CN203596499U - High-efficiency quick laser-pumped driving power supply and quick start laser - Google Patents
High-efficiency quick laser-pumped driving power supply and quick start laser Download PDFInfo
- Publication number
- CN203596499U CN203596499U CN201320710865.8U CN201320710865U CN203596499U CN 203596499 U CN203596499 U CN 203596499U CN 201320710865 U CN201320710865 U CN 201320710865U CN 203596499 U CN203596499 U CN 203596499U
- Authority
- CN
- China
- Prior art keywords
- circuit
- current
- output
- arranges
- driving power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model provides a high-efficiency quick laser-pumped driving power supply and a quick start laser. The driving power supply comprises a constant-current output positive terminal and a constant-current output negative terminal, and comprises an operation current configuration terminal and a preheat current configuration terminal. When the operation current configuration terminal or the preheat current configuration terminal is enabled, the driving power supply is used for outputting a corresponding current at the constant-current output positive terminal and the constant-current output negative terminal according to the configuration of the enabled operation current configuration terminal or the preheat current configuration terminal. According to the utility model, the laser can be quickly started, so that the problem that the start of the conventional laser is slow is solved.
Description
Technical field
The utility model relates to driving power and the laser of laser, the laser that relates in particular to efficient fast laser pumping driving power and start fast.
Background technology
With laser diode be all light energy converter in essence as fiber laser and the solid state laser of pump light source, they by the pump light of the inferior quality of laser diode transmitting convert that monochromaticjty is good to, good directionality, Output of laser that spot size is little.
The at present driving of laser pumping light source and to control be use Linear Driving power supply substantially, as adjusting device, realizes constant current driving by current feedback by high power transistor or field effect transistor.The feature of this structure driving power is that noise is lower, if design is appropriate, can obtain opening and closing speed faster.But collinearity stabilized voltage power supply is the same, the efficiency of this class power supply is lower, and thermal losses is large.Particularly in the time that pumping source operating voltage is lower and require high-speed switch, efficiency is especially low, require laser system to use huge radiator, cause system energy consumption, volume to increase, weakened fiber laser and the solid state laser advantage as advanced manufacturing process.
Also there is the driving of part laser pumping light source and control and adopt switching mode Constant Current-Source Design.The major defect of this structure driving power is, meeting under the condition of low switch noise, low current overshoot and recoil, foundation and the release time of power supply internal energy are longer, cause driving power opening speed slower, be difficult to reach the requirement of commercial Application (as laser marking and engraving) to laser system.
Summary of the invention
The technical problems to be solved in the utility model, is to provide efficient fast laser pumping driving power and the quick laser starting, and solves the slow problem of existing laser toggle speed.
The utility model is achieved in that
Efficient fast laser pumping driving power, described driving power comprises constant current output anode and constant current output negative terminal, and described driving power comprises that operating current arranges end and preheat curent arranges end; Described driving power is for end is set when enabling or being prohibited at operating current, according to operating current arrange end or preheat curent arrange end be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current.
Further, described operating current arrange end when enabling or being prohibited process be specially: the voltage that when operating current arranges end and enables, operating current arranges end arranges the voltage of end higher than preheat curent, the voltage that when operating current arranges end and is prohibited, preheat curent arranges end arranges the voltage of end higher than operating current; Described driving power arranges according to operating current the voltage that end or preheat curent arrange end and exports corresponding electric current at constant current output anode and constant current output negative terminal.
Further, also comprise power control terminal, described power control terminal is for controlling the constant current output of described driving power.
Further, described driving power comprises that electric current arranges end comparison circuit and constant-current circuit, described electric current arranges end comparison circuit and is connected with constant-current circuit, described electric current arranges end comparison circuit and operating current and end and preheat curent are set arrange to hold and be connected, described constant-current circuit is connected with constant current output anode and constant current output negative terminal, described electric current arranges that end comparison circuit arranges end for operating current relatively and preheat curent arranges the setting of end and enables wherein one end, and the setting of the one end enabling is outputed to constant-current circuit, described constant-current circuit for arrange according to electric current end comparison circuit input be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current.
Further, what described operating current arranged that end and preheat curent arrange end is set to voltage setting, described electric current arranges end comparison circuit and comprises the first voltage comparator, the first described voltage comparator and operating current arrange end and preheat curent and end is set is connected, and the first described voltage comparator arranges and holds and preheat curent arranges the voltage swing of end and enables wherein one end for comparing operating current.
