CN200966023Y - A laser power supply circuit - Google Patents
A laser power supply circuit Download PDFInfo
- Publication number
- CN200966023Y CN200966023Y CN 200620134079 CN200620134079U CN200966023Y CN 200966023 Y CN200966023 Y CN 200966023Y CN 200620134079 CN200620134079 CN 200620134079 CN 200620134079 U CN200620134079 U CN 200620134079U CN 200966023 Y CN200966023 Y CN 200966023Y
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- power supply
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Abstract
The utility model discloses a laser power supply circuit, which comprises a transformer, a current sampling circuit, a double drive PWM controller, and a drive circuit as well as a voltage reactive circuit. The double drive PWM control chip controls two backward circuits, wherein the switches of the two circuits are 180 degrees of error phases, having the pulsating current at the original side of the two backwards mutually balanced out. And the two backward circuits are matched with two transformers, and make the output sides of the two transformers connect in series, wherein each transformer only outputs half the current, thus reducing the transformer output stage winding coil number. As the chosen double drive PWM chip is in the specification of LM 5032, occupying large space, thus further reducing the transformer output stage winding coil number. The utility model is characterized in that the output side winding coil number is reduced on the transformer design, thereby overcoming the excessively large original side pulsating current defect and improving the power supply electromagnetic compatibility, thus satisfying the demands of high output voltage and small output current laser power supply, which can be widely applied to the other power supply circuits.
Description
Technical field
The utility model relates to a kind of power circuit, specifically, relates to a kind of power circuit that is applied to laser.
Background technology
At present, the general employing of the power supply of laser equipment instead swashed topological circuit, and its output voltage is about 1000V.But the pulsating current of anti-sharp topology is bigger, and electromagnetic disturbance is more serious.And because the output voltage height, the number of turn that the output winding of transformer needs is more, and the pale pinkish purple parasitic parameter effect of turn-to-turn is bad, brings many difficulties to design.How can on design of transformer, reduce the output side winding number of turn as far as possible, overcome the excessive defective of former limit pulsating current, improve the electromagnetic compatibility characteristic of power supply,, go back neither one solution preferably so far to satisfy the needs of output voltage height, Laser Power Devices that output current is little.
The utility model content
A kind of laser power supply circuit that the utility model designs in order to solve the problems of the technologies described above just.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of laser power supply circuit comprises transformer, current sampling circuit, two driving PWM controller, drive circuit and voltage feedback circuit.The input positive source is connected to the former limit of transformer T1 and T2 simultaneously with the inscription end by inductance L 1, the different inscription end in the former limit of transformer T1 and T2 connects the drain electrode of metal-oxide-semiconductor Q1 and Q2 respectively; The source electrode of Q1 and Q2 links to each other with separately current sampling circuit respectively, and is connected to two inputs of the two PWM of driving controllers, and two outputs of two driving PWM controllers link to each other with the grid of Q1 and Q2 respectively by drive circuit separately; The secondary of transformer T1 and T2 links to each other with the positive pole of diode D1, D2 respectively with the inscription end, and capacitor C 2 is connected across the negative pole of diode D1 and the different inscription end of secondary of transformer T1, and capacitor C 3 is connected across the negative pole of diode D2 and the different inscription end of secondary of transformer T2; The negative pole of the different inscription end of the secondary of transformer T1 and diode D2 is the limit mutually; Voltage feedback circuit is connected across the negative pole of diode D1 and the different inscription end of secondary of transformer T2, and the output of voltage feedback circuit links to each other with an input of two driving PWM controllers.
The capacitor C 1 of described a kind of laser power supply circuit is connected across between the output and power supply ground of inductance L 1, strobes.
The pwm chip of two drivings is controlled two circuit of reversed excitation, and switch misphase 180 degree of two circuit are cancelled each other the pulsating current on two anti-former limits of swashing.Because two circuit of reversed excitation are arranged, so two transformers are arranged, their outlet side is together in series, each only exports the voltage of half.To reduce transformer output stage umber of turn.In order further to reduce the output number of turn, should select bigger duty ratio as far as possible, general two duty ratio maximums that drive the every limit of PWM chip have only 50%.Selected the chip LM5032 of NS company in the final design for use, every phase maximum duty cycle is the highest can reach 80% for it.
