CN108494257A - Power circuit with output regulatory function - Google Patents
Power circuit with output regulatory function Download PDFInfo
- Publication number
- CN108494257A CN108494257A CN201810245139.0A CN201810245139A CN108494257A CN 108494257 A CN108494257 A CN 108494257A CN 201810245139 A CN201810245139 A CN 201810245139A CN 108494257 A CN108494257 A CN 108494257A
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- Prior art keywords
- switch
- output
- circuit
- capacitance
- shaping
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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
- H02M3/33569—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 having several active switching elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Present disclose provides a kind of power circuits with output regulatory function, including first switch, second switch, third switch, the 4th switch, main switch, comparator, voltage conversion circuit, inductance, the first capacitance, the second capacitance, third capacitance, output filter circuit and output Shaping circuit.
Description
Technical field
This disclosure relates to a kind of power supply more particularly to a kind of power circuit with output regulatory function.
Background technology
In power supply in use, according to external condition, the confession of the deenergization when generating abnormal is needed to give to provide protection, and
And for the power supply of switch form, the voltage between the both ends of output end is higher therefore to need the connecting line at both ends to have higher
Voltage endurance capability, and in order to obtaining desired output, it usually needs handled accordingly output.
Invention content
In order to solve the above-mentioned technical problem, present disclose provides a kind of power circuits with output regulatory function.
According to one aspect of the disclosure, a kind of power circuit is provided, including first switch, second switch, third are opened
Pass, the 4th switch, main switch, comparator, voltage conversion circuit, inductance, the first capacitance, the second capacitance and third capacitance,
One end of one end connection power input of the first switch, the other end connect one end of second switch；
The other end of the other end connection power input of the second switch；
One end of one end connection power input of the third switch, one end of the 4th switch of other end connection；
The other end of the other end connection power input of 4th switch；
The main switch is arranged on one end of the power input, the break-make for controlling the power input；
The comparator is used to compare the input voltage and reference voltage of power input, and comparison signal is exported to the electricity
Press translation circuit；
The voltage conversion circuit is used for the output signal according to the comparator, generates the electricity for being suitable for controlling the main switch
Pressure, to disconnect the control source of the power input when the input voltage is higher than the reference voltage；
Inductance, the first capacitance and the second capacitance form series circuit, and one end of the series circuit is connected to described first
The junction of switch and second switch, the other end of series circuit is as output；
One end of the third capacitance is connected to the junction of the third switch and the 4th switch, and the other end is as output；It is defeated
Go out the both sides that filter circuit is connected to output end, for being filtered to output voltage；And
Output Shaping circuit is connected to the both sides of output end, for carrying out shaping to output voltage.
According to the disclosure specific implementation mode, the capacitance of the third capacitance is equal to first capacitance and the
The sum of the capacitance of two capacitances.
According to the disclosure specific implementation mode, the voltage conversion circuit include diode and first resistor and
Connection circuit, one end connection reference voltage of the parallel circuit, other end connecting valve element, parallel circuit and switch element
Junction is as voltage output end, and when the input voltage is higher than the reference voltage, by the control of switch element,
And the voltage of the voltage output end is controlled to scheduled voltage value.
According to the disclosure specific implementation mode, the switch element of the voltage conversion circuit includes four switch members
Part, wherein
The grid of first switching element connects the output of the comparator, grounded drain, and source electrode connects the second switch element
Drain electrode；
The grid of second switch element connects voltage conversion circuit, and source electrode connects reference voltage；
The grid of third switch element is connected to junction and the 4th switch member of first switching element and second switch element
The grid of part and the source electrode of third switch element, the grounded drain of third switch element；And
The source electrode of 4th switch element connects the parallel circuit, grounded drain.
According to the disclosure specific implementation mode, the output voltage of the voltage output end is opened for controlling the master
The break-make of pass.
According to the disclosure specific implementation mode, the output filter circuit includes the first filter capacitor, the second filter
The both ends of wave capacitance and the first filter inductance inductance, first filter capacitor and the second filter capacitor are separately connected output end
Both sides, and the first filter inductance inductance is connected on the side of output end, and it is located at first filter capacitor
And second between filter capacitor.
According to the disclosure specific implementation mode, the output Shaping circuit includes the first shaping diode, second
Shaping diode, the first shaping capacitance and the second shaping capacitance；
The side of one end of the first shaping diode and the series circuit of the first shaping capacitance connection output end, described first
The other end of shaping diode and the series circuit of the first shaping capacitance is grounded；
One end of the second shaping diode and the series circuit of the second shaping capacitance connects the other side of output end, and described the
The other end of two shaping diodes and the series circuit of the second shaping capacitance is grounded.
