CN107124111A - A kind of novel high-power semibridge system exports rearrangeable switch power supply - Google Patents
A kind of novel high-power semibridge system exports rearrangeable switch power supply Download PDFInfo
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- CN107124111A CN107124111A CN201710471739.4A CN201710471739A CN107124111A CN 107124111 A CN107124111 A CN 107124111A CN 201710471739 A CN201710471739 A CN 201710471739A CN 107124111 A CN107124111 A CN 107124111A
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- 238000002955 isolation Methods 0.000 claims abstract description 22
- 230000033228 biological regulation Effects 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001012 protector 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
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Rearrangeable switch power supply is exported the invention discloses a kind of novel high-power semibridge system; including AC D/C powers circuit, semi-bridge switching voltage regulator main circuit, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature, AC D/C powers circuit, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature are electrically connected with semi-bridge switching voltage regulator main circuit respectively；AC D/C powers circuit is using isolation flyback power supply, the DC voltage for providing ± 12V for semi-bridge switching voltage regulator main circuit；Semi-bridge switching voltage regulator circuit is used for the conversion for completing main power power-supply AC DC；Output pressure regulation current-limiting circuit is used for the output current/output voltage for adjusting semi-bridge switching voltage regulator main circuit；Overtension and the too high protection circuit of temperature are used for the shut-off Switching Power Supply in overtension or too high temperature and carry out protection switch power supply.The output voltage and output current continuously linear for the Switching Power Supply that the present invention is provided are adjustable, and efficiency high.
Description
Technical field
The present invention relates to Switching Power Supply, more particularly to a kind of novel high-power semibridge system output rearrangeable switch power supply.
Background technology
With the development of electronic technology, status of the electronic equipment in the life and production of people is also more and more important, is permitted
Many electronic equipments it is also proposed higher requirement to required power supply.And considerable electronic equipment can not directly make among these
The AC power provided with power network, but galvanic current source is needed, therefore the performance, volume, weight to dc source etc.
Requirement also improve constantly, traditional high power switching power supply, due to being fixed output, even if adjustable is also fine setting, it is difficult to suitable
Answer the requirement of modern electronic product.
The content of the invention
The defect existed for prior art, the present invention proposes a kind of novel high-power semibridge system output rearrangeable switch electricity
Source, its output voltage and output current continuously linear are adjustable, and efficiency high.
The technical solution adopted by the present invention is：
A kind of novel high-power semibridge system exports rearrangeable switch power supply, including AC-DC power circuits, semi-bridge switching voltage regulator
Main circuit, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature, the AC-DC power circuits, output are adjusted
Pressure current-limiting circuit and overtension and the too high protection circuit of temperature are electrically connected with the semi-bridge switching voltage regulator main circuit respectively；Institute
AC-DC power circuits are stated using isolation flyback power supply, for providing the straight of ± 12V for the semi-bridge switching voltage regulator main circuit
Flow voltage；The semi-bridge switching voltage regulator circuit is used for the conversion for completing main power power-supply AC-DC；The output pressure regulation current limliting electricity
Road is used for the output current or output voltage for adjusting the semi-bridge switching voltage regulator main circuit；The overtension and temperature are too high
Protection circuit is used to turn off Switching Power Supply in overtension or too high temperature to protect the semi-bridge switching voltage regulator main circuit.
Opened preferably, the semi-bridge switching voltage regulator main circuit includes TL494 chips, isolation drive transformer, semibridge system
Powered-down source high voltage input terminal basic circuit, high-frequency high-power transformer, the second N-channel MOS pipe and current sampling resistor, it is described
TL494 chips are electrically connected by bi-pulse width modulation circuit and H-bridge circuit with the isolation drive transformer, and the isolation is driven
Dynamic transformer is by driving metal-oxide-semiconductor to be electrically connected with the semi-bridge switching voltage regulator high voltage input terminal basic circuit and by driving
Metal-oxide-semiconductor drives the high-frequency high-power transformer, and the secondary coil of the high-frequency high-power transformer passes through fast recovery diode
Electrically connected with the 2nd N drain electrodes for linking up metal-oxide-semiconductor, the source electrode of the second N-channel MOS pipe connects the current sampling resistor
To output plus terminal of whole power supply, the grid connection output pressure regulation current-limiting circuit of the second N-channel MOS pipe.
