CN105591412A - Mobile power source adaption device - Google Patents
Mobile power source adaption device Download PDFInfo
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- CN105591412A CN105591412A CN201410558186.2A CN201410558186A CN105591412A CN 105591412 A CN105591412 A CN 105591412A CN 201410558186 A CN201410558186 A CN 201410558186A CN 105591412 A CN105591412 A CN 105591412A
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Abstract
The invention relates to a mobile power source adaption device. The mobile power source adaption device includes a storage battery and an adaption circuit connected with the storage battery; the adaption circuit includes a DCDC voltage-boosting module which boosts the voltage of the storage battery to 7V, a first LDO voltage-stabilization module which stabilizes the output voltage of the storage battery at 3.3V, a second LDO voltage-stabilization module which stabilizes the output voltage of the storage battery at 2.5V, a third LDO voltage-stabilization module which stabilizes the output voltage of the DCDC voltage-boosting module at 5V, and a fourth LDO voltage-stabilization module which stabilizes the output voltage of the first LDO voltage-stabilization module at 1.2V; and filtering modules are designed between any two connected modules. The mobile power source adaption device of the invention can adapt the output voltage of the storage battery to a variety of kinds of different voltage output, support power supply of most types of electronic products and satisfy power supply requirements of special circuits; the mobile power source adaption device filters the output of the storage battery and realizes voltage-stabilized output, so that outputted power source signals are stable; the mobile power source adaption device can satisfy power source signal input requirements of precision circuits; and the mobile power source adaption device has the advantages of high universality, small noise and the like.
Description
Technical field
The present invention relates to power technique fields, particularly, relate to a kind of portable power source adaptive device.
Background technology
Along with developing rapidly of computer, electronic technology, various portable entertainment, the communication products such as mobile phone, panel computer are come into people's daily life gradually, are playing the part of very important role, and more and more hommization and intellectuality. But, along with development intelligent, screen enlarging trend, these products have shown drawback gradually---and power supply cannot meet long-time use needs, because the volume of these products is little, also volume and the electrical power storage amount of its battery have been limited, therefore the situation that often occurs power-off, in the case, portable power source arises at the historic moment.
Portable power source is by electronic product dc source input interface directly to product power supply or charging, generally also to make charging precious. Generally by lithium cell or this dry cell as charge storage unit. Be different from the battery of interiors of products configuration, also hand over externally hanging battery. The energy conversion rate of portable power source, in 70 ~ 75% left and right, can be given the application such as mobile phone, notebook, digital camera, has solved the powerup issue of electronic product. But different electronic products has different input powers, this just requires portable power source to have certain versatility, and the power supply of directly exporting due to battery is unstable, can not directly supply with some precision circuits and use.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of portable power source adaptive device, and this portable power source adaptive device has adapter circuit, for battery provides the output of multiple different voltages, highly versatile.
The present invention addresses the above problem adopted technical scheme:
Portable power source adaptive device, the adapter circuit that comprises battery, is connected with battery, described adapter circuit comprise by the output voltage of battery boost to the DCDC boost module of 7V, by the output voltage voltage stabilizing of battery a LDO Voltage stabilizing module of 3.3V, by the output voltage voltage stabilizing of battery the 2nd LDO Voltage stabilizing module of 2.5V, by the output voltage voltage stabilizing of DCDC boost module at the 3rd LDO Voltage stabilizing module of a LDO Voltage stabilizing module of 5V, the 4th LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V.
As a further improvement on the present invention, between a described LDO Voltage stabilizing module and accumulator output end, be connected with between the first filtration module, the 2nd LDO Voltage stabilizing module and accumulator output end and be connected with between the second filtration module, DCDC boost module and accumulator output end and be connected with the 3rd filtration module, between described the 3rd LDO Voltage stabilizing module and DCDC boost module, be connected with between the 4th filtration module, a described LDO Voltage stabilizing module and the 4th LDO Voltage stabilizing module and be connected with the 5th filtration module.
Preferably, the electric capacity that electric capacity that described the first filtration module is 0.01 microfarad by an inductance, 1 capacitance, 1 capacitance are 0.1 microfarad forms, and inductance one end connects the output of battery, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a LDO Voltage stabilizing module, other end ground connection.
Preferably, the circuit structure of described the second filtration module, the 5th filtration module is identical with the first filtration module.
Preferably, the 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of DCDC boost module, other end ground connection; Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of the 3rd LDO Voltage stabilizing module, other end ground connection.
