CN206850681U - Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit - Google Patents
Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit Download PDFInfo
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- CN206850681U CN206850681U CN201720453934.XU CN201720453934U CN206850681U CN 206850681 U CN206850681 U CN 206850681U CN 201720453934 U CN201720453934 U CN 201720453934U CN 206850681 U CN206850681 U CN 206850681U
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- 239000013078 crystal Substances 0.000 claims abstract description 67
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000005669 field effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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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
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
- G05F1/562—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices with a threshold detection shunting the control path of the final control device
-
- 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
- H02M1/14—Arrangements for reducing ripples from DC input or output
- H02M1/15—Arrangements for reducing ripples from DC input or output using active elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/395—Linear regulators
-
- 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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The utility model embodiment provides a kind of ripple suppression circuit and the electric pressure converter including the ripple suppression circuit, the ripple suppression circuit includes first crystal triode, the second transistor and the 3rd transistor, the first crystal triode and second transistor are connected and are configured to Darlington transistor, the Darlington transistor that 3rd transistor is formed with by the first crystal triode and second transistor is in parallel, and the opening and closing to the Darlington transistor is controlled.The ripple suppression circuit need not use FET, but employ cheap transistor, so as to reduce manufacturing cost, and, because transistor is higher for voltage Vgs tolerance than FET for voltage Vbe tolerance, therefore output ripple can be accurately controlled.
Description
Technical field
It the utility model is related to voltage conversion technical field, more particularly to a kind of ripple suppression circuit and press down including the ripple
The electric pressure converter of circuit processed.
Background technology
The alternating voltage of input can be converted to DC voltage by electric pressure converter, and be exported to electrical appliance.In an allusion quotation
In the usage scenario of type, electric pressure converter for example can be electric ballast, and it can turn the net voltage of alternating voltage form
DC voltage is changed to, and is exported to electrical appliances such as light emitting diodes (Light-emitting Diode, LED).
In actual applications, certain alternating component can be included in the DC voltage exported by electric pressure converter, so as to
Produce output ripple.At present, typically can by set comprising field-effect transistor (Field Effect Transistor,
FET, hereinafter referred to as FET) output circuit suppressed.Fig. 1 is the circuit structure diagram of existing electric pressure converter.
As shown in figure 1, the electric pressure converter is a flyback converter (Flyback Converter), the ripple suppression shown in square frame
Circuit processed includes FET, wherein, input capacitance voltage Vbus is the DC source for including alternating component (ripple), C52, C53,
C54 is filter capacitor；Maximum of the voltage equal to Vbus on electric capacity C51 subtracts diode D53, D54 pressure drop, output end voltage
The voltage that (+LED--LED) is equal on electric capacity C51 subtracts FET M51 gs pressure drops (i.e. voltage Vgs).Selection is suitable
D54 voltage stabilizing values, make D53, D54 pressure drop and M51 gs pressure drops sum be equal to C52 ripple peak-to-peak value, due to M51 gain very
It is big, it is necessary to driving current very little, the voltage on C51 is held essentially constant, so ripple voltage is substantially dropped on M51,
Output end+LED substantially only exports direct current component, reaches the purpose for eliminating ripple.In addition, D55 is voltage-regulator diode, for limiting
M51 processed voltage Vgs, M51 is avoided to be damaged because voltage Vgs is too high.
It should be noted that the introduction to technical background above is intended merely to conveniently carry out clearly the technical solution of the utility model
Chu, complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Can not merely because these schemes in this practicality
New background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
Utility model content
Inventor of the present utility model has found, in existing ripple suppression circuit, due to needing to set high rated current
FET so that manufacturing cost is higher, in addition, the voltage Vgs of FET deviation will cause very big output ripple
Deviate, in addition, in order to reach consistent Ripple Suppression effect in batch production, it is necessary to cover the pressure drop on FET
Vgs maximum deviation value, therefore, higher power loss will be caused using FET, it is necessary to set extra copper sheet, so as to
Manufacturing cost is caused further to increase.
The utility model embodiment provides a kind of ripple suppression circuit and the electric pressure converter including the ripple suppression circuit,
It need not use FET, but employ cheap transistor, so as to reduce manufacturing cost, and
And because transistor is higher for voltage Vgs tolerance than FET for voltage Vbe tolerance, therefore can
Output ripple is accurately controlled.