Preferably, the common port of the 13-15 pin of the TL494 chips connects the 22nd resistance to the 2 of the TL494 chips
Pin, 2 pin of the TL494 chips connect the 30th resistance to output plus terminal of whole power supply, and 1 pin of the TL494 chips connects
The negative electrode of the 15th voltage-regulator diode is connect, the anode of the 15th voltage-regulator diode connects output plus terminal of whole power supply, the TL494
1 pin of chip is sequentially connected the drain electrode of the 24th resistance, the 23rd resistance and the second N-channel MOS pipe, the 31st resistance and the 15th voltage stabilizing two
Pole pipe is connected in parallel, and the 23rd electric capacity is connected with the 23rd resistor coupled in parallel.
Preferably, the output pressure regulation current-limiting circuit includes voltage-regulation potentiometer, the first discharge circuit, four high guaily unit electricity
Road and the 3rd discharge circuit, when the voltage-regulation potentiometer gives the first discharge circuit negative pressure signal, first amplifier
Circuit passing ratio integrating circuit controls the conducting of the second N-channel MOS pipe so that the output voltage increase of whole power supply；
When the voltage-regulation potentiometer gives the four high guaily unit circuit malleation signal, the four high guaily unit circuit passing ratio integration electricity
Road controls the disconnection of the second N-channel MOS pipe, to reach the effect of current limliting or constant current；The 3rd discharge circuit difference
It is connected with the four high guaily unit circuit and the voltage-regulation potentiometer, the 3rd discharge circuit is used to connect LED to show
Whole power supply is in pressure constant state/constant current state.
Preferably, the semi-bridge switching voltage regulator high voltage input terminal basic circuit includes the first rectifier bridge, the isolation is driven
6 pin of the secondary coil of dynamic transformer connect the grid of the first N-channel MOS pipe, the secondary coil of the isolation drive transformer
7 pin connect the grid of the 3rd N-channel MOS pipe, the source ground of the 3rd N-channel MOS pipe, the drain electrode of the 3rd N-channel MOS pipe point
The source electrode of the first N-channel MOS pipe, the 1-2 pin of the primary coil of the high-frequency high-power transformer and the isolation is not connected to drive
5 pin of the secondary coil of dynamic transformer, the output voltage anode of drain electrode connection first rectifier bridge of the first N-channel MOS pipe,
The output voltage negativing ending grounding of first rectifier bridge.
Preferably, one end of the 5th electric capacity connect respectively the round edge coil of the high-frequency high-power transformer 3-4 pin and
One end of 12nd electric capacity, the 5th is connected one end of the first electric capacity and one end of the second electric capacity, the 12nd with the other end of electric capacity respectively
The other end of electric capacity connects the 13rd resistance to the 1-2 pin of the primary coil of the high-frequency high-power transformer, first electric capacity
The other end connect the output voltage anode of first rectifier bridge, the other end of second electric capacity connects first rectification
The output voltage negative terminal of bridge, and the capacitance of the first electric capacity is equal with the capacitance of the second electric capacity.
Preferably, 3rd resistor is connected in parallel with the first electric capacity, the 4th resistance is connected in parallel with the second electric capacity, and the 3rd
The resistance of resistance is equal with the resistance of the 4th resistance.
Preferably, the overtension and the too high protection circuit of temperature include temperature sensor and the second discharge circuit, institute
4 pin of temperature sensor and second discharge circuit respectively with the TL494 chips are stated to be connected；Second discharge circuit is used
Make comparisons device, when the output voltage is too high, then 4 pin for triggering the TL494 chips are turned off；It is described when temperature is too high
Temperature sensor is turned on so that 4 pin of the TL494 chips are high level, and then turn off Switching Power Supply.
