CN208062486U - A kind of power source of semiconductor laser circuit - Google Patents
A kind of power source of semiconductor laser circuit Download PDFInfo
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- CN208062486U CN208062486U CN201721512242.4U CN201721512242U CN208062486U CN 208062486 U CN208062486 U CN 208062486U CN 201721512242 U CN201721512242 U CN 201721512242U CN 208062486 U CN208062486 U CN 208062486U
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 52
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Abstract
The utility model provides a kind of power source of semiconductor laser circuit, wherein circuit includes：Synchronous buck formula translation circuit, controller, senser sampling circuit, the first driving circuit, first switch pipe, load；Controller is connect with the second driving circuit in synchronous buck formula translation circuit；Senser sampling circuit one end is connect with the output end of the first inductance in synchronous buck formula translation circuit, and the other end is connect with controller；One end of first driving circuit is connect with the first end of first switch pipe, and the other end is connect with controller；The second end of first switch pipe and the connection of load, third end and the second capacitance connection in synchronous buck formula translation circuit, the circuit may be implemented to all have higher delivery efficiency under continuous mode and quasi-continuous pattern, the current stability of output is good, requirement of the semiconductor laser to current stability can preferably be met, solve problem of the prior art.
Description
Technical field
The utility model is related to power electronics fields, more particularly to a kind of power source of semiconductor laser circuit.
Background technology
Semiconductor laser is most important one kind one of laser in practical application, quickly grow in recent years, using compared with
Extensively, have many advantages, such as that electrical efficiency height, long lifespan, small, stability is high.
Power source of semiconductor laser circuit can be divided into according to operating mode：Continuous mode, quasi-continuous pattern and pulse
Pattern, quasi-continuous operation mode refer to the non-continuous mode that its operating current is impulse form, and pulse frequency is from 1Hz to tens of
KHz, pulsewidth have from 20 microseconds to hundreds of microseconds etc. in many applications of such as laser sensor and optical fiber laser
This quasi-continuous use demand.
In addition, the current quality that the laser diode in semiconductor laser exports power supply is more demanding, specifically,
It is required that the current waveform of driving power output is as close possible to a rectangular wave, the rising edge and failing edge of rectangular wave should be as possible
It is short；Simultaneously as the overshoot meeting noise spectra of semiconductor lasers occurred in electric current uphill process causes to impact, it is therefore desirable to rise
There cannot be overshoot after reaching setting value.Then, it is necessary to which the driving power of semiconductor laser can be completed within a certain period of time
Storage to energy, and at the appropriate moment by the energy abrupt release of storage.There are following several circuits that can be in the prior art
Semiconductor laser provides energy：
1, the linearity control circuit of capacitive energy storage.
The linearity control circuit of capacitive energy storage is as shown in Figure 1, preceding stage DC-DC (DC-DC) converter is operated in constant pressure
Pattern, output are capacitance C1Charging, switching tube Q1It is operated in linear model, by controlling switching tube Q1Driving voltage come it is real
The linear closed-loop of existing output current is adjusted.The current stability, of this circuit output is preferable, but since phase is connected in switching tube
When in a resistance, leading to capacitance C1Voltage difference is switched on and off pipe Q1 and is consumed completely between load semiconductor laser LD, institute
With the efficiency of the circuit is relatively low.
2, storage capacitor ON-OFF control circuit.
As shown in Fig. 2, the principle of the circuit is to work as switching tube Q1When disconnection, preceding stage DC-DC converter is capacitance C1Charging,
As switching tube Q1When closure, storage capacitor C1To load LD electric discharges, driving current is provided.The circuit structure is simple, preceding stage DC-DC
Power needed for converter is smaller, but capacitance needed for this circuit is larger, and since capacitance electric discharge is instantaneously completed, leads
Cause the circuit that can not export rectangular wave, so it can not be operated in continuous mode and quasi-continuous pattern, in addition, capacitance output current
For amplitude also by capacitor charging voltage influence, practical effect is poor.
3, inductive energy storage paralleling switch control circuit.
