CN104409053A - Drive and control circuit of car navigation system - Google Patents
Drive and control circuit of car navigation system Download PDFInfo
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- CN104409053A CN104409053A CN201410565549.5A CN201410565549A CN104409053A CN 104409053 A CN104409053 A CN 104409053A CN 201410565549 A CN201410565549 A CN 201410565549A CN 104409053 A CN104409053 A CN 104409053A
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Abstract
The invention discloses a drive and control circuit of a car navigation system. The drive and control circuit comprises a DC/DC boost chip, a resistor R69, a resistor R73, a resistor R72, a resistor R10, a resistor R12, an inductor L9, an inductor L10, a capacitor C8, a capacitor C21, a capacitor C35, a capacitor C34, a capacitor C25, a capacitor C24, a capacitor C23, a capacitor C29, a capacitor C28, a rectifier diode D3, a switching diode D4, a switching diode D5, a voltage-regulator diode ZD1, a voltage-regulator diode ZD6, a capacitor EC6, a capacitor EC8, a capacitor EC9 and a capacitor EC10. The drive and control circuit of the car navigation system is simple in structure, low in cost and relatively stable.
Description
Technical field
The present invention relates to a kind of control circuit, particularly a kind of Drive and Control Circuit of onboard navigation system.
Background technology
Along with the development of automotive engineering, the use of Navigation Display Unit is more and more universal, and driver is also more and more stronger to the dependence of Navigation Display Unit when driving.Generally speaking, existing Navigation Display Unit is all adopt the display screen of giant-screen to show to the instruction of road, and driver completes multiple manipulation by operating display.In order to make whole guider to work, supporting circuit is all needed to carry out driving to Navigation Display Unit and control.Existing support circuit all adopts the control chip of multiple specialty, and circuit structure is complicated, and cost is higher, and stability is poor.
Summary of the invention
For above-mentioned the deficiencies in the prior art, technical matters to be solved by this invention is: provide that a kind of structure is simple, cost is lower and the control circuit that stability is higher.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the Drive and Control Circuit providing a kind of onboard navigation system, comprises DC/DC boost chip, resistance R69, R73, R72, R10, R12, inductance L 9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, voltage stabilizing diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10;
First termination 5V power supply of described inductance L 9, the second end is connected with the first end of electric capacity EC6, the second end ground connection of described electric capacity EC6; The first end of described electric capacity EC6 is also connected with the first end of electric capacity C8, the second end ground connection of described electric capacity C8; The first end of described electric capacity C8 is also connected with the first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip; The first end of described resistance R69 is also connected with the input pin of described DC/DC boost chip;
The feedback pin of described DC/DC boost chip is connected with the first end of resistance R72, the second end ground connection of described resistance R72; Described feedback pin is also connected with the first end of electric capacity C13, the second end ground connection of described electric capacity C13; The grounding pin ground connection of described DC/DC boost chip;
The grounding pin of described DC/DC boost chip is also connected with the first end of inductance L 10, second end of described inductance L 10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with the first end of resistance R73, and second end of described resistance R73 is connected with the first end of resistance R72; Described commutation diode D3 is also connected with the first end of described electric capacity C21, described electric capacity C21 ground connection; The first end of described electric capacity C21 is also connected with the first end of electric capacity C35, the second end ground connection of described electric capacity C35; The first end of described electric capacity C35 is also connected with the first end of resistance R76, and second end of described resistance R76 is connected with the first end of electric capacity C34, the second end ground connection of described electric capacity C34; Second end of described resistance R76 is also connected with the first end of electric capacity EC9, the second end ground connection of described electric capacity EC9; The first termination VDD10V of described electric capacity EC9;
The power switch output pin of described DC/DC boost chip is connected with the first end of electric capacity C23, the first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with the first end of electric capacity C35,3rd end of described switching diode D4 is connected with the first end of described electric capacity C25, the second end ground connection of described electric capacity C25; The first end of described electric capacity C25 is also connected with the first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of voltage stabilizing diode ZD6, the plus earth of described voltage stabilizing diode ZD6; The negative electrode of described voltage stabilizing diode ZD6 is also connected with the first end of electric capacity C24, the second end ground connection of described electric capacity C24; The first end of described electric capacity C24 is also connected with the first end of resistance R12, the second end ground connection of described resistance R12; Described resistance R12 is also connected with the first end of electric capacity EC8, the second end ground connection of described electric capacity EC8; The first end of described electric capacity EC8 is for exporting forward voltage;
The power switch output pin of described DC/DC boost chip is also connected with the first end of electric capacity C22, second end of described electric capacity C22 is also connected with the first end of switching diode D5, second end of described switching diode D5 is connected with the first end of electric capacity C29, the second end ground connection of described electric capacity C29; The 3rd end ground connection of described switching diode D5.Described electric capacity C29 is also connected with the first end of resistance R75, the second end ground connection of described resistance R75; The first end of described resistance R75 is also connected with the anode of voltage stabilizing diode ZD1, the plus earth of described voltage stabilizing diode ZD1; The anode of described voltage stabilizing diode ZD1 is also connected with the first end of electric capacity C28, the second end ground connection of described electric capacity C28; The first end of described electric capacity C28 is also connected with the first end of resistance R10, the second end ground connection of described resistance R10; The first end of described resistance R10 is connected with the first end of electric capacity EC10, the second end ground connection of described electric capacity EC10; The first end of described electric capacity EC10 is for exporting negative voltage.
