CN103916006A - Drive circuit of inductive device - Google Patents
Drive circuit of inductive device Download PDFInfo
- Publication number
- CN103916006A CN103916006A CN201410138165.5A CN201410138165A CN103916006A CN 103916006 A CN103916006 A CN 103916006A CN 201410138165 A CN201410138165 A CN 201410138165A CN 103916006 A CN103916006 A CN 103916006A
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- transformation module
- voltage transformation
- drive circuit
- 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.)
- Granted
Links
- 230000001939 inductive effect Effects 0.000 title abstract 3
- 230000009466 transformation Effects 0.000 claims description 33
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 230000003111 delayed effect Effects 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a drive circuit of an inductive device. The drive circuit of the inductive device comprises a DC-DC voltage conversion module, a feedback circuit and an output circuit connected with the output end of the DC-DC voltage conversion module. The output end of the output circuit serves as the output end of the drive circuit. The feedback circuit comprises a bleeder circuit arranged between the output end of the output circuit and a ground wire and a gain adjusting resistor arranged between the output end of the bleeder circuit and the feedback input end of the DC-DC voltage conversion module. The output end of the bleeder circuit is connected with one end of a constraint adjusting resistor and the other end of the constraint adjusting resistor is connected with a low-pass filtering circuit and/or an electric level constraint adjusting circuit in parallel, the input end of the low-pass filtering circuit is used for being connected with pulse width modulation signals, the control end of the electric level constraint adjusting circuit is connected with a delayed shutoff circuit, and the control end of the delayed shutoff circuit is used for being connected with on-off control signals. The drive circuit is particularly suitable for driving an electromagnet.
Description
Technical field
The present invention relates to a kind of drive circuit, refer more particularly to a kind of drive circuit perceptual devices such as electromagnet.
Background technology
At present, the drive circuit of the perceptual devices such as traditional electromagnet, it is relatively simple for structure, conventionally only included output circuit (conventionally being formed by metal-oxide-semiconductor), the input of output circuit is for the control signal of access control magnet switching, and the output of output circuit is connected with the control end of electromagnet coil.Insider knows, when electromagnet starts, needs larger electric current, to guarantee the mechanical action of electromagnet, therefore needs high voltage (for the electromagnet that is 12V for rated operational voltage, starting resistor is not less than 10.4V conventionally); But, after electromagnet puts in place, only need less electric current just can make electromagnet keep attracting state, at this moment, conventionally only need less maintenance voltage (being conventionally not less than 3V).Because above-mentioned drive circuit only plays the effect of opening and cutting out, output voltage is non-adjustable, makes its electromagnet that can only be applied to same operating voltage, has seriously restricted its scope of application; And in order to guarantee to guarantee the mechanical action of electromagnet, its output voltage is higher, makes the power consumption of whole drive circuit higher.
Summary of the invention
Technical problem to be solved by this invention is: the drive circuit that the adjustable perceptual device of a kind of output voltage is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of drive circuit of perceptual device, comprise: DC-DC voltage transformation module, feedback circuit and the output circuit being connected with the output of DC-DC voltage transformation module, the output of output circuit is as the output of described drive circuit, described feedback circuit comprises: be arranged on the bleeder circuit between output and the ground wire of output circuit, the output of bleeder circuit is connected with the feedback input end of DC-DC voltage transformation module, the output of bleeder circuit is connected with and forces adjusting resistance is that bleeder circuit output is connected with the one end of forcing adjusting resistance, force the other end of adjusting resistance and be connected to low-pass filter circuit and/or level pressure Circuit tuning, the input of low-pass filter circuit is used for accessing pulse-width signal, on the control end of level pressure Circuit tuning, be connected with delay closing circuit, the control end of delay closing circuit is used for accessing break-make control signal.
The control signal of the Enable Pin of described DC-DC voltage transformation module is as access break-make control signal, i.e. the control end short circuit of the Enable Pin of described DC-DC voltage transformation module and delay closing circuit.
The output of described bleeder circuit is connected with the feedback input end of DC-DC voltage transformation module by gain-adjusted resistance.
