CN106787640A - Switching Power Supply power circuit with double frequency function - Google Patents
Switching Power Supply power circuit with double frequency function Download PDFInfo
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- CN106787640A CN106787640A CN201611221903.8A CN201611221903A CN106787640A CN 106787640 A CN106787640 A CN 106787640A CN 201611221903 A CN201611221903 A CN 201611221903A CN 106787640 A CN106787640 A CN 106787640A
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- switching power
- power tube
- sequential
- conducting
- output
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The present invention discloses a kind of Switching Power Supply power circuit with double frequency function, including power supply, output loading, the switching power tube Q of full-bridge circuit1、Q2、Q3And Q4；Wherein, a drive waveforms cycle of each pipe is divided into four sequential, sets Q1、Q2、Q3、Q4Conducting sequential, it is specific as follows：In the first sequential, Q2、Q1Conducting, now no electric current flows through output loading, and output is zero, is shut-off sequential；In the second sequential, Q1、Q4Conducting, now has electric current forward direction to flow through output loading, exports positive half cycle waveform；In the 3rd sequential, Q4、Q3Conducting, now no electric current flows through output loading, and output is zero, is shut-off sequential；In the 4th sequential, Q3、Q2Conducting, now has electric current to flow counterflow through output loading, exports negative half period waveform.That is Q1、Q2、Q3、Q4A drive cycle, the present invention only common full bridge switching circuit can be made to go out two power cycles by changing the conducting sequential of each switching power tube, just, show frequency doubling property.
Description
Technical field
The present invention relates to a kind of conversion without any additional element only drive waveforms, then the switch with double frequency function is electric
Source power circuit, belongs to electronic technology field.
Background technology
As the common knowledge of electron trade, the price of the switching power tube of general switching power circuit and frequency characteristic into
Direct ratio, frequency characteristic then price more high is higher, therefore frequency response is up to how many, and power circuit just can only be how many in highest
Operation at frequencies, overclocking work then opens pipe and ends not in place, so that the caloric value of pipe increases, circuit can not be just
Often work.
In full-bridge power switch circuit, the conducting sequential of switching power tube is usually：In the first sequence switch power tube Q1、
Q4The positive circulation output loading of then electric current is simultaneously turned on, the positive half-wave of waveform is output as；Second sequence switch power tube Q1、Q4Together
When turn off, be shut-off sequential；3rd sequence switch power tube Q2、Q3Then electric current reverse circulated output loading is simultaneously turned on, is output as
The negative half-wave of waveform；4th sequence switch power tube Q2、Q3Simultaneously turn off, be shut-off sequential；This four sequential constantly circulate product
It is raw, it is exactly the normal work of the circuit, here, the driving frequency of circuit is how many, the power-frequency of output is exactly how many.
The content of the invention
For some shortcomings that prior art is present, the invention provides a kind of Switching Power Supply power with double frequency function
Circuit.Conducting sequential by changing each switching power tube in usual full-bridge power switch circuit of the invention, makes each switch work(
Rate pipe normal work under highest frequency and driving frequency, but the power-frequency of circuit output is then the double of driving frequency, no
Added and replacing component with another, only can just show frequency doubling property with circuit.