As shown in figure 3, the circuit passes through inductance storage energy, when load LD is not turned on, switching tube Q2Conducting, it is electric at this time
Stream passes through inductance L and switching tube Q2.When semiconductor laser needs ON operation, switching tube Q2It disconnects, at this moment energy is from input
Side has been directly passed to semiconductor laser.This circuit can make current pulse shape with preferable rising edge, but by
In using inductance, as main energy storage device, the energy storage density of inductive element is relatively low, and the inductance value resulted in the need for is larger, because
This, the inductance of this circuit actual use is very heavy, causes circuit volume and weight larger, it has not been convenient to practical application.
In addition, in foregoing circuit, control function and energy storage release function are all completed by an element, it is difficult to while meeting
When exporting rectangular wave, two conditions of the electric current rate of climb and electric current output stability.Therefore, existing power source of semiconductor laser
Delivery efficiency of the circuit under quasi-continuous pattern is relatively low, and is not well positioned to meet semiconductor laser and exports electricity to power circuit
Flow the demand of stability.
Utility model content
The utility model provides a kind of power source of semiconductor laser circuit, to solve the problems, such as the as follows of the prior art：It is existing
Delivery efficiency of some power source of semiconductor laser circuits under quasi-continuous pattern is relatively low, and is not well positioned to meet semiconductor and swashs
Demand of the light device to its power circuit outputting current steadily.
In order to solve the above technical problems, the utility model provides a kind of power source of semiconductor laser circuit, including：Synchronous drop
Pressure type translation circuit, controller, senser sampling circuit, the first driving circuit, first switch pipe, load；Wherein, the control
Device is connect with the second driving circuit in the synchronous buck formula translation circuit；Described senser sampling circuit one end with it is described synchronous
The output end connection of the first inductance, the other end are connect with the controller in Buck conversion circuit；First driving circuit
One end connect with the first end of the first switch pipe, the other end is connect with the controller；The of the first switch pipe
The connection at two ends and the load, third end and the second capacitance connection in the synchronous buck formula translation circuit.
Optionally, the synchronous buck formula translation circuit includes：First direct voltage source, the second driving circuit, second open
Guan Guan, third switching tube, first inductance, second capacitance；Wherein, first direct voltage source anode with it is described
The second end of second switch pipe connects, and cathode is connect with the cathode at the third end of the third switching tube and second capacitance；
The first end of the second switch pipe is connect with second driving circuit, input terminal and institute of the third end with first inductance
State the second end connection of third switching tube；The first end of the third switching tube is connect with second driving circuit；Described
The output end of one inductance is connect with the anode of second capacitance.
Optionally, one end that parallel circuit is connected in the second end of switching tube, the connection electricity in parallel at the third end of switching tube
The other end on road, wherein the parallel circuit is made of capacitance and diodes in parallel, and the switching tube is the first switch
It is any one or more in pipe, second switch pipe and third switching tube.
Optionally, the first capacitance, it is in parallel with the first direct voltage source in the synchronous buck formula translation circuit.
Optionally, the controller includes：Sequentially connected operational amplification circuit, comparison circuit and nor gate.