Described output circuit comprises: be arranged on the outputting inductance between output and the described drive circuit output of DC-DC voltage transformation module and be attempted by the output filter capacitor on drive circuit output and ground wire.
Described level forces Circuit tuning to comprise: second switch pipe, and the control end of second switch pipe is connected with the output of delay closing circuit, and the output of second switch pipe is connected with the other end of described pressure adjusting resistance.
Described delay closing circuit comprises: the first switching tube, the output of the first switching tube is connected with the control end of second switch pipe as the output of delay closing circuit, on the control end of the first switching tube and ground wire and be connected to delay capacitor and discharge resistance, between the control end of the first switching tube and the incoming end of break-make control signal, be provided with charging current limiter resistance.
Described DC-DC voltage transformation module is buck DC-DC voltage transformation module.
The invention has the beneficial effects as follows: the present invention was by dynamically changing the pulse-width signal of access afterwards the PWM pattern of the output valve of bleeder circuit through low-pass filter circuit, with the electromagnet of coupling different operating voltage, or force Circuit tuning to change the I/0 pattern of the output valve of bleeder circuit by delay closing circuit and level, avoid electromagnet to work long hours under large current-mode, thereby reduce power consumption, effectively prevent the phenomenon of the overheated overcurrent of electromagnet coil, in the time adopting PWM pattern and I/0 pattern simultaneously, compatibility and the reliability of whole drive circuit are improved, further, the state that can change DC-DC voltage transformation module Enable Pin turn-offs DC-DC voltage transformation module, and it is quit work, and further reduces power consumption, in addition,, because output circuit has adopted outputting inductance and output filter capacitor, make the voltage of output more reliable and more stable, in addition, due to the Enable Pin of DC-DC voltage transformation module and the control end short circuit of delay closing circuit, thereby reduce Data Control line, made this drive unit and being connected of external control chip compacter and reliable.
Accompanying drawing explanation
Fig. 1 is the electric theory structure schematic diagram of drive circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail as an example of drive magnet (its coil is as L1) example:
As shown in Figure 1, a kind of drive circuit of perceptual device, comprise: buck DC-DC voltage transformation module U1 (model is MP1470), feedback circuit and the output circuit being connected with the output SW (2 pin) of DC-DC voltage transformation module U1, the output of output circuit is as the output VCC_COIL of described drive circuit, this output circuit comprises: be arranged on the outputting inductance L2 between output SW and the described drive circuit output VCC_COIL of DC-DC voltage transformation module U1, and be attempted by the output filter capacitor being formed in parallel by the second capacitor C 2 and the 3rd capacitor C 3 on drive circuit output VCC_COIL and ground wire GND, described feedback circuit comprises: the output that is arranged on output circuit be the bleeder circuit between output VCC_COIL and the ground wire GND of described drive circuit and be arranged on the output of bleeder circuit and the feedback input end FB (4 pin) of DC-DC voltage transformation module U1 between gain-adjusted resistance R 10, this bleeder circuit comprises: the upper divider resistance being made up of the first resistance R 1 being cascaded and the 8th resistance R 8, the lower divider resistance being formed by the second resistance R 2 being serially connected and the 6th resistance R 6, the output of bleeder circuit is gone up, the junction (connecting place of the 8th resistance R 8 and the second resistance R 2) of lower divider resistance is connected with pressure adjusting resistance, this pressure adjusting resistance is in series by the 7th resistance R 7 and the 9th resistance R 9, the 7th one end of resistance R 7 and the output of bleeder circuit are connected, the other end of the 7th resistance R 7 is connected with one end of the 9th resistance R 9, the other end (incoming end) of the 9th resistance R 9 is also connected to low-pass filter circuit and level pressure Circuit tuning, described low-pass filter circuit comprises: as the 12 resistance R 12 of filter resistance with as the 13 capacitor C 13 of filter capacitor, the input of the low-pass filter circuit i.e. input of the 12 resistance R 12 is used for accessing pulse-width signal, the output of the 12 resistance R 12 is connected with the other end (incoming end) of described the 9th resistance R 9, one end of the 13 described capacitor C 13 is connected with the output of the 12 resistance R 12, other end ground connection, described level forces Circuit tuning to comprise: as the triode Q20 (model is 2SC945) of second switch pipe, the control end of triode Q20 is that its base stage is connected with delay closing circuit, the output of triode Q20 is that its collector electrode is connected with the other end (incoming end) of described the 9th resistance R 9, and the grounded emitter of triode Q20 is earth connection GND, described delay closing circuit comprises: as the triode Q2 (model is 2SC945) of the first switching tube, the control end that is attempted by delay closing circuit be on the base stage of triode Q2 and ground wire GND as the first capacitor C 1 of delay capacitor with as the 3rd resistance R 3 of discharge resistance, and be serially connected in the 4th resistance R 4 as charging current limiter resistance between the base stage of triode Q2 and the incoming end EN_COIL of break-make control signal, the 4th resistance R 4 is also multiplexed with the base stage current-limiting resistance of triode Q2, the output of triode Q2 is that its collector electrode is that its base stage is connected with the control end of triode Q20, the grounded emitter of triode Q2 is earth connection GND.In the present embodiment, the control signal of the Enable Pin EN (5 pin) of described DC-DC voltage transformation module U1 is as access break-make control signal, the i.e. short circuit of the Enable Pin EN of described DC-DC voltage transformation module U1 and the incoming end EN_COIL of break-make control signal.