Further, described electric current arranges end comparison circuit and also comprises the first inverter, the one N channel field-effect pipe and the 2nd N channel field-effect pipe, described preheat curent arranges end and is connected with the in-phase input end of the first voltage comparator and the drain electrode of a N channel field-effect pipe, described operating current arranges end and is connected with the inverting input of the first voltage comparator and the drain electrode of the 2nd N channel field-effect pipe, the output of the first described voltage comparator is connected with a grid for N channel field-effect pipe and the input of the first inverter, the output of described the first inverter is connected with the grid of the 2nd N channel field-effect pipe, the source electrode of described the 2nd N channel field-effect pipe is connected with source electrode and the constant-current circuit of a N channel field-effect pipe.
Further, also comprise power control terminal, described power control terminal is connected with constant-current circuit, and described power control terminal is for controlling the constant current output of described driving power.
Further, described constant-current circuit is switching mode constant-current circuit.
Further, described constant-current circuit comprises pulse-width modulation circuit, half-bridge switch circuit and feedback circuit, described pulse-width modulation circuit is connected with half-bridge switch circuit and feedback circuit, described half-bridge switch circuit is connected with feedback circuit, described half-bridge switch circuit is connected with constant current output anode and constant current output negative terminal, and described feedback circuit arranges end comparison circuit with electric current and is connected.
Further, described half-bridge switch circuit comprises the second inverter, the first EFT Drive Unit, the first field effect transistor, the second EFT Drive Unit, the second field effect transistor, inductance, electric capacity and feedback signal Acquisition Circuit, the input of the second described inverter is connected with the first input end of pulse-width modulation circuit and the first EFT Drive Unit respectively, the output of described the second inverter is connected with the second input of the second EFT Drive Unit, the second input of the first described EFT Drive Unit is connected with the grid of the output of the second EFT Drive Unit and the second field effect transistor, the output of the first described EFT Drive Unit is connected with the grid of the first input end of the second EFT Drive Unit and the first field effect transistor, the drain electrode of described the first field effect transistor is connected with power supply, the source electrode of described the first field effect transistor is connected with the drain electrode of one end of inductance and the second field effect transistor, the other end of described inductance is connected with one end of electric capacity and constant current output anode, the other end of described electric capacity, the first collection terminal of the source electrode of the second field effect transistor and feedback signal Acquisition Circuit ground connection respectively, the second collection terminal of described feedback signal Acquisition Circuit is connected with constant current output negative terminal, the signal output part of described feedback signal Acquisition Circuit is connected with feedback circuit.
Further, described feedback circuit comprises the first current sense amplifier, the first operational amplifier and phase compensating circuit, the input of described the first current sense amplifier is connected with half-bridge switch circuit, the output of described the first current sense amplifier is connected with the inverting input of the first operational amplifier and one end of phase compensating circuit, the in-phase input end of described the first operational amplifier arranges end comparison circuit with electric current and is connected, and the output of described the first operational amplifier is connected with the phase compensating circuit other end and pulse-width modulation circuit.
Further, described pulse-width modulation circuit comprises saw-toothed wave generator, clock oscillator, the 3rd inverter, with gate cell, second voltage comparator and trigger, the inverting input of described second voltage comparator is connected with feedback circuit, the output of described second voltage comparator is connected with the set end of trigger, the in-phase input end of described second voltage comparator is connected with saw-toothed wave generator, described saw-toothed wave generator is connected with clock oscillator, described clock oscillator is connected with the 3rd input of inverter and the reset terminal of trigger, the output of described the 3rd inverter be connected with the first input end of gate cell, the reversed-phase output of described trigger be connected with the second input of gate cell, describedly be connected with half-bridge switch circuit with the output of gate cell.
Further, described driving power also comprises power control terminal, described pulse-width modulation circuit also comprises or gate cell, the output of described second voltage comparator be specially being connected of set end of trigger: the output of described second voltage comparator with or the first input end of gate cell be connected, being connected of described or the output of gate cell and the set end of trigger; The second input described or gate cell is connected with power control terminal.
Further, described feedback circuit comprises error protection circuit, and the first input end of described error protection circuit is connected with the output of the first current sensor, the output of described error protection circuit with or the 3rd input of gate cell be connected.
Further; described feedback circuit comprises the second current sense amplifier; two inputs of described the second current sense amplifier are connected with source electrode and the drain electrode of the first effect pipe respectively, and the output of described the second current sense amplifier is connected with the second input of error protection circuit.
And the utility model also provides a kind of laser of quick startup, described laser comprises laser power supply and pump laser diode, described laser power supply be used for providing preheat curent to pump laser diode carry out preheating and for provide operating current drive pump laser diode luminous.
Further, described laser power supply is above-mentioned arbitrary described efficient fast laser pumping driving power.
Further, described laser is fiber laser or solid state laser.
