CN106300958A - A kind of carrier generating circuit of pulse frequency modulated - Google Patents
A kind of carrier generating circuit of pulse frequency modulated Download PDFInfo
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- CN106300958A CN106300958A CN201610651536.9A CN201610651536A CN106300958A CN 106300958 A CN106300958 A CN 106300958A CN 201610651536 A CN201610651536 A CN 201610651536A CN 106300958 A CN106300958 A CN 106300958A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/06—Frequency or rate modulation, i.e. PFM or PRM
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Amplifiers (AREA)
Abstract
The invention provides the carrier generating circuit of the pulse frequency modulated in a kind of unity power factor correction field, including sinewave circuit and carrier generating circuit.Described sinewave circuit is mainly made up of full-wave rectifying circuit and subtraction circuit two parts, makes outfan produce sine wave, and passes to carrier generating circuit as input, and carrier generating circuit produces and the most sinusoidal wave corresponding triangular wave.Present invention hardware circuit has built the carrier generating circuit of pulse frequency modulated, decreases the cost using controller and algorithm to realize, and hardware circuit is simple, has certain application value.
Description
Technical field
The present invention relates to Technics of Power Electronic Conversion technical field, in particular it relates to the carrier wave of a kind of pulse frequency modulated occurs
Circuit.
Background technology
Pulse frequency modulated (PFM) is a kind of pulse modulation method, and its basic thought is that the frequency of modulated signal is with input
The amplitude of signal and change, and dutycycle is constant.Pulse frequency modulated is often applied in DC-DC power converter, is used for carrying
The efficiency of high light load.
Through finding the retrieval of prior art, the research about pulse frequency modulated is concentrated mainly on the sides such as control algolithm
Face.Qi Chen et al. proposes the three-phase inverter pulse frequency modulated technology of a kind of improvement in " Electrified Transmission " of 2014,
This technology uses DSP to be controlled, and by segmenting modulation period, selects suitable pulse width, then coordinates pulse position modulation
Technology, it is suppressed that harmonic wave, improves output current wave quality；Yang Houyue et al. proposes one in patent disclosed in 2015
Plant pulse frequency modulation circuit based on RC agitator, by adjusting the operating current size of RC oscillating circuit, change oscillation frequency
Rate, thus have adjusted the frequency of clock signal, it is thus achieved that required pulse signal.
In the actual application of converters, up to now, Design of Digital Controller pulse is seldom used
Frequency modulating technology carries out electromagnetic interference (EMI) suppression.Single-phase power factor correcting device is mostly applied in household appliance technical field, family
Electrical appliance equipment is the highest to the requirement of EMI, can use pulse frequency modulated technology for this, including digitial controller or simulation
Controller.When using analog controller, compare at present and lack the hard of a kind of carrier generating circuit producing pulse frequency modulated
Part implementation method.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide the pulse in a kind of unity power factor correction field
Warbled carrier generating circuit, this circuit is the Hardware Implementation of a kind of pulse frequency modulated.
According to the carrier generating circuit of a kind of pulse frequency modulated that the present invention provides, including sinewave circuit and carrier wave
There is circuit.Described fall sinewave circuit outfan produce sine wave, and will fall sine wave and pass to carrier wave as input and send out
Raw circuit, carrier generating circuit produces and falls sinusoidal wave corresponding triangular wave.
Preferably, described sinewave circuit includes full-wave rectifying circuit and subtraction circuit, and full-wave rectifying circuit includes
Diode D1, diode D2 and electric capacity C1, subtraction circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity
Resistance R6, resistance R7 and amplifier OP1.
Specifically, the anode of diode D1 one end with ac power input end ACL and electric capacity C1 respectively is connected, diode
The anode of the D2 other end with ac power input end CAN and electric capacity C1 respectively is connected, the negative electrode of diode D2 respectively with two poles
The negative electrode of pipe D1 is connected with one end of resistance R1, and the other end of resistance R1 one end with resistance R2 and resistance R6 respectively is connected, electricity
Hindering the other end ground connection of R2, an end of resistance R3 receives 15V voltage, and the other end of resistance R3 is respectively with resistance R4's and resistance R5
One end is connected, the other end ground connection of resistance R4, and the other end of resistance R5 receives the in-phase input end of amplifier OP1, and resistance R6's is another
One end receives the reverse input end of amplifier OP1, and is connected with one end of resistance R7, and amplifier OP1 connects 15V voltage, amplifier OP1 defeated
Go out end to be connected with the other end of resistance R7.
