CN207265884U - A kind of AC/DC output voltages regulated power supply - Google Patents
A kind of AC/DC output voltages regulated power supply Download PDFInfo
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- CN207265884U CN207265884U CN201721195407.XU CN201721195407U CN207265884U CN 207265884 U CN207265884 U CN 207265884U CN 201721195407 U CN201721195407 U CN 201721195407U CN 207265884 U CN207265884 U CN 207265884U
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Abstract
It the utility model is related to a kind of AC/DC output voltages regulated power supply; mainly include input filter rectification module, power factor correction module, DC DC conversion modules, accessory power supply and control protection module; single phase ac input is respectively through input filter rectification module, power factor correction module, DC DC conversion modules, out connector connection load; control protection electric circuit receives externally input duty cycle; and from DC DC conversion module output terminal sampled voltage electric currents; the duty cycle of DC DC conversion modules is adjusted, adjusts output voltage.The utility model can adjust output voltage according to external input duty cycle, wide scope；By rationally setting each function module position, increase power source internal space, power supply heat sinking performance is good；Each function module periphery is fixed by metal frame, and is potted, and power supply anti seismic efficiency is good, suitable for harsh environments.
Description
Technical field
The invention belongs to power electronics field, and in particular to a kind of AC/DC output voltages regulated power supply.
Background technology
AC/DC power supplys, can make the device that constant current is formed in circuit, have extensive use.It is right in different occasions
The demand of output voltage is different.In order to meet this demand, the following two methods of generally use：(1) parallel connection power supply system is built
System, exports different voltages, but this method power-supply system is complicated, and control difficulty is big, and needs substantial amounts of adjunct circuit to realize
EMC；(2) the adjustable AC/DC power supplys of output voltage are built, but usually output voltage range is smaller, and cannot be flexible as needed
Adjust output voltage.
In addition, the design of Switching Power Supply is most of to use function module principle nearby, but most of switch electricity at present
The design of power flow direction for example U-shaped power flow direction in source so that power source internal space is smaller, and heat dissipation effect is bad, and controls
The printed boards such as plate, driving plate are directly welded on power amplifier board, are so not suitable for being in the occasion of vibrational state, example for a long time
Such as naval vessels.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of AC/DC output voltages regulated power supply,
Can be according to external input duty cycle, flexible wide scope adjusts output voltage, and output voltage and duty cycle are linear, and
By setting position and the fixed form of each function module, power supply heat sinking, anti-seismic performance are improved.
To realize above-mentioned technical problem, the purpose of this utility model is to provide a kind of AC/DC output voltages regulated power supply,
Including casing and be arranged at the input connector 1 of casing internal, input filter rectification module 2, power factor correction module 3,
DC-DC conversion modules 4, accessory power supply 6, out connector 5 and control protection module 7, the input filter rectification module 2 input
End connects single phase ac input, its output terminal connection power factor correction module 3, the power factor school through input connector 1
Positive 3 output terminal of module connects accessory power supply 6 and DC-DC conversion modules 4 respectively, and protection module 7 carries the accessory power supply 6 in order to control
For operating voltage, the DC-DC conversion modules 4 connect out connector 5；Control 7 input terminal of protection module is respectively connected to
The output terminal of PMW signals and DC-DC conversion modules 4, control protection module 7 output terminal connection DC-DC conversion modules 4, control is protected
Shield module 7 receives the duty cycle of exterior PMW Signal Regulations DC-DC conversion modules 4, adjusts output voltage.
Specifically, it is described control protection module 7 include pwm signal translation circuit, feedback control comparison circuit and
SG3525 chips, the PMW signals are transformed to voltage signal by pwm signal translation circuit, and the voltage signal and output are adopted
Sample control source feedback control comparison circuit, feedback control comparison circuit output terminal connection SG3525 chip compensations end.