Optionally, the operational amplification circuit includes：Predetermined microcontroller, first resistor, second resistance, 3rd resistor,
Four resistance, the 5th resistance, third capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance, the 7th capacitance, zener diode and pre-
Determine operational amplifier；
Wherein, one end of one end of the first resistor and the senser sampling circuit output end and the second resistance
Connection, the other end of the first resistor connect with one end of the third capacitance, the other end of the third capacitance with it is described
One end of 3rd resistor, one end of the 4th capacitance, the other end of the second resistance and the predetermined operation amplifier
Inverting input connection, the other end of the 3rd resistor connect with one end of the 5th capacitance, the 5th capacitance
The other end, the output end of the predetermined operation amplifier and one end of the 4th resistance of the other end and the 4th capacitance
Connection；
One end of 5th resistance is connect with the output end of the predetermined microcontroller, the other end of the 5th resistance with
The in-phase input end of predetermined operation amplifier described in one end of 6th capacitance connects, the same phase of the predetermined operation amplifier
The other end of input end grounding, the 6th capacitance is connect with the operational amplifier, the other end ground connection of the 6th capacitance,
One end of 7th capacitance is connect with the operational amplifier, the 7th capacitance other end ground connection, the zener diode
Input terminal connect with the other end of the 7th capacitance, the output end of the zener diode is another with the 4th resistance
End connection；
Wherein, the comparison circuit includes：8th capacitance, the 9th capacitance, the tenth capacitance, the 11st capacitance, the 6th resistance
And predetermined comparator；
The in-phase input end of the predetermined comparator is connect with the output end of the zener diode；8th capacitance
One end is connect with one end of the 6th resistance, and the other end of the 8th capacitance is connect with the predetermined comparator；Described
The other end of six resistance is connect with the predetermined comparator；One end of 9th capacitance connects with one end of the 6th resistance
It connects, the other end of the 9th capacitance is connect with the predetermined comparator；One end of tenth capacitance and the predetermined comparison
The ground terminal of device connects, and the other end of the tenth capacitance is connect with the predetermined comparator；One end of 11st capacitance
It is connect with the ground terminal of the predetermined comparator, the other end of the 11st capacitance is connect with the predetermined comparator；It is described
The ground terminal of predetermined comparator is grounded；
The first input end of the nor gate is connect with the first output end of the comparison circuit, and the second of the nor gate
Input terminal is connect with the second output terminal of the comparison circuit, the output end of the nor gate and first driving circuit and the
The input terminal of two driving circuits connects.
Optionally, the senser sampling circuit includes：Scheduled current sensor, the second inductance, third inductance, the 12nd
Capacitance, the 13rd capacitance, the 14th capacitance, the 15th capacitance, the 7th resistance, the 8th resistance；Wherein, first inductance is defeated
Outlet is connect with the input terminal of the scheduled current sensor, the output end of the scheduled current sensor and second capacitance
Anode connection；One end of second inductance adds negative voltage, the other end of second inductance and the 12nd capacitance
One end is connected with the scheduled current sensor；One end of the third inductance adds positive voltage, the other end of the third inductance
It is connect with one end of the 13rd capacitance and the scheduled current sensor；One end of 7th resistance and the predetermined electricity
One end of flow sensor, one end of the 8th resistance and the 14th capacitance connects, the other end of the 7th resistance
Connect with the other end of the other end of the 12nd capacitance, the other end of the 13rd capacitance and the 14th capacitance
It connects, the other end ground connection of the 7th resistance；The other end of 8th resistance and one end of the 15th capacitance and institute
State the input terminal connection of controller, the other end ground connection of the 15th capacitance.
Optionally, second driving circuit includes：Second direct voltage source, third direct voltage source, the 16th capacitance,
17th capacitance, pre- fixed driver, the 9th resistance；Wherein, the anode of second direct voltage source and the 16th capacitance
One end connected with the power voltage terminal of the pre- fixed driver, the cathode of second direct voltage source and the third direct current
The anode connection of voltage source, the cathode ground connection of the third direct voltage source；The other end of 16th capacitance and described the
The cathode of two direct voltage sources, the anode of the third direct voltage source, the third end of switching tube and the 17th capacitance
One end connection, the 17th capacitance the other end ground connection, wherein the third end of the switching tube be the second switch pipe
With the third end of the third switching tube, alternatively, the third end of the switching tube be the first switch pipe third end；It is described
The input terminal of pre- fixed driver is connect with the output end of the controller, the ground terminal ground connection of the predetermined controller；Described
One end of nine resistance is connect with the output end of the predetermined controller, the first end of the other end and switching tube of the 9th resistance
Connection, wherein the first end of the switching tube is the first end of the second switch pipe and the third switching tube, alternatively, institute
The first end for stating switching tube is the first end of the first switch pipe.
Optionally, the load is semiconductor laser.