The utlity model has following advantage:
1. the utility model can arrange operating current and the preheat curent of pump laser diode simultaneously, in general, the preheat curent of pump laser diode is set to the electric current that laser diode is about to produce Laser output or has just produced weak laser output, the existence arranging just because of preheat curent, improves the opening speed of pump laser diode and laser system greatly;
2. the utility model has used the driving power of switching mode Constant Current-Source Design as pump laser diode, and compared with traditional Linear Driving power supply, volume obviously reduces, power-efficient improves a lot, meanwhile, reduce system heat load, the temperature rise of air-cooled laser system is obviously reduced.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is the electrical block diagram of driving power of the present utility model.
Fig. 2 is the electrical block diagram of the driving power with power control terminal of the present utility model.
Fig. 3 is the electrical block diagram that has electric current and arrange the driving power of end comparison circuit and constant-current circuit of the present utility model.
Fig. 4 is the electrical block diagram that comprises the driving power that enables comparison circuit physical circuit of the present utility model.
Fig. 5 is the electrical block diagram of the driving power that comprises constant-current circuit physical circuit of the present utility model.
Fig. 6 is the electrical block diagram of a preferred embodiment of driving power of the present utility model.
Fig. 7 is the electrical block diagram of another preferred embodiment of driving power of the present utility model.
Embodiment
Refer to Fig. 1 to shown in Fig. 5, below the utility model is elaborated.
As shown in Figure 1, be efficient fast laser pumping driving power 1 of the present utility model, driving power 1 comprises constant current output anode and constant current output negative terminal, driving power 1 comprise operating current arrange end and preheat curent end is set; Driving power 1 arranges end while enabling for end or preheat curent are set at operating current, according to the operating current enabling arrange end or preheat curent arrange end be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current.Operating current arranges end or preheat curent arranges arranging of end and can adopt electric current setting, voltage setting or set of frequency, after both being compared while enabling, enable Huo little one end, one end that the amount of setting is large, take set of frequency as example, driving power 1 is set to one end that frequency is little to enable, driving power 1 arranges to operating current the frequency that end or preheat curent arrange end and detects and compare, as being set to electric current, the electric current of driving power exports big or small control parameter take that end that frequency is little, (while being 1Kz as frequency, electric current is 1A then to export corresponding electric current; Frequency is 10Kz, and electric current is 10A).The output current of constant current output anode and constant current output negative terminal is used for driving load, as pump laser diode.The generation of the constant current of driving power 1 can adopt linear model or switching mode, and linear model or switching mode produce that constant current is well known to those skilled in the art.
Preferably, operating current arranges end or preheat curent and arranging of end is set adopts voltage setting.The comparison of voltage and voltage as control have advantages of realize convenient and simple, comprehensive energy consumption is considered, when employing enables, both are compared to one end that rear enable voltage is high, be that operating current arranges end or preheat curent and end is set is specially while enabling: the voltage that when operating current arranges end and enables, operating current arranges end arranges the voltage of end higher than preheat curent, the voltage that when preheat curent arranges end and enables, preheat curent arranges end arranges the voltage of end higher than operating current; Described driving power arranges according to the operating current enabling voltage that end or preheat curent arrange end and exports corresponding electric current at constant current output anode and constant current output negative terminal (while being 0.1V as voltage, electric current is 1A; When voltage is 1V, electric current is 10A).
The switch of the constant current output of driving power 1 can realize by opening or cut out power supply, for fear of frequent starting driving power 1 and can make fast each element of driving power inside in running order, driving power 1 also comprises power control terminal (as shown in Figure 2), and power control terminal is for controlling the constant current output of driving power 1.Driving power 1 in the time that power control terminal has signal, the electric current that output arranges, while thering is no signal, output current not.
Particularly, driving power 1 can be realized in the following ways.As shown in Figure 3, driving power 1 comprises that electric current arranges end comparison circuit 10 and constant-current circuit 11, electric current arranges end comparison circuit 10 and is connected with constant-current circuit 11, electric current arranges end comparison circuit 10 and operating current and end and preheat curent are set arrange to hold and be connected, constant-current circuit 11 is connected with constant current output anode and constant current output negative terminal, electric current arranges that end comparison circuit 10 arranges end for operating current relatively and preheat curent arranges the setting of end and enables wherein one end, and the setting of the one end enabling is outputed to constant-current circuit 11, constant-current circuit 11 for arrange according to electric current end comparison circuit input be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current.
