CN201773351U - Mobile terminal comprising data card and power supply control device thereof - Google Patents
Mobile terminal comprising data card and power supply control device thereof Download PDFInfo
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- CN201773351U CN201773351U CN2010202711626U CN201020271162U CN201773351U CN 201773351 U CN201773351 U CN 201773351U CN 2010202711626 U CN2010202711626 U CN 2010202711626U CN 201020271162 U CN201020271162 U CN 201020271162U CN 201773351 U CN201773351 U CN 201773351U
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Abstract
The utility model belongs to the technical field of data cards, and discloses a mobile terminal comprising the data card and a power supply control device thereof, wherein the device comprises a DC/DC module and an low dropout regulator (LDO) module, and further comprises a first electric module and a second electric module, the first electric module is bigger in demands of current, the second electric module is smaller in demands of current, the DC/DC module is connected with the first electric module, and the LDO module is connected with the second electric module. The utility model supplies power for the first electric module has bigger demands to current in the data card through the DC/DC module, and supplies power for the second electric module which has smaller demands to current in the data card through the LDO module. The solution is simple and practical, meets the demands of different subscriber identity module (SIM) card power supplies, and greatly saves the cost of the data card and the total machine.
Description
Technical field
The utility model belongs to the data card technical field, is specifically related to a kind of portable terminal and power control thereof that comprises data card.
Background technology
The power supply supply of data card plays an important role to data card.
The power unit of wireless data card of the prior art generally is the power management IC that directly uses in the nest plate, owing to power management IC mainly designs for the mobile phone scheme, a lot of functions of power management IC do not obtain using on data card, and power management IC accounts for very big cost in the scheme of wireless data card, in case some function of design can not be used, and will cause great waste.
How for data card provides a kind of power supply controlling schemes that can be simple and practical, saving the cost of data card, is one of direction of data card technical field research.
The utility model content
The purpose of this utility model is to provide a kind of power control of data card, is intended to for data card provides a kind of power supply controlling schemes that can be simple and practical, saves the cost of data card.
The utility model embodiment is achieved in that a kind of power control of data card, and described device comprises DC/DC module and LDO module;
Described device also comprises the first electricity consumption module that the electric current demand is bigger, and the second smaller electricity consumption module of electric current demand;
Wherein, described DC/DC module connects the described first electricity consumption module, and described LDO module connects the described second electricity consumption module.
The power control of the data card that the utility model embodiment provides, wherein, described device also comprises GPIO, and described GPIO connects described LDO, and described LDO realizes switch by described GPIO.
The power control of the data card that the utility model embodiment provides, wherein, described device also comprises metal-oxide-semiconductor, includes a scalable LDO among the described LDO, described metal-oxide-semiconductor connects described scalable LDO, is used to realize the connection of control circuit.
The utility model new embodiment also comprises a kind of portable terminal that comprises data card, and described terminal comprises a power control, and described device comprises DC/DC module and LDO module;
Described structure also comprises the first electricity consumption module that the electric current demand is bigger, and the second smaller electricity consumption module of electric current demand;
Wherein, described DC/DC module connects the described first electricity consumption module, and described LDO module connects the described second electricity consumption module.
The portable terminal that comprises data card that the utility model embodiment provides, wherein, described device also comprises GPIO, and described GPIO connects described LDO, and described LDO realizes switch by described GPIO.
The portable terminal that comprises data card that the utility model embodiment provides, wherein, described device also comprises metal-oxide-semiconductor, includes a scalable LDO among the described LDO, described metal-oxide-semiconductor connects described scalable LDO, is used to realize the connection of control circuit.
The utility model embodiment is that the first electricity consumption module that the electric current demand is bigger in the data card is powered by the DC/DC module, with the LDO module the second smaller electricity consumption module of electric current demand in the data card is powered, scheme is simply used, not only satisfy different SIM card power requirement, and saved the cost of data card and complete machine greatly.
Description of drawings
The power control structural drawing of the data card that Fig. 1 provides for the utility model embodiment;
One of realization principle schematic of DC/DC module and LDO module for power supply power supply in the power control of the data card that Fig. 2 provides for the utility model embodiment;
One of realization principle schematic of DC/DC module and LDO module for power supply power supply in the power control of the data card that Fig. 3 provides for the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structure of the power control of the data card that the utility model embodiment provides.
Described device comprises DC-DC power supply (Direct Current/Direct Current, DC/DC) module and low pressure difference linear voltage regulator (Low Dropout Regulator, LDO) module, wherein, described DC/DC module is used for the first bigger electricity consumption module of described data card electric current demand is powered, and described LDO module is used for the second smaller electricity consumption module of described data card electric current demand is powered.
Wherein, the described first electricity consumption module comprises core voltage and memory storage (MEMORY) module that the main control chip-BB of described data card uses.
The described second electricity consumption module comprises mimic channel, the peripheral components of BB, the input and output (Input/Output of the BB of described data card, I/O) module, quartz oscillator (Temperature Compensate X ' tal (crystal) Oscillator, TCXO) crystal oscillator module, USB (universal serial bus) (Universal Serial BUS, USB) physics access addressing (PHY) module; The described second electricity consumption module also comprises radio-frequency module, flash memory (T-FLASH) and client identification module (Subscriber Identity Module, SIM) card.
Fig. 2 and Fig. 3 show the realization principle of DC/DC module and LDO module for power supply power supply in the power control of data card.