According to the first aspect of the utility model embodiment, there is provided a kind of ripple suppression circuit, wherein, the Ripple Suppression
Circuit includes first crystal triode, the second transistor and the 3rd transistor, the first crystal triode and institute
State the second transistor series connection and be configured to Darlington transistor, the 3rd transistor with by the first crystal triode
The Darlington transistor formed with second transistor is in parallel, and the opening and closing to the Darlington transistor is controlled.
According to the second aspect of the utility model embodiment, wherein, the first crystal triode, second crystal three
Pole pipe and the 3rd transistor are bipolar transistors.
According to the third aspect of the utility model embodiment, wherein, the first crystal triode, second crystal three
Pole pipe and the 3rd transistor are NPN bipolar transistors.
According to the fourth aspect of the utility model embodiment, wherein, the ripple suppression circuit also includes first resistor, the
Two resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first diode, the second diode and electric capacity, wherein, described first
Between the both positive and negative polarity for the input voltage that resistance and the electric capacity are connected in series in the ripple suppression circuit, the electric capacity and ground connection
It is connected in parallel after end connection, first diode and second Diode series connection with the first resistor, described the
The negative pole of one diode is connected with the negative pole of second diode, one end of the second resistance and second diode
Positive pole connects, and the other end connects with the base stage of second transistor and the colelctor electrode of the 3rd transistor,
The base stage of the first crystal triode connects with the emitter stage of second transistor, the first crystal triode
Colelctor electrode connects with the positive pole of first diode and the colelctor electrode of second transistor, the 3rd crystal three
The base stage of pole pipe is connected via the 5th resistance with the emitter stage of the first crystal triode, the 3rd resistor and described
Be connected to after 4th resistor coupled in parallel the first crystal triode emitter stage and the 3rd transistor emitter stage it
Between.
According to the 5th of the utility model embodiment the aspect, wherein, the electric capacity is electrochemical capacitor, second diode
It is voltage-regulator diode.
According to the 6th of the utility model embodiment the aspect, there is provided a kind of ripple suppression circuit, wherein, the Ripple Suppression
Circuit includes first crystal triode and the second transistor, second transistor and the first crystal triode
Parallel connection, the opening and closing to the first crystal triode are controlled.
According to the 7th of the utility model embodiment the aspect, wherein, the first crystal triode and second crystal
Triode is bipolar transistor.
According to the eighth aspect of the utility model embodiment, wherein, the first crystal triode and second crystal
Triode is NPN bipolar transistors.
According to the 9th of the utility model embodiment aspect, wherein, the ripple suppression circuit also includes first resistor, the
Two resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first diode, the second diode and electric capacity, wherein, described first
Between the both positive and negative polarity for the input voltage that resistance and the electric capacity are connected in series in the ripple suppression circuit, the electric capacity and ground connection
It is connected in parallel after end connection, first diode and second Diode series connection with the first resistor, described the
The negative pole of one diode is connected with the negative pole of second diode, one end of the second resistance and second diode
Positive pole connects, and the other end connects with the base stage of the first crystal triode and the colelctor electrode of second transistor,
The colelctor electrode of the first crystal triode connects with the positive pole of first diode, the base stage of second transistor
It is connected via the 5th resistance with the emitter stage of the first crystal triode, the 3rd resistor and the 4th resistance are simultaneously
It is connected to after connection between the emitter stage of the first crystal triode and the emitter stage of second transistor.
According to the tenth of the utility model embodiment the aspect, there is provided a kind of electric pressure converter, the electric pressure converter include
According to the ripple suppression circuit described in any one of the first of the utility model embodiment to the 9th aspect.
The beneficial effect of the utility model embodiment is：The ripple suppression circuit need not use FET, but
Cheap transistor is employed, so as to reduce manufacturing cost, also, because transistor is for voltage
Vbe tolerance is higher for voltage Vgs tolerance than FET, therefore output ripple can be accurately controlled.
With reference to following explanation and accompanying drawing, particular implementation of the present utility model is disclose in detail, specifies this practicality
New principle can be in a manner of adopted.It should be understood that embodiment of the present utility model in scope not thus by
Limitation.In the range of the spirit and terms of appended claims, embodiment of the present utility model includes many changes, modifications
With it is equivalent.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Included accompanying drawing is used for providing being further understood from the utility model embodiment, which constitutes specification
A part, for illustrating embodiment of the present utility model, and come together with word description to explain principle of the present utility model.It is aobvious
And easy insight, drawings in the following description are only some embodiments of the utility model, for those of ordinary skill in the art
For, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the circuit structure diagram of existing electric pressure converter；
Fig. 2 is the circuit structure diagram of the ripple suppression circuit of the utility model embodiment 1；
Fig. 3 is the circuit structure diagram of the ripple suppression circuit of the utility model embodiment 2.