Preferably, described DCDC boost module adopts LT1930ES5 chip; A described LDO Voltage stabilizing module, the 3rd LDO Voltage stabilizing module and the 2nd LDO Voltage stabilizing module adopt LT1763 or LT1761 chip; Described the 4th LDO Voltage stabilizing module adopts LT1761 chip.
To sum up, the invention has the beneficial effects as follows:
1, the present invention has adapter circuit, the output voltage of battery can be adapted for to multiple different Voltage-output, and highly versatile can be supported the electronic product power supply of most of type; Can also support the power supply requirement of some special circuits;
2, after adapter circuit of the present invention carries out filtering to the output of battery, voltage stabilizing is exported, and the power supply signal of output is stable, and noise is little, can meet the power supply signal input requirements of precision circuit.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the circuit diagram of DCDC boost module and the 3rd filtration module.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
As shown in Figure 1, portable power source adaptive device, comprise battery, the adapter circuit being connected with battery, described adapter circuit comprises the DCDC boost module that the output voltage of battery is boosted to 7V, a LDO Voltage stabilizing module by the output voltage voltage stabilizing of battery at 3.3V, the 2nd LDO Voltage stabilizing module by the output voltage voltage stabilizing of battery at 2.5V, the 3rd LDO Voltage stabilizing module by the output voltage voltage stabilizing of DCDC boost module at a LDO Voltage stabilizing module of 5V, the 4th LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V, wherein: between a described LDO Voltage stabilizing module and accumulator output end, be connected with the first filtration module, between the 2nd LDO Voltage stabilizing module and accumulator output end, be connected with the second filtration module, between DCDC boost module and accumulator output end, be connected with the 3rd filtration module, between described the 3rd LDO Voltage stabilizing module and DCDC boost module, be connected with the 4th filtration module, between a described LDO Voltage stabilizing module and the 4th LDO Voltage stabilizing module, be connected with the 5th filtration module.
As shown in Figure 2, in the present embodiment, the LT1930ES5 chip of described DCDC boost module Linear company, it is 1.2MHz that Jian closes frequency, the easy filtering of switching noise of introducing, and peripheral components is simple, and SOT-23 encapsulates model, and chip size is only 3mmx3mm. And the output voltage that boosts of LT1930ES5 can not be too high here, otherwise power attenuation on rear class LDO is very large, causes that chip sends out money, after equipment work a period of time, can cause whole circuit board heating. Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of the 3rd LDO Voltage stabilizing module, other end ground connection.
Fig. 2 is the peripheral circuit diagram of LT1930ES5 chip, can set LT1930ES5 output voltage values by the resistance value of selecting R45 and R57, Linear Techn Inc.'s suggestion R57 value is 13.3K, and therefore the electric current on electric resistance partial pressure circuit is 1.255V/13.3K=94.7 microampere.
A described LDO Voltage stabilizing module, the 3rd LDO Voltage stabilizing module and the 2nd LDO Voltage stabilizing module adopt LT1763 or the LT1761 chip of Linear Techn Inc.; LTl763, LT1761 have the voltage output value such as 3.3V, 5V, and the main distinction is that maximum output circuit is respectively 300mA and 100mA, and the encapsulation of LTl761 chip is very little; Described the 4th LDO Voltage stabilizing module adopts LT1761 chip, need to have 1.2V power supply output valve.
The 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of DCDC boost module, other end ground connection;
Circuit, first filtering modular structure of the second filtration module, the 5th filtration module are identical, the structure of explanation filtration module as an example of the first filtration module example below: the first filtration module is made up of as the electric capacity of 0.01 microfarad, 1 capacitance as the electric capacity of 0.1 microfarad an inductance, 1 capacitance, inductance one end connects the output of battery, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a LDO Voltage stabilizing module, other end ground connection. The circuit of the second filtration module, the 5th filtration module is identical with structure, just the output of the second filtration module connects the 2nd LDO Voltage stabilizing module, and the input of the 5th filtration module connects the output of a LDO Voltage stabilizing module, the input that output connects the 4th LDO Voltage stabilizing module.
In the present invention, the output of the 4th filtration module is carried out linear voltage stabilization from battery output after DCDC boost module boosts again, and directly do not use the supply voltage of battery output to power, the problem of having avoided battery feed spread of voltage, output amplitude to change within the specific limits. First utilize DCDC boost module that voltage is upgraded to 7V, then stablized to 5V level by multi-disc LDO (low pressure difference linearity voltage-stabilized power supply) chip, respectively to the circuit supply that needs 5V power supply.