Further, described switching diode D4 comprises the first diode and the second diode, the anode of wherein said first diode is connected with the negative electrode of the second diode and as the first end of switching diode D4, the negative electrode of described first diode is as the 3rd end of switching diode D4, and the anode of described second diode is as second end of switching diode D4.
Further, described switching diode D5 comprises the 3rd diode and the 4th diode, the negative electrode of wherein said 3rd diode is connected with the anode of the 4th diode and as the first end of switching diode D5, the anode of described 3rd diode is as second end of switching diode D5, and the negative electrode of described 4th diode is as the 3rd end of switching diode D5.
More specifically, described DC/DC boost chip adopts MP1540 chip.
In circuit of the present invention, the 5V low pressure of input is vibrated by MP1540 chip and peripheral cell and is obtained alternating current.Forward and reverse ballast again through diode obtains forward voltage and negative voltage, and then drives the display screen of rear end to show.Because liquid crystal display operationally must provide a high screen low voltage circuit.Therefore, voltage stabilizing diode ZD1 and ZD6 plays the effect of burning voltage.Above-mentioned control circuit structure is simple, and cost is lower, and the work that on-vehicle navigation apparatus can be made stable.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the Drive and Control Circuit of onboard navigation system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
First, before embodiment is described, be necessary that some terms to occurring make an explanation herein.Such as:
Use the term such as " first ", " second " to describe various element if occur herein, but these elements should not limited by these terms.These terms are only used for differentiation element and another element.Therefore, " first " element also can be called as " second " element and not depart from instruction of the present invention.
In addition, should be understood that, when mentioning an element " connection " or " connection " to another element, it can directly connect or directly be connected to another element or also can there is intermediary element.On the contrary, when mentioning that an element " directly connection " or " directly connecting " are to another element, then there is not intermediary element.
The various terms occurred in this article are only not intended to as limitation of the invention for describing the object of concrete embodiment.Unless context is clearly pointed out in addition, then singulative intention also comprises plural form.
" comprise " when using term in this manual and/or " including " time, these terms specify the existence of described feature, entirety, step, operation, element and/or parts, but also do not get rid of more than one other features, entirety, step, operation, element, the existence of parts and/or its group and/or additional.
About embodiment:
Refer to Fig. 1, the Drive and Control Circuit of the onboard navigation system of the present embodiment comprises DC/DC boost chip U1, resistance R69, R73, R72, R10, R12, inductance L 9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, voltage stabilizing diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10.
First termination 5V power supply of described inductance L 9, the second end is connected with the first end of electric capacity EC6, the second end ground connection of described electric capacity EC6; The first end of described electric capacity EC6 is also connected with the first end of electric capacity C8, the second end ground connection of described electric capacity C8; The first end of described electric capacity C8 is also connected with the first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip U1; The first end of described resistance R69 is also connected with the input pin IN of described DC/DC boost chip U1.
