CN108322067A - A kind of Switching Power Supply - Google Patents
A kind of Switching Power Supply Download PDFInfo
- Publication number
- CN108322067A CN108322067A CN201711488489.1A CN201711488489A CN108322067A CN 108322067 A CN108322067 A CN 108322067A CN 201711488489 A CN201711488489 A CN 201711488489A CN 108322067 A CN108322067 A CN 108322067A
- Authority
- CN
- China
- Prior art keywords
- pwm
- pwm chip
- switching tube
- power supply
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of Switching Power Supplies, including fairing, switching tube, filter, driving device and PWM generator, the output end of PWM generator is connected through driving device with switching tube, the fairing is connected through switching tube with filter, become DC voltage after the rectified device rectification of input voltage of switching tube, PWM generator output pwm signal, through being turned on and off for driving device driving switch pipe, switching tube exports square wave, and stable output voltage is obtained after filtered device filtering.The present invention adjusts the size and frequency of output voltage by pwm chip, can improve the transfer efficiency of translation circuit, adjusts output voltage, meets the needs of load, ensures that Switching Power Supply is powered with security and stability, improves the efficiency and service life of Switching Power Supply.
Description
Technical field
The present invention relates to field of electrical equipment more particularly to a kind of Switching Power Supplies.
Background technology
With economy and the reach of science,.World energy sources are gradually in short supply, and small, the efficient Switching Power Supply of energy consumption is each
Each industry of row all plays an important role.In Switching Power Supply, translation circuit plays main adjusting pressure stabilization function, traditional frequency
In rate control mode, the working frequency of power switch tube is variation, to cause the design of follow-up filter circuit more complex, is increased
Add the cost of Switching Power Supply, and the transfer efficiency of translation circuit is not high, influences the efficiency and service life of Switching Power Supply.
Invention content
The purpose of the present invention is to provide a kind of Switching Power Supplies, can improve the transfer efficiency of translation circuit, improve switch
The efficiency and service life of power supply.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of Switching Power Supply, including fairing, switching tube, filter, driving device and PWM generator, PWM generator
Output end is connected through driving device with switching tube, and the fairing is connected through switching tube with filter, the input of switching tube
Become DC voltage, PWM generator output pwm signal, through driving device driving switch pipe after the rectified device rectification of voltage
It is turned on and off, switching tube exports square wave, and stable output voltage is obtained after filtered device filtering.
Preferably, the PWM generator uses pwm chip, the oscillator timing capacitor incoming end of pwm chip
Through the first capacity earth, oscillation of the oscillator timing capacitor incoming end through first resistor and pwm chip of pwm chip
Device discharge end is connected, and the oscillator timing resistor incoming end of pwm chip is grounded through second resistance and the first potentiometer successively,
The noninverting input of pwm chip is connected with the sliding end of the second potentiometer, and one end of the second potentiometer connects through 3rd resistor
The first power supply is connect, for the other end of the second potentiometer through the 4th resistance eutral grounding, the 4th resistance both ends are parallel with the second capacitance, PWM controls
First driving signal output end of coremaking piece is connected through the first diode with the ground level of the first triode, and the of pwm chip
Two driving signal output end is connected through the second diode with the ground level of the first triode, the grounded collector of the first triode, the
The emitting stage of one triode is successively through the 5th resistance and the 6th resistance eutral grounding, emitter and the driving device phase of the first triode
Even.
Preferably, the pwm chip integrates pwm chip using SG3525 series.
The present invention adjusts the size and frequency of output voltage by pwm chip, can improve the conversion of translation circuit
Efficiency, the first potentiometer can change the signal frequency of pwm chip, and the second potentiometer can change pwm chip
Signal width, the size of current by adjusting Setting signal can adjust the width of output voltage, full to adjust output voltage
The demand loaded enough ensures that Switching Power Supply is powered with security and stability, improves the efficiency and service life of Switching Power Supply.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of PWM generator of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described embodiment
Only section Example of the invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Other all embodiments that art personnel are obtained without making creative work belong to the protection model of the present invention
It encloses.
As shown in Fig. 1 grades Fig. 2, a kind of Switching Power Supply of the present invention, including fairing, switching tube, filter,
The output end of driving device and PWM generator, PWM generator is connected through driving device with switching tube, and the fairing is through opening
It closes pipe with filter to be connected, becomes DC voltage, PWM generator output after the rectified device rectification of input voltage of switching tube
Pwm signal, through being turned on and off for driving device driving switch pipe, switching tube exports square wave, is obtained after filtered device filtering
Stable output voltage.
