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Energy-saving Intelligent Phones Focus on Power Management
Posted: 13-Aug-2008 [Source: Tootoo]

[Analysts from Tootoo.com said regulators, post regulators and other emerging power management technology can provide a practical, compact and easy-to-use solution that provides new engines for intelligent phones.]

Beijing -- Analysis from Tootoo.com reported that for intelligent phones power programs are not only used to conduct an efficient regulator, but also used to gradually manage system-wide energy issues. Lithium-ion battery technology is still insufficient to meet growing energy demand. Therefore, in order to make intelligent phones last longer, the introduction of a revolutionary power management technology has been imminent.

Analysts from Tootoo.com said regulators, post regulators and other emerging power management technology can provide a practical, compact and easy-to-use solution that provides new engines for intelligent phones.

Regulators are used to convert battery voltage to a stable DC voltage. This part of the energy consumed is mainly produced from conversion efficiency. The common regulator devices are LDO and DC / DC. LDO is characterized by small ripples of output power, but its efficiency is relatively low. DC / DC is characterized by high efficiency and output current, but also a ripple, stability pressure that device manufacturers made to meet the design requirements. In fact, in practical application, a common structure is to have the DC / DC input side linking to the battery. This has a higher conversion efficiency. LDO input side linking to the DC / DC will have a small ripple power, which is a good structure for improving conversion efficiency. Cell phone chipmakers and PMU manufacturers have also noted the design requirements and are introducing them to their work.

At present, a linear regulator program is commonly used to upgrade the power management. But it is costly. Another alternative is a post regulator. The principle is to use DC / DC converters to generate a power rail, the power rail can be used as a low voltage input used in the linear regulator input. To do so, it has the equivalent effect of two inductor switches. Post regulators can save about 40 percent of board space, and by reducing the amount of external components, reduces costs.

Analysts from Tootoo.com also suggest that users can participate in the phone's power management. Such as with intelligent phones, users should shut down processes not in use after a period of time. In addition, turn the phones to sleep mode when not in use. Connecting the phone to the computer USB can also prolong the battery life of phones.

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