Preferably, what operating current arranged that end and preheat curent arrange end is set to voltage setting, electric current arranges end comparison circuit 10 and comprises the first voltage comparator 100, the first voltage comparator 100 and operating current arrange end and preheat curent and end is set is connected, and the first voltage comparator 100 arranges and holds and preheat curent arranges the voltage swing of end and enables wherein one end for comparison operating current.The first voltage comparator 100 relatively after, electric current arranges end comparison circuit 10 can adopt the voltage setting of controlling optocoupler, relay or controllable silicon and carry out switch operating electric current and end and preheat curent are set arrange end.Particularly, can adopt one end that enable voltage is higher.
As shown in Figure 4, electric current arranges end comparison circuit 10 and also comprises the first inverter 101, the one N channel field-effect pipe 102 and the 2nd N channel field-effect pipe 103, preheat curent arranges end and is connected with the in-phase input end of the first voltage comparator 100 and the drain electrode of a N channel field-effect pipe 102, operating current arranges end and is connected with the inverting input of the first voltage comparator 100 and the drain electrode of the 2nd N channel field-effect pipe 103, the output of the first voltage comparator 100 is connected with a grid for N channel field-effect pipe 102 and the input of the first inverter 101, the output of the first inverter 101 is connected with the grid of the 2nd N channel field-effect pipe 103, the source electrode of the 2nd N channel field-effect pipe 103 is connected with source electrode and the constant-current circuit 11 of a N channel field-effect pipe 102.
Wherein, electric current arranges end comparison circuit 10 in the time of work, the voltage that end is set when preheat curent arranges the voltage of end higher than operating current, the output of the first voltage comparator 100 is high level, the output of the first inverter 101 is low level, cause N channel field-effect pipe 102 conductings, the 2nd N channel field-effect pipe 103 ends, and the voltage that preheat curent arranges end is input to constant-current circuit 11; The input voltage that end is set when operating current arranges the input voltage of end higher than preheat curent, the first voltage comparator 100 is output as low level, the first inverter 101 is output as high level, cause a N channel field-effect pipe 102 to end, the 2nd N channel field-effect pipe 103 conductings, the voltage that operating current arranges end is input to constant-current circuit 11.In order to guarantee the complete conducting of two N channel field-effect pipes, the output voltage that should guarantee the first voltage comparator 100 and the first inverter 101 arranges end and preheat curent and arranges the high 5V～10V of voltage of end than operating current.
When driving power 1 comprises electric current, end comparison circuit 10 and constant-current circuit 11 are set, will use power control terminal to control the constant current output of driving power time, particularly, power control terminal is connected with constant-current circuit simultaneously.
In the time that driving power 1 comprises that electric current arranges end comparison circuit 10 and constant-current circuit 11, constant-current circuit 11 preferably adopts switching mode constant-current circuit.Switching mode constant-current circuit has advantages of that conversion efficiency is high.While adopting switching mode, particularly, as shown in Figure 5, constant-current circuit 11 comprises pulse-width modulation circuit 31, half-bridge switch circuit 51 and feedback circuit 71, pulse-width modulation circuit 31 is connected with half-bridge switch circuit 51 and feedback circuit 71, half-bridge switch circuit 51 is connected with feedback circuit 71, and half-bridge switch circuit 51 is connected with constant current output anode and constant current output negative terminal, and feedback circuit 71 arranges end comparison circuit with electric current and is connected.Pulse-width modulation circuit 31 is for generation of PWM ripple, pwm control signal is transferred to half-bridge switch circuit 51, half-bridge switch circuit 51 produces constant current after for driving switch pipe, feedback circuit 71 regulates the output of PWM ripple for the current information after producing is fed back to pulse-width modulation circuit 31, make the output of electric current constant.
As shown in Figure 6, be the specific implementation circuit of pulse-width modulation circuit 31, half-bridge switch circuit 51 and feedback circuit 71.Below will be elaborated to pulse-width modulation circuit 31, half-bridge switch circuit 51 and feedback circuit 71.
Pulse-width modulation circuit 31 comprises saw-toothed wave generator 32, clock oscillator 33, the 3rd inverter 34, with gate cell 35, second voltage comparator 36 and trigger 37, the inverting input of second voltage comparator 36 is connected with feedback circuit 71, the output of second voltage comparator 36 is connected with the set end of trigger 37, the in-phase input end of second voltage comparator 36 is connected with saw-toothed wave generator 32, saw-toothed wave generator 32 is connected with clock oscillator 33, clock oscillator 33 is connected with the 3rd input of inverter 34 and the reset terminal of trigger, the output of the 3rd inverter 34 be connected with the first input end of gate cell 35, the reversed-phase output of trigger 37 be connected with the second input of gate cell 35, be connected with half-bridge switch circuit 51 with the output of gate cell 35.