Embodiment
Referring to the drawings, will be apparent by following specification, of the present utility model foregoing and further feature.Saying
In bright book and accompanying drawing, particular implementation of the present utility model is specifically disclosed, which show can wherein use this practicality new
The some embodiments of the principle of type, it will thus be appreciated that the utility model is not limited to described embodiment, on the contrary, this reality
With new whole modification, modification and equivalents including falling within the scope of the appended claims.
Embodiment 1
The utility model embodiment 1 provides a kind of ripple suppression circuit, and it is applied to be converted to the alternating voltage of input
In the electric pressure converter of DC voltage, so as to suppress the generation of output ripple.
Fig. 2 is the circuit structure diagram of the ripple suppression circuit of the utility model embodiment 1.As shown in Fig. 2 the Ripple Suppression
Circuit includes first crystal triode Q1, the second transistor Q2 and the 3rd transistor Q3, first crystal triode Q1
Connected with the second transistor Q2 and be configured to Darlington transistor, the 3rd transistor Q3 with by first crystal triode Q1 and
The Darlington transistor that second transistor Q2 is formed is in parallel, and the opening and closing to the Darlington transistor is controlled.
In the present embodiment, as a result of transistor, its price is more cheap, is manufactured into so as to reduce
This.Also, because transistor is higher for voltage Vgs tolerance than FET for voltage Vbe tolerance, therefore
Output ripple can be accurately controlled.
In the present embodiment, first crystal triode Q1 and the second transistor Q2 connects and is configured to Darlington transistor,
The gain coefficient of DC voltage can be improved, to reach the demand of application.
In the present embodiment, by the 3rd transistor Q3 to first crystal triode Q1 and the second transistor Q2
The opening and closing of the Darlington transistor of composition is controlled, for example, the Darlington transistor is closed in output short-circuit, so as to effectively protect
Protect first crystal triode Q1 and the second transistor Q2.
In the present embodiment, first crystal triode Q1, the second transistor Q2 and the 3rd transistor Q3 can be with
It is bipolar transistor, for example, Q1, Q2 and Q3 are NPN bipolar transistors.
As shown in Fig. 2 the ripple suppression circuit can also include：First resistor R1, second resistance R2,3rd resistor R3,
4th resistance R4, the 5th resistance R5, the first diode D1, the second diode D2 and electric capacity C,
Wherein, first resistor R1 and electric capacity C be connected in series in the input voltage vin of ripple suppression circuit both positive and negative polarity it
Between, electric capacity C is connected with earth terminal, and the first diode D1 and the second diode D2 are connected in series in parallel with first resistor R1 afterwards connect
Connect, the first diode D1 negative pole is connected with the second diode D2 negative pole, second resistance R2 one end and the second diode D2
Positive pole connection, the colelctor electrode connection of the other end and the second transistor Q1 base stage and the 3rd transistor Q3, the
One transistor Q1 base stage connects with the second transistor Q2 emitter stage, first crystal triode Q1 colelctor electrode and
First diode D1 positive pole and the second transistor Q2 colelctor electrode connect, the 3rd transistor Q3 base stage via
5th resistance R5 is connected with the emitter stage of first crystal triode, and first is connected to after 3rd resistor R3 and the 4th resistance R4 parallel connections
Between transistor Q1 emitter stage and the 3rd transistor Q3 emitter stage.Wherein, electric capacity C is electrochemical capacitor, second
Diode D2 is voltage-regulator diode.
