode.
In the first transistor M1 situation identical with the specification of second transistor M2, it is believed that the first transistor M1's
Voltage difference VGS1 between grid and source electrode is approximate with the voltage difference VGS2 between the grid of second transistor M2 and source electrode
It is equal.Voltage V2=VD+VBE is converted as a result,.By foregoing teachings it is found that the value of VD+VBE is not with temperature and input voltage V1
Change and change, then converts voltage V2 and also do not change with the variation of temperature and input voltage V1.
It is the structural schematic diagram of second of driving circuit of the utility model embodiment with reference to Fig. 2, Fig. 2.
Second of driving circuit includes voltage reduction module 1, Voltage stabilizing module 4 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 4 is described in detail below.
The Voltage stabilizing module 4 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 41, first compensating module 41 are suitable for carrying out the zener diode D
Temperature characteristic compensation；Second compensating module 42, second compensating module 42 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, first compensating module 41 includes the first triode Q1, the collector of the first triode Q1
The output end of the voltage reduction module 1 is connected, the base stage of the first triode Q1 connects the collector of the first triode Q1；
The cathode of the zener diode D connects the emitter of the first triode Q1；The input terminal of the second compensating module M1
Connect the anode of the zener diode D, the output end ground connection of the second compensating module M1.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 42 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
It is the structural schematic diagram of the third driving circuit of the utility model embodiment with reference to Fig. 3, Fig. 3.
The third described driving circuit includes voltage reduction module 1, Voltage stabilizing module 5 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 5 is described in detail below.
The Voltage stabilizing module 5 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 51, first compensating module 51 are suitable for carrying out the zener diode
Temperature characteristic compensation；Second compensating module 52, second compensating module 52 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, first compensating module 51 includes the first triode Q1, the collector of the first triode Q1
The output end of the voltage reduction module 1 is connected, the base stage of the first triode Q1 connects the collector of the first triode Q1；
The input terminal of second compensating module 52 connects the emitter of the first triode Q1；The cathode of the zener diode D
Connecting second compensating module 52, (such as the output end comprising the first transistor M1), the anode of the zener diode D connect
Ground.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 52 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
It is the structural schematic diagram of the 4th kind of driving circuit of the utility model embodiment with reference to Fig. 4, Fig. 4.
The 4th kind of driving circuit includes voltage reduction module 1, Voltage stabilizing module 6 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 6 is described in detail below.
The Voltage stabilizing module 6 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 61, first compensating module 61 are suitable for carrying out the zener diode D
Temperature characteristic compensation；Second compensating module 62, second compensating module 62 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, the cathode of the zener diode D connects the output end of the voltage reduction module 1；Second compensation
The input terminal of module 62 connects the anode of the zener diode D；First compensating module 61 includes the first triode Q1, institute
The collector for stating the first triode Q1 connects the output end of second compensating module 62, and the base stage of the first triode Q1 connects
Connect the collector of the first triode Q1, the emitter ground connection of the first triode Q1.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 62 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
It is the structural schematic diagram of the 5th kind of driving circuit of the utility model embodiment with reference to Fig. 5, Fig. 5.
The 5th kind of driving circuit includes voltage reduction module 1, Voltage stabilizing module 7 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 7 is described in detail below.
The Voltage stabilizing module 7 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 71, first compensating module 71 are suitable for carrying out the zener diode D
Temperature characteristic compensation；Second compensating module 72, second compensating module 72 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, the cathode of the zener diode D connects the output end of the voltage reduction module 1；First compensation
Module 71 includes that the collector of the first triode Q1, the first triode Q1 connects the anode of the zener diode D, described
The base stage of first triode Q1 connects the collector of the first triode Q1；The input terminal of second compensating module 72 connects
The emitter of the first triode Q1, the output end ground connection of second compensating module 72.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 72 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
It is the structural schematic diagram of the 6th kind of driving circuit of the utility model embodiment with reference to Fig. 6, Fig. 6.
The 6th kind of driving circuit includes voltage reduction module 1, Voltage stabilizing module 8 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 8 is described in detail below.