Power source of semiconductor laser circuit provided by the utility model, senser sampling circuit connect the transformation of synchronous buck formula
Inductance output end in Buck circuits, controller are connect with senser sampling circuit, controller output end and two driving circuits
Input terminal connection, the output end of two driving circuits connects with corresponding switching tube.Senser sampling circuit is to Buck circuits
The inductive current of middle output is sampled, and sampled result is exported to controller, and electricity is generated through closed loop feedback control by controller
Flow control signals, and export to driving circuit, it is turned off by the conducting of driving circuit driving switch pipe, to realize that circuit is half-and-half led
The driving under different working modes of body laser.Power source of semiconductor laser circuit provided by the utility model, energy storage
Function and control function are realized by different components, and can meet semiconductor laser under continuous mode and quasi-continuous pattern
Different demands, the current stability of output is good, and power circuit efficiency is higher, solves the problems, such as the as follows of the prior art：It is existing
Delivery efficiency of the power source of semiconductor laser circuit under quasi-continuous pattern it is relatively low, and be not well positioned to meet semiconductor laser
Demand of the device to its outputting current steadily.
Description of the drawings
Fig. 1 is the structural schematic diagram of the linearity control circuit of capacitive energy storage in the utility model background technology；
Fig. 2 is the structural schematic diagram of storage capacitor ON-OFF control circuit in the utility model background technology；
Fig. 3 is the structural schematic diagram of inductive energy storage paralleling switch control circuit in the utility model background technology；
Fig. 4 is the structural schematic diagram of the power control circuit of semiconductor laser in the utility model embodiment；
Fig. 5 is a kind of power control circuit structural representation of the semiconductor laser of optimization in the utility model embodiment
Figure；
Fig. 6 is that the structure of the power control circuit for the semiconductor laser that another in the utility model embodiment optimizes is shown
It is intended to；
Fig. 7 is the circuit diagram of controller in the utility model embodiment；
Fig. 8 is the circuit diagram of senser sampling circuit in the utility model embodiment；
Fig. 9 is the circuit diagram of the second driving circuit in the utility model embodiment.
Specific implementation mode
In order to solve the problems, such as the as follows of the prior art：Existing power source of semiconductor laser circuit is under quasi-continuous pattern
Delivery efficiency is relatively low, and is not well positioned to meet demand of the semiconductor laser to its outputting current steadily.This practicality is new
Type embodiment provides a kind of power source of semiconductor laser circuit, and the structural schematic diagram of the circuit is as shown in figure 4, include：
Buck circuits, controller, senser sampling circuit, the first driving circuit, first switch pipe Q1, load LD；Wherein,
Controller is connect with the second driving circuit in Buck circuits；The in senser sampling circuit one end and synchronous buck formula translation circuit
The output end of one inductance connects, and the other end is connect with controller；The first end of one end and first switch pipe of the first driving circuit
Connection, the other end are connect with controller；The second end of first switch pipe and the connection of load, third end are converted with synchronous buck formula
The second capacitance connection in circuit.
Power source of semiconductor laser circuit provided in this embodiment, senser sampling circuit connect the inductance in Buck circuits
Output end, controller are connect with senser sampling circuit, and controller output end is connect with the input terminal of two driving circuits, two
The output end of driving circuit is connected with corresponding switching tube.Senser sampling circuit to the inductive current that is exported in Buck circuits into
Row sampling, sampled result is exported to controller, generates current controling signal by controller, and export to driving circuit, by driving
Dynamic circuit drives switching tube turn-on and turn-off, to meet driving of the circuit noise spectra of semiconductor lasers under different working modes.
Power source of semiconductor laser circuit provided in this embodiment, energy-storage function and control function realized by different components, and
Efficient output can be realized under continuous mode and quasi-continuous pattern, the current stability of output is good, can effectively meet semiconductor
Demand of the laser to current stability, solves the problems, such as the as follows of the prior art：Existing power source of semiconductor laser circuit
Delivery efficiency under quasi-continuous pattern is relatively low, and is not well positioned to meet semiconductor laser to its outputting current steadily
Demand.