The beneficial effects of the utility model are: this power circuit has reduced the output side winding number of turn on design of transformer, overcome the excessive defective of former limit pulsating current, greatly improve the electromagnetic compatibility characteristic of power supply, can satisfy the needs of output voltage height, Laser Power Devices that output current is little.Because its output voltage height, instantaneous power is big, volume ratio is less, Electro Magnetic Compatibility is good, can extensively be generalized in the application of other power circuit.
Description of drawings
Fig. 1 is the utility model schematic block circuit diagram.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, a kind of laser power supply circuit of the utility model comprises transformer, current sampling circuit, two driving PWM controller, drive circuit and voltage feedback circuit.The input positive source is connected to the former limit of transformer T1 and T2 simultaneously with the inscription end by inductance L 1, the different inscription end in the former limit of transformer T1 and T2 connects the drain electrode of metal-oxide-semiconductor Q1 and Q2 respectively; The source electrode of Q1 and Q2 links to each other with separately current sampling circuit respectively, and is connected to two inputs of the two PWM of driving controllers, and two outputs of two driving PWM controllers link to each other with the grid of Q1 and Q2 respectively by drive circuit separately; The secondary of transformer T1 and T2 links to each other with the positive pole of diode D1, D2 respectively with the inscription end, and capacitor C 2 is connected across the negative pole of diode D1 and the different inscription end of secondary of transformer T1, and capacitor C 3 is connected across the negative pole of diode D2 and the different inscription end of secondary of transformer T2; The negative pole of the different inscription end of the secondary of transformer T1 and diode D2 is the limit mutually; Voltage feedback circuit is connected across the negative pole of diode D1 and the different inscription end of secondary of transformer T2, and the output of voltage feedback circuit links to each other with an input of two driving PWM controllers.Capacitor C 1 is connected across between the output and power supply ground of inductance L 1, strobes.The two in force pwm chips that drive of this circuit are selected the chip LM5032 of NS company for use, inductance L 1 is selected 744324015 of Wu Erte company for use, transformer T1 and T2 select the magnetic material of 7: 98 no-load voltage ratio 798 4H of factory type 17.3*9.65*6.35 specifications for use, metal-oxide-semiconductor Q1 and Q2 select the IRFS38N20D PBF of IR company for use, diode D1, D2 select the BYV26C series connection of 3 Philips respectively for use, and capacitor C 1, C2 and C3 select 60uF/50V, 56nF/1000V and 56nF/1000V respectively for use.
The utility model is not limited to above-mentioned preferred forms, and other any identical with the utility model or akin products that anyone draws under enlightenment of the present utility model all drop within the protection range of the present utility model.
Claims (2)
1, a kind of laser power supply circuit comprises transformer, current sampling circuit, two driving PWM controller, drive circuit and voltage feedback circuit; It is characterized in that: the input positive source is connected to the different inscription end in former limit of transformer 1 (T1) and transformer 2 (T2) simultaneously by inductance (L1), and same inscription the in the former limit of transformer 1 (T1) and transformer 2 (T2) held the drain electrode that connects metal-oxide-semiconductor 1 (Q1) and metal-oxide-semiconductor 2 (Q2) respectively; The source electrode of metal-oxide-semiconductor 1 (Q1) and metal-oxide-semiconductor 2 (Q2) links to each other with separately current sampling circuit respectively, and being connected to pair two inputs that drive the PWM controllers, two outputs of two driving PWM controllers link to each other with the grid of metal-oxide-semiconductor 1 (Q1) with metal-oxide-semiconductor 2 (Q2) respectively by drive circuit separately; The secondary of transformer 1 (T1) and transformer 2 (T2) links to each other with the positive pole of diode 1 (D1) with diode 2 (D2) respectively with the inscription end, electric capacity 2 (C2) is connected across the negative pole of diode 1 (D1) and the different inscription end of secondary of transformer 1 (T1), and electric capacity 3 (C3) is connected across the negative pole of diode 2 (D2) and the different inscription end of secondary of transformer 2 (T2); The negative pole of the different inscription end of the secondary of transformer 1 (T1) and diode 2 (D2) is the limit mutually; Voltage feedback circuit is connected across the negative pole of diode 1 (D1) and the different inscription end of secondary of transformer 2 (T2), and the output of voltage feedback circuit links to each other with the control end of two driving PWM controllers.