The Voltage stabilizing module 8 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 81, first compensating module 81 are suitable for carrying out the zener diode D
Temperature characteristic compensation；Second compensating module 82, second compensating module 82 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, the input terminal of second compensating module 82 connects the output end of the voltage reduction module 1；The pressure stabilizing
The cathode of diode D connects the output end of second compensating module 82；First compensating module 81 includes the first triode
The collector of Q1, the first triode Q1 connect the anode of the zener diode D, and the base stage of the first triode Q1 connects
Connect the collector of the first triode Q1, the emitter ground connection of the first triode Q1.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 82 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
It is the structural schematic diagram of the 7th kind of driving circuit of the utility model embodiment with reference to Fig. 7, Fig. 7.
The 7th kind of driving circuit includes voltage reduction module 1, Voltage stabilizing module 9 and follows module 3, wherein voltage reduction module 1
And follow module 3 and voltage reduction module 1 described in Fig. 1 and follow the structure & working mechanism of module 3 identical, herein no longer
It repeats, only Voltage stabilizing module 9 is described in detail below.
The Voltage stabilizing module 9 includes: zener diode D, and the zener diode D is suitable for the defeated of the voltage reduction module 1
The voltage of outlet carries out clamper；First compensating module 91, first compensating module 91 are suitable for carrying out the zener diode D
Temperature characteristic compensation；Second compensating module 92, second compensating module 92 are suitable for following module 3 to carry out voltage benefit to described
It repays.
Further, the input terminal of second compensating module 92 connects the output end of the voltage reduction module 1；Described first
Compensating module 91 includes the first triode Q1, and the collector of the first triode Q1 connects the defeated of second compensating module 92
Outlet, the base stage of the first triode Q1 connect the collector of the first triode Q1；The cathode of the zener diode D
Connect the emitter of the first triode Q1, the plus earth of the zener diode D.
Wherein, the concrete type of the second compensating module 22 shown in described second compensating module 92 and Fig. 1 and work
Principle is identical, and for details, reference can be made to foregoing teachings.
Fig. 2 is into driving circuit shown in Fig. 7, the clamp voltage VA, the electric current I for flowing through resistance R and conversion voltage
The calculation of V2 is identical as the conversion calculation of voltage V2 in driving circuit shown in FIG. 1, and details are not described herein.
It should be noted that the voltage value of " high voltage " and " low-voltage " in the utility model embodiment does not do specific limit
It is fixed, as long as the voltage value of " high voltage " is higher than the voltage value of " low-voltage ".For example, the voltage value of " high voltage " can be known
Not Wei logic 1, and the voltage value of " low-voltage " can be identified as logical zero.
In addition, being the voltage value of high tension apparatus (such as: high-pressure N-shaped field-effect tube etc.) power supply in the utility model embodiment
Also it is not particularly limited, as long as the high tension apparatus can bear aforementioned " high voltage ".
Although the utility model discloses as above, the utility model is not limited to this.Anyone skilled in the art,
It does not depart from the spirit and scope of the utility model, can make various changes or modifications, therefore the protection scope of the utility model
It should be defined by the scope defined by the claims..
Claims (15)
1. a kind of driving circuit characterized by comprising
The input terminal of voltage reduction module, the voltage reduction module receives input voltage, and the voltage reduction module is adapted to provide for load step-down；
Voltage stabilizing module, the input terminal of the Voltage stabilizing module connect the output end of the voltage reduction module, and the Voltage stabilizing module is suitable for pair
The voltage of the output end of the voltage reduction module carries out clamper to obtain clamp voltage；
Module is followed, it is described that module is followed to be suitable for receiving the clamp voltage, the clamp voltage is followed to export and turn
Change voltage.
2. driving circuit according to claim 1, which is characterized in that the voltage reduction module includes:
Resistance, the first end of the resistance receive the input voltage, and the second end of the resistance is the defeated of the voltage reduction module
Outlet.
3. driving circuit according to claim 1, which is characterized in that the Voltage stabilizing module includes:
Zener diode, the zener diode are suitable for carrying out clamper to the voltage of the output end of the voltage reduction module；
First compensating module, first compensating module are suitable for carrying out temperature characteristic compensation to the zener diode；
Second compensating module, second compensating module are suitable for following module to carry out voltage compensation to described.
4. driving circuit according to claim 3, which is characterized in that
The cathode of the zener diode connects the output end of the voltage reduction module；
First compensating module includes the first triode, and the base stage of first triode connects the sun of the zener diode
The collector of pole, first triode connects the cathode of the zener diode；
The input terminal of second compensating module connects the emitter of first triode, the output of second compensating module
End ground connection.