In specific implementation, Buck circuits include：First direct voltage source Vin, the second driving circuit, second switch pipe Q1、
Third switching tube Q2, the first inductance L, the second capacitance Co；Wherein, the anode of the first direct voltage source and the second of second switch pipe
End connection, cathode are connect with the cathode at the third end of third switching tube and the second capacitance；The first end of second switch pipe and second
Driving circuit connects, and third end is connect with the second end of the input terminal of the first inductance and third switching tube；The of third switching tube
One end is connect with the second driving circuit；The output end of first inductance is connect with the anode of the second capacitance.In the present embodiment, Buck
The effect of circuit is control output current so that senser sampling circuit is sampled.
It needs to access parallel circuit on switching tube, switching tube connects in the present embodiment for the switching tube in protection circuit
The power control circuit for entering the semiconductor laser after parallel circuit is as shown in Figure 5.The mode of parallel circuit access switching tube has
Body is：One end of parallel circuit is connected in the second end of switching tube, the other end of parallel circuit is connected at the third end of switching tube,
Wherein, parallel circuit is made of capacitance and diodes in parallel, and switching tube is first switch pipe, second switch pipe and third in circuit
It is any one or more in switching tube.Parallel circuit is accessed on switching tube, and electric current in circuit can be prevented excessive to switch
Pipe damages.
It in the present embodiment, as shown in fig. 6, will also be on the basis of Fig. 5 by the voltage source parallel connection first in Buck circuits
Capacitance Cin.First capacitance has the function of filtering, the harmonic components of electric current in circuit can be reduced, to reduce electric current in circuit
The loss of transmission improves the efficiency of power circuit.
To export stabling current, the inductive current exported to Buck electric currents is needed to be adjusted using average current control mode
Section, therefore, controller is mainly made of operational amplification circuit, comparison circuit and gate circuit.Controller in the present embodiment
Circuit diagram as shown in fig. 7, comprises：Sequentially connected operational amplification circuit, comparison circuit and nor gate.
In the present embodiment, operational amplification circuit includes：Predetermined microcontroller, first resistor R42, second resistance R44, third
Resistance R41, the 4th resistance R45, the 5th resistance R48, third capacitance C41, the 4th capacitance C42, the 5th capacitance C39, the 6th capacitance
C46, the 7th capacitance C47, zener diode V18 and predetermined operation amplifier N6, wherein the present embodiment is by operational amplifier collection
At in chip, so removing except the in-phase input end of operational amplifier, inverting input and output end, there is also other companies
Connect end.
In the present embodiment, the specific connection type of operational amplification circuit is as follows：One end of first resistor and sensor sample
Circuit output end is connected with one end of second resistance, and the other end of first resistor is connect with one end of third capacitance, third capacitance
The other end and one end of 3rd resistor, one end of the 4th capacitance, the other end of second resistance and predetermined operation amplifier
Inverting input connects, and the other end of 3rd resistor is connect with one end of the 5th capacitance, the other end of the 5th capacitance and the 4th electricity
One end of the other end of appearance, the output end of predetermined operation amplifier and the 4th resistance connects；One end of 5th resistance with it is predetermined
The output end of microcontroller connects, the in-phase input end of the other end of the 5th resistance and one end predetermined operation amplifier of the 6th capacitance
Connection, the in-phase input end ground connection of predetermined operation amplifier, the other end of the 6th capacitance and the ends V- of operational amplifier connect, the
The other end of six capacitances is grounded, and one end of the 7th capacitance is connect with operational amplifier, the 7th capacitance other end ground connection, two pole of voltage stabilizing
The input terminal of pipe is connect with the other end of the 7th capacitance, and the output end of zener diode is connect with the other end of the 4th resistance.
In the present embodiment, comparison circuit includes：8th capacitance C48, the 9th capacitance C51, the tenth capacitance C50, the 11st
Capacitance C49, the 6th resistance R53 and predetermined comparator N5, comparator also integrate in the chips, so in the present embodiment, in advance
Determining comparator has multiple connecting pins.