Preferably, described carrier generating circuit include stabilivolt ZD1, audion TR1, resistance R8, resistance R9, resistance R10,
Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electric capacity C2, inverse conductivity type switching device FET1, inverse conductivity type switch
Device FET2 and amplifier OP2.
Specifically, the negative electrode of stabilivolt ZD1 is connected, surely with the outfan of amplifier OP1 and the colelctor electrode of audion TR1 respectively
The anode of pressure pipe ZD1 is connected with one end, the base stage of audion TR1 of resistance R8 respectively, the other end ground connection of resistance R8, audion
The emitter stage of TR1 is connected with one end of electric capacity C2, the inverse drain electrode of conductivity type switching device FET1 and one end of resistance R9 respectively, electric capacity
The other end ground connection of C2, the other end of resistance R9 is connected with one end of resistance R13, and the other end of R13 receives the homophase of amplifier OP2
Input, an end of resistance R10 receives 15V voltage, the other end of resistance R10 respectively with resistance R11, resistance R12 and resistance R14
One end be connected, the other end of resistance R11 receives the drain electrode of inverse conductivity type switching device FET2, and the other end of resistance R12 receives fortune
Putting the inverting input of OP2, the other end ground connection of resistance R14, amplifier OP2 connects 15V voltage, the outfan of amplifier OP2 and electricity
One end of resistance R15 is connected, the other end of resistance R15 respectively with the gate pole of inverse conductivity type switching device FET1 and inverse conductivity type switching device
The gate pole of FET2 is connected, the source electrode of inverse conductivity type switching device FET1 and the source ground of inverse conductivity type switching device FET2, electric capacity C2
Two ends as the outfan of whole carrier generating circuit.
The work process of the present invention and operation principle be: full-wave rectifying circuit, first to input ac voltage rectification, is formed
Full-wave rectified voltage, is then carried out dividing potential drop by resistance, and is linked in subtractor and carries out subtraction, and its outfan is had
The voltage waveform of sine wave, electric capacity C2 is charged after being input to carrier generating circuit by this voltage, when electric capacity C2's
When voltage reaches the voltage of amplifier (as comparator) OP2 inverting input, amplifier OP2 is just output as, inverse conductivity type switching device
The gate pole of FET1 and inverse conductivity type switching device FET2 is applied in forward voltage and turns on, and the electric charge on electric capacity C1 is quickly released,
Voltage declines immediately, simultaneously as the conducting of inverse conductivity type switching device FET2, in resistance R11 access circuit, amplifier OP2
Anti-phase input terminal voltage reduces due to resistance R11 and resistance R12 parallel connection.When the voltage on electric capacity C2 is reduced to ratio amplifier OP2
New anti-phase input terminal voltage the lowest time, the outfan of amplifier OP2 becomes 0, and inverse conductivity type switching device FET1 and inverse conductivity type are opened
The gate pole closing device FET2 turns off, and electric capacity C1 starts to recharge.When the charging voltage anti-phase input terminal voltage than amplifier OP2 is high
Time, amplifier OP2 is just output as, and electric capacity C2 starts electric discharge, so moves in circles, and is the formation of with falling the sinusoidal wave triangle mated load
Ripple.
Compared with prior art, the present invention has a following beneficial effect:
1, carrier wave generation hardware circuit realizes, and has real-time and rapidity, decreases use controller inaccuracy,
Particularly suitable power factor corrector；
2, carrier frequency changes with the change of instantaneous voltage size, advantageously reduces EMI；
3, during instantaneous voltage height, carrier frequency is low, advantageously reduces switching loss.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,
Purpose and advantage will become more apparent upon:
The circuit theory diagrams of the embodiment that Fig. 1 provides for the present invention；Wherein, 1 is down sinewave circuit, and 2 occur for carrier wave
Circuit.
Fig. 2 is full-wave rectifying circuit terminal voltage oscillogram.