5. driving circuit according to claim 3, which is characterized in that
First compensating module includes the first triode, and the collector of first triode connects the defeated of the voltage reduction module
Outlet, the base stage of first triode connect the collector of first triode；
The cathode of the zener diode connects the emitter of first triode；
The input terminal of second compensating module connects the anode of the zener diode, the output end of second compensating module
Ground connection.
6. driving circuit according to claim 3, which is characterized in that
First compensating module includes the first triode, and the collector of first triode connects the defeated of the voltage reduction module
Outlet, the base stage of first triode connect the collector of first triode；
The input terminal of second compensating module connects the emitter of first triode；
The cathode of the zener diode connects the output end of second compensating module, and the anode of the zener diode connects
Ground.
7. driving circuit according to claim 3, which is characterized in that
The cathode of the zener diode connects the output end of the voltage reduction module；
The input terminal of second compensating module connects the anode of the zener diode；
First compensating module includes the first triode, and the collector of first triode connects second compensating module
Output end, the base stage of first triode connects the collector of first triode, the transmitting of first triode
Pole ground connection.
8. driving circuit according to claim 3, which is characterized in that
The cathode of the zener diode connects the output end of the voltage reduction module；
First compensating module includes the first triode, and the collector of first triode connects the zener diode
Anode, the base stage of first triode connect the collector of first triode；
The input terminal of second compensating module connects the emitter of first triode, the output of second compensating module
End ground connection.
9. driving circuit according to claim 3, which is characterized in that
The input terminal of second compensating module connects the output end of the voltage reduction module；
The cathode of the zener diode connects the output end of second compensating module；
First compensating module includes the first triode, and the collector of first triode connects the zener diode
Anode, the base stage of first triode connect the collector of first triode, and the emitter of first triode connects
Ground.
10. driving circuit according to claim 3, which is characterized in that
The input terminal of second compensating module connects the output end of the voltage reduction module；
First compensating module includes the first triode, and the collector of first triode connects second compensating module
Output end, the base stage of first triode connects the collector of first triode；
The cathode of the zener diode connects the emitter of first triode, the plus earth of the zener diode.
11. according to the described in any item driving circuits of claim 3-10, which is characterized in that second compensating module includes the
One transistor, described to follow module include second transistor；
The drain electrode of the first transistor is the input terminal of second compensating module, and the grid of the first transistor connects institute
The drain electrode of the first transistor is stated, the source electrode of the first transistor is the output end of second compensating module；
The grid of the second transistor connects the output end of the voltage reduction module, described in the drain electrode connection of the second transistor
Input voltage, the source electrode of the second transistor are the output end for following module；
The first transistor is identical with the second transistor specification.
12. according to the described in any item driving circuits of claim 3-10, which is characterized in that second compensating module includes the
Two triodes, described to follow module include third transistor；
The input terminal of extremely described second compensating module of the current collection of second triode, the base stage connection of second triode
The collector of second triode, the output end of extremely described second compensating module of transmitting of second triode；
The base stage of the third transistor connects the output end of the voltage reduction module, and the collector of the third transistor receives institute
State input voltage, the extremely described output end for following module of the transmitting of the third transistor；
Second triode is identical with the third transistor specification.
13. according to the described in any item driving circuits of claim 4-10, which is characterized in that
The substrate of first triode connects the potential minimum that first triode works normally tolerance.
14. driving circuit according to claim 12, which is characterized in that
The substrate of second triode connects the potential minimum and/or described that second triode works normally tolerance
The substrate of three triodes connects the potential minimum that the third transistor works normally tolerance.
15. driving circuit according to claim 11, which is characterized in that
The substrate of the first transistor connects the potential minimum and/or described that the first transistor works normally tolerance
The substrate of two-transistor connects the potential minimum that the second transistor works normally tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906449.4U CN208924114U (en) | 2018-11-19 | 2018-11-19 | A kind of driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821906449.4U CN208924114U (en) | 2018-11-19 | 2018-11-19 | A kind of driving circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208924114U true CN208924114U (en) | 2019-05-31 |
Family
ID=66712187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821906449.4U Active CN208924114U (en) | 2018-11-19 | 2018-11-19 | A kind of driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208924114U (en) |
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2018
- 2018-11-19 CN CN201821906449.4U patent/CN208924114U/en active Active
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