In the present embodiment, the specific connection type of comparison circuit is as follows：One end of 8th capacitance and zener diode
Input terminal connects, and the other end of the 8th capacitance is connect with the ends CT of predetermined comparator；One end of 6th resistance and the 8th capacitance
One end connects, and the other end of the 6th resistance is connect with the ends RT of predetermined comparator；One end of 9th capacitance and the one of the 6th resistance
End connection, the other end of the 9th capacitance are connect with the soft start end of predetermined comparator；One end of tenth capacitance and predetermined comparator
Ground terminal connection, the other end of the tenth capacitance connect with the reference signal output end of predetermined comparator；The one of 11st capacitance
End is connect with the ground terminal of predetermined comparator, and the other end of the 11st capacitance is connect with the ends VCC of predetermined comparator, makes a reservation for compare
The ground terminal of device is grounded；The first input end of nor gate and the first output end of comparison circuit connect, the second input of nor gate
End is connect with the second output terminal of the comparison circuit, the output end of nor gate and the first driving circuit and the second driving circuit
Input terminal connects.
In the present embodiment, senser sampling circuit is as shown in figure 8, include：Scheduled current sensor N1, the second inductance
L1, third inductance L2, the 12nd capacitance C2, the 13rd capacitance C3, the 14th capacitance C4, the 15th capacitance C1, the 7th resistance R1,
8th resistance R2.
The specific connection type of senser sampling circuit is as follows：The output end of first inductance is defeated with scheduled current sensor
Enter end connection, the output end of scheduled current sensor is connect with the anode of the second capacitance；One end of second inductance adds negative voltage, the
The other end of two inductance is connect with one end of the 12nd capacitance and scheduled current sensor；One end of third inductance adds positive voltage,
The other end of third inductance is connect with one end of the 13rd capacitance and scheduled current sensor；One end of 7th resistance and predetermined electricity
One end of flow sensor, one end of the 8th resistance and the 14th capacitance connects, the other end and the 12nd capacitance of the 7th resistance
The other end, the 13rd capacitance the other end and the 14th capacitance the other end connection, the 7th resistance the other end ground connection；The
The other end of eight resistance is connect with the input terminal of one end of the 15th capacitance and controller, another termination of the 15th capacitance
Ground.
In the present embodiment, the second driving circuit is as shown in figure 9, include：Second direct voltage source V2, third DC voltage
Source V3, the 16th capacitance C16, the 17th capacitance C17, pre- fixed driver N3, the 9th resistance R9；
The specific connection type of second driving circuit is：The anode of second direct voltage source and one end of the 16th capacitance and
The power voltage terminal of pre- fixed driver connects, and the cathode of the second direct voltage source is connect with the anode of third direct voltage source, the
The cathode of three direct voltage sources is grounded；The other end of 16th capacitance and the cathode of the second direct voltage source, third DC voltage
One end of the anode in source, the third end of switching tube and the 17th capacitance connects, the other end ground connection of the 17th capacitance, wherein
The third end of switching tube is the third end of second switch pipe and third switching tube, alternatively, the third end of switching tube is first switch
The third end of pipe；The input terminal of pre- fixed driver and the output end of controller connect, the ground terminal ground connection of predetermined controller；9th
The output end of one end of resistance and predetermined controller connects, the first end connection of the other end and switching tube of the 9th resistance of institute.
In the present embodiment, the element and connection relation phase for including due to two driving circuits in semiconductor laser
Together, therefore, the first end of above-mentioned switching tube can be the first end of second switch pipe and third switching tube, can also be first to open
Close the first end of pipe.
Foregoing circuit forms a power circuit, and to drive semiconductor laser, which can realize in continuous model
With the output current of equal energy efficient stable under quasi-continuous pattern, semiconductor laser is enable to keep steady operation.
Although being example purpose, the preferred embodiment of the utility model is had been disclosed for, those skilled in the art will anticipate
It is also possible to know various improvement, increase and replace, and therefore, the scope of the utility model should be not limited to the above embodiments.
