CN208424226U - A kind of wide input conversion circuit - Google Patents
A kind of wide input conversion circuit Download PDFInfo
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- CN208424226U CN208424226U CN201820976665.XU CN201820976665U CN208424226U CN 208424226 U CN208424226 U CN 208424226U CN 201820976665 U CN201820976665 U CN 201820976665U CN 208424226 U CN208424226 U CN 208424226U
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Abstract
The utility model provides a kind of wide input conversion circuit, more can accurately adjust output voltage, and reduce the volume of power supply product under the premise of not using voltage-stablizer.A kind of wide input conversion circuit, including input conversion module, first capacitor, voltage acquisition module, the second capacitor, processing and control module and N number of voltage transformation module, processing and control module control each voltage transformation module of N successively turns on and off, it is suitable in wide input voltage range, the constant conduction of conversion circuit.
Description
Technical field
The utility model relates to field of power supplies, specifically, the input conversion circuit being related in power supply.
Background technique
In field of switch power, the voltage range of input is bigger, and the difficulty of power supply design is higher, simultaneously because needing to examine
Consider the environment of various inputs, it is very low that when design unavoidably will lead to its efficiency.
To increase efficiency, now it is often used AC voltage regulator and comes so that power supply product actually enters voltage stabilization in some model
It encloses, but voltage-stablizer is bulky, expensive, is not available this method in the power supply of smaller power, be now badly in need of a kind of energy reduction
The wide input conversion circuit for actually entering voltage range of power supply product.
Utility model content
In order to solve the problems in the existing technology, the utility model provides a kind of wide input conversion circuit, Neng Gou
Under the premise of without using voltage-stablizer, output voltage is more accurately adjusted, and reduce the volume of power supply product.
The utility model is achieved through the following technical solutions:
A kind of wide input conversion circuit, including input conversion module, first capacitor, voltage acquisition module, the second capacitor, place
Control module and N number of voltage transformation module are managed, N is the natural number more than or equal to 1；
The input terminal of the input conversion module connects input voltage, institute as the input terminal of the wide input conversion circuit
With stating the internal reference of the output negative pole of input conversion module as the wide input conversion circuit, the input conversion module
The positive input terminal of output cathode and positive, the described voltage acquisition module of the first capacitor, the voltage transformation module it is defeated
Enter end connection, the output end of the voltage transformation module is connected with the anode of second capacitor；The first capacitor is born
The inside ginseng of the negative input end of pole and the voltage acquisition module, the cathode of second capacitor, the wide input conversion circuit
It connects with examining, the first input end of the processing and control module is connect with the output end of the voltage acquisition module, the processing
The output end output road the N control signal of control module is connect with N number of voltage transformation module control terminal respectively.
Preferably, the input conversion module includes rectifier bridge, and the ac input end of the rectifier bridge is that the input turns
The input terminal of block is changed the mold, the output cathode of the rectifier bridge is the output cathode of the input conversion module, the rectifier bridge
Output negative pole is the output negative pole of the input conversion module.
Preferably, the voltage transformation module includes turn-off thyristor GTO, voltage processing module and unidirectional anti-tampering mould
Block, the anode of the turn-off thyristor GTO are the input terminal of the voltage transformation module, the turn-off thyristor GTO's
Gate pole is the voltage transformation module control terminal, and the cathode of the turn-off thyristor GTO is defeated with the voltage processing module
Enter end connection, the output end of the voltage processing module is connect with the input terminal of the unidirectional anti-tampering module, described unidirectional anti-
The output end of interference module is the output end of the voltage transformation module.
Preferably, the voltage transformation module includes triode thyristor SCR, voltage processing module and unidirectional anti-tampering mould
Block, the anode of the triode thyristor SCR are the input terminal of the voltage transformation module, the gate pole of the triode thyristor SCR
For the control terminal of the voltage transformation module, the input terminal of the cathode of the triode thyristor SCR and the voltage processing module
Connection, the output end of the voltage processing module are connect with the input terminal of the unidirectional anti-tampering module, described unidirectional anti-tampering
The output end of module is the output end of the voltage transformation module.
Preferably, each output end of the processing and control module includes output gate leve end, output cathode end, the voltage
The control terminal of conversion module includes control gate leve end, control cathode terminal, and the gate leve of the triode thyristor SCR is converted as voltage
The control gate leve end of device connects the output gate leve end of the processing and control module, and the cathode of the triode thyristor SCR is as electricity
The control cathode end of pressure converter connects the output cathode end of the processing and control module.
Preferably, the unidirectional anti-tampering module includes a diode, and the anode of the diode is described unidirectional anti-
The input terminal of interference module, the cathode of the diode are the output end of the unidirectional anti-tampering module.