Fig. 3 is amplifier OP1 output end voltage oscillogram.
Fig. 4 is electric capacity C2 both end voltage oscillogram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some changes and improvements.These broadly fall into the present invention
Protection domain.
According to the carrier generating circuit of a kind of pulse frequency modulated that the present invention provides, including sinewave circuit and carrier wave
There is circuit.Described sinewave circuit is mainly made up of full-wave rectifying circuit and subtraction circuit two parts, makes outfan produce
Raw sine wave, and its (sinusoidal wave) is passed to carrier generating circuit as input, carrier generating circuit produces and sine
The triangular wave that ripple is corresponding.
Preferably, described sinewave circuit includes full-wave rectifying circuit and subtraction circuit, and full-wave rectifying circuit includes
Diode D1, diode D2 and electric capacity C1, subtraction circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity
Resistance R6, resistance R7 and amplifier OP1.
The anode of diode D1 one end with ac power input end ACL and electric capacity C1 respectively is connected, the sun of diode D2
The pole other end with ac power input end CAN and electric capacity C1 respectively is connected, and the negative electrode of diode D2 is respectively with diode D1's
Negative electrode is connected with one end of resistance R1, and the other end of resistance R1 one end with resistance R2 and resistance R6 respectively is connected, resistance R2's
Other end ground connection, an end of resistance R3 receives 15V voltage, the other end of resistance R3 respectively with one end phase of resistance R4 and resistance R5
Connecting, the other end ground connection of resistance R4, the other end of resistance R5 receives the in-phase input end of amplifier OP1, another termination of resistance R6
To the reverse input end of amplifier OP1, and being connected with one end of resistance R7, amplifier OP1 connects 15V voltage, the outfan of amplifier OP1 with
The other end of resistance R7 is connected.
Preferably, described carrier generating circuit include stabilivolt ZD1, audion TR1, resistance R8, resistance R9, resistance R10,
Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electric capacity C2, inverse conductivity type switching device FET1, inverse conductivity type switch
Device FET2 and amplifier OP2.
Specifically, the negative electrode of stabilivolt ZD1 is connected, surely with the outfan of amplifier OP1 and the colelctor electrode of audion TR1 respectively
The anode of pressure pipe ZD1 is connected with one end, the base stage of audion TR1 of resistance R8 respectively, the other end ground connection of resistance R8, audion
The emitter stage of TR1 is connected with one end of electric capacity C2, the inverse drain electrode of conductivity type switching device FET1 and one end of resistance R9 respectively, electric capacity
The other end ground connection of C2, the other end of resistance R9 is connected with one end of resistance R13, and the other end of R13 receives the homophase of amplifier OP2
Input, an end of resistance R10 receives 15V voltage, the other end of resistance R10 respectively with resistance R11, resistance R12 and resistance R14
One end be connected, the other end of resistance R11 receives the drain electrode of inverse conductivity type switching device FET2, and the other end of resistance R12 receives fortune
Putting the inverting input of OP2, the other end ground connection of resistance R14, amplifier OP2 connects 15V voltage, the outfan of amplifier OP2 and electricity
One end of resistance R15 is connected, the other end of resistance R15 respectively with the gate pole of inverse conductivity type switching device FET1 and inverse conductivity type switching device
The gate pole of FET2 is connected, the source electrode of inverse conductivity type switching device FET1 and the source ground of inverse conductivity type switching device FET2, electric capacity C2
Two ends as the outfan of whole carrier generating circuit.