Claims (9)
1. a kind of power source of semiconductor laser circuit, which is characterized in that including：
Synchronous buck formula translation circuit, controller, senser sampling circuit, the first driving circuit, first switch pipe, load；
Wherein, the controller is connect with the second driving circuit in the synchronous buck formula translation circuit；
Described senser sampling circuit one end is connect with the output end of the first inductance in the synchronous buck formula translation circuit, another
End is connect with the controller；
One end of first driving circuit is connect with the first end of the first switch pipe, and the other end connects with the controller
It connects；
In the connection of the second end and the load of the first switch pipe, third end and the synchronous buck formula translation circuit
Second capacitance connection.
2. power source of semiconductor laser circuit as described in claim 1, which is characterized in that the synchronous buck formula translation circuit
Including：
First direct voltage source, the second driving circuit, second switch pipe, third switching tube, first inductance, second electricity
Hold；
Wherein, the anode of first direct voltage source is connect with the second end of the second switch pipe, cathode and the third
The third end of switching tube is connected with the cathode of second capacitance；
The first end of the second switch pipe is connect with second driving circuit, the input terminal at third end and first inductance
It is connected with the second end of the third switching tube；
The first end of the third switching tube is connect with second driving circuit；
The output end of first inductance is connect with the anode of second capacitance.
3. power source of semiconductor laser circuit as claimed in claim 1 or 2, which is characterized in that connect in the second end of switching tube
The one end for connecing parallel circuit connects the other end of parallel circuit, wherein the parallel circuit is by capacitance at the third end of switching tube
It is formed with diodes in parallel, the switching tube is any one in the first switch pipe, second switch pipe and third switching tube
It is a or multiple.
4. power source of semiconductor laser circuit as described in claim 1, which is characterized in that further include：
First capacitance, it is in parallel with the first direct voltage source in the synchronous buck formula translation circuit.
5. power source of semiconductor laser circuit as described in claim 1, which is characterized in that the controller includes：
Sequentially connected operational amplification circuit, comparison circuit and nor gate.
6. power source of semiconductor laser circuit as claimed in claim 5, which is characterized in that the operational amplification circuit includes：
Predetermined microcontroller, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, third capacitance, the 4th capacitance,
Five capacitances, the 6th capacitance, the 7th capacitance, zener diode and predetermined operation amplifier；
Wherein, one end of the first resistor connects with one end of the senser sampling circuit output end and the second resistance
It connects, the other end of the first resistor is connect with one end of the third capacitance, the other end of the third capacitance and described the
One end of three resistance, one end of the 4th capacitance, the other end of the second resistance and the predetermined operation amplifier
Inverting input connects, and the other end of the 3rd resistor connect with one end of the 5th capacitance, the 5th capacitance it is another
One end and one end of the other end of the 4th capacitance, the output end of the predetermined operation amplifier and the 4th resistance connect
It connects；
One end of 5th resistance is connect with the output end of the predetermined microcontroller, the other end of the 5th resistance with it is described
The in-phase input end of predetermined operation amplifier described in one end of 6th capacitance connects, the homophase input of the predetermined operation amplifier
End ground connection, the other end of the 6th capacitance are connect with the operational amplifier, the other end ground connection of the 6th capacitance, described
One end of 7th capacitance is connect with the operational amplifier, the 7th capacitance other end ground connection, the zener diode it is defeated
Enter end to connect with the other end of the 7th capacitance, the output end of the zener diode and the other end of the 4th resistance connect
It connects；
Wherein, the comparison circuit includes：8th capacitance, the 9th capacitance, the tenth capacitance, the 11st capacitance, the 6th resistance and
Predetermined comparator；
The in-phase input end of the predetermined comparator is connect with the output end of the zener diode；One end of 8th capacitance
It is connect with one end of the 6th resistance, the other end of the 8th capacitance is connect with the predetermined comparator；6th electricity
The other end of resistance is connect with the predetermined comparator；One end of 9th capacitance is connect with one end of the 6th resistance, institute
The other end for stating the 9th capacitance is connect with the predetermined comparator；Described tenth one end of capacitance and connecing for the predetermined comparator
Ground terminal connects, and the other end of the tenth capacitance is connect with the predetermined comparator；One end of 11st capacitance with it is described
The ground terminal of predetermined comparator connects, and the other end of the 11st capacitance is connect with the predetermined comparator；The predetermined ratio
Ground terminal compared with device is grounded；
The first input end of the nor gate is connect with the first output end of the comparison circuit, the second input of the nor gate
End is connect with the second output terminal of the comparison circuit, and the output end of the nor gate drives with first driving circuit and second
The input terminal connection of dynamic circuit.