Preferably, the AC-DC power circuits include the second rectifier bridge, DK112 chips, the second transformer and optical coupling
Device, alternating current 220V civil power input, after second rectifier bridge, obtains direct current non-isolated voltage, passes through the DK112 chips
The unlatching for the MOSFET being internally integrated, makes the continuous energy storage of primary coil of second transformer, when in the DK112 chips
After the MOSFET shut-offs in portion, the energy of storage is discharged by the secondary coil of transformer, so it is anti-by the photo-coupler
3 pin of the DK112 chips are fed to, the DK112 chips square wave pulse width is constantly adjusted so that the voltage of secondary coil is by whole
﹢ 12V DC voltages are obtained after stream diode rectification, another circle coil of secondary coil is in control ﹣ 12V voltages by 12V voltage stabilizings.
Compared with prior art, advantageous effects of the invention are：
Output voltage 0-60V is adjustable, and output current 0-5a is adjustable, and efficiency is higher than 60%；
Export CC/CV constant pressure and flows to automatically switch, the regulation of voltage x current value continuously linear；
Can short circuit for a long time with overvoltage protection, overcurrent protection, overheat protector, overload protection function and working condition.
Certainly, any product for implementing the present invention it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
Fig. 1 is system design block diagram of the invention；
Fig. 2 is AC-DC power circuits of the invention；
Fig. 3 is semi-bridge switching voltage regulator main circuit of the invention；
Fig. 4 is output pressure regulation current-limiting circuit of the invention；
Fig. 5 is overtension and the too high protection circuit of temperature of the invention；
Fig. 6 exports the circuit diagram of rearrangeable switch power supply for a kind of novel high-power semibridge system of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.
Integrate referring to Fig. 1-6, a kind of novel high-power semibridge system output rearrangeable switch power supply, including AC-DC power circuits,
Semi-bridge switching voltage regulator main circuit, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature, AC-DC power supplys electricity
Road, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature are electrically connected with semi-bridge switching voltage regulator main circuit respectively
Connect；AC-DC power circuits are using isolation flyback power supply, the direct current for providing ± 12V for semi-bridge switching voltage regulator main circuit
Voltage；Semi-bridge switching voltage regulator circuit is used for the conversion for completing main power power-supply AC-DC；Output pressure regulation current-limiting circuit is used to adjust
The output current or output voltage of semi-bridge switching voltage regulator main circuit；Overtension and the too high protection circuit of temperature are used in voltage
Switching Power Supply is turned off during too high or too high temperature to protect semi-bridge switching voltage regulator main circuit.
Referring to Fig. 2, AC-DC power circuits include second rectifier bridge BD2, DK112 chip, the second transformer T2 and optical coupling
Device U2, alternating current 220V civil power input, after the second rectifier bridge BD2, obtains the direct current non-isolated voltage close to 300V, passes through
The integrated MOSFET of DK112 chip internals unlatching, makes the second transformer T2 continuous energy storage of primary coil, when DK112 cores
After MOSFET shut-offs inside piece, the energy of storage is discharged by transformer T2 secondary coil, with the 10th voltage-regulator diode
D10 and the additional 18th resistance R18 of optocoupler input are connected in series through opto-coupled feedback to 3 pin of DK112 chips, constantly adjust DK112
Chip square wave pulse width so that the voltage of secondary coil obtains ﹢ 12V or so DC voltage, secondary after rectifies
Another circle coil of coil obtains ﹣ 12V voltages by 12V voltage-stabiliser tubes D17.
Referring to Fig. 1,3 and 6, semi-bridge switching voltage regulator main circuit includes TL494 chips, isolation drive transformer T1, half-bridge
Formula Switching Power Supply high voltage input terminal basic circuit, high-frequency high-power transformer T3, the second N-channel MOS pipe Q2 and current sample electricity
RJ1 is hindered, TL494 chips are electrically connected by bi-pulse width modulation circuit and H-bridge circuit with isolation drive transformer T1, isolation is driven
Dynamic transformer T1 is by driving metal-oxide-semiconductor (the first N-channel MOS pipe Q1 and the 3rd N-channel MOS pipe Q3) high with semi-bridge switching voltage regulator
Pressure input basic circuit is electrically connected and by driving metal-oxide-semiconductor to drive high-frequency high-power transformer T3, high-frequency high-power transformer
T3 secondary coil links up metal-oxide-semiconductor Q2 by fast recovery diode D1 (quantity is two, model STTH1602C) with the 2nd N
Drain electrode G electrical connections, the second N-channel MOS pipe Q2 source electrode connects current sampling resistor to output plus terminal of whole power supply, the
Two N-channel MOS pipe Q2 grid D connections output pressure regulation current-limiting circuit.