Half-bridge switch circuit 51 comprises the second inverter 52, the first EFT Drive Unit 53, the first field effect transistor 54, the second EFT Drive Unit 55, the second field effect transistor 56, inductance 57, electric capacity 58 and feedback signal Acquisition Circuit 59, the input of the second inverter 52 is connected with the first input end of pulse-width modulation circuit 31 and the first EFT Drive Unit 53 respectively, the output of the second inverter 52 is connected with the second input of the second EFT Drive Unit 55, the second input of the first EFT Drive Unit 53 is connected with the grid of the output of the second EFT Drive Unit 55 and the second field effect transistor 56, the output of the first EFT Drive Unit 53 is connected with the first input end of the second EFT Drive Unit 55 and the grid of the first field effect transistor 54, such connection is guaranteed the first field effect transistor 54 and the not conducting simultaneously of the second field effect transistor 55 any time.The drain electrode of the first field effect transistor 54 is connected with power supply, the source electrode of the first field effect transistor 54 is connected with one end of inductance 57 and the drain electrode of the second field effect transistor 56, the other end of inductance 57 is connected with one end and the constant current output anode of electric capacity 58, the first collection terminal of the other end of electric capacity 58, the source electrode of the second field effect transistor 56 and feedback signal Acquisition Circuit 59 ground connection respectively, the second collection terminal of feedback signal Acquisition Circuit 59 is connected with constant current output negative terminal, and the signal output part of feedback signal Acquisition Circuit 59 is connected with feedback circuit 71.
Above-mentioned feedback signal Acquisition Circuit 59 can adopt resistance conversion become voltage or adopt Hall element, is then connected with feedback circuit 71 again.Above-mentioned the first field effect transistor 54 and the second field effect transistor 56 can adopt N channel field-effect pipe or P-channel field-effect transistor (PEFT) pipe.If the first field effect transistor 54 is used N channel field-effect pipe, in the first EFT Drive Unit 53, should comprise the booster circuit with respect to switch current potential.Inductance 57 is preferably high-power inductance, and electric capacity 58 is preferably low ESR electric capacity.The principle of this circuit is: the PWM ripple that pulse-width modulation circuit 31 produces produces the PWM ripple of a single spin-echo after the second inverter 52; And latter two PWM ripple respectively drives the first EFT Drive Unit 53 and the second EFT Drive Unit 55, then the first EFT Drive Unit 53 and the second EFT Drive Unit 55 respectively drive the first field effect transistor 54 to charge (energy storage) to inductance 57 and the second field effect transistor 56 is discharged (release can) to inductance 57, thus through electric capacity 58 smoothly at constant current output anode and constant current output negative terminal output constant current.
Particularly, feedback circuit 71 comprises the first current sense amplifier 72, the first operational amplifier 73 and phase compensating circuit 74, the input of the first current sense amplifier 72 is connected with half-bridge switch circuit 51, the output of the first current sense amplifier 72 is connected with the inverting input of the first operational amplifier 73 and one end of phase compensating circuit 74, the in-phase input end of the first operational amplifier 73 arranges end comparison circuit 10 with electric current and is connected, and the output of the first operational amplifier 73 is connected with phase compensating circuit 74 other ends and pulse-width modulation circuit 31.Phase compensating circuit 74 is controlled gain and the phase compensation of the first operational amplifier 73, forms negative feedback, makes the first operational amplifier 73 energy steady operations.The first current sense amplifier 72 is for amplifying feedback signal.
Above the specific implementation circuit of pulse-width modulation circuit 31, half-bridge switch circuit 51 and feedback circuit 71 can be combined and be used to reach the output of constant current, but also can modify to a certain partial circuit or whole circuit wherein to those skilled in the art.To on the basis of the combination of three circuit above-mentioned, be described in detail below.
As shown in Figure 7, for the convenient control whether constant current is exported, driving power 1 of the present utility model also comprises power control terminal, pulse-width modulation circuit 31 also comprises or gate cell 38, the output of second voltage comparator 36 be specially being connected of set end of trigger 37: the output of second voltage comparator 36 with or the first input end of gate cell 38 be connected, or being connected of the set end of the output of gate cell 38 and trigger 37; Or the second input of gate cell 38 is connected with power control terminal.In the time that power control terminal is high level, or gate cell 38 is output as high level, and by direct set flip-flop 37, making its reversed-phase output is low level, thereby closes the first EFT Drive Unit 53, thereby closes the output of constant current.
For fear of the situation that occurs that electric current is excessive; feedback circuit 71 comprises error protection circuit 75; the first input end of error protection circuit 75 is connected with the output of the first current sensor 72, the output of error protection circuit 75 with or the 3rd input of gate cell 38 be connected.When error protection circuit 75 is excessive for exporting at the input terminal voltage of error protection circuit 75, export high level at the output of error protection circuit 75, thereby close the output of constant current, the safety of protection load.
