CN108649932A - The adjustable transformer isolation driving method of space wide scope duty ratio - Google Patents
The adjustable transformer isolation driving method of space wide scope duty ratio Download PDFInfo
- Publication number
- CN108649932A CN108649932A CN201810487016.8A CN201810487016A CN108649932A CN 108649932 A CN108649932 A CN 108649932A CN 201810487016 A CN201810487016 A CN 201810487016A CN 108649932 A CN108649932 A CN 108649932A
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- drive signal
- duty ratio
- transformer isolation
- circuit
- transformer
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- 238000002955 isolation Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000002708 enhancing effect Effects 0.000 claims abstract description 11
- 238000010992 reflux Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H03K5/156—Arrangements in which a continuous pulse train is transformed into a train having a desired pattern
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
Abstract
The present invention relates to a kind of adjustable transformer isolation driving methods of space wide scope duty ratio to export the drive signal of 0%~100% duty ratio by using connected first via transformer isolation circuit and the second tunnel transformer isolation circuit；Wherein, include per road transformer isolation circuit：Totem-pote circuit enhances its driving capability to the drive signal of input；Pulse transformer is connect with the output end of totem-pote circuit by circuit, and the drive signal to enhancing driving capability carries out signal isolation；The output end of the pulse transformer of two-way transformer isolation circuit is connected in series with by the first triode and first resistor, and the output end of the pulse transformer of the two-way transformer isolation circuit is further connected to the grid and source electrode of switching tube MOSFET.The present invention realizes the drive signal of 0%~100% duty ratio of output by using two-way transformer isolation circuit；With high integration, and meet the requirement in space exploration field.
Description
Technical field
The present invention relates to a kind of transformer isolation driving method, in particular to the adjustable transformers of space wide scope duty ratio
Isolation drive structure can be realized the duty ratio of 0%~100% wide scope variation by transformer, belong to space technology field.
Background technology
Space exploration is the Disciplinary Frontiers of world today's development in science and technology, have it is very strong it is basic, perspective, it is innovative and
Drive property.Due to the particularity of space field, in application isolating device driving switch pipe, the common optocoupler of terrestrial world every
It cannot use, at this moment be generally required using pulse transformer isolation structure come driving switch pipe from device.But due to becoming
Depressor needs the reason of magnetic reset, therefore largest duty cycle can only achieve 90% or so under normal circumstances, and space field is certain
Application scenario then needs the isolation drive structure of 0%~100% wide scope variation duty ratio.
Therefore, it is based on a kind of above-mentioned, adjustable transformer isolation driving method of space wide scope duty ratio of present invention proposition,
To solve defect existing in the prior art and limitation.
Invention content
The object of the present invention is to provide a kind of adjustable transformer isolation driving methods of space wide scope duty ratio, by adopting
With two-way transformer isolation circuit, the drive signal of 0%~100% duty ratio of output is realized；With high integration, and meet space
The requirement of field of detecting.
To achieve the above object, the present invention provides a kind of adjustable transformer isolation driving side of space wide scope duty ratio
Method exports 0%~100% duty by using connected first via transformer isolation circuit and the second tunnel transformer isolation circuit
The drive signal of ratio；Wherein, include per road transformer isolation circuit：Totem-pote circuit enhances its drive to the drive signal of input
Kinetic force；Pulse transformer is connect with the output end of totem-pote circuit by circuit, to enhance driving capability drive signal into
Row signal isolation；The output end of the pulse transformer of two-way transformer isolation circuit is connected by the first triode and first resistor
Connection, and the output end of the pulse transformer of the two-way transformer isolation circuit is further connected to the grid of switching tube MOSFET
Pole and source electrode.
Wherein, the first via drive signal of input first via transformer isolation circuit is after enhancing and isolation, switch tube
The grid source of MOSFET charges, and inputs the second road drive signal of the second tunnel transformer isolation circuit and is enhancing and be isolated
Afterwards, the grid source of switch tube MOSFET is discharged.
The first via drive signal and the second road drive signal is the drive signal of 50% duty ratio；Work as the first via
When drive signal is connected always, switching tube MOSFET exports the drive signal of 100% duty ratio；When the second road drive signal always
When conducting, switching tube MOSFET exports the drive signal of 0% duty ratio.
It is also connected between the output end and first resistor of the pulse transformer of the first via transformer isolation circuit
There is the 7th resistance.
7th resistance is the charging resistor of the grid source of switch tube MOSFET；The first resistor is split
Close the discharge resistance of the grid source of pipe MOSFET；It is defeated to control switching tube MOSFET by controlling the 7th resistance and first resistor
The rising edge and failing edge of the drive signal gone out.
It is also connected between the output end and first resistor of the pulse transformer of the first via transformer isolation circuit
There is the first diode, in the charging process of the grid source of switch tube MOSFET, prevents current reflux.
