CN205724358U - A kind of full bridge inverter drive circuit for laser - Google Patents
A kind of full bridge inverter drive circuit for laser Download PDFInfo
- Publication number
- CN205724358U CN205724358U CN201620360107.1U CN201620360107U CN205724358U CN 205724358 U CN205724358 U CN 205724358U CN 201620360107 U CN201620360107 U CN 201620360107U CN 205724358 U CN205724358 U CN 205724358U
- Authority
- CN
- China
- Prior art keywords
- igbt3
- inductance
- igbt2
- igbt1
- diode
- 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.)
- Expired - Fee Related
Links
Landscapes
- Inverter Devices (AREA)
Abstract
nullA kind of full bridge inverter drive circuit for laser，Including input，Positive input terminal is connected respectively to one end of electric capacity C1 and the colelctor electrode of insulated-gate type field effect transistor IGBT1 and IGBT3，Negative input end vin is connected respectively to the emitter stage of electric capacity C1 other end and insulated-gate type field effect transistor IGBT2 and IGBT4，IGBT1，IGBT2，IGBT3，The gate pole of IGBT4 is respectively through resistance R1，R2，R4，R5 is connected to Micro-processor MCV，The emitter stage of IGBT3 is connected to one end of current sensor ISEN1 and one end of transformer T1 primary coil，The emitter stage of IGBT1 is connected to one end of inductance L3，The other end of transformer T1 primary coil and the colelctor electrode of IGBT2，The other end of inductance L3 connects the other end of current sensor ISEN1.
Description
Technical field
The utility model relates to the drive circuit of a kind of laser instrument, belongs to photoelectron technical field.
Background technology
The species of laser instrument has a variety of, as solid state laser, gas laser, semiconductor laser, optical fiber laser etc..In the middle of these laser instruments, 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, need to use powerful drive circuit to be driven pumping source, thus produce powerful pump light, but prior art generally is directed to the different drive circuit of different laser instrument designs, general drive circuit seldom can be adapted on other laser instruments by simple change.Further, for the drive circuit of high power laser, superpower laser it is generally required to driving voltage also higher, now, transformer is difficult to design, is mainly reflected in insulation bad, parasitic capacitance is big, the problems such as leakage inductance is big, furthermore in such circuit, the secondary devices of transformer is not easy to choose.The utility model puts forward for the problems referred to above just.
Utility model content
According to an embodiment of the present utility model, provide a kind of full bridge inverter drive circuit for laser, including input, wherein input includes positive input terminal vin+ and negative input end vin-, positive input terminal is connected respectively to one end of electric capacity C1 and the colelctor electrode of insulated-gate type field effect transistor IGBT1 and IGBT3, negative input end vin-is connected respectively to the emitter stage of electric capacity C1 other end and insulated-gate type field effect transistor IGBT2 and IGBT4, IGBT1, IGBT2, the gate pole of IGBT3, IGBT4 is respectively through resistance R1, R2, R4, R5 are connected to Micro-processor MCV.nullThe emitter stage of IGBT3 is connected to one end of current sensor ISEN1 and one end of transformer T1 primary coil，The emitter stage of IGBT1 is connected to one end of inductance L3，The other end of transformer T1 primary coil and the colelctor electrode of IGBT2，The other end of inductance L3 connects the other end of current sensor ISEN1，Two outputs of T1 level of transformer，One output connects the negative electrode of diode D1 and the anode of diode D2，Another one output connects the negative electrode of diode D3 and the anode of diode D4，The anode of D2 and D4 is all connected to one end of inductance L2，The anode of diode D1 and D3 is all connected to one end of DC filter capacitor Cd，The other end of DC filter capacitor Cd is connected to the other end of inductance L2，Output voltage detecting circuit and resistance R3 are all in parallel with DC filter capacitor Cd.The output of the output of output voltage detecting circuit and current sensor ISEN1 is all connected to Micro-processor MCV.One end of resistance R3 is also connected to the anode of controllable silicon SCR, and the negative electrode of SCR is connected to one end of load, and the other end of resistance R3 is also connected to the other end of load.