Specifically, the pwm signal translation circuit include optocoupler U1, capacitance C1 and C2 and resistance R1, R2, R3,
R4, the pwm signal are input to the anode of optocoupler U1, the minus earth of optocoupler U2 through resistance R1, its collector connects supply voltage,
Its emitter is grounded through resistance R2, the input terminal through resistance R3, R4 connection feedback control circuit；Capacitance C1 one end connects resistance
Node between R3, R4, its other end ground connection；Capacitance C2 one end connects the node between R4 and feedback control circuit input terminal,
Its other end is grounded.
Specifically, feedback control comparison circuit includes operational amplifier U2A, the positive feeder ears of operational amplifier U2A
Connect supply voltage, the positive feeder ears of capacitance C3 one end concatenation operation amplifier U2A, its other end ground connection；Operational amplifier U2A's
Output terminal of the in-phase input end through resistance R5 connection pwm signal translation circuits, its inverting input connection power output end are adopted
Sample voltage signal；Operational amplifier U2A output terminals are connected through resistance R8 with chip SG3525 compensating ends, and capacitance C6 is parallel to computing
Between amplifier U2A inverting inputs and output terminal；Resistance R7 is parallel to capacitance C6 both ends, resistance R6 one end concatenation operation amplification
Device U2A inverting inputs, its other end are connected through capacitance C5 with operational amplifier U2A output terminals, and operational amplifier U2A bears power supply
Connection -15V supply voltages are held, capacitance C4 one end concatenation operation amplifiers U2A bears feeder ear, its other end ground connection.
Specifically, the input filter rectification module (2) is fixed on casing right plate 8, the PFC mould
Block (3) is fixed on chassis backplane 9, and the DC-DC conversion modules 4 are fixed on casing left plate 10, and the control protection module 7 is solid
Casing top plate 11 is scheduled on, each function module periphery is fixed by metal frame, and is potted.
From above technical scheme, a kind of AC/DC output voltages regulated power supply provided by the utility model, control protection
Module receives exterior given duty cycle, adjusts corresponding output voltage, and output voltage and duty cycle are linear, output voltage
Scope is big；And be fixed on each function module is directly independent respectively in each piece of casing plate, and it is potted, with reference to
The pattern handling that the setting position of each function module integrally optimizes power supply, makes its power flow direction in a ring, in power supply
Portion space is big, and heat dissipation effect and vibration resistance are preferable, suitable for severe working environment.
Brief description of the drawings
Fig. 1 is each function module connection figure of the utility model.
Fig. 2 is casing structural scheme of mechanism in the utility model.
Fig. 3 is pwm signal translation circuit figure.
Fig. 4 is feedback control comparison circuit figure.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
The embodiment of the utility model as shown in Figure 1, including casing and it is arranged at casing internal, input connector
1st, input filter rectification module/2, power factor correction module 3, DC-DC conversion modules 4, accessory power supply 6, out connector/5
With control protection module 7,2 input terminal of input filter rectification module connects single phase ac through input connector 1 and inputs, its is defeated
Outlet connects power factor correction module 3, and 3 output terminal of power factor correction module connects accessory power supply 6 and DC-DC respectively
Conversion module 4, protection module 7 provides operating voltage, the connection of DC-DC conversion modules 4 output to the accessory power supply 6 in order to control
Connector 5；Control 7 input terminal of protection module is respectively connected to the output terminal of PMW signals and DC-DC conversion modules 4, and control is protected
7 output terminal of module connection DC-DC conversion modules 4 are protected, control protection module 7 receives exterior PMW Signal Regulations DC-DC conversion modules
4 duty cycle, adjusts output voltage.
The input filter rectification module 2 is fixed on casing right plate 8, and the power factor correction module 3 is fixed on machine
Shell bottom plate 9, the DC-DC conversion modules 4 are fixed on casing left plate 10, and the control protection electric circuit 7 is fixed on casing top plate
11.In the present embodiment, power source internal takes modularized design, and power supply stability is preferable, direct compared to traditional each function module
The fixed form being welded on power amplifier board, each function module periphery is first fixed by metal frame in the present embodiment, then is potted, more
Add the occasion for firmly, being more applicable for being in vibrating state for a long time, for example vehicle, naval vessels etc..Meanwhile reasonable overall arrangement is every
The layout of one piece of function module, power flow direction one annular of approximation, power source space is big, good heat dissipation effect, and wiring path is short.