It is higher than the second of first via PWM initial driving signals using first via PWM initial driving signals and switching frequency
Road PWM initial driving signals obtain the first via drive signal and the second tunnel driving letter being modulated with by way of
Number.
Wherein, the switching frequency of the second road PWM initial driving signals is the switching frequency of first via PWM initial driving signals
10 times or more.
The duty ratio of the first via PWM initial driving signals is 0%~100%, and the second road PWM initially drives
The duty ratio of signal is 50%.
In conclusion the adjustable transformer isolation driving method of space wide scope duty ratio provided by the invention, pass through by
Drive signal decomposes on two-way transformer isolation circuit, wherein being responsible for the ends the GS charging of switch tube all the way, another way is responsible for
The ends GS of switch tube are discharged, to realize the drive signal of 0%~100% duty ratio of output.The present invention is visited using space is met
The driving element that survey field requires, realizes highly integrated design, and be equally applicable to the drive signal in other occasions and field every
From.
Description of the drawings
Fig. 1 is the topological schematic diagram of the adjustable transformer isolation driving method of space wide scope duty ratio in the present invention；
Fig. 2 is the control schematic diagram of the drive signal in the present invention；
Fig. 3 is the control logic analogous diagram of the adjustable transformer isolation driving method of space wide scope duty ratio in the present invention.
Specific implementation mode
By reading made by referring to Fig.1~Fig. 3 to being described in detail made by non-limiting embodiment, spy of the invention
Sign, objects and advantages will become more apparent upon.Referring to Fig. 1~Fig. 3 for showing the embodiment of the present invention, hereafter will be described in greater detail
The present invention.However, the present invention can be realized by many different forms, and should not be construed as by the embodiment herein proposed
Limitation.
As shown in Figure 1, being the adjustable transformer isolation driving method of wide scope duty ratio in space provided by the present invention, lead to
It crosses using connected two-way transformer isolation circuit, exports the drive signal of 0%~100% duty ratio；Wherein, per road transformer every
Include from circuit：Totem-pote circuit enhances its driving capability to the drive signal all the way of input；Pulse transformer, with totem
The output end of circuit is connected by circuit, and the drive signal to enhancing driving capability carries out signal isolation；Two-way transformer isolation
The output end of the pulse transformer of circuit is connected in series with by the first triode Q3 and first resistor R6, and the two-way transformer
The output end of the pulse transformer of isolation circuit is further connected to switching tube Q4（It is realized using MOSFET）Grid and source electrode.
As shown in Figure 1, the upper road totem-pote circuit of upper road transformer isolation circuit is by second resistance R1, the second triode
Q1, third transistor Q2 and 3rd resistor R3 are composed in series, and input terminal is that the second triode Q1 is connected with third transistor Q2
Base stage, output end is the collectors that are connected with third transistor Q2 of the second triode Q1.The upper road totem-pote circuit pair
The upper road drive signal PWM_OUT1 inputted from input terminal enhances its driving capability.The upper road of the roads Er Gaishang transformer isolation circuit
Pulse transformer T1 then carries out signal isolation to the drive signal PWM_OUT1 for enhancing driving capability.
Further, the input terminal of the upper road pulse transformer T1 passes through the 6th resistance R3, the first capacitance C1 and upper road
The output end of totem-pote circuit connects；On this output end of road pulse transformer T1 by the second capacitance C2, the 7th resistance R4 and
First diode D1 is connect with first resistor R6, and is connected to the grid G of switching tube Q4.
As shown in Figure 1, the lower road totem-pote circuit of lower road transformer isolation circuit is by the 4th resistance R7, the 4th triode
Q5, the 5th triode Q6 and the 5th resistance R8 are composed in series, and input terminal is connected for the 4th triode Q5 and the 5th triode Q6
Base stage, output end be the 4th triode Q5 and the 5th triode Q6 be connected collector.The lower road totem-pote circuit pair
The lower road drive signal PWM_OUT2 inputted from input terminal enhances its driving capability.The lower road of the roads Er Gaixia transformer isolation circuit
Pulse transformer T2 then carries out signal isolation to the drive signal PWM_OUT2 for enhancing driving capability.
Further, the input terminal of the lower road pulse transformer T2 passes through the 8th resistance R9, third capacitance C3 and lower road
The output end of totem-pote circuit connects；The output end of the lower road pulse transformer T2 by the 4th capacitance C4, the 9th resistance R10,
Second diode D3 is connect with the first triode Q3, and is connected to the source S of switching tube Q4.