Description of the drawings
Attached drawing shows the illustrative embodiments of the disclosure, and it is bright together for explaining the principles of this disclosure,
Which includes these attached drawings to provide further understanding of the disclosure, and attached drawing is included in the description and constitutes this
Part of specification.
Fig. 1 is the schematic diagram of power circuit in accordance with one embodiment of the present disclosure.
Fig. 2 is the schematic diagram of voltage conversion circuit in accordance with one embodiment of the present disclosure.
Fig. 3 is output regulating circuitry in accordance with one embodiment of the present disclosure.
Specific implementation mode
The disclosure is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining related content, rather than the restriction to the disclosure.It also should be noted that in order to just
It is illustrated only in description, attached drawing and the relevant part of the disclosure.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the disclosure can phase
Mutually combination.The disclosure is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
According to one aspect of the disclosure, a kind of power circuit is provided, including first switch, second switch, third are opened
Pass, the 4th switch, main switch, comparator, voltage conversion circuit, inductance, the first capacitance, the second capacitance and third capacitance,
One end of one end connection power input of the first switch, the other end connect one end of second switch；
The other end of the other end connection power input of the second switch；
One end of one end connection power input of the third switch, one end of the 4th switch of other end connection；
The other end of the other end connection power input of 4th switch；
The main switch is arranged on one end of the power input, the break-make for controlling the power input；
The comparator is used to compare the input voltage and reference voltage of power input, and comparison signal is exported to the electricity
Press translation circuit；
The voltage conversion circuit is used for the output signal according to the comparator, generates the electricity for being suitable for controlling the main switch
Pressure, to disconnect the control source of the power input when the input voltage is higher than the reference voltage；
Inductance, the first capacitance and the second capacitance form series circuit, and one end of the series circuit is connected to described first
The junction of switch and second switch, the other end of series circuit is as output；And
One end of the third capacitance is connected to the junction of the third switch and the 4th switch, and the other end is as output.
According to the disclosure specific implementation mode, the capacitance of the third capacitance is equal to first capacitance and the
The sum of the capacitance of two capacitances.
According to the disclosure specific implementation mode, the voltage conversion circuit include diode and first resistor and
Connection circuit, one end connection reference voltage of the parallel circuit, other end connecting valve element, parallel circuit and switch element
Junction is as voltage output end, and when the input voltage is higher than the reference voltage, by the control of switch element,
And the voltage of the voltage output end is controlled to scheduled voltage value.
According to the disclosure specific implementation mode, the switch element of the voltage conversion circuit includes four switch members
Part, wherein
The grid of first switching element connects the output of the comparator, grounded drain, and source electrode connects the second switch element
Drain electrode；
The grid of second switch element connects voltage conversion circuit, and source electrode connects reference voltage；
The grid of third switch element is connected to junction and the 4th switch member of first switching element and second switch element
The grid of part and the source electrode of third switch element, the grounded drain of third switch element；And
The source electrode of 4th switch element connects the parallel circuit, grounded drain.
According to the disclosure specific implementation mode, the output voltage of the voltage output end is opened for controlling the master
The break-make of pass.
According to the disclosure specific implementation mode, the output filter circuit includes the first filter capacitor, the second filter
The both ends of wave capacitance and the first filter inductance inductance, first filter capacitor and the second filter capacitor are separately connected output end
Both sides, and the first filter inductance inductance is connected on the side of output end, and it is located at first filter capacitor
And second between filter capacitor.
According to the disclosure specific implementation mode, the output Shaping circuit includes the first shaping diode, second
Shaping diode, the first shaping capacitance and the second shaping capacitance；
The side of one end of the first shaping diode and the series circuit of the first shaping capacitance connection output end, described first
The other end of shaping diode and the series circuit of the first shaping capacitance is grounded；
One end of the second shaping diode and the series circuit of the second shaping capacitance connects the other side of output end, and described the
The other end of two shaping diodes and the series circuit of the second shaping capacitance is grounded.
Explain the specific implementation mode of the disclosure in detail below in conjunction with attached drawing.
The power circuit of the disclosure is shown in FIG. 1.The power circuit includes：First switch 11, second switch 10,
Three switches 12, the 4th switch 13, main switch T1, comparator 21, voltage conversion circuit, inductance L1, the first capacitance C1, the second capacitance
C2 and third capacitance C3.
Wherein first switch to the 4th switch can be the electronic components such as transistor and metal-oxide-semiconductor, for the voltage to input
It is handled, to be exported, dedicated controller may be used, its grid is controlled, to realize gating.In this public affairs
It is having structure in the optional embodiment opened.
One end of one end connection power input Vin of first switch 11, the other end connect one end of second switch 10；
The other end of the other end connection power input Vin of second switch 10；
One end of one end connection power input Vin of third switch 12, the other end connect one end of the 4th switch 13；
The other end of the other end connection power input of 4th switch 13；.