2, a kind of laser power supply circuit according to claim 1 is characterized in that: electric capacity 1 (C1) is connected across between the output and power supply ground of inductance (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134079 CN200966023Y (en) | 2006-10-16 | 2006-10-16 | A laser power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134079 CN200966023Y (en) | 2006-10-16 | 2006-10-16 | A laser power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200966023Y true CN200966023Y (en) | 2007-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620134079 Expired - Lifetime CN200966023Y (en) | 2006-10-16 | 2006-10-16 | A laser power supply circuit |
Country Status (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227137B (en) * | 2007-11-16 | 2011-05-18 | 吴壬华 | Integrated implementation circuit for outputting inductance magnetism parallel operating based on alternate phase |
| CN103096601A (en) * | 2013-01-25 | 2013-05-08 | 海林火地电气科技有限公司 | Light emitting diode (LED) power self-adaptive driver |
| CN103973122A (en) * | 2014-04-28 | 2014-08-06 | 中国船舶重工集团公司第七二三研究所 | Small ripple switching mode power supply |
| CN104350686A (en) * | 2012-06-15 | 2015-02-11 | 高通股份有限公司 | Powerline communication diversity coupling technique |
| CN104578733A (en) * | 2015-02-04 | 2015-04-29 | 四川英杰电气股份有限公司 | Low ripple output method of tandem high-voltage DC power source |
| CN109742925A (en) * | 2018-12-25 | 2019-05-10 | 大族激光科技产业集团股份有限公司 | Laser control apparatus, system and method |
| WO2022143496A1 (en) * | 2020-12-31 | 2022-07-07 | 维沃移动通信有限公司 | Charger |
-
2006
- 2006-10-16 CN CN 200620134079 patent/CN200966023Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227137B (en) * | 2007-11-16 | 2011-05-18 | 吴壬华 | Integrated implementation circuit for outputting inductance magnetism parallel operating based on alternate phase |
| CN104350686A (en) * | 2012-06-15 | 2015-02-11 | 高通股份有限公司 | Powerline communication diversity coupling technique |
| CN104350686B (en) * | 2012-06-15 | 2017-05-24 | 高通股份有限公司 | Powerline communication diversity coupling technique |
| CN103096601A (en) * | 2013-01-25 | 2013-05-08 | 海林火地电气科技有限公司 | Light emitting diode (LED) power self-adaptive driver |
| CN103096601B (en) * | 2013-01-25 | 2015-03-18 | 海林火地电气科技有限公司 | Light emitting diode (LED) power self-adaptive driver |
| CN103973122A (en) * | 2014-04-28 | 2014-08-06 | 中国船舶重工集团公司第七二三研究所 | Small ripple switching mode power supply |
| CN104578733A (en) * | 2015-02-04 | 2015-04-29 | 四川英杰电气股份有限公司 | Low ripple output method of tandem high-voltage DC power source |
| CN109742925A (en) * | 2018-12-25 | 2019-05-10 | 大族激光科技产业集团股份有限公司 | Laser control apparatus, system and method |
| WO2022143496A1 (en) * | 2020-12-31 | 2022-07-07 | 维沃移动通信有限公司 | Charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING SUPLET CO., LTD. Free format text: FORMER NAME: BEIJING XINLEINENG CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 102200, room 285, block B, No. 9, front road, Changping District science and Technology Park, Beijing Patentee after: Beijing Suplet Co., Ltd. Address before: 100096 Beijing city Xisanqi xinleineng road building Patentee before: Beijing Xinleineng Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071024 |
|
| EXPY | Termination of patent right or utility model |