The 1.2V voltage of the DC/DC module output among Fig. 2 and 1.8V voltage are respectively to the core voltage of the BB of the first electricity consumption module, one data card and the supply voltage of MEMORY module, because the current ratio that these first electricity consumption modules require is bigger, so the DC/DC module for power supply is used in design, to guarantee the stable of system.
The 2.6V of the LDO module output among Fig. 2 is the supply voltage to the artificial circuit part of the BB of second electricity consumption module-data card; Another 2.6V output is the supply voltage of the peripheral components, I/O module to the BB of second electricity consumption module-data card etc.; 2.85V be supply voltage to TCXO crystal oscillator module; 3.3V be the supply voltage to USB PHY module, these voltages all require to open in the time of start.
See also Fig. 3, used four LDO modules in this power control, the LDO module among Fig. 3 is respectively to power to second electricity consumption module-radio-frequency module, T-FLASH and SIM card.Wherein, this power control also comprise general I/O (General Purpose Input Output, GPIO), described GPIO connects each LDO module respectively, described GPIO also connects described BB, and the enabling all to control by GPIO of these LDO modules opened and closed.
Described power control also comprises Metal-oxide-semicondutor type field effect transistor ((Metal-Ooxid-Semiconductor, MOS), include a scalable LDO module in the described LDO module, described metal-oxide-semiconductor connects described scalable LDO module, the output of described scalable LDO module is controlled by this metal-oxide-semiconductor: when metal-oxide-semiconductor was opened, R3 was in parallel with R2, R3 open circuit when metal-oxide-semiconductor turn-offs, the voltage of its output is respectively 1.8V or 3.0V, is used for the SIM card of 1.8V and the SIM card of 3.0V.
The utility model embodiment also provides a kind of portable terminal that comprises data card, and described terminal comprises the power control that the utility model embodiment provides, and in view of this installs in above existing detailed description, repeats no more herein.
The utility model embodiment is that the first electricity consumption module that the electric current demand is bigger in the data card is powered by the DC/DC module, with the LDO module the second smaller electricity consumption module of electric current demand in the data card is powered, scheme is simply used, not only satisfy different SIM card power requirement, and saved the cost of data card and complete machine greatly.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (6)
1. the power control of a data card is characterized in that, described device comprises DC/DC module and LDO module;
Described structure also comprises the first electricity consumption module that the electric current demand is bigger, and the second smaller electricity consumption module of electric current demand;
Wherein, described DC/DC module connects the described first electricity consumption module, and described LDO module connects the described second electricity consumption module.
2. the power control of data card as claimed in claim 1 is characterized in that, described device also comprises GPIO, and described GPIO connects described LDO, and described LDO realizes switch by described GPIO.
3. the power control of data card as claimed in claim 1 is characterized in that, described device also comprises metal-oxide-semiconductor, includes a scalable LDO among the described LDO, and described metal-oxide-semiconductor connects described scalable LDO, is used to realize the connection of control circuit.
4. a portable terminal that comprises data card is characterized in that, described terminal comprises a power control, and described device comprises DC/DC module and LDO module;
Described device also comprises the first electricity consumption module that the electric current demand is bigger, and the second smaller electricity consumption module of electric current demand;
Wherein, described DC/DC module connects the described first electricity consumption module, and described LDO module connects the described second electricity consumption module.
5. the portable terminal that comprises data card as claimed in claim 4 is characterized in that described device also comprises GPIO, and described GPIO connects described LDO, and described LDO realizes switch by described GPIO.
6. the portable terminal that comprises data card as claimed in claim 4 is characterized in that described device also comprises metal-oxide-semiconductor, includes a scalable LDO among the described LDO, and described metal-oxide-semiconductor connects described scalable LDO, is used to realize the connection of control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202711626U CN201773351U (en) | 2010-07-23 | 2010-07-23 | Mobile terminal comprising data card and power supply control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202711626U CN201773351U (en) | 2010-07-23 | 2010-07-23 | Mobile terminal comprising data card and power supply control device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773351U true CN201773351U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202711626U Expired - Fee Related CN201773351U (en) | 2010-07-23 | 2010-07-23 | Mobile terminal comprising data card and power supply control device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271188A (en) * | 2011-07-27 | 2011-12-07 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal and power management method |
| CN103108081A (en) * | 2013-01-22 | 2013-05-15 | Tcl通讯（宁波）有限公司 | Subscriber identity module (SIM) card detection control device of mobile terminal |
| CN103825631A (en) * | 2014-02-28 | 2014-05-28 | 江苏智联天地科技有限公司 | Power supplying dynamic power supply adaption method for external device |
-
2010
- 2010-07-23 CN CN2010202711626U patent/CN201773351U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271188A (en) * | 2011-07-27 | 2011-12-07 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal and power management method |
| CN103108081A (en) * | 2013-01-22 | 2013-05-15 | Tcl通讯（宁波）有限公司 | Subscriber identity module (SIM) card detection control device of mobile terminal |
| CN103108081B (en) * | 2013-01-22 | 2015-06-17 | Tcl通讯（宁波）有限公司 | Subscriber identity module (SIM) card detection control device of mobile terminal |
| CN103825631A (en) * | 2014-02-28 | 2014-05-28 | 江苏智联天地科技有限公司 | Power supplying dynamic power supply adaption method for external device |
| CN103825631B (en) * | 2014-02-28 | 2016-06-01 | 江苏智联天地科技有限公司 | A kind of external equipment is powered dynamic power supplies adaptation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20130723 |