CN202094977U - Mobile phone capable of improving efficiency of audio power amplifier - Google Patents
Mobile phone capable of improving efficiency of audio power amplifier Download PDFInfo
- Publication number
- CN202094977U CN202094977U CN2011200877640U CN201120087764U CN202094977U CN 202094977 U CN202094977 U CN 202094977U CN 2011200877640 U CN2011200877640 U CN 2011200877640U CN 201120087764 U CN201120087764 U CN 201120087764U CN 202094977 U CN202094977 U CN 202094977U
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- China
- Prior art keywords
- audio
- mobile phone
- power amplifier
- management module
- sound volume
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model provides a mobile phone which comprises a baseband processing module for outputting audio signals, an audio power amplifier for receiving audio signals and amplifying the audio signals, and a power management module. The working voltage input end of the audio power amplifier is connected to the voltage output interface of the power management module; and the power management module provides variable working voltage for the audio power amplifier based on the volume grade selected by a user. By adopting the manner, the technical scheme of the utility model can remarkably lower the integral power consumption when the mobile phone plays music, and prolong the play time.
Description
[technical field]
The utility model relates to field of consumer electronics, especially, relates to a kind of mobile phone.
[background technology]
Music phone becomes more and more popular, and all basically in the market mobile phones are put loudspeaker outside all being furnished with, and all need special driving and put loudspeaker outward, in order to guarantee the quality of sound, generally all can select the audio-frequency power amplifier of AB class for use.And in the practical application, the maximal efficiency of AB genus audio power amplifier also has only 78.5%, mobile phone is in playing back music, efficient generally also has only below 50%, and efficient directly can influence the power consumption of mobile phone, and power consumption is big more, and the time that battery of mobile phone uses is just short more, therefore, be necessary to promote the efficient of audio-frequency power amplifier to reduce the power consumption of mobile phone.
[utility model content]
The technical problem that the utility model solves provides a kind of mobile phone that promotes audio-frequency power amplifier efficient.
The utility model is that the technical scheme that the technical solution problem adopts is: a kind of mobile phone is provided, comprises: baseband processing module, output audio signal; Audio-frequency power amplifier, received audio signal, and audio signal amplified; Power management module, the operating voltage input of audio-frequency power amplifier are connected on the voltage output interface of power management module, and power management module provides variable operating voltage according to the level of sound volume that the user selects for audio-frequency power amplifier.
According to one of the utility model preferred embodiment, power management module receives the level of sound volume that the user selects, and according to the corresponding described operating voltage of described level of sound volume output.
According to one of the utility model preferred embodiment, baseband processing module receives the level of sound volume of user's selection and controls the corresponding operating voltage of power management module output.
According to one of the utility model preferred embodiment, mobile phone further comprises Subscriber Interface Module SIM, is used to import the level of sound volume that the user selects, and Subscriber Interface Module SIM is sent to baseband processing module or power management module with level of sound volume.
According to one of the utility model preferred embodiment, mobile phone further comprises loud speaker, and loud speaker is sounding under the driving of the audio signal through amplifying, and audio-frequency power amplifier is the AB genus audio power amplifier.
According to one of the utility model preferred embodiment, when the user selects different level of sound volume, the different operating voltage of the corresponding output of power management module.
By the way, the utility model provides a kind of mobile phone that promotes audio-frequency power amplifier efficient, and it can significantly reduce the overall power of mobile phone when playing back music, prolong reproduction time.
[description of drawings]
Fig. 1 is the structural representation of mobile phone of the present utility model;
Fig. 2 is the structural representation according to the mobile phone of first embodiment of the present utility model.
[embodiment]
Relevant feature of the present utility model and technology contents please refer to following detailed description and accompanying drawing, and accompanying drawing only provides reference and explanation, is not to be used for the utility model is limited.
See also Fig. 1, Fig. 1 has illustrated the structural representation of mobile phone of the present utility model.As shown in Figure 1, the mobile phone that the utility model disclosed comprises: baseband processing module 101, audio-frequency power amplifier 103 and power management module 102.
In the present embodiment, power management module 102 can directly receive the level of sound volume that the user selects and thinks that audio-frequency power amplifier 103 provides variable operating voltage.Yet, in other embodiment of the present utility model, also can utilize baseband processing module 101 to receive the level of sound volume that the user selects, and export corresponding operating voltage to audio-frequency power amplifier 103 according to the level of sound volume control power management module 102 that the user selects.
As shown in Figure 1, the operating voltage input VBAT of audio-frequency power amplifier 103 is directly connected on the voltage output interface LDO of power management module 102, and the efficient of audio-frequency power amplifier 103 can be obtained by following formula:
η＝(πV
peak)/(4V
BAT)
V wherein
PeakBe the output amplitude of audio signal, this amplitude is only with the amplitude of audio-frequency power amplifier output signal and gain relevantly, and the amplitude of output signal is big more, V
PeakBig more, it is big more to gain, and η is big more.And V
BATBe the voltage that inputs to the operating voltage input VBAT of audio-frequency power amplifier 103.Therefore,, reduce power consumption, have only reduction V in order to promote efficient
BAT
In the utility model, the operating voltage input VBAT of audio-frequency power amplifier 103 is connected on the voltage output interface LDO of the output adjusted of power management module 102, according to the level of sound volume that the user selects, adjust the output voltage V on the voltage output interface LDO
BAT, and then can adjust efficiency eta.