The common port of the 13-15 pin of TL494 chips connects the 22nd resistance R22 to 2 pin of TL494 chips, TL494 chips
1 pin that 2 pin connect output plus terminal GNDI, the TL494 chip of the 30th resistance R30 to whole power supply connects the 15th voltage-regulator diode
D15 negative electrode, the 15th voltage-regulator diode D15 anode connects 1 pin of output plus terminal GNDI, the TL494 chip of whole power supply
The 24th resistance R24, the 23rd resistance R23 and the second N-channel MOS pipe Q2 drain electrode G are sequentially connected, the 31st resistance R31 and the 15th is steady
Pressure diode D15 is connected in parallel, and the 23rd electric capacity C23 and the 23rd resistance R23 is connected in parallel.
Semi-bridge switching voltage regulator high voltage input terminal basic circuit includes the first rectifier bridge BD1, isolation drive transformer T1's
6 pin of secondary coil connect the first N-channel MOS pipe Q1 grid D, the 7 pin connection of isolation drive transformer T1 secondary coil
3rd N-channel MOS pipe Q3 grid D, the 3rd N-channel MOS pipe Q3 source ground, G points of the 3rd N-channel MOS pipe Q3 drain electrode
The source electrode, the 1-2 pin of high-frequency high-power transformer T3 primary coil and isolation drive for not connecting the first N-channel MOS pipe Q1 become
5 pin of depressor T1 secondary coil, the first N-channel MOS pipe Q1 drain electrode G the first rectifier bridges of connection BD1 output voltage anode V
+, the first rectifier bridge BD1 output voltage negative terminal V ﹣ ground connection G.5th electric capacity C5 one end connects high-frequency high-power transformer respectively
The 3-4 pin of T3 primary coil and the 12nd electric capacity C12 one end, the 5th electric capacity C5 other end connect the first electric capacity C1's respectively
One end and the second electric capacity C2 one end, the 12nd electric capacity C12 other end connect the 13rd resistance R13 tremendously high frequency high-power transformers T3
Primary coil 1-2 pin, the first electric capacity C1 other end connects the first rectifier bridge BD1 output voltage anode V+, the second electricity
The other end for holding C2 connects the first rectifier bridge BD1 output voltage negative terminal V ﹣, and the first electric capacity C1 capacitance and the second electricity
The capacitance for holding C2 is equal.3rd resistor R3 is connected in parallel with the first electric capacity C1, and the 4th resistance R4 is in parallel with the second electric capacity C2 even
Connect, and 3rd resistor R3 resistance is equal with the 4th resistance R4 resistance.
Referring to Fig. 3, semi-bridge switching voltage regulator main circuit mainly completes main power power-supply AC-DC conversion, and TL494 chips are
Control centre, circuit solves the first N-channel MOS pipe Q1, the second N-channel MOS pipe Q2 from topology and at a time simultaneously turned on
Phenomenon problem, using cross-couplings closed circuit (T1 coils 1), when turning on one of N-channel MOS pipe, another N ditch
Road metal-oxide-semiconductor driving is in closed state, until the shut-off of previous N-channel MOS pipe, and closing is just cancelled, and latter N-channel MOS pipe is
There is the possibility of conducting.This automatic block has self-reacting advantage to storage time, parameter distribution, and can be with to dutycycle
Full scale is used, and will not also burning out two N-channel MOS pipes even in the situation that drive circuit is damaged, (two N-channel MOS pipes are located
In cut-off state).When the first N-channel MOS pipe Q1 is open-minded, when the 3rd N-channel MOS pipe Q3 is turned off, now high-frequency high-power transformation
Voltage added by device T3 two ends is the half of busbar voltage, while energy is transmitted from primary coil to secondary coil；When the first N ditches
Road metal-oxide-semiconductor Q1 turn off, the 3rd N-channel MOS pipe Q3 turn off when, now the two of high-frequency high-power transformer T3 secondary coil around
Group is due to two fast recovery diode D1 afterflows simultaneously in short-circuit condition, and the winding of primary coil also corresponds to short-circuit shape
State；When the first N-channel MOS pipe Q1 shut-offs, when the 3rd N-channel MOS pipe Q3 is opened, now high-frequency high-power transformer T3 is also basic
On be busbar voltage half, while energy is transmitted from primary coil to secondary coil, two of secondary coil fast to recover two poles
Pipe D1 completes the change of current.
