CN205543669U - Drive circuit of big power laser ware - Google Patents
Drive circuit of big power laser ware Download PDFInfo
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- CN205543669U CN205543669U CN201620286246.4U CN201620286246U CN205543669U CN 205543669 U CN205543669 U CN 205543669U CN 201620286246 U CN201620286246 U CN 201620286246U CN 205543669 U CN205543669 U CN 205543669U
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Abstract
The utility model discloses a form that laser drive circuit had adopted two way the same functionality's circuit to establish ties mutually, to high -power laser, required driving voltage is often higher, the difficult design of transformer, secondary device is difficult to select, the utility model discloses a preceding stage adopts the independent circuit of two -stage, inferior cascade connection, and every secondary voltage is relatively low so, is favorable to the transformer design, is favorable to secondary device to be chosen. The input of two way circuit can be for same direct current voltage input, also can be for different direct current voltage input, input voltage can be the same, also may not with, make things convenient for choosing of power. Two way circuit single control, its control phase mutual deviation is 180 degrees, is favorable to secondary filtering, has three voltage sensor at the back, detects the voltage and the overall output voltage of each way output respectively, if damage all the way, does not influence another way output.
Description
Technical field
This utility model relates to the drive circuit of a kind of laser instrument, belongs to photoelectron technical field.
Background technology
The kind of laser instrument has a variety of, as solid state laser, gas laser, semiconductor laser, light
Fibre laser etc..In the middle of these laser instrument, in addition to part semiconductor laser instrument belongs to Direct Current pumping,
Remaining laser instrument is essentially all and carries out pumping by pumping source, especially for powerful laser instrument, needs
Use powerful drive circuit that pumping source is driven, thus produce powerful pump light, but existing
Having in technology and generally be directed to the drive circuit that different laser instrument designs is different, general drive circuit is the most logical
Cross simple change can be adapted on other laser instrument.Further, for the drive circuit of high power laser,
Superpower laser it is generally required to driving voltage the highest, now, transformator be difficult to design, major embodiment
Bad in insulation, greatly, in the problems such as leakage inductance is big, furthermore such circuit, the secondary devices of transformator is or not parasitic capacitance
Easily choose.This utility model puts forward for the problems referred to above just.
Utility model content
According to an embodiment of the present utility model, it is provided that a kind of drive circuit for laser, including first and second
Input, wherein first input end includes positive input terminal vin1+ and negative input end vin1-, and the second input includes
Positive input terminal vin2+ and negative input end vin2-, the primary two of positive input terminal vin1+ connection transformer T1 around
The midpoint of group, this midpoint is the different name end junction point of primary first and second windings, primary first winding and second
The other end of winding connects the drain electrode of field effect transistor mos1 and mos2, resistance R6 and electric capacity C3 string respectively
The drain electrode of MOS1 and the source electrode two ends absorption circuit as mos1, resistance R7 and electric capacity C4 it is connected in parallel on after connection
The drain electrode of MOS2 and the source electrode two ends absorption circuit as mos2 it is connected in parallel on after series connection, mos1's and mos2
Source electrode is all connected to the gate pole of negative input end vin1-, mos1 and mos2 respectively by resistance R10 and R11 even
Receive Micro-processor MCV.The secondary of transformator T1 has two outfans, and one of them outfan connects
The anode of diode D1 and diode D3 negative electrode, other end connects anode and the diode of diode D2
The negative electrode of D4, the negative electrode of diode D1 and D2 is commonly connected to one end of inductance L1, diode D3 and
The anode of D4 is commonly connected to one end and one end of resistance R3 of electric capacity C1, the other end of inductance L1
One end of resistance R2, isolation voltage sensor it is commonly connected to the other end of electric capacity C1 again after being connected
One input of VSEN1 and the anode of IGCT THY1, the negative electrode of IGCT THY1 connects load,
The other end of resistance R2 is connected with the other end of resistance R3, isolation voltage sensor VSEN2 and resistance
R3 is in parallel, and the outfan of isolation voltage sensor VSEN1 and VSEN2 connects Micro-processor MCV respectively；
The midpoint of two windings of primary of positive input terminal vin2+ connection transformer T2, this midpoint is primary first
With the different name end junction point of the second winding, the other end of primary first winding and the second winding connects field effect respectively
Should the drain electrode of pipe mos3 and mos4, be connected in parallel on drain electrode and the source of MOS3 after resistance R8 and electric capacity C5 series connection
Two ends, pole, as the absorption circuit of mos3, are connected in parallel on the drain electrode of MOS4 after resistance R9 and electric capacity C6 series connection
With source electrode two ends as the absorption circuit of mos4, the source electrode of mos3 and mos4 is all connected to negative input end vin2-,
The gate pole of mos3 and mos4 is connected to Micro-processor MCV by resistance R12 and R13 respectively.Transformator
The secondary of T2 has two outfans, and one of them outfan connects anode and the diode D7 of diode D5
Negative electrode, other end connects anode and the negative electrode of diode D8 of diode D6, diode D5's and D7
Negative electrode is commonly connected to one end of inductance L2, and the anode of diode D6 and D8 is commonly connected to electric capacity C2's
One end and one end of resistance R4, the other end of inductance L2 is total to after being connected with the other end of electric capacity C2 again
With being connected to one end of resistance R4, the another one input of isolation voltage sensor VSEN1 and load,
The other end of resistance R4 is connected with the other end of resistance R5, isolation voltage sensor VSEN3 and resistance
R5 is in parallel, and the outfan of isolation voltage sensor VSEN3 connects Micro-processor MCV, meanwhile, electric capacity C1
It is connected in series with C2.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of drive circuit for laser of the present utility model.