PWM generator uses pwm chip IC1, and in the present embodiment, pwm chip IC1 is using SG3525 series
Integrated pwm chip, 5 pins of pwm chip IC1（Oscillator timing capacitor incoming end）It is grounded through the first capacitance C1,
5 pins of pwm chip IC1（Oscillator timing capacitor incoming end）Draw through first resistor R1 and the 7 of pwm chip IC1
Foot（Oscillator discharge end）It is connected, 6 pins of pwm chip IC1（Oscillator timing resistor incoming end）Successively through the second electricity
Hinder R2 and the first potentiometer RP1 ground connection, 2 pins of pwm chip IC1（Noninverting input）With the cunning of the second potentiometer RP2
Moved end is connected, and through 3rd resistor R3 the first power supply of connection VCC1, the second potentiometer RP2's is another for one end of the second potentiometer RP2
Through the 4th resistance R4 ground connection, the 4th both ends resistance R4 are parallel with the second capacitance C2,11 pins of pwm chip IC1 at end（First
Driving signal output end）It is connected with the base stage of the first triode VT1 through the first diode D1,14 pins of pwm chip IC1
（Second driving signal output end）It is connected with the base stage of the first triode VT1 through the second diode D2, the collection of the first triode VT1
Electrode is grounded, and the emitting stage of the first triode VT1 is successively through the 5th resistance R5 and the 6th resistance R6 ground connection, the first triode VT1
Emitter be connected with driving device.
First potentiometer can change the signal frequency of pwm chip IC1, the frequency of oscillation of pwm chip IC1 by
The voltage value of 5 pins, 6 pins and 7 pins determines that 7 pins give the first capacitor charging, then adjust 6 pins electricity through the first potentiometer
The size of stream finally adjusts the output voltage of 11 pins and 14 pins of pwm chip IC1；Second potentiometer can change
The signal width of pwm chip IC1, the size of current by adjusting Setting signal can adjust the width of output voltage, from
And adjust output voltage.
The present invention can improve the transfer efficiency of translation circuit, improve the efficiency and service life of Switching Power Supply.
Claims (3)
1. a kind of Switching Power Supply, it is characterised in that：Occur including fairing, switching tube, filter, driving device and PWM
The output end of device, PWM generator is connected through driving device with switching tube, and the fairing is through switching tube and filter phase
Even, become DC voltage after the rectified device rectification of input voltage of switching tube, PWM generator output pwm signal is filled through driving
Being turned on and off for driving switch pipe is set, switching tube exports square wave, stable output voltage is obtained after filtered device filtering.
2. a kind of Switching Power Supply as described in claim 1, it is characterised in that：The PWM generator uses pwm chip,
The oscillator timing capacitor incoming end of pwm chip connects through the first capacity earth, the oscillator timing capacitor of pwm chip
Enter end through first resistor to be connected with the oscillator discharge end of pwm chip, the oscillator timing resistor access of pwm chip
End is grounded through second resistance and the first potentiometer successively, the sliding end of the noninverting input of pwm chip and the second potentiometer
Be connected, one end of the second potentiometer connects the first power supply through 3rd resistor, the other end of the second potentiometer through the 4th resistance eutral grounding,
4th resistance both ends are parallel with the second capacitance, and the first driving signal output end of pwm chip is through the first diode and first
The ground level of triode is connected, base of second driving signal output end through the second diode and the first triode of pwm chip
Grade is connected, the grounded collector of the first triode, the emitting stage of the first triode successively through the 5th resistance and the 6th resistance eutral grounding,
The emitter of first triode is connected with driving device.
3. a kind of Switching Power Supply as claimed in claim 2, it is characterised in that：The pwm chip is using SG3525 series
Integrated pwm chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488489.1A CN108322067A (en) | 2017-12-29 | 2017-12-29 | A kind of Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488489.1A CN108322067A (en) | 2017-12-29 | 2017-12-29 | A kind of Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108322067A true CN108322067A (en) | 2018-07-24 |
Family
ID=62892970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711488489.1A Withdrawn CN108322067A (en) | 2017-12-29 | 2017-12-29 | A kind of Switching Power Supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108322067A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902126A (en) * | 2009-05-25 | 2010-12-01 | 同方威视技术股份有限公司 | Power supply device for sputter ion pumps |
| CN206283424U (en) * | 2016-09-12 | 2017-06-27 | 哈尔滨理工大学 | A kind of Novel DC voltage source |
| CN106921303A (en) * | 2017-03-13 | 2017-07-04 | 成都秉德科技有限公司 | A kind of switching mode power supply transformer |
-
2017
- 2017-12-29 CN CN201711488489.1A patent/CN108322067A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902126A (en) * | 2009-05-25 | 2010-12-01 | 同方威视技术股份有限公司 | Power supply device for sputter ion pumps |
| CN206283424U (en) * | 2016-09-12 | 2017-06-27 | 哈尔滨理工大学 | A kind of Novel DC voltage source |
| CN106921303A (en) * | 2017-03-13 | 2017-07-04 | 成都秉德科技有限公司 | A kind of switching mode power supply transformer |
Non-Patent Citations (2)
| Title |
|---|
| 殷明: "太阳能-市电互补LED路灯控制系统的设计", 《机电技术》 * |
| 第3期: "小功率开关稳压电源", 《黑龙江八一农垦大学学报》 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180724 |
|
| WW01 | Invention patent application withdrawn after publication |