Brief description
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.Drive circuit for laser particular make-up of the present utility model is as follows:
Including input, wherein input includes positive input terminal vin+ and negative input end vin-, positive input terminal is connected respectively to one end of electric capacity C1 and the colelctor electrode of insulated-gate type field effect transistor IGBT1 and IGBT3, and negative input end vin-is connected respectively to the emitter stage of electric capacity C1 other end and insulated-gate type field effect transistor IGBT2 and IGBT4, IGBT1, IGBT2, the gate pole of IGBT3, IGBT4 is respectively through resistance R1, R2, R4, R5 are connected to Micro-processor MCV.nullThe emitter stage of IGBT3 is connected to one end of current sensor ISEN1 and one end of transformer T1 primary coil，The emitter stage of IGBT1 is connected to one end of inductance L3，The other end of transformer T1 primary coil and the colelctor electrode of IGBT2，The other end of inductance L3 connects the other end of current sensor ISEN1，Two outputs of T1 level of transformer，One output connects the negative electrode of diode D1 and the anode of diode D2，Another one output connects the negative electrode of diode D3 and the anode of diode D4，The anode of D2 and D4 is all connected to one end of inductance L2，The anode of diode D1 and D3 is all connected to one end of DC filter capacitor Cd，The other end of DC filter capacitor Cd is connected to the other end of inductance L2，Output voltage detecting circuit and resistance R3 are all in parallel with DC filter capacitor Cd.The output of the output of output voltage detecting circuit and current sensor ISEN1 is all connected to Micro-processor MCV.One end of resistance R3 is also connected to the anode of controllable silicon SCR, and the negative electrode of SCR is connected to one end of load, and the other end of resistance R3 is also connected to the other end of load.
The utility model is a kind of full bridge inverter drive circuit for laser.Wherein C1 is DC filter capacitor, D1, D2, D3, D4, L2, Cd are output rectifier and filter, and R1, R2, R3, R4 are for driving resistance, and MCU is controller.
Working method is as follows, IGBT3 simultaneously turns on IGBT2, after simultaneously turn off, rear IGBT1 and IGBT4 simultaneously turns on, after simultaneously turn off again, wherein (IGBT3, IGBT2) ON time and (IGBT1, IGBT4) ON time is identical, this ON time is determined by the output voltage needing, during the output voltage height needing, MCU exports (IGBT3, and (IGBT1 IGBT2), IGBT4) driving pulse broadens, when the output voltage of needs is low, MCU exports (IGBT3, and (IGBT1 IGBT2), IGBT4) driving pulse narrows, the purpose of output voltage is reached to control by regulating the width of driving pulse.
Difference due to device parameters in side circuit, the ON time of (IGBT3, IGBT2) and (IGBT1, IGBT4) can not be identical, this can produce a DC component on transformer T1, and it is saturated that this DC component cumulative may result in transformer T1.Solve in Shi Ji this problem can concatenate with T1 capacitance block DC channel, but the method cost intensive.Also in the primary current sensing means that adds of T1, moment detection DC component, thus between moment regulation (IGBT3, IGBT2) and (IGBT1, IGBT4) conducting, can reach to eliminate the purpose of DC component.But owing in general loop, alternating current is very big, and DC component may be less than the 1% of whole electric current, and this little DC component is possible to cause transformer saturated, the current sensing means of whole current range can be detected when detecting little DC component, precision is inadequate, and possible detected at all is less than DC component, and the current sensing means precision of little range is good, but in the case of this big electric current, it is impossible to application.
The utility model is incorporated to inductance L3 at transformer T1 two ends, and on L3, concatenate current sensing means Isen1, the inductance value of L3 is much larger than the inductance value of L1 and the magnetizing inductance of T1, but the DC impedance R of L3 is much smaller than the DC impedance of L1 and the DC impedance of T1, so, alternating current in loop seldom flows through L3, but most DC component can pass through L3, so Isen1 just can use small-range high precision electro flow detection device, accurately measurement DC component size, thus moment regulation (IGBT3, and (IGBT1 IGBT2), IGBT4) ON time reaches to eliminate the purpose of DC component.