Described DC/DC boost chip U1 comprises five pins, and its feedback pin FB is connected with the first end of resistance R72, the second end ground connection of described resistance R72; Its feedback pin FB is also connected with the first end of electric capacity C13, the second end ground connection of described electric capacity C13;
The grounding pin GND ground connection of described DC/DC boost chip U1;
The grounding pin GND of described DC/DC boost chip U1 is also connected with the first end of inductance L 10, second end of described inductance L 10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with the first end of resistance R73, and second end of described resistance R73 is connected with the first end of resistance R72; Described commutation diode D3 is also connected with the first end of described electric capacity C21, described electric capacity C21 ground connection; The first end of described electric capacity C21 is also connected with the first end of electric capacity C35, the second end ground connection of described electric capacity C35; The first end of described electric capacity C35 is also connected with the first end of resistance R76, and second end of described resistance R76 is connected with the first end of electric capacity C34, the second end ground connection of described electric capacity C34; Second end of described resistance R76 is also connected with the first end of electric capacity EC9, the second end ground connection of described electric capacity EC9; The first termination VDD10V of described electric capacity EC9;
The power switch output pin SW of described DC/DC boost chip U1 is connected with the first end of electric capacity C23, the first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with the first end of electric capacity C35,3rd end of described switching diode D4 is connected with the first end of described electric capacity C25, the second end ground connection of described electric capacity C25; The first end of described electric capacity C25 is also connected with the first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of voltage stabilizing diode ZD6, the plus earth of described voltage stabilizing diode ZD6; The negative electrode of described voltage stabilizing diode ZD6 is also connected with the first end of electric capacity C24, the second end ground connection of described electric capacity C24; The first end of described electric capacity C24 is also connected with the first end of resistance R12, the second end ground connection of described resistance R12; Described resistance R12 is also connected with the first end of electric capacity EC8, the second end ground connection of described electric capacity EC8; The first termination VGH of described electric capacity EC8, namely exports forward voltage;
The power switch output pin of described DC/DC boost chip U1 is also connected with the first end of electric capacity C22, second end of described electric capacity C22 is also connected with the first end of switching diode D5, second end of described switching diode D5 is connected with the first end of electric capacity C29, the second end ground connection of described electric capacity C29; The 3rd end ground connection of described switching diode D5.Described electric capacity C29 is also connected with the first end of resistance R75, the second end ground connection of described resistance R75; The first end of described resistance R75 is also connected with the anode of voltage stabilizing diode ZD1, the plus earth of described voltage stabilizing diode ZD1; The anode of described voltage stabilizing diode ZD1 is also connected with the first end of electric capacity C28, the second end ground connection of described electric capacity C28; The first end of described electric capacity C28 is also connected with the first end of resistance R10, the second end ground connection of described resistance R10; The first end of described resistance R10 is connected with the first end of electric capacity EC10, the second end ground connection of described electric capacity EC10; The first end of described electric capacity EC10 also connects VGL, namely exports negative voltage;
In this better embodiment, described switching diode D4 comprises two diodes, be designated as the first diode and the second diode respectively, the anode of wherein said first diode is connected with the negative electrode of the second diode and as the first end of switching diode D4, the negative electrode of described first diode is as the 3rd end of switching diode D4, and the anode of described second diode is as second end of switching diode D4.
Described switching diode D5 comprises two diodes, be designated as the 3rd diode and the 4th diode respectively, the negative electrode of wherein said 3rd diode is connected with the anode of the 4th diode and as the first end of switching diode D5, the anode of described 3rd diode is as second end of switching diode D5, and the negative electrode of described 4th diode is as the 3rd end of switching diode D5.
The embodiment of the present invention, described DC/DC boost chip U1 adopts MP1540 chip, and the 5V low pressure of input is vibrated by MP1540 chip and peripheral cell and obtained alternating current.Forward and reverse ballast again through diode obtains forward voltage and negative voltage, and then drives the display screen of rear end to show.Because liquid crystal display operationally must provide a high screen low voltage circuit.Therefore, voltage stabilizing diode ZD1 and ZD6 plays the effect of burning voltage.Above-mentioned control circuit structure is simple, and cost is lower, and the work that on-vehicle navigation apparatus can be made stable.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. a Drive and Control Circuit for onboard navigation system, is characterized in that: described control circuit comprises DC/DC boost chip, resistance R69, R73, R72, R10, R12, inductance L 9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, voltage stabilizing diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10;
First termination 5V power supply of described inductance L 9, the second end is connected with the first end of electric capacity EC6, the second end ground connection of described electric capacity EC6; The first end of described electric capacity EC6 is also connected with the first end of electric capacity C8, the second end ground connection of described electric capacity C8; The first end of described electric capacity C8 is also connected with the first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip; The first end of described resistance R69 is also connected with the input pin of described DC/DC boost chip;
The feedback pin of described DC/DC boost chip is connected with the first end of resistance R72, the second end ground connection of described resistance R72; Described feedback pin is also connected with the first end of electric capacity C13, the second end ground connection of described electric capacity C13; The grounding pin ground connection of described DC/DC boost chip;