Main switch T1 is arranged on one end of power input Vin, the break-make for controlling power input Vin.Main switch T1 can be with
The form for being transistor may be metal-oxide-semiconductor form.
Comparator 21 is used to compare the input voltage and reference voltage V ref of power input Vin, and comparison signal is defeated
Go out to voltage conversion circuit 22.
Voltage conversion circuit 22 is used for the output signal according to comparator 21, generates the voltage for being suitable for controlling main switch T1,
So as to the control source of the deenergization input when input voltage is higher than reference voltage, to play a protective role.
Inductance L1, the first capacitance C1 and the second capacitance C2 form series circuit, and one end of series circuit is connected to the
The junction of one switch 11 and second switch 10, the other end of series circuit is as output；And
One end of third capacitance C3 is connected to the junction of third switch 12 and the 4th switch 13, and the other end is as output.
According to the disclosure specific implementation mode, the capacitance of third capacitance C3 is equal to the electricity of the first capacitance C1 and second
The sum of the capacitance for holding C2, can reduce the voltage between two connecting lines of output end in this way, therefore not need both threads tool
There is higher voltage endurance capability.
The output of series circuit and third capacitance C3 are connected to the both ends of mutual-inductance element, and interact with mutual-inductance element
Another mutual-inductance element voltage output of the output as power supply.It will be understood by those of skill in the art that can also be by whole
Current circuit etc. handles the voltage output, to obtain desired voltage value.
According to the disclosure specific implementation mode, voltage conversion circuit 22 includes diode 36 and first resistor 37
One end of parallel circuit, parallel circuit connects reference voltage, other end connecting valve element, the company of parallel circuit and switch element
It meets place and is used as voltage output end, and when input voltage is higher than reference voltage, by the control of switch element, and voltage is defeated
The voltage of outlet is controlled to scheduled voltage value.The form of diode can be breakdown diode, carry out protective effect.By opening
The break-make of element is closed to be low and high level by output voltage control, to realize the control of main switch.
According to the disclosure specific implementation mode, the switch element of voltage conversion circuit includes four switch elements,
Wherein,
The output Vs of the grid connection comparator 21 of first switching element 32, grounded drain, source electrode connect second switch element
Drain electrode；
The grid of second switch element 31 connects voltage conversion circuit, and source electrode connects reference voltage；
The grid of third switch element 33 is connected to the junction and the 4th of first switching element 32 and second switch element 31
The grid of switch element 34 and the source electrode of third switch element 33, the grounded drain of third switch element 33；And
The source electrode of 4th switch element 34 connects parallel circuit, grounded drain.
And voltage conversion circuit can also include resistance 35, be series at second switch element 31 and second switch element 31
Between.The break-make of the 4th switch element is realized by controlling first switching element to the conducting of third switch element.
Fig. 3 shows the output regulating circuitry of the output end of the disclosure, including output filter circuit and output Shaping circuit.
Output filter circuit includes the first filter capacitor FC1, the second filter capacitor FC2 and the first filter inductance inductance, the
The both ends of one filter capacitor FC1 and the second filter capacitor FC2 are separately connected the both sides of output end, and the first filter inductance inductance
It is connected on the side of output end, and between the first filter capacitor FC1 and the second filter capacitor FC2.First filter capacitor
FC1, the second filter capacitor FC2 and the first filter inductance inductance remove the radio-frequency component of output voltage.
Output Shaping circuit include the first shaping diode RT1, the second shaping diode RT2, the first shaping capacitance RC1,
And the second shaping capacitance RC2；One end connection output of the series circuit of first shaping diode RT1 and the first shaping capacitance RC1
The other end of the series circuit of the side at end, the first shaping diode RT1 and the first shaping capacitance RC1 is grounded；Second shaping two
The other side of one end connection output end of the series circuit of pole pipe RT2 and the second shaping capacitance RC2, the second shaping diode RT2
It is grounded with the other end of the series circuit of the second shaping capacitance RC2.Output voltage is smoothly located by output Shaping circuit
Reason.
It will be understood by those of skill in the art that the above embodiment is used for the purpose of clearly demonstrating the disclosure, and simultaneously
Non- be defined to the scope of the present disclosure.For those skilled in the art, may be used also on the basis of disclosed above
To make other variations or modification, and these variations or modification are still in the scope of the present disclosure.