Hereinafter, the principle to the ripple suppression circuit and action carry out exemplary explanation.The ripple suppression circuit it is defeated
It is the DC source for include alternating component (ripple) to enter voltage Vin (correspond to Vbus in Fig. 1), and voltage is equal to Vin most on electric capacity C
Big value subtracts the first diode D1, the second diode D2 pressure drops, and output voltage Vout is equal to voltage on electric capacity C and subtracts the pole of crystal three
Pipe Q1, Q2 be pressure drops (i.e. voltage Vbe).Select suitable D2 voltage stabilizings value, make diode D1, D2 pressure drop, transistor Q1,
Q2 be pressure drops sum is equal to Vin ripple peak-to-peak value, because the Darlington transistor gain of transistor Q1, Q2 composition is very big,
The driving current very little needed, the voltage on electric capacity C is held essentially constant, so ripple voltage substantially drops to the pole of crystal three
On pipe Q1, Vout substantially only exports direct current component, so as to reach the purpose for eliminating ripple.Wherein, transistor Q3 work
With being protection transistor Q1, Q2, when exporting Vout short circuits, electric current increases, and the pressure drop on resistance R3, R4 also increases, this
When pressure drop increases to the cut-in voltage of transistor Q3 base stages, Q3 conductings, it is short-circuited transistor Q2 base stages, crystal three
Pole pipe Q2, Q1 is ended, and avoids Q1, Q2 and occurs continuing high current and damaging.
From above-described embodiment, the ripple suppression circuit need not use FET, but employ cheap
Transistor, so as to reduce manufacturing cost, also, because tolerance of the transistor for voltage Vbe compares field
Effect pipe is high for voltage Vgs tolerance, therefore output ripple can be accurately controlled.
Embodiment 2
The utility model embodiment 2 also provides a kind of ripple suppression circuit, and it is applied to change the alternating voltage of input
For in the electric pressure converter of DC voltage, so as to suppress the generation of output ripple.
In the present embodiment, the structure of the ripple suppression circuit is similar with the structure in embodiment 1, and difference is,
Ripple suppression circuit in embodiment 2 instead of Darlington transistor using single transistor.
Fig. 3 is the circuit structure diagram of the ripple suppression circuit of the utility model embodiment 2.As shown in figure 3, the Ripple Suppression
Circuit includes first crystal triode Q1 and the second transistor Q2, the second transistor Q2 and first crystal triode Q1
Parallel connection, the opening and closing to first crystal triode Q1 are controlled.
In the present embodiment, first crystal triode Q1 has higher gain coefficient, to reach the demand of application.Its
In, second transistor Q2 is corresponding to the 3rd crystal diode Q3 in embodiment 1.
In the present embodiment, first crystal triode Q1, the second transistor Q2 can be bipolar transistors,
For example, Q1, Q2 are NPN bipolar transistors.
It is similar with Fig. 2, as shown in figure 3, the ripple suppression circuit can also include first resistor R1, second resistance R2, the
Three resistance R3, the 4th resistance R4, the 5th resistance R5, the first diode D1, the second diode D2 and electric capacity C, wherein, the first electricity
Between the both positive and negative polarity for the input voltage vin that resistance R1 and electric capacity C is connected in series in ripple suppression circuit, electric capacity C is connected with earth terminal,
First diode D1 and the second diode D2 be connected in series after is connected in parallel with first resistor R1, the first diode D1 negative pole and
Second diode D2 negative pole connection, second resistance R2 one end connect with the second diode D2 positive pole, the other end and first
Transistor Q1 base stage and the second transistor Q2 colelctor electrode connect, first crystal triode Q1 colelctor electrode and
First diode D1 positive pole connection, the second transistor Q2 base stage is via the 5th resistance R5 and first crystal triode Q1
Emitter stage connection, first crystal triode Q1 emitter stage and second is connected to after 3rd resistor R3 and the 4th resistance R4 parallel connections
Between transistor Q2 emitter stage.Wherein, electric capacity C is electrochemical capacitor, and the second diode D2 is voltage-regulator diode.
Hereinafter, the principle to the ripple suppression circuit and action carry out exemplary explanation.The ripple suppression circuit it is defeated
It is the DC source for include alternating component (ripple) to enter voltage Vin (correspond to Vbus in Fig. 1), and voltage is equal to Vin most on electric capacity C
Big value subtracts the first diode D1, the second diode D2 pressure drops, and output voltage Vout is equal to voltage on electric capacity C and subtracts the pole of crystal three
Pipe Q1 be pressure drops (i.e. voltage Vbe).Suitable D2 voltage stabilizings value is selected, makes diode D1, D2 pressure drop, transistor Q1 be
Pressure drop sum is equal to Vin ripple peak-to-peak value, due to transistor Q1 gain it is very big, it is necessary to driving current very little, electricity
The voltage held on C is held essentially constant, so ripple voltage is substantially dropped on transistor Q1, Vout is substantially only defeated
Go out direct current component, so as to reach the purpose for eliminating ripple.Wherein, transistor Q2 effect is protection transistor Q1,
When exporting Vout short circuits, electric current increases, and the pressure drop on resistance R3, R4 also increases, and this pressure drop increases to transistor Q2 bases
During the cut-in voltage of pole, Q2 conductings, transistor Q1 base stages are short-circuited, transistor Q1 cut-offs, avoid Q1 appearance
Continue high current and damage.