The technical solution adopted by the present invention is as follows：
A kind of Switching Power Supply power circuit with double frequency function, including power supply, output loading, switching power tube Q1, switch work(
Rate pipe Q2, switching power tube Q3With switching power tube Q4；Described switching power tube Q1With switching power tube Q3Series connection；Described opens
Close power tube Q2With switching power tube Q4Series connection；Described switching power tube Q1, switching power tube Q2A termination power just
End, described switching power tube Q3, switching power tube Q4A termination power negative terminal；One end of described output loading is connected on
Switching power tube Q1With switching power tube Q3Connecting line on, it is another to terminate at switching power tube Q2With switching power tube Q4Company
In wiring；Wherein, switching power tube Q1, switching power tube Q2, switching power tube Q3, switching power tube Q4It is respective one conducting
The shut-off cycle is divided into four sequential, so as to be made up of two output waveforms in output loading circuit, is described in detail below：
In the first sequential, maintained switch power tube Q2Conducting, and by switching power tube Q1Conducting, switching power tube Q3、Q4Shut-off,
Now no electric current flows through output loading, is output as turning off sequential；
In the second sequential, maintained switch power tube Q1Conducting, by switching power tube Q4Conducting, switching power tube Q2、Q3Shut-off, this
When there is electric current forward direction to flow through output loading, export positive half cycle waveform；
In the 3rd sequential, maintained switch power tube Q4Conducting, by switching power tube Q3Conducting, switching power tube Q1、Q2Shut-off, this
When there is no electric current to flow through output loading, be output as turn off sequential；
In the 4th sequential, maintained switch power tube Q3Conducting, by switching power tube Q2Conducting, switching power tube Q1、Q4Shut-off, this
When there is electric current to flow counterflow through output loading, export negative half period waveform；
An output waveform cycle is completed, above-mentioned switching power tube Q is repeated1, switching power tube Q2, switching power tube Q3, switch work(
Rate pipe Q4Conducting shut-off sequential, carry out next output waveform cycle.
Advantages of the present invention：
Conducting sequential by changing each switching power tube in usual full-bridge power switch circuit of the invention, makes each switch power
Pipe normal work under highest frequency and driving frequency, but the power-frequency of circuit output is then the double of driving frequency, without
It is another to add and change component, only can just show frequency doubling property with circuit；For example IGBT limiting frequency 30KHZ situation
Under, the power-frequency of the exportable 60KHZ of circuit, output frequency is 2 times of pipe driving frequency, has reached a times yupin effect.
Brief description of the drawings
Fig. 1 is full-bridge power switch circuit diagram of the invention.
Fig. 2 is drive waveforms frequency multiplication schematic diagram of the invention.
Fig. 3 is specific embodiment circuit diagram of the invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples, but following embodiments are only real typical case of the invention
Example is applied, is not intended to limit the invention, all any modifications made within the spirit and principles in the present invention, equivalent and changed
Enter, should be included within the scope of the present invention.
Embodiment：
As shown in figure 3, a kind of Switching Power Supply power circuit with double frequency function includes following component：L1 is output loading,
R1, R2, R7, R8 are signal current-limiting resistance, and R3, R4, R9, R10 are grid current-limiting resistance, and R5, R6, R11, R12 release for grid
Resistance, C5 is power power-supply filter capacitor, and C1, C2, C6, C7 are de-noising filter capacitor, and C3, C4, C8, C9 are filtered for driving power supply
Electric capacity, D1, D2 are bootstrap diode, and QQ1, QQ2, QQ3, QQ4 are switching power tube, and U1, U2, U3, U4 are optocoupler, are transmission arteries and veins
Punching and electrical isolation are used, and U5 is control circuit, can be constituted for single-chip microcomputer or application-specific integrated circuit or logic circuit.Each component is according to figure
3 annexation links together.
By the conducting sequential of U5 configuration switch power tubes QQ1, QQ2, QQ3, QQ4, specially：In the first sequential, QQ1,
QQ2 is turned on, and QQ3, QQ4 disconnect, and now no electric current flows through output loading, and output is zero, is the shut-off cycle；In the second sequential,
QQ1, QQ4 are turned on, and QQ2, QQ3 disconnect, and now have electric current forward direction to flow through output loading, export positive half cycle waveform；In the 3rd sequential,
QQ4, QQ3 are turned on, and QQ1, QQ2 disconnect, and now no electric current flows through output loading, and output is zero, are the shut-off cycle；At the 4th
Sequence, QQ2, QQ3 conducting, QQ1, QQ4 disconnect, and now have electric current to flow counterflow through output loading, export negative half period waveform；Obtain as schemed
2 waveforms, knowable to output waveform, have so reached the effect of circuit frequency multiplication.