Claims (7)
1. a kind of power circuit with output regulatory function, which is characterized in that opened including first switch, second switch, third
Pass, the 4th switch, main switch, comparator, voltage conversion circuit, inductance, the first capacitance, the second capacitance, third capacitance, output filter
Wave circuit and output Shaping circuit,
One end of one end connection power input of the first switch, the other end connect one end of second switch；
The other end of the other end connection power input of the second switch；
One end of one end connection power input of the third switch, one end of the 4th switch of other end connection；
The other end of the other end connection power input of 4th switch；
The main switch is arranged on one end of the power input, the break-make for controlling the power input；
The comparator is used to compare the input voltage and reference voltage of power input, and comparison signal is exported to the electricity
Press translation circuit；
The voltage conversion circuit is used for the output signal according to the comparator, generates the electricity for being suitable for controlling the main switch
Pressure, to disconnect the control source of the power input when the input voltage is higher than the reference voltage；
Inductance, the first capacitance and the second capacitance form series circuit, and one end of the series circuit is connected to described first
The junction of switch and second switch, the other end of series circuit is as output；
One end of the third capacitance is connected to the junction of the third switch and the 4th switch, and the other end is as output；
Output filter circuit is connected to the both sides of output end, for being filtered to output voltage；And
Output Shaping circuit is connected to the both sides of output end, for carrying out shaping to output voltage.
2. power circuit as described in claim 1, which is characterized in that the capacitance of the third capacitance is equal to first electricity
Hold the sum of the capacitance with the second capacitance.
3. power circuit as claimed in claim 1 or 2, which is characterized in that the voltage conversion circuit includes diode and
The parallel circuit of one resistance, one end of the parallel circuit connect reference voltage, other end connecting valve element, parallel circuit and
The junction of switch element passes through switch as voltage output end, and when the input voltage is higher than the reference voltage
The control of element, and the voltage of the voltage output end is controlled to scheduled voltage value.
4. power circuit as claimed in claim 3, which is characterized in that the switch element of the voltage conversion circuit includes four
Switch element, wherein
The grid of first switching element connects the output of the comparator, grounded drain, and source electrode connects the second switch element
Drain electrode；
The grid of second switch element connects voltage conversion circuit, and source electrode connects reference voltage；
The grid of third switch element is connected to junction and the 4th switch member of first switching element and second switch element
The grid of part and the source electrode of third switch element, the grounded drain of third switch element；And
The source electrode of 4th switch element connects the parallel circuit, grounded drain.
5. power circuit according to any one of claims 1 to 4, which is characterized in that the output electricity of the voltage output end
Press the break-make for controlling the main switch.
6. power circuit as described in claim 1, which is characterized in that the output filter circuit include the first filter capacitor,
The both ends of second filter capacitor and the first filter inductance inductance, first filter capacitor and the second filter capacitor are separately connected defeated
The both sides of outlet, and the first filter inductance inductance is connected on the side of output end, and filtered positioned at described first
Between wave capacitance and the second filter capacitor.
7. power circuit as claimed in claim 6, which is characterized in that the output Shaping circuit includes two pole of the first shaping
Pipe, the second shaping diode, the first shaping capacitance and the second shaping capacitance；
The side of one end of the first shaping diode and the series circuit of the first shaping capacitance connection output end, described first
The other end of shaping diode and the series circuit of the first shaping capacitance is grounded；
One end of the second shaping diode and the series circuit of the second shaping capacitance connects the other side of output end, and described the
The other end of two shaping diodes and the series circuit of the second shaping capacitance is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245139.0A CN108494257A (en) | 2018-03-23 | 2018-03-23 | Power circuit with output regulatory function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245139.0A CN108494257A (en) | 2018-03-23 | 2018-03-23 | Power circuit with output regulatory function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108494257A true CN108494257A (en) | 2018-09-04 |
Family
ID=63319685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810245139.0A Pending CN108494257A (en) | 2018-03-23 | 2018-03-23 | Power circuit with output regulatory function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108494257A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810000A (en) * | 2002-08-29 | 2006-07-26 | 皇家飞利浦电子股份有限公司 | Current mode signalling in electronic data processing circuit |
| CN101630913A (en) * | 2009-08-14 | 2010-01-20 | 艾默生网络能源有限公司 | Resonant converter |
| US20100289421A1 (en) * | 2009-05-12 | 2010-11-18 | Osram Sylvania Inc. | Starting an electronic ballast |
| CN104124663A (en) * | 2013-04-29 | 2014-10-29 | 鸿富锦精密电子(天津)有限公司 | Voltage protection circuit |
-
2018
- 2018-03-23 CN CN201810245139.0A patent/CN108494257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810000A (en) * | 2002-08-29 | 2006-07-26 | 皇家飞利浦电子股份有限公司 | Current mode signalling in electronic data processing circuit |
| US20100289421A1 (en) * | 2009-05-12 | 2010-11-18 | Osram Sylvania Inc. | Starting an electronic ballast |
| CN101630913A (en) * | 2009-08-14 | 2010-01-20 | 艾默生网络能源有限公司 | Resonant converter |
| CN104124663A (en) * | 2013-04-29 | 2014-10-29 | 鸿富锦精密电子(天津)有限公司 | Voltage protection circuit |
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