Operation principle of the present invention is: in the time adopting I/O pattern, external control circuit sending control signal (high level) is given to the Enable Pin EN of DC-DC voltage transformation module U1, make U1 work, be given to delay closing circuit simultaneously, at this moment, EN_COIL sets high, because the both end voltage of electric capacity can not be suddenlyd change, triode Q2 can not conducting, triode Q20 is in conducting state, entering feedback control loop by the 9th resistance R 9 and the 7th resistance R 7 regulates, make the higher voltage of U1 output, meanwhile, by the 4th resistance R 4, the first capacitor C 1 is charged, triode Q2 conducting when the first capacitor C 1 voltage rises to about 0.7V, at this moment, the base voltage of triode Q20 is dragged down, triode Q20 cut-off, exiting feedback control loop regulates, make the lower voltage of U1 output.When in PWM pattern, the pwm signal that outside is sent here is delivered to the 9th resistance R 9 by low-pass filter circuit, and enters feedback control loop adjusting by the 9th resistance R 9 and the 7th resistance R 7, dynamically changes feedback voltage, makes U1 export corresponding voltage.
Compatibility of the present invention is strong, both can be operated under PWM pattern, can be operated in again under I/O pattern, controls very flexibly, may be used on the different occasions such as Industry Control, door lock control, switch control.
In sum, it is only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equivalent variations and modifications of doing according to the shape described in the claims in the present invention scope, structure, feature and spirit, all should be included within the scope of claim of the present invention.
Claims (10)
1. the drive circuit of a perceptual device, comprise: DC-DC voltage transformation module, feedback circuit and the output circuit being connected with the output of DC-DC voltage transformation module, the output of output circuit is as the output of described drive circuit, it is characterized in that, described feedback circuit comprises: be arranged on the bleeder circuit between output and the ground wire of output circuit, the output of bleeder circuit is connected with the feedback input end of DC-DC voltage transformation module, the output of bleeder circuit is connected with and forces adjusting resistance is that bleeder circuit output is connected with the one end of forcing adjusting resistance, force the other end of adjusting resistance and be connected to low-pass filter circuit and/or level pressure Circuit tuning, the input of low-pass filter circuit is used for accessing pulse-width signal, on the control end of level pressure Circuit tuning, be connected with delay closing circuit, the control end of delay closing circuit is used for accessing break-make control signal.
2. the drive circuit of perceptual device according to claim 1, is characterized in that: the control end short circuit of the Enable Pin of described DC-DC voltage transformation module and delay closing circuit.
3. the drive circuit of perceptual device according to claim 1, is characterized in that: the output of described bleeder circuit is connected with the feedback input end of DC-DC voltage transformation module by gain-adjusted resistance.
4. according to the drive circuit of the perceptual device described in claim 1,2 or 3, it is characterized in that: described output circuit comprises: be arranged on the outputting inductance between output and the described drive circuit output of DC-DC voltage transformation module and be attempted by the output filter capacitor on drive circuit output and ground wire.