The work process of the present invention and operation principle be: full-wave rectifying circuit, first to input ac voltage rectification, is formed
Full-wave rectified voltage, as shown in Figure 2.Then carried out dividing potential drop by resistance, and be linked in subtractor and carry out subtraction, its output
End obtains the voltage waveform with sine wave, as shown in Figure 3.Electric capacity C2 is carried out after being input to carrier generating circuit by this voltage
Charging, when the voltage of electric capacity C2 rises the voltage reaching amplifier (as comparator) OP2 inverting input, amplifier OP2 exports
For just, the gate pole of inverse conductivity type switching device FET1 and inverse conductivity type switching device FET2 is applied in forward voltage and turns on, electric capacity C1
On electric charge be quickly released, voltage drops to zero immediately, simultaneously as the conducting of inverse conductivity type switching device FET2, resistance R11
In access circuit, the anti-phase input terminal voltage of amplifier OP2 reduces due to resistance R11 and resistance R12 parallel connection.When on electric capacity C2
Voltage be reduced to the new anti-phase input terminal voltage than amplifier OP2 the lowest time, the outfan vanishing of amplifier OP2, inverse conductivity type
The gate pole of switching device FET1 and inverse conductivity type switching device FET2 turns off, and electric capacity C1 starts to recharge.When charging voltage is than fortune
When putting the anti-phase input terminal voltage height of OP2, amplifier OP2 is just output as, and electric capacity C2 starts electric discharge, so moves in circles, is formed for
With falling the triangular carrier of sine wave coupling, as shown in Figure 4, during instantaneous value height, triangular carrier flat rate is high, and reverse-frequency is low.
In the present embodiment, the carrier generating circuit of described a kind of pulse frequency modulated, including diode D1-D2, electric capacity
C1-C2, resistance R1-R15, amplifier OP1-OP2, stabilivolt ZD1, audion TR1 and inverse conductivity type switching device FET1-FET2, its
In:
Electric capacity C1 two ends connect ac power input end, and are respectively connected with the anode of diode D1 and diode D2；
The negative electrode of diode D1 and diode D2 links together, and is connected with one end of resistance R1；
The other end of resistance R1 is connected with one end of resistance R2 and resistance R6；
The one termination 15V voltage of resistance R3, the other end of resistance R3 is connected with one end of resistance R5 and resistance R4；
The other end ground connection of resistance R2 and resistance R4；
The in-phase input end of amplifier OP1 is connected with the other end of resistance R5, and the inverting input of amplifier OP1 is with resistance R6's
The other end is connected with one end of resistance R7, and the other end of resistance R7 connects the outfan of amplifier OP1；
The negative electrode of stabilivolt ZD1 is connected with the outfan of amplifier OP1, and the anode of stabilivolt ZD1 connects one end of resistance R8
Base stage with audion TR1；
The colelctor electrode of audion TR1 is connected with the outfan of amplifier OP1, the emitter stage of audion TR1 and the one of electric capacity C2
End, the drain electrode of inverse conductivity type switching device FET1 are connected with one end of resistance R9；
The other end ground connection of resistance R8 and electric capacity C2；
The other end of resistance R9 connects the in-phase input end of other end connection amplifier OP2 of resistance R13, resistance R13；
The one termination 15V voltage of resistance R10, the other end of resistance R10 and resistance R11, resistance R12 and the one of resistance R14
End is connected；
The drain electrode of the inverse conductivity type switching device FET2 of another termination of resistance R11 is connected, the other end of resistance R12 and amplifier
The inverting input of OP2 is connected；
Resistance R14, the source electrode of inverse conductivity type switching device FET1 and the source ground of inverse conductivity type switching device FET2；
The outfan of amplifier OP2 is connected with one end of resistance R15, and the other end of resistance R15 connects inverse conductivity type switching device
FET1 and the gate pole of inverse conductivity type switching device FET2.
The type selecting of each components and parts above-mentioned in this example, it may be preferred to for:
Power supply: alternating current power supply 220V；
Diode D1-D2:600V, 1A/100 DEG C；
Electric capacity C1:500V, 100 μ F, be used for filtering；
Resistance R1:300k Ω；
Resistance R2:2k Ω；
Resistance R3:10k Ω；
Resistance R4:5k Ω；
Resistance R5-R7:1k Ω；
Stabilivolt ZD1:10V, 1A/100 DEG C；
Resistance R8:2k Ω；
Audion TR1:NPN type, 9013；
Electric capacity C2:10nF；
Resistance R9:1k Ω；
Resistance R10:1k Ω；
Resistance R11:2k Ω；
Resistance R12:1k Ω；
Resistance R13:1k Ω；
Resistance R14:2k Ω；
Resistance R15:1k Ω；
Inverse conductivity type switching device FET1-FET2:33V, 1A/100 DEG C；
Amplifier OP1-OP2:LM358.