Detailed description of the invention
Drive circuit for laser of the present utility model will be described below in detail on the basis of combining accompanying drawing.This practicality
Novel drive circuit for laser particular make-up is as follows:
Including the first and second inputs, wherein first input end includes positive input terminal vin1+ and negative input end
Vin1-, the second input includes positive input terminal vin2+ and negative input end vin2-, and positive input terminal vin1+ connects change
The midpoint of two windings of primary of depressor T1, this midpoint is the different name end junction point of primary first and second windings,
The other end of primary first winding and the second winding connects the drain electrode of field effect transistor mos1 and mos2 respectively,
It is connected in parallel on the drain electrode of MOS1 and source electrode two ends after resistance R6 and electric capacity C3 series connection to return as the absorption of mos1
Road, is connected in parallel on the suction as mos2 of the drain electrode of MOS2 and source electrode two ends after resistance R7 and electric capacity C4 series connection
Regaining road, the source electrode of mos1 and mos2 is all connected to the gate pole of negative input end vin1-, mos1 and mos2 and divides
It is not connected to Micro-processor MCV by resistance R10 and R11.The secondary of transformator T1 has two outputs
End, one of them outfan connects anode and the diode D3 negative electrode of diode D1, and other end connects two
The anode of pole pipe D2 and the negative electrode of diode D4, the negative electrode of diode D1 and D2 is commonly connected to inductance
One end of L1, the anode of diode D3 and D4 is commonly connected to one end of electric capacity C1 and resistance R3
One end, the other end of inductance L1 is commonly connected to resistance R2's after being connected with the other end of electric capacity C1 again
One end, an input of isolation voltage sensor VSEN1 and the anode of IGCT THY1, IGCT
The negative electrode of THY1 connects load, and the other end of resistance R2 is connected with the other end of resistance R3, isolation
Voltage sensor VSEN2 is in parallel with resistance R3, the output of isolation voltage sensor VSEN1 and VSEN2
End connects Micro-processor MCV respectively.
The midpoint of two windings of primary of positive input terminal vin2+ connection transformer T2, this midpoint is primary first
With the different name end junction point of the second winding, the other end of primary first winding and the second winding connects field effect respectively
Should the drain electrode of pipe mos3 and mos4, be connected in parallel on drain electrode and the source of MOS3 after resistance R8 and electric capacity C5 series connection
Two ends, pole, as the absorption circuit of mos3, are connected in parallel on the drain electrode of MOS4 after resistance R9 and electric capacity C6 series connection
With source electrode two ends as the absorption circuit of mos4, the source electrode of mos3 and mos4 is all connected to negative input end vin2-,
The gate pole of mos3 and mos4 is connected to Micro-processor MCV by resistance R12 and R13 respectively.Transformator
The secondary of T2 has two outfans, and one of them outfan connects anode and the diode D7 of diode D5
Negative electrode, other end connects anode and the negative electrode of diode D8 of diode D6, diode D5's and D7
Negative electrode is commonly connected to one end of inductance L2, and the anode of diode D6 and D8 is commonly connected to electric capacity C2's
One end and one end of resistance R4, the other end of inductance L2 is total to after being connected with the other end of electric capacity C2 again
With being connected to one end of resistance R4, the another one input of isolation voltage sensor VSEN1 and load,
The other end of resistance R4 is connected with the other end of resistance R5, isolation voltage sensor VSEN3 and resistance
R5 is in parallel, and the outfan of isolation voltage sensor VSEN3 connects Micro-processor MCV, meanwhile, electric capacity C1
It is connected in series with C2.