Claims (1)
1. a kind of Switching Power Supply power circuit with double frequency function, including power supply, output loading, the switch power of full-bridge circuit
Pipe Q1, switching power tube Q2, switching power tube Q3With switching power tube Q4；Described switching power tube Q1With switching power tube Q3String
Connection；Described switching power tube Q2With switching power tube Q4Series connection；Described switching power tube Q1, switching power tube Q2One end
Connect the anode of power supply, described switching power tube Q3, switching power tube Q4A termination power negative terminal；Described output loading
An end be connected on switching power tube Q1With switching power tube Q3Connecting line on, it is another to terminate at switching power tube Q2With switch work(
Rate pipe Q4Connecting line on；It is characterized in that：Switching power tube Q1, switching power tube Q2, switching power tube Q3, switching power tube Q4
A respective conducting shut-off cycle be divided into four sequential, so as to being made up of two output waveforms in output loading circuit, have
Body is described as follows：
In the first sequential, maintained switch power tube Q2Conducting, and by switching power tube Q1Conducting, switching power tube Q3、Q4Shut-off, this
When there is no electric current to flow through output loading, be output as turn off sequential；
In the second sequential, maintained switch power tube Q1Conducting, by switching power tube Q4Conducting, switching power tube Q2、Q3Shut-off, now
There is electric current forward direction to flow through output loading, export positive half cycle waveform；
In the 3rd sequential, maintained switch power tube Q4Conducting, by switching power tube Q3Conducting, switching power tube Q1、Q2Shut-off, now
There is no electric current to flow through output loading, be output as turning off sequential；
In the 4th sequential, maintained switch power tube Q3Conducting, by switching power tube Q2Conducting, switching power tube Q1、Q4Shut-off, now
There is electric current to flow counterflow through output loading, export negative half period waveform；
An output waveform cycle is completed, above-mentioned switching power tube Q is repeated1, switching power tube Q2, switching power tube Q3, switch work(
Rate pipe Q4Conducting shut-off sequential, carry out next output waveform cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221903.8A CN106787640A (en) | 2016-12-27 | 2016-12-27 | Switching Power Supply power circuit with double frequency function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221903.8A CN106787640A (en) | 2016-12-27 | 2016-12-27 | Switching Power Supply power circuit with double frequency function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106787640A true CN106787640A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611221903.8A Pending CN106787640A (en) | 2016-12-27 | 2016-12-27 | Switching Power Supply power circuit with double frequency function |
Country Status (1)
| Country | Link |
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| CN (1) | CN106787640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371294A (en) * | 2020-04-03 | 2020-07-03 | 宁波安信数控技术有限公司 | Frequency spectrum shifting MOS drive circuit and method based on digital banner technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090028300A (en) * | 2007-09-14 | 2009-03-18 | 엘에스산전 주식회사 | Voltage modulation apparatus for 3 phase full-bridge inverter and voltage modulation method thereof |
| CN103904901A (en) * | 2014-03-28 | 2014-07-02 | 成都芯通科技股份有限公司 | Phase-shift full-bridge converter circuit and control method |
-
2016
- 2016-12-27 CN CN201611221903.8A patent/CN106787640A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090028300A (en) * | 2007-09-14 | 2009-03-18 | 엘에스산전 주식회사 | Voltage modulation apparatus for 3 phase full-bridge inverter and voltage modulation method thereof |
| CN103904901A (en) * | 2014-03-28 | 2014-07-02 | 成都芯通科技股份有限公司 | Phase-shift full-bridge converter circuit and control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371294A (en) * | 2020-04-03 | 2020-07-03 | 宁波安信数控技术有限公司 | Frequency spectrum shifting MOS drive circuit and method based on digital banner technology |
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Application publication date: 20170531 |
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