Wherein, upper road drive signal PWM_OUT1 after enhancing and isolation, charge by the ends GS of switch tube Q4, lower road
Drive signal PWM_OUT2 after enhancing and isolation, discharge by the ends GS of switch tube Q4.And two-way drive signal PWM_
OUT1 and PWM_OUT2 is the drive signal of 50% duty ratio, so as to fully ensure that the unsaturation of pulse transformer.Together
When, in extreme circumstances, when upper road drive signal PWM_OUT1 is connected always, switching tube Q4 exports the driving letter of 100% duty ratio
Number；Instantly drive signal PWM_OUT2 in road is connected always, and switching tube Q4 exports the drive signal of 0% duty ratio.
As shown in Figure 1, it is connected to the 7th resistance R4 between the output end and first resistor R6 of road pulse transformer T1,
For the charging resistor at the ends GS of switch tube Q4；Be connected between road pulse transformer T1 and lower road pulse transformer T2
One resistance R6 is the discharge resistance at the ends GS of switch tube Q4；Above-mentioned 7th resistance R4 and first resistor R6 is adjusted by controlling
Resistance value, so as to control switching tube Q4 output drive signal rising edge and failing edge.
As shown in Figure 1, being connected to the first diode between the output end and first resistor R6 of road pulse transformer T1
D1 will not there is a phenomenon where current reflux to ensure during the ends GS of switch tube Q4 are charged.
As shown in Fig. 2, in a preferred embodiment of the invention, logical AND NOT gate chip CD4011 and logical AND gate can be used
Chip CD4081 constitutes the control system of drive signal, to generate two-way drive signal PWM_OUT1 and PWM_OUT2.
Specially：Using two-way initial driving signal, as shown in Figures 2 and 3, wherein being normal pwm signal all the way
The waveform that V7 in PWM1, Fig. 3 is initial driving signal PWM1, duty ratio are 0%~100%；Another way signal is PWM2, is opened
It closes frequency and is higher than PWM1, the waveform that the V8 in Fig. 3 is initial driving signal PWM2, duty ratio 50%.In more detail, initially
The switching frequency of drive signal PWM2 is 10 times or more of the switching frequency of initial driving signal PWM1.By shown in Fig. 2
This two-way initial driving signal is modulated by control system by the way of "AND", obtains above-mentioned two-way drive signal
PWM_OUT1（Waveform is as shown in the V5 in Fig. 3）And PWM_OUT2（Waveform is as shown in the V6 in Fig. 3）.
In conclusion the adjustable transformer isolation driving method of space wide scope duty ratio provided by the invention, pass through by
Drive signal decomposes on two-way transformer isolation circuit, wherein being responsible for the ends the GS charging of switch tube all the way, another way is responsible for
The ends GS of switch tube are discharged, to realize the drive signal of 0%~100% duty ratio of output.The present invention is visited using space is met
The driving element that survey field requires, realizes highly integrated design, and be equally applicable to the drive signal in other occasions and field every
From.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a kind of adjustable transformer isolation driving method of space wide scope duty ratio, which is characterized in that by using connected
First via transformer isolation circuit and the second tunnel transformer isolation circuit export the drive signal of 0%~100% duty ratio；Wherein,
Include per road transformer isolation circuit：Totem-pote circuit enhances its driving capability to the drive signal of input；Pulse transforming
Device is connect with the output end of totem-pote circuit by circuit, and the drive signal to enhancing driving capability carries out signal isolation；
The output end of the pulse transformer of two-way transformer isolation circuit is connected in series with by the first triode and first resistor, and
And the output end of the pulse transformer of the two-way transformer isolation circuit is further connected to grid and the source of switching tube MOSFET
Pole.
2. the adjustable transformer isolation driving method of space wide scope duty ratio as described in claim 1, which is characterized in that defeated
Enter the first via drive signal of first via transformer isolation circuit after enhancing and isolation, the grid source of switch tube MOSFET into
Row charging；The second road drive signal of the second tunnel transformer isolation circuit is inputted after enhancing and isolation, switch tube MOSFET
Grid source discharge.
3. the adjustable transformer isolation driving method of space wide scope duty ratio as claimed in claim 2, which is characterized in that institute
The first via drive signal and the second road drive signal stated are the drive signal of 50% duty ratio；When first via drive signal begins
Eventually when conducting, switching tube MOSFET exports the drive signal of 100% duty ratio；When the second road drive signal is connected always, switch
Pipe MOSFET exports the drive signal of 0% duty ratio.
4. the adjustable transformer isolation driving method of space wide scope duty ratio as described in claim 1, which is characterized in that
It is also associated with the 7th resistance between the output end and first resistor of the pulse transformer of the first via transformer isolation circuit.
5. the adjustable transformer isolation driving method of space wide scope duty ratio as claimed in claim 4, which is characterized in that institute
The 7th resistance stated is the charging resistor of the grid source of switch tube MOSFET；The first resistor is switch tube MOSFET
Grid source discharge resistance；Believed with the driving for controlling switching tube MOSFET outputs by controlling the 7th resistance and first resistor
Number rising edge and failing edge.
