CN104409053B - The driving control circuit of onboard navigation system - Google Patents
The driving control circuit of onboard navigation system Download PDFInfo
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- CN104409053B CN104409053B CN201410565549.5A CN201410565549A CN104409053B CN 104409053 B CN104409053 B CN 104409053B CN 201410565549 A CN201410565549 A CN 201410565549A CN 104409053 B CN104409053 B CN 104409053B
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Abstract
The invention discloses the driving control circuit of a kind of onboard navigation system, including DC/DC boost chip, resistance R69, R73, R72, R10, R12, inductance L9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, Zener diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10.The driving control circuit simple in construction of above-mentioned onboard navigation system, cost are relatively low and relatively stable.
Description
Technical field
The present invention relates to a kind of control circuit, particularly to the driving control circuit of a kind 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 more and more stronger to the dependency of Navigation Display Unit when driving.It is said that in general, existing Navigation Display Unit is all that the display screen using giant-screen shows to the instruction of road, driver completes multiple manipulation by operating display.So that whole guider can work, it is required for supporting circuit and Navigation Display Unit is driven and controls.Existing support circuit all uses the control chip of multiple specialty, and circuit structure is complicated, relatively costly, and stability is poor.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved is: provide a kind of simple in construction, cost is relatively low and stability is higher control circuit.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide the driving control circuit of a kind of onboard navigation system, including DC/DC boost chip, resistance R69, R73, R72, R10, R12, inductance L9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, Zener diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10；
The first termination 5V power supply of described inductance L9, the second end is connected with first end of electric capacity EC6, the second end ground connection of described electric capacity EC6；First end of described electric capacity EC6 is also connected with first end of electric capacity C8, the second end ground connection of described electric capacity C8；First end of described electric capacity C8 is also connected with first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip；First end of described resistance R69 also input pin with described DC/DC boost chip is connected；
The feedback pin of described DC/DC boost chip is connected with first end of resistance R72, the second end ground connection of described resistance R72；Described feedback pin is also connected with 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；
Described DC/DC boost chip
Input pin is also connected with first end of inductance L10, second end of described inductance L10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with first end of resistance R73, and second end of described resistance R73 is connected with first end of resistance R72；Described commutation diode D3 also the first end with described electric capacity C21 is connected, described electric capacity C21 ground connection；First end of described electric capacity C21 is also connected with first end of electric capacity C35, the second end ground connection of described electric capacity C35；First end of described electric capacity C35 is also connected with first end of resistance R76, and second end of described resistance R76 is connected with 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 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 on and off switch output pin of described DC/DC boost chip is connected with first end of electric capacity C23, first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with first end of electric capacity C35,3rd end of described switching diode D4 is connected with first end of described electric capacity C25, the second end ground connection of described electric capacity C25；First end of described electric capacity C25 is also connected with first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of Zener diode ZD6, the plus earth of described Zener diode ZD6；The negative electrode of described Zener diode ZD6 is also connected with first end of electric capacity C24, the second end ground connection of described electric capacity C24；First end of described electric capacity C24 is also connected with first end of resistance R12, the second end ground connection of described resistance R12；Described resistance R12 is also connected with first end of electric capacity EC8, the second end ground connection of described electric capacity EC8；First end of described electric capacity EC8 is used for exporting forward voltage；
The on and off switch output pin of described DC/DC boost chip is also connected with first end of electric capacity C22, second end of described electric capacity C22 is also connected with first end of switching diode D5, second end of described switching diode D5 is connected with 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 first end of resistance R75, the second end ground connection of described resistance R75；First end of described resistance R75 also anode with Zener diode ZD1 is connected, the minus earth of described Zener diode ZD1；The anode of described Zener diode ZD1 is also connected with first end of electric capacity C28, the second end ground connection of described electric capacity C28；First end of described electric capacity C28 is also connected with first end of resistance R10, the second end ground connection of described resistance R10；First end of described resistance R10 is connected with first end of electric capacity EC10, the second end ground connection of described electric capacity EC10；First end of described electric capacity EC10 is used for exporting negative voltage.
Further, described switching diode D4 includes the first diode and the second diode, the anode of wherein said first diode and the negative electrode of the second diode are connected and as 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 includes the 3rd diode and the 4th diode, the negative electrode of wherein said 3rd diode and the anode of the 4th diode are connected and as 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 uses MP1540 chip.