5. according to the drive circuit of the perceptual device described in claim 1,2 or 3, it is characterized in that: described level forces Circuit tuning to comprise: second switch pipe, the control end of second switch pipe is connected with the output of delay closing circuit, and the output of second switch pipe is connected with the other end of described pressure adjusting resistance.
6. the drive circuit of perceptual device according to claim 5, it is characterized in that: described delay closing circuit comprises: the first switching tube, the output of the first switching tube is connected with the control end of second switch pipe as the output of delay closing circuit, on the control end of the first switching tube and ground wire and be connected to delay capacitor and discharge resistance, between the control end of the first switching tube and the incoming end of break-make control signal, be provided with charging current limiter Shen sun.
7. according to the drive circuit of the perceptual device described in claim 1,2 or 3, it is characterized in that: described DC-DC voltage transformation module is buck DC-DC voltage transformation module.
8. the drive circuit of perceptual device according to claim 4, is characterized in that: described DC-DC voltage transformation module is buck DC-DC voltage transformation module.
9. the drive circuit of perceptual device according to claim 5, is characterized in that: described DC-DC voltage transformation module is buck DC-DC voltage transformation module.、
10. the drive circuit of perceptual device according to claim 6, is characterized in that: described DC-DC voltage transformation module is buck DC-DC voltage transformation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138165.5A CN103916006B (en) | 2014-04-08 | 2014-04-08 | A kind of drive circuit of perceptual device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138165.5A CN103916006B (en) | 2014-04-08 | 2014-04-08 | A kind of drive circuit of perceptual device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103916006A true CN103916006A (en) | 2014-07-09 |
| CN103916006B CN103916006B (en) | 2016-08-17 |
Family
ID=51041465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138165.5A Active CN103916006B (en) | 2014-04-08 | 2014-04-08 | A kind of drive circuit of perceptual device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103916006B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052193A (en) * | 2018-01-02 | 2018-05-18 | 上海市共进通信技术有限公司 | Power switch sequence circuit |
| CN109900877A (en) * | 2019-03-18 | 2019-06-18 | 浙江水利水电学院 | Water quality detection wireless sensing and display node |
| CN112444801A (en) * | 2019-09-05 | 2021-03-05 | 株式会社东芝 | Distance measuring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6313616B1 (en) * | 2000-09-21 | 2001-11-06 | Home Touch Lighting Systems Llc | Switching buck converter with floating regulator |
| CN202758589U (en) * | 2012-04-17 | 2013-02-27 | 中兴通讯股份有限公司 | Drive circuit and mobile terminal |
| CN103068096A (en) * | 2011-10-21 | 2013-04-24 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) lamp, current sampling circuit and drive circuit of LED lamp |
| CN202907294U (en) * | 2012-10-31 | 2013-04-24 | 昂宝电子（上海）有限公司 | DC-to-DC constant-current driving circuit |
| CN202907295U (en) * | 2012-10-31 | 2013-04-24 | 昂宝电子（上海）有限公司 | DC-to-DC constant-current driving circuit |
| CN203276794U (en) * | 2013-05-13 | 2013-11-06 | 深圳麦格米特电气股份有限公司 | Television LED backlight drive circuit |
| CN203339941U (en) * | 2013-06-09 | 2013-12-11 | 广东明阳龙源电力电子有限公司 | Single-chip dual-channel MOSFET drive circuit with hardware over-current protection |
-
2014
- 2014-04-08 CN CN201410138165.5A patent/CN103916006B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6313616B1 (en) * | 2000-09-21 | 2001-11-06 | Home Touch Lighting Systems Llc | Switching buck converter with floating regulator |
| CN103068096A (en) * | 2011-10-21 | 2013-04-24 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) lamp, current sampling circuit and drive circuit of LED lamp |
| CN202758589U (en) * | 2012-04-17 | 2013-02-27 | 中兴通讯股份有限公司 | Drive circuit and mobile terminal |