According to above-mentioned circuit design, it can be seen that drive circuit for laser of the present utility model have employed two-way
The form that the circuit that function is identical is in series, for superpower laser, required driving voltage is the highest,
Transformator is difficult to design, and secondary devices is not easy to choose, and this utility model uses prime to use the electricity of two-stage independence
Road, secondary tandem, then each secondary voltage is relatively low, beneficially design of transformer, be conducive to secondary device
Part is chosen.The input of two-way circuit can be the input of same DC voltage, it is also possible to input for different DC voltages,
Input voltage can be identical, it is also possible to different, facilitates choosing of power supply.Two-way circuit individually controls, and it controls
Phase place mutual deviation 180 degree, be conducive to secondary filtering, after have three voltage sensors, detect respectively each road output
Voltage and overall output voltage, if a path loss is bad, do not affect another road output.
Its work process approximately as: for one of them circuit, mos3 and mos4 alternate conduction,
MCU detects output voltage, then according to the driving pulse width of detection voltage-regulation mos pipe, thus reaches
The purpose of regulation output voltage, constitutes feedback circuit.
Claims (1)
- null1. a drive circuit for laser，Including the first and second inputs，Wherein first input end includes positive input terminal vin1+ and negative input end vin1-，Second input includes positive input terminal vin2+ and negative input end vin2-，Two windings of primary of positive input terminal vin1+ connection transformer T1，The other end of primary first winding and the second winding connects the drain electrode of field effect transistor mos1 and mos2 respectively，The drain electrode of MOS1 and the source electrode two ends absorption circuit as mos1 it is connected in parallel on after resistance R6 and electric capacity C3 series connection，The drain electrode of MOS2 and the source electrode two ends absorption circuit as mos2 it is connected in parallel on after resistance R7 and electric capacity C4 series connection，The source electrode of mos1 and mos2 is all connected to negative input end vin1-，The gate pole of mos1 and mos2 is connected to Micro-processor MCV by resistance R10 and R11 respectively，The secondary of transformator T1 has two outfans，One of them outfan connects anode and the diode D3 negative electrode of diode D1，Other end connects anode and the negative electrode of diode D4 of diode D2，The negative electrode of diode D1 and D2 is commonly connected to one end of inductance L1，The anode of diode D3 and D4 is commonly connected to one end and one end of resistance R3 of electric capacity C1，The other end of inductance L1 is commonly connected to one end of resistance R2 again with the other end of electric capacity C1 after being connected、One input of isolation voltage sensor VSEN1 and the anode of IGCT THY1，The negative electrode of IGCT THY1 connects load，The other end of resistance R2 is connected with the other end of resistance R3，Isolation voltage sensor VSEN2 is in parallel with resistance R3，The outfan of isolation voltage sensor VSEN1 and VSEN2 connects Micro-processor MCV respectively；nullTwo windings of primary of positive input terminal vin2+ connection transformer T2，The other end of primary first winding and the second winding connects the drain electrode of field effect transistor mos3 and mos4 respectively，The drain electrode of MOS3 and the source electrode two ends absorption circuit as mos3 it is connected in parallel on after resistance R8 and electric capacity C5 series connection，The drain electrode of MOS4 and the source electrode two ends absorption circuit as mos4 it is connected in parallel on after resistance R9 and electric capacity C6 series connection，The source electrode of mos3 and mos4 is all connected to negative input end vin2-，The gate pole of mos3 and mos4 is connected to Micro-processor MCV by resistance R12 and R13 respectively，The secondary of transformator T2 has two outfans，One of them outfan connects anode and the diode D7 negative electrode of diode D5，Other end connects anode and the negative electrode of diode D8 of diode D6，The negative electrode of diode D5 and D7 is commonly connected to one end of inductance L2，The anode of diode D6 and D8 is commonly connected to one end and one end of resistance R4 of electric capacity C2，The other end of inductance L2 is commonly connected to one end of resistance R4 again with the other end of electric capacity C2 after being connected、The another one input of isolation voltage sensor VSEN1 and load，The other end of resistance R4 is connected with the other end of resistance R5，Isolation voltage sensor VSEN3 is in parallel with resistance R5，The outfan of isolation voltage sensor VSEN3 connects Micro-processor MCV，Simultaneously，Electric capacity C1 and C2 is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620286246.4U CN205543669U (en) | 2016-04-01 | 2016-04-01 | Drive circuit of big power laser ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620286246.4U CN205543669U (en) | 2016-04-01 | 2016-04-01 | Drive circuit of big power laser ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205543669U true CN205543669U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620286246.4U Expired - Fee Related CN205543669U (en) | 2016-04-01 | 2016-04-01 | Drive circuit of big power laser ware |
Country Status (1)
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| CN (1) | CN205543669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742949A (en) * | 2016-04-01 | 2016-07-06 | 华北电力大学（保定） | High-power laser driving circuit |
-
2016
- 2016-04-01 CN CN201620286246.4U patent/CN205543669U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742949A (en) * | 2016-04-01 | 2016-07-06 | 华北电力大学（保定） | High-power laser driving circuit |
| CN105742949B (en) * | 2016-04-01 | 2018-07-17 | 华北电力大学（保定） | A kind of driving circuit of high power laser |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190401 |