From above-described embodiment, the ripple suppression circuit need not use FET, but employ cheap
Transistor, so as to reduce manufacturing cost, also, because tolerance of the transistor for voltage Vbe compares field
Effect pipe is high for voltage Vgs tolerance, therefore output ripple can be accurately controlled.
Embodiment 3
The utility model embodiment 3 provides a kind of electric pressure converter, and the electric pressure converter is used for the alternating voltage of input
Be converted to DC voltage and export.
In the present embodiment, the electric pressure converter includes the ripple according to the utility model embodiment 1 or embodiment 2
Suppression circuit, the other structures of the electric pressure converter may be referred to prior art.
In the present embodiment, the electric pressure converter can be various types of electric pressure converters, and electric pressure converter institute is defeated
The DC voltage gone out can be provided to electrical appliance, and the electrical appliance is, for example, light emitting diode (LED) etc..
From above-described embodiment, the ripple suppression circuit in the electric pressure converter need not use FET, but
Cheap transistor is employed, so as to reduce manufacturing cost, also, because transistor is for voltage
Vbe tolerance is higher for voltage Vgs tolerance than FET, therefore output ripple can be accurately controlled.
The utility model is described above in association with specific embodiment, but those skilled in the art should be clear
Chu, these descriptions are all exemplary, are not the limitation to scope of protection of the utility model.Those skilled in the art can root
Various variants and modifications are made to the utility model according to spirit of the present utility model and principle, these variants and modifications are also in this reality
With in new scope.
Claims (10)
1. a kind of ripple suppression circuit, it is characterised in that the ripple suppression circuit includes first crystal triode, the second crystal
Triode and the 3rd transistor,
The first crystal triode and second transistor are connected and are configured to Darlington transistor,
3rd transistor be made up of the first crystal triode and second transistor described in reach
Islington pipe is in parallel, and the opening and closing to the Darlington transistor is controlled.
2. ripple suppression circuit according to claim 1, it is characterised in that the first crystal triode, described second
Transistor and the 3rd transistor are bipolar transistors.
3. ripple suppression circuit according to claim 2, it is characterised in that the first crystal triode, described second
Transistor and the 3rd transistor are NPN bipolar transistors.
4. ripple suppression circuit according to claim 1, it is characterised in that the ripple suppression circuit also includes the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first diode, the second diode and electric capacity, wherein,
Between the both positive and negative polarity for the input voltage that the first resistor and the electric capacity are connected in series in the ripple suppression circuit, institute
Electric capacity is stated to be connected with earth terminal,
It is connected in parallel after first diode and second Diode series connection with the first resistor, the described 1st
The negative pole of pole pipe is connected with the negative pole of second diode,
One end of the second resistance connects with the positive pole of second diode, the other end and second transistor
The colelctor electrode of base stage and the 3rd transistor connects,
The base stage of the first crystal triode connects with the emitter stage of second transistor, the pole of first crystal three
The colelctor electrode of pipe connects with the positive pole of first diode and the colelctor electrode of second transistor,
The base stage of 3rd transistor is connected via the 5th resistance with the emitter stage of the first crystal triode,
The emitter stage and described of the first crystal triode is connected to after the 3rd resistor and the 4th resistor coupled in parallel
Between the emitter stage of three transistors.
5. ripple suppression circuit according to claim 4, it is characterised in that
The electric capacity is electrochemical capacitor, and second diode is voltage-regulator diode.
6. a kind of ripple suppression circuit, it is characterised in that the ripple suppression circuit includes first crystal triode and the second crystalline substance
Body triode,
Second transistor is in parallel with the first crystal triode, and the opening and closing to the first crystal triode is carried out
Control.
7. ripple suppression circuit according to claim 6, it is characterised in that the first crystal triode and described second
Transistor is bipolar transistor.
8. ripple suppression circuit according to claim 7, it is characterised in that the first crystal triode and described second
Transistor is NPN bipolar transistors.