Specifically, it is described control protection module 7 include pwm signal translation circuit, feedback control comparison circuit and
SG3525 chips, the PMW signals are transformed to voltage signal by pwm signal translation circuit, and the voltage signal and output are adopted
Sample control source feedback control comparison circuit, feedback control comparison circuit output terminal connection chip SG3525 compensating ends.This practicality
The new control signal that PWM two-way complementations are produced using classical control chip SG3525.Chip SG3525 is that a kind of performance is excellent
Good, multiple functional and versatile single-chip integration pwm chip, its simple and reliable and easy to use and flexible, output driving
To push and pull output form, driving force is added；Undervoltage lockout circuit, SS (soft start) control circuit, PWM latch are contained in inside,
There are overcurrent protection function, frequency-adjustable, while maximum duty cycle can be limited, component used in peripheral circuit is few, is controlled by adjusting
System output duty cycle square wave carrys out regulated output voltage.
Specifically, the pwm signal translation circuit include optocoupler U1, capacitance C1 and C2 and resistance R1, R2, R3,
R4, the pwm signal are input to the anode of optocoupler U1, the minus earth of optocoupler U2 through resistance R1, its collector connects 12V power supplys electricity
Pressure, its emitter is grounded through resistance R2, the input terminal through resistance R3, R4 connection feedback control circuit；Capacitance C1 one end connection electricity
Hinder the node between R3, R4, its other end ground connection；Capacitance C2 one end connects the section between R4 and feedback control circuit input terminal
Point, its other end ground connection.
Specifically, feedback control comparison circuit includes operational amplifier U2A, the positive feeder ears of operational amplifier U2A
Connect supply voltage, the positive feeder ears of capacitance C3 one end concatenation operation amplifier U2A, its other end ground connection；Operational amplifier U2A's
Output terminal of the in-phase input end through resistance R5 connection pwm signal translation circuits, its inverting input connection power output end are adopted
Sample voltage signal；Operational amplifier U2A output terminals are connected through resistance R8 with chip SG3525 compensating ends, and capacitance C6 is parallel to computing
Between amplifier U2A inverting inputs and output terminal；Resistance R7 is parallel to capacitance C6 both ends, resistance R6 one end concatenation operation amplification
Device U2A inverting inputs, its other end are connected through capacitance C5 with operational amplifier U2A output terminals, and operational amplifier U2A bears power supply
Connection -15V supply voltages are held, capacitance C4 one end concatenation operation amplifiers U2A bears feeder ear, its other end ground connection.
After choosing the appropriate model of each component, by amplitude be+5V, fixed frequency is 1KHz and duty cycle adjustable one
A pwm signal inputs pwm signal translation circuit, and the voltage signal V of a scope 0V-10V is obtained in its output terminalg, the voltage
Signal VgWith power output end sampled voltage VfIt is input in feedback control comparison circuit, feedback control comparison circuit output terminal connects
The compensating end of chip SG3525, the output duty cycle of control chip SG3525 are connect, so as to adjust DC-DC conversion modules, control is defeated
Go out voltage.When the pwm signal duty cycle of external world's input is 0%-100%, corresponding VgScope is 0V-10V, defeated so as to realize
Going out voltage can be adjusted from 0V.
Embodiment described above is only that the preferred embodiment of the utility model is described, not to this practicality
New scope is defined, and on the premise of the spirit of the design of the utility model is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical solution of utility model is made, should all fall into the protection that the utility model claims book determines
In the range of.