Individual pulse electric current for fear of the first field effect transistor 54 is excessive; feedback circuit 71 comprises the second current sense amplifier 76; the second 76 two of current sense amplifiers input is connected with source electrode and the drain electrode of the first effect pipe 54 respectively, and the output of the second current sense amplifier 76 is connected with the second input of error protection circuit 75.When the first field effect transistor 54 individual pulse electric currents are when excessive; can correspondingly there is the situation that output voltage is excessive in the second current sense amplifier 76; error protection circuit 75 detects rear output high level, drives 53 output, thereby close the first field effect transistor 54 thereby close the first field effect transistor.
On the basis of the driving power shown in Fig. 7, below operation principle and using method to driving power describe.
In the time will using this driving power, first putting power control terminal is low level.The voltage that then preheat curent arranges end is set to make pump laser diode to be about to produce Laser output or has just produced weak laser output, in the time of laser shutdown, operating current arranges end and is prohibited (voltage is set to zero), the voltage that end is set due to preheat curent arranges the voltage of end higher than operating current, electric current arranges end comparison circuit 10 and enables voltage that preheat curent arranges end to pulse-width modulation circuit 31, the voltage that pulse-width modulation circuit 31 arranges end according to preheat curent produces corresponding PWM ripple, PWM ripple drives half-bridge switch circuit 51 to produce preheating constant current preheating pump laser diode.
In the time that laser is opened, need to make pump laser diode normally export, the voltage that operating current is arranged to end enables, because operating voltage is greater than pre-thermal voltage, electric current arranges end comparison circuit 10 and enables voltage that operating current arranges end to pulse-width modulation circuit 31, the voltage that pulse-width modulation circuit 31 arranges end according to operating current produces corresponding PWM ripple, and PWM ripple drives half-bridge switch circuit 51 to produce the work of work constant current driven pump laser diode.
In the time will closing constant current output, can put power control terminal is high level, can close the output of constant current.
And the utility model also provides a kind of laser of quick startup, laser comprises laser power supply and pump laser diode, laser power supply be used for providing preheat curent to pump laser diode carry out preheating and for provide operating current drive pump laser diode luminous.In the time that laser is not exported, pump laser diode is carried out to preheating, the opening speed of laser is improved greatly.
Particularly, laser power supply of the present utility model can be above-mentioned efficient fast laser pumping driving power.Further, laser is fiber laser or solid state laser.
To sum up, the utility model has improved the opening speed of laser greatly, and meanwhile, the use of preheat curent contributes to reduce the sudden change of drive current overshoot and pump power, thereby extends the useful life of device and system.The constant-current circuit of switching mode of the present utility model has improved power supply conversion efficiency greatly, and energy savings has reduced the heat load of laser system.Meanwhile, by adopting double error protective circuit, guarantee the safety of pump laser diode, improved the reliability of laser system.
Although more than described embodiment of the present utility model; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present utility model; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present utility model, all should be encompassed in the scope that claim of the present utility model protects.
Claims (10)
1. efficient fast laser pumping driving power, described driving power comprises constant current output anode and constant current output negative terminal, it is characterized in that: described driving power comprises that operating current arranges end and preheat curent arranges end, described driving power arranges end while enabling for end or preheat curent are set at operating current, according to the operating current enabling arrange end or preheat curent arrange end be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current, described driving power comprises that electric current arranges end comparison circuit and constant-current circuit, described electric current arranges end comparison circuit and is connected with constant-current circuit, described electric current arranges end comparison circuit and operating current and end and preheat curent are set arrange to hold and be connected, described constant-current circuit is connected with constant current output anode and constant current output negative terminal, described electric current arranges that end comparison circuit arranges end for operating current relatively and preheat curent arranges the setting of end and enables wherein one end, and the setting of the one end enabling is outputed to constant-current circuit, described constant-current circuit for arrange according to electric current end comparison circuit input be arranged on constant current output anode and constant current output negative terminal is exported corresponding electric current.
2. efficient fast laser pumping driving power according to claim 1, it is characterized in that: what described operating current arranged that end and preheat curent arrange end is set to voltage setting, described electric current arranges end comparison circuit and comprises the first voltage comparator, the first described voltage comparator and operating current arrange end and preheat curent and end is set is connected, and the first described voltage comparator arranges and holds and preheat curent arranges the voltage swing of end and enables wherein one end for comparing operating current.