In the 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 through diode obtains forward voltage and negative voltage again, and then drives the display screen of rear end to show.A high screen low voltage circuit is operationally must provide for due to liquid crystal display screen.Therefore, Zener diode ZD1 and ZD6 plays the effect of burning voltage.Above-mentioned control circuit simple in construction, cost is relatively low, and can make the stable work of on-vehicle navigation apparatus.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the driving control circuit of onboard navigation system of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
First, before embodiment is described, it is necessary to some herein presented terms are explained.Such as:
If occurring herein using the term such as " first ", " second " to describe various element, but these elements should not limited by these terms.These terms are only used for distinguishing an element and another element.Therefore, " first " element can also be referred to as " second " element without departing from the teachings of the present invention.
In addition, it is to be understood that when mentioning that an element " connects " or during " coupled " to another element, it can be directly connected or be directly coupled to another element or can also there is intermediary element.On the contrary, when mentioning that an element " is directly connected " or " directly coupling " arrives another element, the most there is not intermediary element.
The various terms occurred in this article are used only for describing the purpose of specific embodiment and being not intended as limitation of the invention.Unless context clearly dictates otherwise, then singulative is intended to also include plural form.
When using term " to include " in this manual and/or time " including ", these terms specify the existence of described feature, entirety, step, operation, element and/or parts, but are also not excluded for more than one other feature, entirety, step, operation, element, parts and/or the existence of its group and/or add.
About embodiment:
Referring to Fig. 1, the driving control circuit of the onboard navigation system of the present embodiment includes DC/DC boost chip U1, resistance R69, R73, R72, R10, R12, inductance L9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, Zener diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10.
The first termination 5V power supply of described inductance L9, the second end is connected with first end of electric capacity EC6, the second end ground connection of described electric capacity EC6；First end of described electric capacity EC6 is also connected with first end of electric capacity C8, the second end ground connection of described electric capacity C8；First end of described electric capacity C8 is also connected with first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip U1；First end of described resistance R69 also input pin IN with described DC/DC boost chip U1 is connected.
Described DC/DC boost chip U1 includes that five pins, its feedback pin FB are connected with first end of resistance R72, the second end ground connection of described resistance R72；Its feedback pin FB is also connected with 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；
Described DC/DC boost chip U1
Input pin IN is also connected with first end of inductance L10, second end of described inductance L10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with first end of resistance R73, and second end of described resistance R73 is connected with first end of resistance R72；Described commutation diode D3 also the first end with described electric capacity C21 is connected, described electric capacity C21 ground connection；First end of described electric capacity C21 is also connected with first end of electric capacity C35, the second end ground connection of described electric capacity C35；First end of described electric capacity C35 is also connected with first end of resistance R76, and second end of described resistance R76 is connected with 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 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；
First end of on and off switch output pin SW and the electric capacity C23 of described DC/DC boost chip U1 is connected, first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with first end of electric capacity C35,3rd end of described switching diode D4 is connected with first end of described electric capacity C25, the second end ground connection of described electric capacity C25；First end of described electric capacity C25 is also connected with first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of Zener diode ZD6, the plus earth of described Zener diode ZD6；The negative electrode of described Zener diode ZD6 is also connected with first end of electric capacity C24, the second end ground connection of described electric capacity C24；First end of described electric capacity C24 is also connected with first end of resistance R12, the second end ground connection of described resistance R12；Described resistance R12 is also connected with 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, i.e. exports forward voltage；
The on and off switch output pin of described DC/DC boost chip U1 is also connected with first end of electric capacity C22, second end of described electric capacity C22 is also connected with first end of switching diode D5, second end of described switching diode D5 is connected with 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 first end of resistance R75, the second end ground connection of described resistance R75；First end of described resistance R75 also anode with Zener diode ZD1 is connected, the minus earth of described Zener diode ZD1；The anode of described Zener diode ZD1 is also connected with first end of electric capacity C28, the second end ground connection of described electric capacity C28；First end of described electric capacity C28 is also connected with first end of resistance R10, the second end ground connection of described resistance R10；First end of described resistance R10 is connected with first end of electric capacity EC10, the second end ground connection of described electric capacity EC10；First end of described electric capacity EC10 is also connected with VGL, i.e. exports negative voltage；