Due to the first electric capacity C1, the second electric capacity C2 tie points current potential with the first N-channel MOS pipe Q1, the 3rd N-channel
Metal-oxide-semiconductor Q3 conducting situations are floated, so the volt-seconds value of each transistor switch can be balanced automatically.When floating is unsatisfactory for requiring
When, it is assumed that the first N-channel MOS pipe Q1, the 3rd N-channel MOS pipe Q3 have different switching characteristics, i.e., in identical base stage pulse
Under width t=t1, the first N-channel MOS pipe Q1 shut-offs are slower, and the 3rd N-channel MOS pipe Q3 is very fast, then to two electric capacity (C1 and
C2) voltage of tie point will have an impact, and just have uneven volt-seconds value, and reason is exactly that the first N-channel MOS pipe Q1 shut-offs are prolonged
Late.If with this unbalanced drive waveform transformer, it will produce bias phenomenon, cause magnetic core saturation and produce excessive
Transistor collector current, so as to reduce the efficiency of converter, makes transistor out of control, or even burn.So circuit is in high frequency
Add the 5th electric capacity C5 of a series connection in high-power transformer T3 primary coil, then what is be directly proportional to unbalanced volt-seconds value is straight
Stream bias will be filtered by secondary electric capacity, so during transistor turns, will balanced voltage volt-seconds value, reach and eliminate magnetic bias
Purpose.
From circuit structure, need to consider the pressure of electric capacity during from the first electric capacity C1 and the second electric capacity C2 on bridge arm
Problem, makes the capacitance of two electric capacity equal, then when one of switching tube (N-channel MOS pipe) is turned on, the electricity on winding
Pressure only has the half of supply voltage, reaches voltage equalizing, but also distinguish simultaneously at the first electric capacity C1 and the second electric capacity C2 two ends
Join 3rd resistor R3 and the 4th resistance R4, and the resistance of two resistance is equal, the first electric capacity C1 and the second electric capacity C2 effect
It is exactly the volt-seconds value for each switching tube of autobalance, and the effect of the 5th electric capacity is the direct current point for filtering off influence voltage-second balance
Amount.Output be TL494 chips by the feedback regulation of itself so that the voltage on the second N-channel MOS pipe Q2 and current sample electricity
The voltage sum U hindered on RJ1 is constant, and specific equilibrium relationships are：U*R31/ (R23+R24+R31)=5V*R22/ (R22+
R30), this be a feedback regulation equation, 5V is the inside output reference voltage of TL494 chips, actual to calculate U and take
4.3V, if the voltage value is too high, the second N-channel MOS pipe Q2 heatings can be very serious, too low to influence the normal work of circuit
Make because Switching Power Supply directly cannot output voltage it is too low, so design it is also an advantage that, be exactly when export high current
When, current sampling resistor RJ1 voltage can be higher, so that the voltage above the second N-channel MOS pipe Q2 is relatively low, so that
It can prevent the second N-channel MOS pipe Q2 from being overheated in high current from certain degree.
Referring to Fig. 1,4 and 6, output pressure regulation current-limiting circuit includes voltage-regulation potentiometer, the first discharge circuit, four high guaily unit
Circuit and the 3rd discharge circuit, voltage-regulation potentiometer give the first discharge circuit negative pressure signal when, the first discharge circuit by than
Example integrating circuit controls the second N-channel MOS pipe Q2 conducting so that the output voltage increase of whole power supply；Voltage-regulation current potential
When device gives four high guaily unit circuit malleation signal, four high guaily unit circuit passing ratio integrating circuit controls the second N-channel MOS pipe Q2's
Disconnect, to reach the effect of current limliting or constant current；3rd discharge circuit respectively with four high guaily unit circuit and voltage-regulation potentiometer
Connection, the 3rd discharge circuit is used to connect LED to show that whole power supply is in pressure constant state/constant current state.