Can test according to reality, obtain representing the table 1.1 of the corresponding relation of user's level of sound volume and LDO output voltage, must be noted that the correlation values in the table only is used to illustrate, in different applied environments, different numerical value can be arranged).Shown in table 1.1, when the user selects different level of sound volume, the different output voltage V of power management module 102 corresponding outputs
BATAs the operating voltage of audio-frequency power amplifier 103, only need adjust the output voltage V of LDO according to the different level of sound volume of user's setting
BAT, just can guarantee that audio-frequency power amplifier 103 always works in the efficient more than 70%.
Table 1.1
| Level of sound volume | The baseband output signal gain | The LDO output voltage |
| 1 | 23db | 3.4V |
| 2 | 20db | 3.2V |
| 3 | 17db | 3.0V |
| 4 | 14db | 2.9V |
| 5 | 13db | 2.7V |
| 6 | 8db | 2.6V |
| 7 | 5db | 2.4V |
| 8 | 2db | 2.2V |
| 9 | -1db | 2.0V |
The mobile phone that the utility model disclosed can further comprise Subscriber Interface Module SIM, for example: keyboard input module or touch-screen input module, be used on keyboard input module or touch-screen input module, selecting level of sound volume for the user, when power management module 102 has processing capacity, keyboard input module or touch-screen input module can be sent to level of sound volume power management module 102, and power management module 102 is after obtaining level of sound volume and then can export corresponding operating voltage to audio-frequency power amplifier 103 according to for example corresponding relation shown in the table 1.1.It should be noted that except that keyboard input module or touch-screen input module, the utility model can also adopt other Subscriber Interface Module SIMs to select level of sound volume for the user, as acoustic control input module etc., the utility model does not limit this.
When power management module 102 does not have processing capacity, keyboard input module or touch-screen input module can be sent to level of sound volume baseband processing module 101, and baseband processing module 101 is after obtaining level of sound volume and then can export corresponding operating voltage to audio-frequency power amplifier 103 according to for example control of the corresponding relation shown in the table 1.1 power management module 102.
In addition, in preferred embodiment of the present utility model, audio-frequency power amplifier 103 can be the AB genus audio power amplifier.
See also Fig. 2, Fig. 2 has illustrated the structural representation according to the mobile phone of the utility model one embodiment.As shown in Figure 2, in first embodiment of the present utility model, baseband processing module 201 is connected with the first input end 221 of audio-frequency power amplifier 203 with input resistance 205 by coupling capacitance 206.In addition, second input 222 of audio-frequency power amplifier amplifies resistance 208 and is arranged between the first input end 221 and output 223 of audio-frequency power amplifier by electric capacity 207 ground connection.Baseband processing module 201 can be by first input end 221 to audio-frequency power amplifier 203 input audio signals.
Therefore, by formula η=(π V
Peak)/(4V
BAT) as can be known, only need utilize the operating voltage V of power management module 202 suitable outputs corresponding to user-selected level of sound volume
BATOperating voltage input VBAT to audio-frequency power amplifier 203 can obtain rational efficient, thereby reduces power consumption.
By the way, the utility model provides a kind of mobile phone that promotes audio-frequency power amplifier efficient, and it can significantly reduce the overall power of mobile phone when playing back music, prolong reproduction time.
Above with reference to description of drawings various preferred embodiments of the present utility model; but only otherwise deviate from essence of the present utility model and scope; those skilled in the art can carry out modifications and changes on the various forms to it, all belongs to protection range of the present utility model.
Claims (6)
1. a mobile phone is characterized in that, comprising:
Baseband processing module, output audio signal;
Audio-frequency power amplifier receives described audio signal, and described audio signal is amplified;
Power management module, the operating voltage input of described audio-frequency power amplifier is connected on the voltage output interface of described power management module, and described power management module provides variable operating voltage according to the level of sound volume that the user selects for described audio-frequency power amplifier.
2. mobile phone according to claim 1 is characterized in that, described power management module receives the level of sound volume that the user selects, and according to the corresponding described operating voltage of described level of sound volume output.
3. mobile phone according to claim 1 is characterized in that, described baseband processing module receives the level of sound volume that the user selects, and controls the corresponding described operating voltage of described power management module output according to described level of sound volume.
4. according to claim 2 or 3 described mobile phones, it is characterized in that, described mobile phone further comprises Subscriber Interface Module SIM, is used to import the described level of sound volume that the user selects, and described Subscriber Interface Module SIM is sent to described baseband processing module or described power management module with described level of sound volume.
5. mobile phone according to claim 1 is characterized in that described mobile phone further comprises loud speaker, and described loud speaker is sounding under the driving of described audio signal through amplifying, and described audio-frequency power amplifier is the AB genus audio power amplifier.
6. mobile phone according to claim 1 is characterized in that, when the user selects different level of sound volume, and the different described operating voltage of the corresponding output of described power management module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200877640U CN202094977U (en) | 2010-12-02 | 2011-03-29 | Mobile phone capable of improving efficiency of audio power amplifier |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020639383 | 2010-12-02 | ||
| CN201020639383.4 | 2010-12-02 | ||
| CN2011200877640U CN202094977U (en) | 2010-12-02 | 2011-03-29 | Mobile phone capable of improving efficiency of audio power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094977U true CN202094977U (en) | 2011-12-28 |
Family
ID=45370016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200877640U Expired - Fee Related CN202094977U (en) | 2010-12-02 | 2011-03-29 | Mobile phone capable of improving efficiency of audio power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094977U (en) |
-
2011
- 2011-03-29 CN CN2011200877640U patent/CN202094977U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20170329 |