6. the adjustable transformer isolation driving method of space wide scope duty ratio as described in claim 1, which is characterized in that
It is also associated with the one or two pole between the output end and first resistor of the pulse transformer of the first via transformer isolation circuit
Pipe, in the charging process of the grid source of switch tube MOSFET, prevents current reflux.
7. the adjustable transformer isolation driving method of space wide scope duty ratio as described in claim 1, which is characterized in that adopt
It is initial higher than the second road PWM of first via PWM initial driving signals with first via PWM initial driving signals and switching frequency
Drive signal obtains the first via drive signal and the second road drive signal being modulated with by way of.
8. the adjustable transformer isolation driving method of space wide scope duty ratio as claimed in claim 7, which is characterized in that institute
The switching frequency for the second road PWM initial driving signals stated be 10 times of switching frequency of first via PWM initial driving signals or
More than.
9. the adjustable transformer isolation driving method of space wide scope duty ratio as claimed in claim 7, which is characterized in that institute
The duty ratio for the first via PWM initial driving signals stated is 0%~100%, the duty of the second road PWM initial driving signals
Than being 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487016.8A CN108649932A (en) | 2018-05-21 | 2018-05-21 | The adjustable transformer isolation driving method of space wide scope duty ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487016.8A CN108649932A (en) | 2018-05-21 | 2018-05-21 | The adjustable transformer isolation driving method of space wide scope duty ratio |
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| Publication Number | Publication Date |
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| CN108649932A true CN108649932A (en) | 2018-10-12 |
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| CN201810487016.8A Pending CN108649932A (en) | 2018-05-21 | 2018-05-21 | The adjustable transformer isolation driving method of space wide scope duty ratio |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299826A (en) * | 2019-07-01 | 2019-10-01 | 上海空间电源研究所 | A kind of spacecraft highly reliable isolated drive circuit of suitable wide duty ratio |
| CN110474539A (en) * | 2019-08-23 | 2019-11-19 | 佛山市格正电源科技有限公司 | A kind of novel isolated drive circuit |
| CN111130344A (en) * | 2019-12-18 | 2020-05-08 | 上海空间电源研究所 | Space microsecond level pulse power supply circuit |
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| US6411064B1 (en) * | 2000-07-20 | 2002-06-25 | Koninklijke Philips Electronics N.V. | System and method for charging a capacitor using a variable frequency, variable duty cycle current waveform |
| CN203445775U (en) * | 2013-08-28 | 2014-02-19 | 北京卫星制造厂 | Large-duty-ratio magnetic isolation drive circuit |
| CN104348398A (en) * | 2014-10-29 | 2015-02-11 | 华南农业大学 | Drive control device and method of macro-micro drive piezoelectric liner motor |
| CN104467380A (en) * | 2014-12-31 | 2015-03-25 | 广州视源电子科技股份有限公司 | Driving device and method |
| CN204886740U (en) * | 2015-08-28 | 2015-12-16 | 山东艾诺仪器有限公司 | Hard switch drive circuit of full -bridge contravariant |
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2018
- 2018-05-21 CN CN201810487016.8A patent/CN108649932A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6411064B1 (en) * | 2000-07-20 | 2002-06-25 | Koninklijke Philips Electronics N.V. | System and method for charging a capacitor using a variable frequency, variable duty cycle current waveform |
| CN203445775U (en) * | 2013-08-28 | 2014-02-19 | 北京卫星制造厂 | Large-duty-ratio magnetic isolation drive circuit |
| CN104348398A (en) * | 2014-10-29 | 2015-02-11 | 华南农业大学 | Drive control device and method of macro-micro drive piezoelectric liner motor |
| CN104467380A (en) * | 2014-12-31 | 2015-03-25 | 广州视源电子科技股份有限公司 | Driving device and method |
| CN204886740U (en) * | 2015-08-28 | 2015-12-16 | 山东艾诺仪器有限公司 | Hard switch drive circuit of full -bridge contravariant |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299826A (en) * | 2019-07-01 | 2019-10-01 | 上海空间电源研究所 | A kind of spacecraft highly reliable isolated drive circuit of suitable wide duty ratio |
| CN110299826B (en) * | 2019-07-01 | 2020-11-20 | 上海空间电源研究所 | Reliable isolation driving circuit suitable for wide duty ratio for spacecraft |
| CN110474539A (en) * | 2019-08-23 | 2019-11-19 | 佛山市格正电源科技有限公司 | A kind of novel isolated drive circuit |
| CN111130344A (en) * | 2019-12-18 | 2020-05-08 | 上海空间电源研究所 | Space microsecond level pulse power supply circuit |
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Application publication date: 20181012 |
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