Referring to Fig. 4, GNDI is output plus terminal for connecing whole power supply in figure, and GND then connects the negative terminal of whole power supply, interface
CN5 1 pin is to meet LED to show constant voltage/constant current pattern, and 2-4 pin, which connect voltage-regulation potentiometer, to be used to adjust output current, 5-7 pin
It is to connect voltage-regulation potentiometer to be used to adjust output voltage, the first discharge circuit (including operational amplifier U6A, by voltage control)
Passing ratio integrating circuit control the second N-channel MOS pipe Q2 conducting, when voltage-regulation potentiometer to operational amplifier U6A 2
During pin negative pressure signal, operational amplifier U6A output high level controls the second N-channel MOS pipe Q2 conducting, the second N-channel MOS pipe
The balance that TL494 chips are set up necessarily is broken in Q2 conducting (equivalent to load down) so that whole system output voltage
Increase；When operational amplifier U6A 2 pin negative pressure rise, operational amplifier U6A output low levels, the second N-channel MOS pipe Q2
Resistance on side drags down the second N-channel MOS pipe Q2 grid voltage for 10k the 8th resistance R8, promotes the second N-channel MOS
Pipe Q2 disconnects.Four high guaily unit circuit (including operational amplifier U6D, by current control) passing ratio integrating circuit controls the 2nd N
Channel MOS tube Q2 disconnection, when 12 pin malleation signal of the voltage-regulation potentiometer to operational amplifier U6D, operational amplifier
U6D output low level control the second N-channel MOS pipes Q2 is disconnected to reach the effect of current limliting or constant current, if voltage is adjusted certainly
Current problems are just not present in 0V in section, because the second N-channel MOS pipe Q2 is always off-state.Second N-channel MOS pipe Q2 sides
On the second voltage-regulator diode D2 be 11V voltage-stabiliser tubes, for preventing the second N-channel MOS pipe Q2 grid voltage too high.3rd fortune
Electric discharge road is to be compared by current limit signal and a reference voltage so as to output signal, when current limiting signal just exports high electricity
Flat, no current limit signal then exports low level.
Referring to Fig. 5 and 6, overtension and the too high protection circuit of temperature compare device with operational amplifier U6B and are compared,
When output voltage is too high, trigger switch power supply control chip TL494 4 pin are turned off；Temperature sensor CN2 is also same
Reason, when temperature is too high, temperature sensor CN2 conductings so that Switching Power Supply control chip TL494 4 pin are high level, are entered
And Switching Power Supply turns off to protect.
The operation principle of the present invention is as follows：
A kind of novel high-power semibridge system output rearrangeable switch power supply is an AC-DC electricity using half-bridge as topological structure
Road, TL494 is the Master control chip of Switching Power Supply, and the chip causes Switching Power Supply defeated by internal reference voltage and comparator
Go out voltage stabilizing on metal-oxide-semiconductor, then and the break-make of output mos pipe is controlled to change the balance of voltage stabilizing by amplifier with reach output voltage/
The purpose of current adjustment.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (9)
1. a kind of novel high-power semibridge system exports rearrangeable switch power supply, it is characterised in that：Including AC-DC power circuits, half-bridge
Formula Switching Power Supply main circuit, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature, the AC-DC power supplys electricity
Road, output pressure regulation current-limiting circuit and overtension and the too high protection circuit of temperature respectively with the semi-bridge switching voltage regulator main circuit
Electrical connection；The AC-DC power circuits are using isolation flyback power supply, for being provided for the semi-bridge switching voltage regulator main circuit
± 12V DC voltage；The semi-bridge switching voltage regulator circuit is used for the conversion for completing main power power-supply AC-DC；The output
Pressure regulation current-limiting circuit is used for the output current or output voltage for adjusting the semi-bridge switching voltage regulator main circuit；The overtension
It is used to turn off Switching Power Supply in overtension or too high temperature with the too high protection circuit of temperature to protect the semibridge system to switch
Electric power main circuit.
2. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 1, it is characterised in that：Described half
It is substantially electric that bridge switch electric power main circuit includes TL494 chips, isolation drive transformer, semi-bridge switching voltage regulator high voltage input terminal
Road, high-frequency high-power transformer, the second N-channel MOS pipe and current sampling resistor, the TL494 chips pass through bi-pulse width
Modulation circuit and H-bridge circuit are electrically connected with the isolation drive transformer, the isolation drive transformer by drive metal-oxide-semiconductor with
The semi-bridge switching voltage regulator high voltage input terminal basic circuit is electrically connected and by driving metal-oxide-semiconductor to drive the high-frequency high-power to become
Depressor, the secondary coil of the high-frequency high-power transformer links up the drain electrode of metal-oxide-semiconductor by fast recovery diode and the 2nd N
Electrical connection, the source electrode of the second N-channel MOS pipe connects the current sampling resistor to output plus terminal of whole power supply, institute
State the grid connection output pressure regulation current-limiting circuit of the second N-channel MOS pipe.
3. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 2, it is characterised in that：It is described
The common port of the 13-15 pin of TL494 chips connects the 22nd resistance to 2 pin of the TL494 chips, 2 pin of the TL494 chips
The 30th resistance is connected to output plus terminal of whole power supply, 1 pin of the TL494 chips connects the moon of the 15th voltage-regulator diode
Pole, the anode of the 15th voltage-regulator diode connects output plus terminal of whole power supply, and 1 pin of the TL494 chips is sequentially connected the
The drain electrode of 24 resistance, the 23rd resistance and the second N-channel MOS pipe, the 31st resistance is connected in parallel with the 15th voltage-regulator diode, the 23rd electricity
Appearance is connected with the 23rd resistor coupled in parallel.
4. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 3, it is characterised in that：It is described defeated
Going out pressure regulation current-limiting circuit includes voltage-regulation potentiometer, the first discharge circuit, four high guaily unit circuit and the 3rd discharge circuit, described
When voltage-regulation potentiometer gives the first discharge circuit negative pressure signal, the first discharge circuit passing ratio integrating circuit control
Make the conducting of the second N-channel MOS pipe so that the output voltage increase of whole power supply；The voltage-regulation potentiometer is to institute
When stating four high guaily unit circuit malleation signal, the four high guaily unit circuit passing ratio integrating circuit controls second N-channel MOS
The disconnection of pipe, to reach the effect of current limliting or constant current；3rd discharge circuit respectively with the four high guaily unit circuit and institute
The connection of voltage-regulation potentiometer is stated, the 3rd discharge circuit is used to connect LED to show that whole power supply is in pressure constant state/perseverance
Stream mode.
5. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 2, it is characterised in that：Described half
Bridge switch power supply high voltage input terminal basic circuit includes the first rectifier bridge, the 6 of the secondary coil of the isolation drive transformer
Pin connects the grid of the first N-channel MOS pipe, and 7 pin of the secondary coil of the isolation drive transformer connect the 3rd N-channel MOS
The grid of pipe, the source ground of the 3rd N-channel MOS pipe, the drain electrode of the 3rd N-channel MOS pipe connects the first N-channel MOS pipe respectively
Source electrode, the 5 of the secondary coil of the 1-2 pin of the primary coil of the high-frequency high-power transformer and the isolation drive transformer
Pin, the output voltage anode of drain electrode connection first rectifier bridge of the first N-channel MOS pipe, the output of first rectifier bridge
Voltage negativing ending grounding.
6. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 5, it is characterised in that：5th electricity
One end of appearance connects the 3-4 pin of the round edge coil of the high-frequency high-power transformer and one end of the 12nd electric capacity, the 5th electricity respectively
The other end of appearance connects one end of the first electric capacity and one end of the second electric capacity respectively, and the other end of the 12nd electric capacity connects the 13rd resistance
To the 1-2 pin of the primary coil of the high-frequency high-power transformer, the other end of first electric capacity connects first rectification
The output voltage anode of bridge, the output voltage negative terminal of other end connection first rectifier bridge of second electric capacity, and the
The capacitance of one electric capacity is equal with the capacitance of the second electric capacity.
7. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 6, it is characterised in that：3rd electricity
Resistance is connected in parallel with the first electric capacity, and the 4th resistance is connected in parallel with the second electric capacity, and the resistance of 3rd resistor and the 4th resistance
Resistance it is equal.
8. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 1, it is characterised in that：The electricity
Pressing through the high and too high protection circuit of temperature includes temperature sensor and the second discharge circuit, the temperature sensor and described second
4 pin of the discharge circuit respectively with the TL494 chips are connected；Second discharge circuit is used as comparator, when output voltage mistake
Gao Shi, then 4 pin for triggering the TL494 chips are turned off；When temperature is too high, the temperature sensor conducting so that institute
4 pin for stating TL494 chips are high level, and then turn off Switching Power Supply.
9. a kind of novel high-power semibridge system output rearrangeable switch power supply as claimed in claim 1, it is characterised in that：It is described
AC-DC power circuits include the second rectifier bridge, DK112 chips, the second transformer and photo-coupler, and alternating current 220V civil power is inputted,
After second rectifier bridge, direct current non-isolated voltage is obtained, passes through opening for the integrated MOSFET of the DK112 chip internals
Open, make the continuous energy storage of primary coil of second transformer, after the MOSFET shut-offs of the DK112 chip internals, lead to
The secondary coil for crossing transformer discharges the energy of storage, and then feeds back to the 3 of the DK112 chips by the photo-coupler
Pin, constantly adjusts the DK112 chips square wave pulse width so that the voltage of secondary coil obtains ﹢ after rectifies
12V DC voltages, another circle coil of secondary coil is in control ﹣ 12V voltages by 12V voltage stabilizings.
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|---|---|---|---|
| CN201710471739.4A CN107124111A (en) | 2017-06-20 | 2017-06-20 | A kind of novel high-power semibridge system exports rearrangeable switch power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710471739.4A CN107124111A (en) | 2017-06-20 | 2017-06-20 | A kind of novel high-power semibridge system exports rearrangeable switch power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704962A (en) * | 2019-08-29 | 2020-01-17 | 石家庄科林电气股份有限公司 | Manufacturing method of double-power output energy-taking magnetic core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447733A (en) * | 2007-12-26 | 2009-06-03 | 程杰保 | High-efficient linear DC stable power supply |
| CN202759283U (en) * | 2012-08-17 | 2013-02-27 | 佛山市柏克新能科技股份有限公司 | Auxiliary power supply for high-power UPS |
| CN204046233U (en) * | 2014-08-14 | 2014-12-24 | 浙江肯得机电股份有限公司 | The structure of a kind of electronic control type charger and circuit |
| CN207910691U (en) * | 2017-06-20 | 2018-09-25 | 苏州工业职业技术学院 | A kind of novel high-power semibridge system output rearrangeable switch power supply |
-
2017
- 2017-06-20 CN CN201710471739.4A patent/CN107124111A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447733A (en) * | 2007-12-26 | 2009-06-03 | 程杰保 | High-efficient linear DC stable power supply |
| CN202759283U (en) * | 2012-08-17 | 2013-02-27 | 佛山市柏克新能科技股份有限公司 | Auxiliary power supply for high-power UPS |
| CN204046233U (en) * | 2014-08-14 | 2014-12-24 | 浙江肯得机电股份有限公司 | The structure of a kind of electronic control type charger and circuit |
| CN207910691U (en) * | 2017-06-20 | 2018-09-25 | 苏州工业职业技术学院 | A kind of novel high-power semibridge system output rearrangeable switch power supply |
Non-Patent Citations (1)
| Title |
|---|
| 蔡成炜等: "一种新型开关电源并联供电系统的设计" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110704962A (en) * | 2019-08-29 | 2020-01-17 | 石家庄科林电气股份有限公司 | Manufacturing method of double-power output energy-taking magnetic core |
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Application publication date: 20170901 |