| CN202907294U (en) * | 2012-10-31 | 2013-04-24 | 昂宝电子（上海）有限公司 | DC-to-DC constant-current driving circuit |
| CN202907295U (en) * | 2012-10-31 | 2013-04-24 | 昂宝电子（上海）有限公司 | DC-to-DC constant-current driving circuit |
| CN203276794U (en) * | 2013-05-13 | 2013-11-06 | 深圳麦格米特电气股份有限公司 | Television LED backlight drive circuit |
| CN203339941U (en) * | 2013-06-09 | 2013-12-11 | 广东明阳龙源电力电子有限公司 | Single-chip dual-channel MOSFET drive circuit with hardware over-current protection |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052193A (en) * | 2018-01-02 | 2018-05-18 | 上海市共进通信技术有限公司 | Power switch sequence circuit |
| CN109900877A (en) * | 2019-03-18 | 2019-06-18 | 浙江水利水电学院 | Water quality detection wireless sensing and display node |
| CN112444801A (en) * | 2019-09-05 | 2021-03-05 | 株式会社东芝 | Distance measuring device |
| CN112444801B (en) * | 2019-09-05 | 2024-02-06 | 株式会社东芝 | Distance measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103916006B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103066836B (en) | Switching power supply circuit and control method thereof | |
| CN101645655B (en) | Quasi-resonance controlled switch voltage stabilizing circuit and method | |
| CN104319983B (en) | A kind of source driving method, drive circuit and Switching Power Supply being used in Switching Power Supply | |
| CN103096599B (en) | Device and method of light emitting diode (LED) dimming driving | |
| CN104980024A (en) | Current equalizing circuit and control method thereof | |
| CN104467373A (en) | LED drive circuit and switching power controller thereof | |
| CN203136220U (en) | Electromagnetic heating device | |
| CN204349778U (en) | LED drive circuit and switch power controller thereof | |
| CN105356746A (en) | Conduction time generation circuit for power supply converter, and power supply converter | |
| CN104283422A (en) | Boost conversion circuit and drive control module thereof | |
| CN208241569U (en) | The circuit quickly released is opened and powered off to a kind of powered on based on metal-oxide-semiconductor realization slow | |
| CN103916006A (en) | Drive circuit of inductive device | |
| CN201113788Y (en) | A power protection circuit | |
| CN110401334A (en) | Timesharing electrical control circuit and high-voltage drive | |
| CN106879125B (en) | A kind of LED adjusting control circuits | |
| CN201994046U (en) | Driving circuit and liquid crystal television | |
| CN105094274B (en) | Switching Power Supply frequency setting circuit, method and electronic equipment | |
| CN201430530Y (en) | Step-down converting circuit | |
| CN104393755A (en) | High-efficiency booster circuit | |
| CN203014679U (en) | Improved fault safe DC-DC power supply equipment | |
| CN206640829U (en) | Low voltage difference output current overshoot suppression circuit | |
| CN204131483U (en) | Low-loss hyper tape isolated drive circuit | |
| CN208675582U (en) | A kind of Novel blood pressure-reducing type LED power circuit | |
| CN205105097U (en) | Voltage boosting circuit | |
| CN203588791U (en) | Drive circuit of electromagnetic coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190802 Address after: 215000 Jiangsu Province Zhangjiagang Free Trade Zone International Automobile City 208 Jiangsu Galaxy Tongzhi New Energy Technology Co., Ltd. Patentee after: JIANGSU YINHE TONGZHI NEW ENERGY TECHNOLOGY CO.,LTD. Address before: 215611 Jiangsu Yinhe Electronics Co., Ltd. No. 188 Nanhuan Road, Tangqiao Town, Zhangjiagang City, Jiangsu Province Patentee before: JIANGSU YINHE ELECTRONICS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240717 Address after: 215600 No.188, South Ring Road, Tangqiao town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: JIANGSU YINHE ELECTRONICS Co.,Ltd. Country or region after: China Address before: 215000 Jiangsu Galaxy Tongzhi New Energy Technology Co., Ltd., No. 208, Zhangjiagang Free Trade Zone International Automobile City, Suzhou City, Jiangsu Province Patentee before: JIANGSU YINHE TONGZHI NEW ENERGY TECHNOLOGY CO.,LTD. Country or region before: China |
|
| TR01 | Transfer of patent right |