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Manages IC using the power source to deal with the portable design the power loss challenge
Monday, April 27th, 2009 at 08:00 | No commentsCategories: Power SupplyShort Content: Although handset designers unceasingly pronunciation, camera, GPS and other function integration, in does not surpass in half inch thick outer covering, portable media player designer micro conformity and so on controller, hard drive and tone circuit in pocket size seal, but designed integrated many kinds of functions the pressures to be still huge portable. The past during several years, the power semiconductor manufacturer promoted the massive power sources to manage IC(PMIC), used in the portable expense electron system's ... -
Based on embedded Linux intelligent handset province electricity design
Thursday, April 23rd, 2009 at 23:59 | No commentsCategories: Power SupplyShort Content: Each system wants the normal operation to depend on the CPU performance, the system software, middleware volume of each kind of system strategy and so on, the intelligent handsets are also same. This article has mainly discussed for intelligent handset choice appropriate CPU, as well as manages (DPM) and the auto-adapted voltage regulation (AVS) technology in the handset power source management's dynamic power source. Finally, I also carry on an optimized work to the handset software design, has realized software's ... -
In next generation handset’s power source management division plan
Wednesday, April 22nd, 2009 at 02:59 | No commentsCategories: Power SupplyShort Content: The third generation (3G) handset may provide has multi-purpose each characteristics. When the consumer enjoys these communication facility is newest and better function time, they also continue to request the single battery's operating time to be longer, handset's external dimensions to be younger. Although the IC integration may help the solution size question, but simultaneously also will increase the design order of complexity and limits the design flexibility. Now handset project engineer must consider that many kinds of factors come ... -
Handset overall power source managerial technique and solution discussion
Tuesday, April 21st, 2009 at 21:59 | No commentsCategories: Power SupplyShort Content: Are getting more and more along with handset's function, the user is also getting higher and higher to the handset battery's energy requirements, the existing lithium ion battery already more and more with difficulty satisfied the consumer to the normal period of revolution request. Regarding this, the field mainly adopts two methods; first, the development has the higher energy density new battery technology, like fuel cell; Second, works hard in battery's energy conversion efficiency and the energy conservation aspect. ... -
2.5G and 3G honeycomb telephone power source management solution
Friday, April 17th, 2009 at 12:59 | No commentsCategories: Power SupplyShort Content: User the honeycomb telephone which purchases regarding oneself has many requests generally, long talks over the telephone the time and the long standby time is obviously most important two items. Although the present 2G honeycomb telephone may talk over the telephone for several hours and waits for an opportunity for several days, but new 2.5G and the 3G honeycomb product actually cannot achieve this. In fact Japan's preliminary test discovery, some 3G honeycomb telephone did not have the electricity with ... -
Deals with the Chinese newest standard the handset USB charge and the overvoltage protection solution
Sunday, April 5th, 2009 at 07:08 | No commentsCategories: Power SupplyShort Content: China information industrial department issued "the YD/T 1591-2006 mobile communication handset battery charger and the connection specification and the test method" the standard already enforced, estimated that this action will reduce battery charger's quantity which largely China every year and the new handset sold together, thus reduced the handset overall material cost, and reduced abandons the environmental pollution which the electronic installation brought. The YD/T 1591 standards involve two major parts, respectively is the mobile communication handset side (i.e. ... -
Based on TOP227Y chip new switching power supply’s design
Monday, February 2nd, 2009 at 17:53 | No commentsCategories: Power SupplyShort Content: Abstract: Introduced one kind uses the TOP227Y intelligence integration chip design the switching power supply. Introduced this chip performance characteristic in detail. Has given this switching power supply's design method according to the TOP227Y characteristic, has carried on the detailed introduction to peripheral circuit's design, and has given this switching power supply's performance test result.Key word: Switching power supply; TO0Switch: Pulse-duration modulation O introduction The TOPSwitch monolithic switching power supply chip is American PI Corporation the new high frequency switching ... -
Multimedia handset’s power source management plans
Monday, January 26th, 2009 at 05:53 | No commentsCategories: Power SupplyTags: handset, Power sourceShort Content: The handset television, the handset game as well as the audio frequency broadcast and so on multimedia applications presented the huge challenge to handset's in power source management design. The handset designers need while to join the new multimedia function, maintains the handset exquisite contour and maintains battery's long life. Has provided the splendid new function newly using the processor, but the price is the power loss is higher. The new AV function means that music playbacking time is ... -
AT89C51 monolithic integrated circuit’s in telephone long-distance controller application
Friday, December 5th, 2008 at 14:52 | No commentsCategories: SCMTags: audio frequency amplification, handset, Monolithic integrated circuit, power amplifier, remote controlShort Content: Along with the communication industry's development, the telephone already entered everyone, carries on the remote control using the telephone the technology also day by day to use in the life, this article has designed one kind of telephone remote control system, this system mainly applies in the telephone remote control control domestic electric appliances, the user in the outdoors may through the random double sound multi-frequency telephone (including handset, extension telephone), according to the voice prompt, may to each ... -
Based on GPRS SOCKET correspondence applied research
Friday, October 17th, 2008 at 17:47 | No commentsCategories: Communication NetworksShort Content: Abstract: The SOCKET correspondence is one of present commonly used mailing addresss. In the article takes the micro controller by 8 monolithic integrated circuit AT89C52, it uses bringing the asynchronous serial port and level switch chip MAX232 and the GPRS module connection, uses at order to carry on the control for GPRS module LT8030, thus realizes the SOCKET correspondence. Introduces at order which in detail in the SOCKET correspondence must use, and gives realizes the SOCKET correspondence complete routine. Key ...
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