Preferably, the step-up ratio between N number of voltage transformation module and step-down ratio are all different, suitable for different defeated
Enter voltage.
The beneficial effects of the utility model are as follows:
1, output voltage can more accurately be adjusted according to cost and volume by possessing multiple voltage transformation modules；
2, possess unidirectional anti-tampering module, the voltage transformation module of different structure can be suitable for；
3, voltage transformation module can should not, can be boost module, can be voltage reduction module, possess multiple selections；
4, input conversion module selects rectifier bridge, it can be achieved that alternating current-direct current inputs.
Detailed description of the invention
Fig. 1 is the utility model first embodiment circuit diagram；
Fig. 2 is the utility model second embodiment circuit diagram.
Specific embodiment
First embodiment
A kind of wide input conversion circuit comprising: input conversion module, first capacitor C1, voltage acquisition module, the second electricity
Hold C2, processing and control module, N number of voltage transformation module, N is the natural number more than or equal to 1；
Its connection relationship are as follows: the input terminal of the input conversion module is as a kind of input of wide input conversion circuit
End connection input voltage vin, the output negative pole of the input conversion module are a kind of inside ginseng of wide input conversion circuit
Examine ground, the positive input of positive, the described voltage acquisition module of the output cathode and first capacitor of the input conversion module
The input terminal connection at end, N number of voltage transformation module, the output end of the voltage transformation module and second capacitor are just
Pole is connected, the cathode of the first capacitor and the negative input end of the voltage acquisition module, the cathode of second capacitor, institute
It connects with stating a kind of internal reference of wide input conversion circuit, the first input end of the processing and control module is adopted with the voltage
Collect the output end connection of module, the output end output road the N control signal of the processing and control module turns with N number of voltage respectively
The connection of block control terminal is changed the mold, the processing and control module is corresponding with the voltage transformation module there are multiple output ends.
Inputting conversion module includes rectifier bridge, and the ac input end of the rectifier bridge is the input of the input conversion module
End, the output cathode of the rectifier bridge are the output cathode of the input conversion module, and the output negative pole of the rectifier bridge is institute
State the output negative pole of input conversion module.
Rectifier bridge, which can be realized, converts direct current signal, and the direct current that can input any direction for the AC signal of input
Signal is changed into the direct current signal of a specific direction, and the use for meeting subsequent conditioning circuit can be handled, which possesses reliability
Advantage high, at low cost.
Voltage transformation module includes turn-off thyristor GTO, voltage processing module, unidirectional anti-tampering module, described to close
The anode of disconnected thyristor GTO is the input terminal of the voltage transformation module, and the gate pole of the turn-off thyristor GTO is the electricity
Conversion module control terminal is pressed, the cathode of the turn-off thyristor GTO is connect with the input terminal of the voltage processing module, described
The output end of voltage processing module is connect with the input terminal of the unidirectional anti-tampering module, the output of the unidirectional anti-tampering module
End is the output end of the voltage transformation module.
When the anode voltage of turn-off thyristor GTO is higher than the cathode voltage of turn-off thyristor GTO, awarding can be turned off
When the gate leve end of thyristor GTO inputs open signal, turn-off thyristor GTO can be connected, and it is brilliant to shutdown to turn off only needs
Brake tube GTO cut-off signals, are compared and triode thyristor, the simpler reliability of the control circuit of turn-off thyristor GTO
Also higher, voltage processing module is used to go up and down the electric signal by cutoff thyristor GTO, and multiple voltage transformation modules all have liter
Pressure ratio and step-down ratio, and the step-up ratio of each voltage transformation module and step-down ratio are different, suitable for different input voltages
Selection；
Assuming that one wide input conversion circuit, there are four voltage transformation module, step-up ratio successively reduces from one to four, then its
Inside possesses 5 voltage threshold points, then when in the collected first capacitor of voltage acquisition module voltage be lower than first threshold voltage,
Then the cutoff thyristor GTO of four power conversion modules is subject to processing control module control and is in off-state, no-voltage conversion
Module conducting, when voltage lower than second threshold voltage and is higher than first threshold electricity in the collected first capacitor of voltage acquisition module
Pressure, then processing and control module controls the turn-off thyristor GTO conducting of first voltage transformation module；When voltage acquisition module is adopted
Voltage lower than third threshold voltage and is higher than second threshold voltage in the first capacitor collected, then processing and control module control second
The turn-off thyristor GTO of a voltage transformation module is connected；When voltage is lower than in the collected first capacitor of voltage acquisition module
4th threshold voltage and it is higher than third threshold voltage, then processing and control module control third voltage transformation module turns off crystalline substance
Brake tube GTO conducting；When voltage is higher than the 5th threshold voltage in the collected first capacitor of voltage acquisition module, then four power supplys turn
The cutoff thyristor GTO of mold changing block is subject to processing control module control and is in off-state, the conducting of no-voltage conversion module.With this
Output voltage to guarantee wide input conversion circuit is more stable.Unidirectional anti-clutter circuit is that the second capacitance voltage is not in order to prevent
Lead to the system failure with voltage processing module is influenced.