During whole circuit specific works:
As it is shown in figure 1, full-wave rectifying circuit is first to input ac voltage (Ui) rectification, form full-wave rectified voltage.Connect
And carried out dividing potential drop by resistance R1 and resistance R2, obtain suitable voltage, and be linked into by subtracting that amplifier OP1 and peripheral resistance are constituted
Carrying out subtraction in musical instruments used in a Buddhist or Taoist mass, its outfan obtains the voltage waveform with sine wave.This voltage (Uo) be input to carry
After wave generation circuit being charged electric capacity C2, the voltage at electric capacity C2 two ends gradually rises.When the voltage of electric capacity C2 reaches by transporting
When putting the anti-phase input terminal voltage of the comparator that OP2 is constituted with peripheral resistance, comparator is just output as, inverse conductivity type switching device
FET1 and inverse conductivity type switching device FET2 gate pole are applied in forward voltage and turn on, and the electric charge on electric capacity C1 switchs via inverse conductivity type
Device FET1 is quickly released, and electric capacity C2 both end voltage declines immediately, simultaneously as the gate pole of inverse conductivity type switching device FET2 is also
Conducting, in resistance R11 access circuit, the anti-phase input terminal voltage of comparator drops due to resistance R11 and resistance R12 parallel connection
Low.When the voltage on electric capacity C2 is reduced to lower than the new anti-phase input terminal voltage of comparator, the outfan of comparator becomes
Being 0, inverse conductivity type switching device FET1 and inverse conductivity type switching device FET2 gate pole turn off, and resistance R11 excises from circuit, simultaneously electricity
Hold C1 and stop electric discharge, start to recharge.When charging voltage is higher than the anti-phase input terminal voltage of comparator, comparator is output as
Just, electric capacity C2 starts electric discharge, so moves in circles.Owing to the speed of electric capacity C2 both end voltage rising is with the output of falling sinewave circuit
Voltage be associated, voltage is the highest, and electric capacity charging is the fastest, therefore along with electric capacity C2 periodically charging and discharging, electric capacity C2 two ends
It is the formation of with falling the sinusoidal wave triangular carrier matched.
The present invention uses hardware circuit to build the carrier generating circuit of pulse frequency modulated, and generally uses microcontroller
Comparing, the cost of the present invention is simpler, and owing to frequency changes, the hardware circuit designed by the present invention reduces EMI, with
Time, carrier frequency that what the present invention used fall time sinewave circuit makes voltage height is low, reduces the loss of switching device.The present invention
Decreasing the cost using controller and algorithm to realize, hardware circuit is simple, has certain application value
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise, this not shadow
Ring the flesh and blood of the present invention.In the case of not conflicting, the feature in embodiments herein and embodiment can any phase
Combination mutually.
Claims (3)
1. the carrier generating circuit of a pulse frequency modulated, it is characterised in that include down that sinewave circuit and carrier wave occur electricity
Road；The outfan of described sinewave circuit produces sine wave, and will pass to carrier generating circuit as input by sine wave,
Carrier generating circuit produces and falls sinusoidal wave corresponding triangular wave.
The carrier generating circuit of a kind of pulse frequency modulated the most according to claim 1, it is characterised in that described sine
Wave circuit includes full-wave rectifying circuit and subtraction circuit, and full-wave rectifying circuit includes diode D1, diode D2 and electric capacity C1,
Subtraction circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and amplifier OP1；Wherein:
The anode of diode D1 one end with ac power input end ACL and electric capacity C1 respectively is connected, and the anode of diode D2 divides
Be not connected with the other end of ac power input end CAN and electric capacity C1, the negative electrode of diode D2 respectively with the negative electrode of diode D1
Being connected with one end of resistance R1, the other end of resistance R1 one end with resistance R2 and resistance R6 respectively is connected, another of resistance R2
End ground connection, an end of resistance R3 receives 15V voltage, and the other end of resistance R3 one end with resistance R4 and resistance R5 respectively is connected,
The other end ground connection of resistance R4, the other end of resistance R5 receives the in-phase input end of amplifier OP1, and the other end of resistance R6 receives fortune
Putting the reverse input end of OP1, and be connected with one end of resistance R7, amplifier OP1 connects 15V voltage, the outfan of amplifier OP1 and resistance
The other end of R7 is connected.