The grounding pin of described DC/DC boost chip is also connected with the first end of inductance L 10, second end of described inductance L 10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with the first end of resistance R73, and second end of described resistance R73 is connected with the first end of resistance R72; Described commutation diode D3 is also connected with the first end of described electric capacity C21, described electric capacity C21 ground connection; The first end of described electric capacity C21 is also connected with the first end of electric capacity C35, the second end ground connection of described electric capacity C35; The first end of described electric capacity C35 is also connected with the first end of resistance R76, and second end of described resistance R76 is connected with the first end of electric capacity C34, the second end ground connection of described electric capacity C34; Second end of described resistance R76 is also connected with the first end of electric capacity EC9, the second end ground connection of described electric capacity EC9; The first termination VDD10V of described electric capacity EC9;
The power switch output pin of described DC/DC boost chip is connected with the first end of electric capacity C23, the first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with the first end of electric capacity C35,3rd end of described switching diode D4 is connected with the first end of described electric capacity C25, the second end ground connection of described electric capacity C25; The first end of described electric capacity C25 is also connected with the first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of voltage stabilizing diode ZD6, the plus earth of described voltage stabilizing diode ZD6; The negative electrode of described voltage stabilizing diode ZD6 is also connected with the first end of electric capacity C24, the second end ground connection of described electric capacity C24; The first end of described electric capacity C24 is also connected with the first end of resistance R12, the second end ground connection of described resistance R12; Described resistance R12 is also connected with the first end of electric capacity EC8, the second end ground connection of described electric capacity EC8; The first end of described electric capacity EC8 is for exporting forward voltage;
The power switch output pin of described DC/DC boost chip is also connected with the first end of electric capacity C22, second end of described electric capacity C22 is also connected with the first end of switching diode D5, second end of described switching diode D5 is connected with the first end of electric capacity C29, the second end ground connection of described electric capacity C29; The 3rd end ground connection of described switching diode D5;
Described electric capacity C29 is also connected with the first end of resistance R75, the second end ground connection of described resistance R75; The first end of described resistance R75 is also connected with the anode of voltage stabilizing diode ZD1, the plus earth of described voltage stabilizing diode ZD1; The anode of described voltage stabilizing diode ZD1 is also connected with the first end of electric capacity C28, the second end ground connection of described electric capacity C28; The first end of described electric capacity C28 is also connected with the first end of resistance R10, the second end ground connection of described resistance R10; The first end of described resistance R10 is connected with the first end of electric capacity EC10, the second end ground connection of described electric capacity EC10; The first end of described electric capacity EC10 is for exporting negative voltage.
2. the Drive and Control Circuit of onboard navigation system as claimed in claim 1, it is characterized in that: described switching diode D4 comprises the first diode and the second diode, the anode of wherein said first diode is connected with the negative electrode of the second diode and as the first end of switching diode D4, the negative electrode of described first diode is as the 3rd end of switching diode D4, and the anode of described second diode is as second end of switching diode D4.
3. the Drive and Control Circuit of onboard navigation system as claimed in claim 1, it is characterized in that: described switching diode D5 comprises the 3rd diode and the 4th diode, the negative electrode of wherein said 3rd diode is connected with the anode of the 4th diode and as the first end of switching diode D5, the anode of described 3rd diode is as second end of switching diode D5, and the negative electrode of described 4th diode is as the 3rd end of switching diode D5.
4. the Drive and Control Circuit of onboard navigation system as claimed in claim 1, is characterized in that: described DC/DC boost chip adopts MP1540 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410565549.5A CN104409053B (en) | 2014-10-22 | 2014-10-22 | The driving control circuit of onboard navigation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410565549.5A CN104409053B (en) | 2014-10-22 | 2014-10-22 | The driving control circuit of onboard navigation system |
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| CN104409053A true CN104409053A (en) | 2015-03-11 |
| CN104409053B CN104409053B (en) | 2016-08-17 |
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| CN201410565549.5A Expired - Fee Related CN104409053B (en) | 2014-10-22 | 2014-10-22 | The driving control circuit of onboard navigation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107623440A (en) * | 2017-09-27 | 2018-01-23 | 上海玮舟微电子科技有限公司 | Voltage conversion circuit and power supply switch circuit |
| CN109742942A (en) * | 2019-01-28 | 2019-05-10 | 北京汇能精电科技股份有限公司 | A kind of beautifully adorned volt circuit |
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| US20090058509A1 (en) * | 2004-03-19 | 2009-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Booster Circuit, Semiconductor Device, and Electronic Apparatus |
| CN201608642U (en) * | 2010-01-19 | 2010-10-13 | 上海迦美信芯通讯技术有限公司 | Power supply management device of navigation radio frequency chip |
| CN204215702U (en) * | 2014-10-22 | 2015-03-18 | 重庆金宏汽车电子有限公司 | For driving the control circuit of on-vehicle navigation apparatus |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090058509A1 (en) * | 2004-03-19 | 2009-03-05 | Semiconductor Energy Laboratory Co., Ltd. | Booster Circuit, Semiconductor Device, and Electronic Apparatus |
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| CN200997263Y (en) * | 2006-10-21 | 2007-12-26 | 中国电子科技集团公司第三十八研究所 | Liquid-crystal display driving system |
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| CN104409053B (en) | 2016-08-17 |
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