Unidirectional anti-tampering module includes first diode, and the anode of the diode is the defeated of the unidirectional anti-tampering module
Enter end, the cathode of the diode is the output end of the unidirectional anti-tampering module.
Unidirectional anti-tampering function is realized using the one-way conduction characteristic of diode.
The working principle of the utility model are as follows: direct current is converted by rectifier bridge when alternating current inputs, to first capacitor
Charging, voltage acquisition module acquires the voltage in first capacitor in real time, and is transferred to processing and control module, when processing controls mould
When the signal that block recognizes voltage acquisition module transmission reaches a threshold value, control signal is exported to first voltage modulus of conversion
The control terminal (gate leve of GTO) of block, the turn on thyristors of first voltage transformation module, the voltage in first capacitor pass through voltage
Processing modules implement boosting, the direct current after boosting give the second capacitor charging by diode, when all balances, the second capacitor
On voltage be greater than first capacitor on voltage；
When input voltage rises to second threshold, control signal is exported to the control of first and second voltage transformation module
End (the thyristor shutdown of first voltage transformation module of control, the turn on thyristors of second voltage transformation module), first
The thyristor shutdown of voltage transformation module, second voltage transformation module turn on thyristors, the voltage in first capacitor passes through
The smaller boosting ratio of second voltage processing module gives the second capacitor charging by diode, guarantees the voltage change on the second capacitor
It is smaller, while lesser boosting ratio, moreover it is possible to facilitate raising efficiency.
Voltage continues to rise when processing and control module recognizes the next signal of voltage acquisition module transmission to a last threshold
Control signal is exported when value to the control terminal of N-1, N number of voltage transformation module, the thyristor of n-th voltage transformation module is led
Logical, the thyristor of other voltage transformation modules turns off, and the voltage in first capacitor passes through the voltage of n-th voltage transformation module
Processing modules implement decompression, the direct current after decompression give the second capacitor charging by the diode of n-th voltage transformation module, most
Guarantee that a kind of output voltage variation for inputting conversion circuit is smaller under all input environments eventually.
Direct current can also be used in the input conversion circuit input of this width, and working method is identical when inputting with exchange, and inputs not
Divide positive and negative.
Second embodiment
Different from the first embodiment the turn-off thyristor GTO converted the voltage into module is changed to common brilliant lock
Pipe SCR.
Voltage transformation module includes triode thyristor SCR, voltage processing module, unidirectional anti-tampering module, the common crystalline substance
The gate pole of brake tube SCR is the control gate leve end of the voltage transformation module, the cathode and the voltage of the triode thyristor SCR
The input terminal connection at the control cathode end, the voltage processing module of conversion module, the anode of the triode thyristor SCR is institute
State the input terminal of voltage transformation module, the input terminal company of the output end of the voltage processing module and the unidirectional anti-tampering module
It connects, the output end of the unidirectional anti-tampering module is the output end of the voltage transformation module.
Each output end of the processing and control module includes output gate leve end, output cathode end, the voltage modulus of conversion
The control terminal of block includes control gate leve end, control cathode terminal, and the output gate leve end of the processing and control module and the voltage turn
Change the mold the control gate leve end connection of block, the output cathode end of the processing and control module and the control yin of the voltage transformation module
The connection of grade end.
Triode thyristor SCR is changed to by turn-off thyristor GTO, although can be slightly complicated in control, when common brilliant lock
Voltage on cathode of the voltage greater than triode thyristor SCR on the anode of pipe SCR, awards the gate leve end input of triode thyristor SCR
Open signal, triode thyristor SCR conducting, when voltage is higher than on triode thyristor SCR anode on triode thyristor SCR cathode
Triode thyristor SCR could be turned off when the voltage that voltage is less than or equal on triode thyristor SCR cathode, use cutoff thyristor
GTO needs to increase in processing and control module the circuit of driving cutoff thyristor GTO, but triode thyristor SCR is brilliant compared to shutdown
Brake tube GTO possesses the fireballing advantage of control at low cost.
Above embodiments are merely used to help understand the method and core concept of the utility model, to the general of the art
For logical technical staff, without departing from the principle of this utility model, it can be associated naturally by above description and citing
Other equivalent application schemes, and carry out several improvement and modification to the utility model, each fall within the power of the utility model
The protection scope of sharp claim.