The carrier generating circuit of a kind of pulse frequency modulated the most according to claim 2, it is characterised in that described carrier wave is sent out
Raw circuit include stabilivolt ZD1, audion TR1, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13,
Resistance R14, resistance R15, electric capacity C2, inverse conductivity type switching device FET1, inverse conductivity type switching device FET2 and amplifier OP2；Wherein:
The negative electrode of stabilivolt ZD1 is connected with the outfan of amplifier OP1 and the colelctor electrode of audion TR1 respectively, the sun of stabilivolt ZD1
Pole is connected with one end, the base stage of audion TR1 of resistance R8 respectively, the other end ground connection of resistance R8, the emitter stage of audion TR1
It is connected with one end of electric capacity C2, the inverse drain electrode of conductivity type switching device FET1 and one end of resistance R9 respectively, the other end of electric capacity C2
Ground connection, the other end of resistance R9 is connected with one end of resistance R13, and the other end of R13 receives the in-phase input end of amplifier OP2, electricity
One end of resistance R10 receives 15V voltage, the other end of resistance R10 respectively with one end phase of resistance R11, resistance R12 and resistance R14
Even, the other end of resistance R11 receives the drain electrode of inverse conductivity type switching device FET2, and the other end of resistance R12 receives the anti-of amplifier OP2
Phase input, the other end ground connection of resistance R14, amplifier OP2 connects 15V voltage, the outfan of amplifier OP2 and the one of resistance R15
End is connected, the other end of resistance R15 respectively with the gate pole of inverse conductivity type switching device FET1 and the door of inverse conductivity type switching device FET2
The most connected, the source electrode of inverse conductivity type switching device FET1 and the source ground of inverse conductivity type switching device FET2, the two ends of electric capacity C2 are made
Outfan for whole carrier generating circuit.
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|---|---|---|---|
| CN201610651536.9A CN106300958B (en) | 2016-08-10 | 2016-08-10 | A kind of carrier generating circuit of pulse frequency modulated |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610651536.9A CN106300958B (en) | 2016-08-10 | 2016-08-10 | A kind of carrier generating circuit of pulse frequency modulated |
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| CN106300958B CN106300958B (en) | 2019-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831187A (en) * | 2019-03-28 | 2019-05-31 | 上海交通大学 | A kind of changeable frequency triangular carrier generation circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1794578A (en) * | 2006-01-12 | 2006-06-28 | 上海交通大学 | Switching frequency period modulated triangle wave generating circuit |
| CN101404443A (en) * | 2008-06-05 | 2009-04-08 | 美芯晟科技（北京）有限公司 | Pulse-width modulator and boosting type converter employing the same |
| CN102158069A (en) * | 2011-05-03 | 2011-08-17 | 杭州矽力杰半导体技术有限公司 | Power factor correction circuit |
| US20130033208A1 (en) * | 2007-11-02 | 2013-02-07 | Seiko Epson Corporation | Pwm control circuit and pwm control method |
-
2016
- 2016-08-10 CN CN201610651536.9A patent/CN106300958B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1794578A (en) * | 2006-01-12 | 2006-06-28 | 上海交通大学 | Switching frequency period modulated triangle wave generating circuit |
| US20130033208A1 (en) * | 2007-11-02 | 2013-02-07 | Seiko Epson Corporation | Pwm control circuit and pwm control method |
| CN101404443A (en) * | 2008-06-05 | 2009-04-08 | 美芯晟科技（北京）有限公司 | Pulse-width modulator and boosting type converter employing the same |
| CN102158069A (en) * | 2011-05-03 | 2011-08-17 | 杭州矽力杰半导体技术有限公司 | Power factor correction circuit |
Non-Patent Citations (1)
| Title |
|---|
| 江剑峰: ""多级交错单相有源功率因数校正器的研究"", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831187A (en) * | 2019-03-28 | 2019-05-31 | 上海交通大学 | A kind of changeable frequency triangular carrier generation circuit |
| CN109831187B (en) * | 2019-03-28 | 2021-01-05 | 上海交通大学 | Variable-frequency triangular carrier generation circuit |
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|---|---|
| CN106300958B (en) | 2019-05-24 |
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