7. power source of semiconductor laser circuit as described in claim 1, which is characterized in that the senser sampling circuit packet
It includes：
Scheduled current sensor, the second inductance, third inductance, the 12nd capacitance, the 13rd capacitance, the 14th capacitance, the 15th
Capacitance, the 7th resistance, the 8th resistance；
Wherein, the output end of first inductance is connect with the input terminal of the scheduled current sensor, and the scheduled current passes
The output end of sensor is connect with the anode of second capacitance；One end of second inductance adds negative voltage, second inductance
The other end connect with one end of the 12nd capacitance and the scheduled current sensor；One end of the third inductance adds just
Voltage, the other end of the third inductance are connect with one end of the 13rd capacitance and the scheduled current sensor；It is described
One end of one end of the 7th resistance and the scheduled current sensor, one end of the 8th resistance and the 14th capacitance
Connection, the other end of the 7th resistance and the other end of the 12nd capacitance, the 13rd capacitance the other end and
The other end of 14th capacitance connects, the other end ground connection of the 7th resistance；The other end of 8th resistance and institute
State one end of the 15th capacitance and the input terminal connection of the controller, the other end ground connection of the 15th capacitance.
8. power source of semiconductor laser circuit as claimed in claim 2, which is characterized in that second driving circuit includes：
Second direct voltage source, third direct voltage source, the 16th capacitance, the 17th capacitance, pre- fixed driver, the 9th resistance；
Wherein, the power supply of the anode and one end and the pre- fixed driver of the 16th capacitance of second direct voltage source
Voltage end connects, and the cathode of second direct voltage source is connect with the anode of the third direct voltage source, and the third is straight
The cathode of galvanic electricity potential source is grounded；The other end of 16th capacitance and the cathode of second direct voltage source, the third
One end of the anode of direct voltage source, the third end of switching tube and the 17th capacitance connects, the 17th capacitance
The other end is grounded, wherein and the third end of the switching tube is the third end of the second switch pipe and the third switching tube, or
Person, the third end of the switching tube are the third end of the first switch pipe；
The input terminal of the pre- fixed driver is connect with the output end of the controller, the ground connection termination of the pre- fixed driver
Ground；
One end of 9th resistance is connect with the output end of the predetermined controller, the other end and switch of the 9th resistance
The first end of pipe connects, wherein the first end of the switching tube is the first of the second switch pipe and the third switching tube
End, alternatively, the first end of the switching tube is the first end of the first switch pipe.
9. power source of semiconductor laser circuit as described in claim 1, which is characterized in that the load is semiconductor laser
Device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721512242.4U CN208062486U (en) | 2017-11-13 | 2017-11-13 | A kind of power source of semiconductor laser circuit |
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| CN201721512242.4U CN208062486U (en) | 2017-11-13 | 2017-11-13 | A kind of power source of semiconductor laser circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732654A (en) * | 2017-11-13 | 2018-02-23 | 中国电子科技集团公司第十研究所 | A kind of power source of semiconductor laser circuit and its control method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732654A (en) * | 2017-11-13 | 2018-02-23 | 中国电子科技集团公司第十研究所 | A kind of power source of semiconductor laser circuit and its control method |
| CN107732654B (en) * | 2017-11-13 | 2024-03-22 | 中国电子科技集团公司第十一研究所 | Semiconductor laser power supply circuit and control method thereof |
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