9. ripple suppression circuit according to claim 6, it is characterised in that the ripple suppression circuit also includes the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first diode, the second diode and electric capacity, wherein,
Between the both positive and negative polarity for the input voltage that the first resistor and the electric capacity are connected in series in the ripple suppression circuit, institute
Electric capacity is stated to be connected with earth terminal,
It is connected in parallel after first diode and second Diode series connection with the first resistor, the described 1st
The negative pole of pole pipe is connected with the negative pole of second diode,
One end of the second resistance connects with the positive pole of second diode, the other end and the first crystal triode
The colelctor electrode of base stage and second transistor connects,
The colelctor electrode of the first crystal triode connects with the positive pole of first diode,
The base stage of second transistor is connected via the 5th resistance with the emitter stage of the first crystal triode,
The emitter stage and described of the first crystal triode is connected to after the 3rd resistor and the 4th resistor coupled in parallel
Between the emitter stage of two transistors.
10. a kind of electric pressure converter, it is characterised in that the electric pressure converter is included according to any one of claim 1-9
Described ripple suppression circuit.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720453934.XU CN206850681U (en) | 2017-04-27 | 2017-04-27 | Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit |
| GB1719319.4A GB2561934B (en) | 2017-04-27 | 2017-11-21 | Ripple suppression circuit |
| PCT/CN2018/083338 WO2018196654A1 (en) | 2017-04-27 | 2018-04-17 | Ripple suppression circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720453934.XU CN206850681U (en) | 2017-04-27 | 2017-04-27 | Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206850681U true CN206850681U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720453934.XU Active CN206850681U (en) | 2017-04-27 | 2017-04-27 | Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN206850681U (en) |
| GB (1) | GB2561934B (en) |
| WO (1) | WO2018196654A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196654A1 (en) * | 2017-04-27 | 2018-11-01 | Tridonic Gmbh & Co Kg | Ripple suppression circuit |
| WO2021248266A1 (en) * | 2020-06-08 | 2021-12-16 | Tridonic Gmbh & Co Kg | Ripple suppression circuit, controlling method and driving equipment |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121781B2 (en) * | 1973-05-02 | 1976-07-05 | ||
| US3916294A (en) * | 1974-03-21 | 1975-10-28 | Magnavox Co | Cable television substation regulated power supply with ripple suppression |
| US4433368A (en) * | 1981-04-01 | 1984-02-21 | Samsung Electronics Co., Ltd. | Power supply circuit for a variable electrical source |
| JP2649950B2 (en) * | 1988-07-19 | 1997-09-03 | 旭光学工業株式会社 | Power supply |
| CN102570798B (en) * | 2010-12-30 | 2014-06-11 | 深圳市英威腾电气股份有限公司 | Method for realizing constant voltage-second product auxiliary power supply in forward switching power supply and circuit |
| CN102412743A (en) * | 2011-12-15 | 2012-04-11 | 苏州合欣美电子科技有限公司 | Series voltage stabilizing circuit for low-power supply circuit |
| CN103066817A (en) * | 2012-12-24 | 2013-04-24 | 成都芯源系统有限公司 | Ripple suppression circuit, power supply system thereof and ripple suppression method |
| CN104283418A (en) * | 2014-10-21 | 2015-01-14 | 安庆中轴科技有限公司 | Micro power consumption voltage stabilizer for quartz clock lithium battery |
| CN206850681U (en) * | 2017-04-27 | 2018-01-05 | 赤多尼科两合股份有限公司 | Ripple suppression circuit and the electric pressure converter including the ripple suppression circuit |
-
2017
- 2017-04-27 CN CN201720453934.XU patent/CN206850681U/en active Active
- 2017-11-21 GB GB1719319.4A patent/GB2561934B/en active Active
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2018
- 2018-04-17 WO PCT/CN2018/083338 patent/WO2018196654A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196654A1 (en) * | 2017-04-27 | 2018-11-01 | Tridonic Gmbh & Co Kg | Ripple suppression circuit |
| WO2021248266A1 (en) * | 2020-06-08 | 2021-12-16 | Tridonic Gmbh & Co Kg | Ripple suppression circuit, controlling method and driving equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018196654A1 (en) | 2018-11-01 |
| GB201719319D0 (en) | 2018-01-03 |
| GB2561934B (en) | 2022-02-23 |
| GB2561934A (en) | 2018-10-31 |
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