Claims (5)
1. a kind of AC/DC output voltages regulated power supply, including casing and the input connector for being arranged at casing internal（1）, it is defeated
Enter filter rectification module (2), power factor correction module（3）, DC-DC conversion modules（4）, accessory power supply（6）Connected with output
Device（5）, it is characterised in that：Further include control protection module（7）, the input filter rectification module（2）Input terminal connects through input
Connect device（1）Connect single phase ac input, its output terminal connection power factor correction module（3）, the power factor correction module
（3）Output terminal connects accessory power supply respectively（6）With DC-DC conversion modules（4）, the accessory power supply（6）Protection module in order to control
（7）Operating voltage, the DC-DC conversion modules are provided（4）Connect out connector；The control protection module（7）Input terminal
It is respectively connected to PMW signals and DC-DC conversion modules（4）Output terminal, control protection module（7）Output terminal connection DC-DC conversion
Module（4）, control protection module（7）Receive exterior PMW Signal Regulation DC-DC conversion modules（4）Duty cycle, adjust output electricity
Pressure.
2. AC/DC output voltages regulated power supply according to claim 1, it is characterised in that：The control protection module（7）
Including pwm signal translation circuit, feedback control comparison circuit and SG3525 chips, the PMW signals are converted by pwm signal
Circuit transformations are voltage signal, the voltage signal and output sampled voltage input feedback control comparison circuit, feedback control ratio
Compared with circuit output end connection SG3525 chip compensations end.
3. AC/DC output voltages regulated power supply according to claim 2, it is characterised in that：The pwm signal translation circuit
The sun of optocoupler U1 is input to through resistance R1 including optocoupler U1, capacitance C1 and C2 and resistance R1, R2, R3, R4, the pwm signal
Pole, the minus earth of optocoupler U2, its collector connect supply voltage, its emitter is grounded through resistance R2, is connected instead through resistance R3, R4
Present the input terminal of control circuit；Node between capacitance C1 one end connection resistance R3, R4, its other end ground connection；Capacitance C2 one end
Connect the node between R4 and feedback control circuit input terminal, its other end ground connection.
4. AC/DC output voltages regulated power supply according to claim 2, it is characterised in that：Feedback control comparison circuit bag
Include operational amplifier U2A, the positive feeder ear connection supply voltages of operational amplifier U2A, capacitance C3 one end concatenation operation amplification
The positive feeder ears of device U2A, its other end ground connection；The in-phase input end of operational amplifier U2A converts electricity through resistance R5 connections pwm signal
The output terminal on road, its inverting input connect the sampled voltage signal of power output end；Operational amplifier U2A output terminals are through resistance
R8 is connected with chip SG3525 compensating ends, and capacitance C6 is parallel between operational amplifier U2A inverting inputs and output terminal；Resistance
R7 is parallel to capacitance C6 both ends, and resistance R6 one end concatenation operation amplifier U2A inverting inputs, its other end is through capacitance C5 and fortune
The connection of amplifier U2A output terminals is calculated, operational amplifier U2A bears feeder ear connection -15V supply voltages, capacitance C4 one end connection fortune
Calculate amplifier U2A and bear feeder ear, its other end ground connection.
5. AC/DC output voltages regulated power supply according to claim 1, it is characterised in that：The input filter rectification mould
Block（2）It is fixed on casing right plate（8）, the power factor correction module（3）It is fixed on chassis backplane（9）, the DC-DC changes
Change the mold block（4）It is fixed on casing left plate（10）, the control protection module（7）It is fixed on casing top plate（11）, each function
Modular peripheral is fixed by metal frame, and is potted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195407.XU CN207265884U (en) | 2017-09-18 | 2017-09-18 | A kind of AC/DC output voltages regulated power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721195407.XU CN207265884U (en) | 2017-09-18 | 2017-09-18 | A kind of AC/DC output voltages regulated power supply |
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| Publication Number | Publication Date |
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| CN207265884U true CN207265884U (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721195407.XU Active CN207265884U (en) | 2017-09-18 | 2017-09-18 | A kind of AC/DC output voltages regulated power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579669A (en) * | 2017-09-18 | 2018-01-12 | 合肥华耀电子工业有限公司 | A kind of AC/DC output voltages regulated power supply |
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- 2017-09-18 CN CN201721195407.XU patent/CN207265884U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579669A (en) * | 2017-09-18 | 2018-01-12 | 合肥华耀电子工业有限公司 | A kind of AC/DC output voltages regulated power supply |
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