Claims (1)
- null1. a full bridge inverter drive circuit for laser，Including input，Wherein input includes positive input terminal vin+ and negative input end vin-，Positive input terminal is connected respectively to one end of electric capacity C1 and the colelctor electrode of insulated-gate type field effect transistor IGBT1 and IGBT3，Negative input end vin-is connected respectively to the emitter stage of electric capacity C1 other end and insulated-gate type field effect transistor IGBT2 and IGBT4，IGBT1，IGBT2，IGBT3，The gate pole of IGBT4 is respectively through resistance R1，R2，R4，R5 is connected to Micro-processor MCV，The emitter stage of IGBT3 is connected to one end of current sensor ISEN1 and one end of transformer T1 primary coil，The emitter stage of IGBT1 is connected to one end of inductance L3，The other end of transformer T1 primary coil and the colelctor electrode of IGBT2，The other end of inductance L3 connects the other end of current sensor ISEN1，Two outputs of T1 level of transformer，One output connects the negative electrode of diode D1 and the anode of diode D2，Another one output connects the negative electrode of diode D3 and the anode of diode D4，The anode of D2 and D4 is all connected to one end of inductance L2，The anode of diode D1 and D3 is all connected to one end of DC filter capacitor Cd，The other end of DC filter capacitor Cd is connected to the other end of inductance L2，Output voltage detecting circuit and resistance R3 are all in parallel with DC filter capacitor Cd，The output of the output of output voltage detecting circuit and current sensor ISEN1 is all connected to Micro-processor MCV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360107.1U CN205724358U (en) | 2016-04-20 | 2016-04-20 | A kind of full bridge inverter drive circuit for laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360107.1U CN205724358U (en) | 2016-04-20 | 2016-04-20 | A kind of full bridge inverter drive circuit for laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205724358U true CN205724358U (en) | 2016-11-23 |
Family
ID=57294294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620360107.1U Expired - Fee Related CN205724358U (en) | 2016-04-20 | 2016-04-20 | A kind of full bridge inverter drive circuit for laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205724358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811233A (en) * | 2016-04-20 | 2016-07-27 | 华北电力大学（保定） | Full-bridge inverter circuit laser driving circuit |
-
2016
- 2016-04-20 CN CN201620360107.1U patent/CN205724358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811233A (en) * | 2016-04-20 | 2016-07-27 | 华北电力大学（保定） | Full-bridge inverter circuit laser driving circuit |
| CN105811233B (en) * | 2016-04-20 | 2019-02-26 | 华北电力大学（保定） | A kind of full bridge inverter laser driving circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102832792B (en) | Source electrode driving control circuit and control method thereof | |
| CN102185466A (en) | Driving circuit and driving method applied to flyback-type converter and quasi-resonant soft-switching flyback-type converter applying same | |
| CN102594155A (en) | Primary edge control type switch power supply with high-precision constant-voltage/constant-current output and high-pulse-frequency (PF) value | |
| CN103825469A (en) | Control circuit for isolated type convertor and isolated type convertor | |
| CN203814013U (en) | LED driving circuit adopting single-end zero crossing detection | |
| KR101215111B1 (en) | Power supply apparatus | |
| CN205724358U (en) | A kind of full bridge inverter drive circuit for laser | |
| CN105680297A (en) | Laser driving circuit of half-bridge/inversion circuit | |
| CN104411035B (en) | A kind of LED drive circuit powered without assists winding | |
| CN103533719A (en) | Triode-based light-emitting diode (LED) current ripple elimination driving circuit | |
| CN106849667B (en) | A kind of primary side feedback constant pressure and flow controller sample circuit | |
| CN105680298B (en) | A kind of Sofe Switch laser driving circuit | |
| CN105811233B (en) | A kind of full bridge inverter laser driving circuit | |
| CN104057181A (en) | Open-phase protection circuit for inverter welding machine | |
| CN205724356U (en) | A kind of soft switching inverting circuit drive circuit for laser | |
| JP6184436B2 (en) | Power circuit for driving creeping discharge elements | |
| CN103533710A (en) | LED (light emitting diode) driver | |
| CN203368305U (en) | Driving circuit of IGBT module power switch | |
| CN103630735A (en) | Voltage slope change detection circuit and method | |
| CN205543670U (en) | Half -bridge inverter circuit laser drive circuit | |
| CN202524299U (en) | Primary edge control type switch power supply with high-precision constant-voltage/constant-current output and high-pulse-frequency (PF) value | |
| CN105680299A (en) | Laser driving circuit of soft-switching inversion circuit | |
| CN104142420A (en) | Transformer secondary winding zero current detecting circuit used for LED driving power source | |
| CN103298204A (en) | Silicon controlled dimming LED lamp driver with open circuit protection function | |
| CN203645895U (en) | Load sampling circuit of non-isolated LED driving circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20161123 Termination date: 20190420 |