Claims (7)
1. a kind of wide input conversion circuit, it is characterised in that: include: input conversion module, first capacitor, voltage acquisition module,
Second capacitor, processing and control module and N number of voltage transformation module, N are the natural number more than or equal to 1；
The input terminal of the input conversion module connects input voltage as the input terminal of the wide input conversion circuit, described defeated
With entering the internal reference of the output negative pole of conversion module as the wide input conversion circuit, the output of the input conversion module
The input terminal of the positive input terminal of positive positive, the described voltage acquisition module with the first capacitor, the voltage transformation module
Connection, the output end of the voltage transformation module are connected with the anode of second capacitor；The cathode of the first capacitor with
The internal reference of the negative input end of the voltage acquisition module, the cathode of second capacitor, the wide input conversion circuit
Connection, the first input end of the processing and control module are connect with the output end of the voltage acquisition module, the processing control
The output end output road the N control signal of module is connect with N number of voltage transformation module control terminal respectively.
2. a kind of wide input conversion circuit according to claim 1, it is characterised in that: the input conversion module includes whole
Bridge is flowed, the ac input end of the rectifier bridge is the input terminal of the input conversion module, and the output cathode of the rectifier bridge is
The output cathode of the input conversion module, the output negative pole of the rectifier bridge are the output negative pole of the input conversion module.
3. a kind of wide input conversion circuit according to claim 1, it is characterised in that: the voltage transformation module includes can
Cutoff thyristor GTO, voltage processing module and unidirectional anti-tampering module, the anode of the turn-off thyristor GTO are the electricity
The input terminal of conversion module is pressed, the gate pole of the turn-off thyristor GTO is the voltage transformation module control terminal, described to close
The cathode of disconnected thyristor GTO is connect with the input terminal of the voltage processing module, the output end of the voltage processing module and institute
The input terminal connection of unidirectional anti-tampering module is stated, the output end of the unidirectional anti-tampering module is the defeated of the voltage transformation module
Outlet.
4. a kind of wide input conversion circuit according to claim 1, it is characterised in that: the voltage transformation module includes general
Logical thyristor SCR, voltage processing module and unidirectional anti-tampering module, the anode of the triode thyristor SCR turn for the voltage
The input terminal of block is changed the mold, the gate pole of the triode thyristor SCR is the control terminal of the voltage transformation module, the common brilliant lock
The cathode of pipe SCR is connect with the input terminal of the voltage processing module, the output end of the voltage processing module and described unidirectional
The input terminal of anti-tampering module connects, and the output end of the unidirectional anti-tampering module is the output end of the voltage transformation module.
5. a kind of wide input conversion circuit according to claim 4, it is characterised in that: each of described processing and control module
Output end includes output gate leve end, output cathode end, and the control terminal of the voltage transformation module includes control gate leve end, control yin
Extremely, the gate leve of the triode thyristor SCR connects the processing and control module as the control gate leve end of electric pressure converter
Gate leve end is exported, the cathode of the triode thyristor SCR connects the processing control as the control cathode end of electric pressure converter
The output cathode end of module.
6. a kind of wide input conversion circuit according to claim 3 to 5 any one, it is characterised in that: described unidirectional anti-
Interference module includes a diode, and the anode of the diode is the input terminal of the unidirectional anti-tampering module, two pole
The cathode of pipe is the output end of the unidirectional anti-tampering module.
7. a kind of wide input conversion circuit as claimed in claim 6, it is characterised in that: between N number of voltage transformation module
Step-up ratio and step-down ratio be all different, suitable for different input voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820976665.XU CN208424226U (en) | 2018-06-25 | 2018-06-25 | A kind of wide input conversion circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820976665.XU CN208424226U (en) | 2018-06-25 | 2018-06-25 | A kind of wide input conversion circuit |
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| CN208424226U true CN208424226U (en) | 2019-01-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737366A (en) * | 2020-12-29 | 2021-04-30 | 核工业西南物理研究院 | Thyristor power supply control system powered by pulse generator |
| CN113410997A (en) * | 2020-03-16 | 2021-09-17 | 李尔公司 | OBC pre-charging system based on voltage and PFC |
-
2018
- 2018-06-25 CN CN201820976665.XU patent/CN208424226U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410997A (en) * | 2020-03-16 | 2021-09-17 | 李尔公司 | OBC pre-charging system based on voltage and PFC |
| CN113410997B (en) * | 2020-03-16 | 2023-02-28 | 李尔公司 | OBC pre-charging system based on voltage and PFC |
| CN112737366A (en) * | 2020-12-29 | 2021-04-30 | 核工业西南物理研究院 | Thyristor power supply control system powered by pulse generator |
| CN112737366B (en) * | 2020-12-29 | 2023-09-08 | 核工业西南物理研究院 | Thyristor power supply control system powered by pulse generator |
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