Between every two-stage input and output of voltage, be all designed with π type filter network, and used the ceramic condenser decoupling capacitance of solid-state tantalum electric capacity and the encapsulation of O.luF paster. To suppress power supply noise, prevent self-oscillation, guarantee that voltage output value can stablize in the time of different loads.
Below be only the preferred embodiment of the present invention, protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (6)
1. portable power source adaptive device, it is characterized in that, the adapter circuit that comprises battery, is connected with battery, described adapter circuit comprise by the output voltage of battery boost to the DCDC boost module of 7V, by the output voltage voltage stabilizing of battery a LDO Voltage stabilizing module of 3.3V, by the output voltage voltage stabilizing of battery the 2nd LDO Voltage stabilizing module of 2.5V, by the output voltage voltage stabilizing of DCDC boost module at the 3rd LDO Voltage stabilizing module of a LDO Voltage stabilizing module of 5V, the 4th LDO Voltage stabilizing module by the output voltage voltage stabilizing of a LDO Voltage stabilizing module at 1.2V.
2. portable power source adaptive device according to claim 1, it is characterized in that, between a described LDO Voltage stabilizing module and accumulator output end, be connected with between the first filtration module, the 2nd LDO Voltage stabilizing module and accumulator output end and be connected with between the second filtration module, DCDC boost module and accumulator output end and be connected with the 3rd filtration module, between described the 3rd LDO Voltage stabilizing module and DCDC boost module, be connected with between the 4th filtration module, a described LDO Voltage stabilizing module and the 4th LDO Voltage stabilizing module and be connected with the 5th filtration module.
3. portable power source adaptive device according to claim 2, it is characterized in that, the electric capacity that electric capacity that described the first filtration module is 0.01 microfarad by an inductance, 1 capacitance, 1 capacitance are 0.1 microfarad forms, inductance one end connects the output of battery, and the other end connects the input of a LDO Voltage stabilizing module; After two Capacitance parallel connections, one end connects the input of a LDO Voltage stabilizing module, other end ground connection.
4. portable power source adaptive device according to claim 3, is characterized in that, the circuit structure of described the second filtration module, the 5th filtration module is identical with the first filtration module.
5. portable power source adaptive device according to claim 2, is characterized in that, the 3rd filtration module is the electric capacity that capacitance is 2.2 microfarads, and this electric capacity one end connects the input of DCDC boost module, other end ground connection; Described the 4th filtration module is the electric capacity that capacitance is 1 microfarad, and this electric capacity one end connects the input of the 3rd LDO Voltage stabilizing module, other end ground connection.
6. according to the arbitrary described portable power source adaptive device of claim 1 to 5, it is characterized in that, described DCDC boost module adopts LT1930ES5 chip; A described LDO Voltage stabilizing module, the 3rd LDO Voltage stabilizing module and the 2nd LDO Voltage stabilizing module adopt LT1763 or LT1761 chip; Described the 4th LDO Voltage stabilizing module adopts LT1761 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558186.2A CN105591412A (en) | 2014-10-18 | 2014-10-18 | Mobile power source adaption device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558186.2A CN105591412A (en) | 2014-10-18 | 2014-10-18 | Mobile power source adaption device |
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| CN105591412A true CN105591412A (en) | 2016-05-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107358919A (en) * | 2017-08-29 | 2017-11-17 | 深圳市佳彩光电科技有限公司 | A kind of OLED screen curtain grey menu water ripples suppress and removal device |
| CN108269550A (en) * | 2016-12-30 | 2018-07-10 | 瑞昱半导体股份有限公司 | Display controller, display control chip and operation method thereof |
-
2014
- 2014-10-18 CN CN201410558186.2A patent/CN105591412A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269550A (en) * | 2016-12-30 | 2018-07-10 | 瑞昱半导体股份有限公司 | Display controller, display control chip and operation method thereof |
| CN107358919A (en) * | 2017-08-29 | 2017-11-17 | 深圳市佳彩光电科技有限公司 | A kind of OLED screen curtain grey menu water ripples suppress and removal device |
| CN107358919B (en) * | 2017-08-29 | 2023-10-31 | 苏州佳智彩光电科技有限公司 | OLED screen gray-scale picture water ripple suppression and removal device |
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Application publication date: 20160518 |