3. efficient fast laser pumping driving power according to claim 2, it is characterized in that: described electric current arranges end comparison circuit and also comprises the first inverter, the one N channel field-effect pipe and the 2nd N channel field-effect pipe, described preheat curent arranges end and is connected with the in-phase input end of the first voltage comparator and the drain electrode of a N channel field-effect pipe, described operating current arranges end and is connected with the inverting input of the first voltage comparator and the drain electrode of the 2nd N channel field-effect pipe, the output of the first described voltage comparator is connected with a grid for N channel field-effect pipe and the input of the first inverter, the output of described the first inverter is connected with the grid of the 2nd N channel field-effect pipe, the source electrode of described the 2nd N channel field-effect pipe is connected with source electrode and the constant-current circuit of a N channel field-effect pipe.
4. according to the arbitrary described efficient fast laser pumping driving power of claim 1 to 3, it is characterized in that: described constant-current circuit comprises pulse-width modulation circuit, half-bridge switch circuit and feedback circuit, described pulse-width modulation circuit is connected with half-bridge switch circuit and feedback circuit, described half-bridge switch circuit is connected with feedback circuit, described half-bridge switch circuit is connected with constant current output anode and constant current output negative terminal, and described feedback circuit arranges end comparison circuit with electric current and is connected.
5. efficient fast laser pumping driving power according to claim 4, it is characterized in that: described pulse-width modulation circuit comprises saw-toothed wave generator, clock oscillator, the 3rd inverter, with gate cell, second voltage comparator and trigger, the inverting input of described second voltage comparator is connected with feedback circuit, the output of described second voltage comparator is connected with the set end of trigger, the in-phase input end of described second voltage comparator is connected with saw-toothed wave generator, described saw-toothed wave generator is connected with clock oscillator, described clock oscillator is connected with the 3rd input of inverter and the reset terminal of trigger, the output of described the 3rd inverter be connected with the first input end of gate cell, the reversed-phase output of described trigger be connected with the second input of gate cell, describedly be connected with half-bridge switch circuit with the output of gate cell.
6. efficient fast laser pumping driving power according to claim 5, it is characterized in that: described feedback circuit comprises the first current sense amplifier, the first operational amplifier and phase compensating circuit, the input of described the first current sense amplifier is connected with half-bridge switch circuit, the output of described the first current sense amplifier is connected with the inverting input of the first operational amplifier and one end of phase compensating circuit, the in-phase input end of described the first operational amplifier arranges end comparison circuit with electric current and is connected, the output of described the first operational amplifier is connected with the phase compensating circuit other end and pulse-width modulation circuit.
7. efficient fast laser pumping driving power according to claim 6, it is characterized in that: described half-bridge switch circuit comprises the second inverter, the first EFT Drive Unit, the first field effect transistor, the second EFT Drive Unit, the second field effect transistor, inductance, electric capacity and feedback signal Acquisition Circuit, the input of the second described inverter is connected with the first input end of pulse-width modulation circuit and the first EFT Drive Unit respectively, the output of described the second inverter is connected with the second input of the second EFT Drive Unit, the second input of the first described EFT Drive Unit is connected with the grid of the output of the second EFT Drive Unit and the second field effect transistor, the output of the first described EFT Drive Unit is connected with the grid of the first input end of the second EFT Drive Unit and the first field effect transistor, the drain electrode of described the first field effect transistor is connected with power supply, the source electrode of described the first field effect transistor is connected with the drain electrode of one end of inductance and the second field effect transistor, the other end of described inductance is connected with one end of electric capacity and constant current output anode, the other end of described electric capacity, the first collection terminal of the source electrode of the second field effect transistor and feedback signal Acquisition Circuit ground connection respectively, the second collection terminal of described feedback signal Acquisition Circuit is connected with constant current output negative terminal, the signal output part of described feedback signal Acquisition Circuit is connected with feedback circuit,
The output of described the first current sense amplifier is connected with the inverting input of the first operational amplifier and one end of phase compensating circuit, the in-phase input end of described the first operational amplifier arranges end comparison circuit with electric current and is connected, and the output of described the first operational amplifier is connected with the phase compensating circuit other end and pulse-width modulation circuit.
8. efficient fast laser pumping driving power according to claim 7; it is characterized in that: described feedback circuit comprises error protection circuit; the first input end of described error protection circuit is connected with the output of the first current sensor, the output of described error protection circuit with or the 3rd input of gate cell be connected.
9. efficient fast laser pumping driving power according to claim 8; it is characterized in that: described feedback circuit comprises the second current sense amplifier; two inputs of described the second current sense amplifier are connected with source electrode and the drain electrode of the first effect pipe respectively, and the output of described the second current sense amplifier is connected with the second input of error protection circuit.