In this better embodiment, described switching diode D4 includes two diodes, it is designated as the first diode and the second diode respectively, the anode of wherein said first diode and the negative electrode of the second diode are connected and as 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 includes two diodes, it is designated as the 3rd diode and the 4th diode respectively, the negative electrode of wherein said 3rd diode and the anode of the 4th diode are connected and as 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 uses 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 through diode obtains forward voltage and negative voltage again, and then drives the display screen of rear end to show.A high screen low voltage circuit is operationally must provide for due to liquid crystal display screen.Therefore, Zener diode ZD1 and ZD6 plays the effect of burning voltage.Above-mentioned control circuit simple in construction, cost is relatively low, and can make the stable work of on-vehicle navigation apparatus.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (2)
1. the driving control circuit of an onboard navigation system, it is characterised in that: described control circuit includes DC/DC boost chip, resistance R69, R73, R72, R10, R12, inductance L9, L10, electric capacity C8, C21, C35, C34, C25, C24, C23, C29, C28, commutation diode D3, switching diode D4, D5, Zener diode ZD1, ZD6, electric capacity EC6, EC8, EC9, EC10；
The first termination 5V power supply of described inductance L9, the second end is connected with first end of electric capacity EC6, the second end ground connection of described electric capacity EC6；First end of described electric capacity EC6 is also connected with first end of electric capacity C8, the second end ground connection of described electric capacity C8；First end of described electric capacity C8 is also connected with first end of resistance R69, and second end of described resistance R69 is connected with the enable pin of DC/DC boost chip；First end of described resistance R69 also input pin with described DC/DC boost chip is connected；
The feedback pin of described DC/DC boost chip is connected with first end of resistance R72, the second end ground connection of described resistance R72；Described feedback pin is also connected with 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 input pin of described DC/DC boost chip is connected with first end of inductance L10, second end of described inductance L10 is connected with the anode of commutation diode D3, the negative electrode of described commutation diode D3 is connected with first end of resistance R73, and second end of described resistance R73 is connected with first end of resistance R72；Described commutation diode D3 also the first end with described electric capacity C21 is connected, described electric capacity C21 ground connection；First end of described electric capacity C21 is also connected with first end of electric capacity C35, the second end ground connection of described electric capacity C35；First end of described electric capacity C35 is also connected with first end of resistance R76, and second end of described resistance R76 is connected with 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 first end of electric capacity EC9, the second end ground connection of described electric capacity EC9；The first termination 10V voltage end VDD of described electric capacity EC9；
The on and off switch output pin of described DC/DC boost chip is connected with first end of electric capacity C23, first end of the second termination switching diode D4 of described electric capacity C23, second end of described switching diode D4 is connected with first end of electric capacity C35,3rd end of described switching diode D4 is connected with first end of described electric capacity C25, the second end ground connection of described electric capacity C25；First end of described electric capacity C25 is also connected with first end of resistance R74, and second end of described resistance R74 is connected with the negative electrode of Zener diode ZD6, the plus earth of described Zener diode ZD6；The negative electrode of described Zener diode ZD6 is also connected with first end of electric capacity C24, the second end ground connection of described electric capacity C24；First end of described electric capacity C24 is also connected with first end of resistance R12, the second end ground connection of described resistance R12；Described resistance R12 is also connected with first end of electric capacity EC8, the second end ground connection of described electric capacity EC8；First end of described electric capacity EC8 is used for exporting forward voltage；
The on and off switch output pin of described DC/DC boost chip is also connected with first end of electric capacity C22, second end of described electric capacity C22 is also connected with first end of switching diode D5, second end of described switching diode D5 is connected with 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 first end of resistance R75, the second end ground connection of described resistance R75；First end of described resistance R75 also anode with Zener diode ZD1 is connected, the minus earth of described Zener diode ZD1；The anode of described Zener diode ZD1 is also connected with first end of electric capacity C28, the second end ground connection of described electric capacity C28；First end of described electric capacity C28 is also connected with first end of resistance R10, the second end ground connection of described resistance R10；First end of described resistance R10 is connected with first end of electric capacity EC10, the second end ground connection of described electric capacity EC10；First end of described electric capacity EC10 is used for exporting negative voltage；
Described switching diode D4 includes the first diode and the second diode, the anode of wherein said first diode and the negative electrode of the second diode are connected and as 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 includes the 3rd diode and the 4th diode, the negative electrode of wherein said 3rd diode and the anode of the 4th diode are connected and as 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.
2. the driving control circuit of onboard navigation system as claimed in claim 1, it is characterised in that: described DC/DC boost chip uses 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 |
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| CN201410565549.5A CN104409053B (en) | 2014-10-22 | 2014-10-22 | The driving control circuit of onboard navigation system |
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| CN104409053A CN104409053A (en) | 2015-03-11 |
| CN104409053B true 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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Families Citing this family (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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7256642B2 (en) * | 2004-03-19 | 2007-08-14 | Semiconductor Energy Laboratory Co., Ltd. | Booster circuit, semiconductor device, and electronic apparatus |
| CN100402981C (en) * | 2004-11-24 | 2008-07-16 | 吉林大学 | System for automatically leading vehicle wireless positioning, navigating and controlling |
| 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 |
| 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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