10. the laser starting fast, is characterized in that: described laser power supply is the arbitrary described efficient fast laser pumping driving power of claim 1 to 9; Described laser is fiber laser or solid state laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710865.8U CN203596499U (en) | 2013-11-12 | 2013-11-12 | High-efficiency quick laser-pumped driving power supply and quick start laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710865.8U CN203596499U (en) | 2013-11-12 | 2013-11-12 | High-efficiency quick laser-pumped driving power supply and quick start laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596499U true CN203596499U (en) | 2014-05-14 |
Family
ID=50677358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710865.8U Withdrawn - After Issue CN203596499U (en) | 2013-11-12 | 2013-11-12 | High-efficiency quick laser-pumped driving power supply and quick start laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647213A (en) * | 2013-11-12 | 2014-03-19 | 福建中科光汇激光科技有限公司 | Efficient and rapid laser-pumping driving power supply and rapidly started laser device |
| CN106684703A (en) * | 2017-03-08 | 2017-05-17 | 成都优博创通信技术股份有限公司 | TWDM ONU (time wavelength division multiplexing optical network unit) wavelength control method and system thereof and shut-off depth control circuit |
| CN111202911A (en) * | 2019-12-05 | 2020-05-29 | 武汉奇致激光技术股份有限公司 | Picosecond laser therapeutic machine laser output detection and laser termination device and method |
-
2013
- 2013-11-12 CN CN201320710865.8U patent/CN203596499U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647213A (en) * | 2013-11-12 | 2014-03-19 | 福建中科光汇激光科技有限公司 | Efficient and rapid laser-pumping driving power supply and rapidly started laser device |
| CN103647213B (en) * | 2013-11-12 | 2016-04-27 | 福建中科光汇激光科技有限公司 | Efficient fast laser pumping driving power and the laser started fast |
| CN106684703A (en) * | 2017-03-08 | 2017-05-17 | 成都优博创通信技术股份有限公司 | TWDM ONU (time wavelength division multiplexing optical network unit) wavelength control method and system thereof and shut-off depth control circuit |
| CN106684703B (en) * | 2017-03-08 | 2019-12-31 | 成都优博创通信技术股份有限公司 | TWDM ONU wavelength control method and system and turn-off depth control circuit |
| US10775563B2 (en) | 2017-03-08 | 2020-09-15 | Chengdu Superxon Communication Technology Co., Ltd. | TWDM ONU wavelength control method, system thereof and shut- off depth control circuit |
| CN111202911A (en) * | 2019-12-05 | 2020-05-29 | 武汉奇致激光技术股份有限公司 | Picosecond laser therapeutic machine laser output detection and laser termination device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103647213B (en) | Efficient fast laser pumping driving power and the laser started fast | |
| CN103580506B (en) | Switching Power Supply and power supply control chip | |
| CN102957304B (en) | A kind of drive circuit of triode and driving method thereof | |
| CN101951185B (en) | Method for controlling dual buck grid-connected inverter | |
| TW201251289A (en) | Integrated buck/boost converter of charging apparatus | |
| CN103594288A (en) | Relay driving device and driving method thereof | |
| CN103516217B (en) | A kind of Switching Power Supply of adjustable oblique wave compensation slope | |
| CN203596499U (en) | High-efficiency quick laser-pumped driving power supply and quick start laser | |
| CN105553259A (en) | Self power supply control circuit, control method and switching circuit | |
| CN205377786U (en) | Two pressure reducing type photovoltaic power generation system | |
| CN102709976A (en) | Common bus energy-saving recovery type storage battery charging-discharging power supply equipment | |
| CN204046415U (en) | The quick startup control circuit of converter | |
| CN103501114B (en) | There is the anti exciting converter of critical conduction mode | |
| CN203026919U (en) | Input under-voltage protection circuit of photovoltaic inverter power supply | |
| CN203645390U (en) | Charging and discharging circuit used for intelligent photovoltaic LED street lamp | |
| CN202997983U (en) | Integrated dual-motor control system for magnetic-suspension energy-storing flywheel | |
| CN202495761U (en) | Capacitor constant power discharge circuit | |
| CN102075093A (en) | Automatic high-precision voltage-stabilizing output circuit with wide-range input voltage in wide range | |
| CN204068336U (en) | A kind of charging circuit | |
| CN204928194U (en) | Solar photovoltaic power generation system's DC power supply | |
| CN102624057A (en) | Photovoltaic cell control device of photovoltaic power generation system | |
| CN103888033A (en) | Integrated dual-motor control system for magnetic-suspension energy-storing flywheel | |
| CN203574546U (en) | Hardware control system used for DC/DC conversion in proton exchange membrane fuel cell standby power supply system | |
| CN102739133B (en) | Dual-voltage control switch reluctance motor and dual-voltage control drive device thereof | |
| CN103167669A (en) | Light-emitting diode (LED) drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20160427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |