A voltage adjustment method and a mobile terminal

Abstract

This application provides a voltage adjustment method and a mobile terminal, relating to the field of mobile terminals. The mobile terminal includes: a processor, a battery connected to the processor, a cellular module, a boost bypass device, and a power module with buck but no boost function. The battery is connected to the power module via the boost bypass device, and the power module is connected to a power amplifier. The mobile terminal is not connected to an external power source. When the cellular module is working, if the transmit power of the power amplifier changes little within a preset time period, the battery voltage is less than the threshold voltage of the boost bypass device, and the transmit power of the power amplifier is low, then the processor instructs the boost bypass device to adjust the threshold voltage to a first threshold voltage, which is less than or equal to the battery voltage, so that the boost bypass device is in a high-efficiency pass-through mode, thereby reducing the power consumption of the boost bypass device on the battery, i.e., reducing the battery's power consumption rate and improving the mobile terminal's battery life in low-voltage, low-power scenarios.

Description

Technical Field

[0001] This application relates to the field of mobile terminals, and more particularly to a voltage adjustment method and a mobile terminal. Background Technology

[0002] To reduce the cost of mobile terminals, a power module with buck function but no boost function is installed in the mobile terminal, as well as a boost bypass device to supply power to the power amplifier (PA).

[0003] Currently, boost bypass devices employ a fixed threshold voltage Vset. When the battery voltage falls below this fixed threshold voltage Vset, the boost bypass device enters boost mode. In this mode, the boost bypass device boosts the battery voltage and then supplies power to the power amplifier through the power module. In boost mode, the boost bypass device experiences high power consumption and low efficiency, leading to faster power consumption in low-voltage, low-power scenarios, significantly reducing the mobile terminal's battery life. Summary of the Invention

[0004] This application provides a voltage adjustment method and a mobile terminal, which is used to put the boost bypass device in a pass-through mode when the battery of the mobile terminal is at low voltage and low power and the transmission power of the cellular module in the mobile terminal changes little, thereby reducing the power consumption of the boost bypass device, improving the efficiency of the boost bypass device, and thus reducing the battery consumption rate and improving the battery life of the mobile terminal.

[0005] To achieve the above objectives, this application adopts the following technical solution: Firstly, a voltage adjustment method is provided, applied to a mobile terminal. The mobile terminal includes: a processor, a boost bypass device, and a battery, a cellular module, and a power module with buck but no boost function connected to the processor. The cellular module includes a power amplifier and an RF integrated circuit; the battery is connected to the power module via the boost bypass device, and the power module is connected to the power amplifier; the RF integrated circuit is connected to the processor and the power amplifier; the boost bypass device is also connected to a first module, which is either the processor or the RF integrated circuit. When the mobile terminal is not connected to an external power source, it is powered by the battery within the mobile terminal. Based on this, the voltage adjustment method includes: When the cellular module is operating, if the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold (i.e., the change in the power amplifier's transmit power within the preset time period is small), the battery voltage is less than the threshold voltage of the boost bypass device, and the target voltage required by the power amplifier is less than the battery voltage (i.e., the power amplifier's transmit power is small), then the first module instructs the boost bypass device to adjust the threshold voltage to a first threshold voltage. The first threshold voltage is equal to or less than the battery voltage.

[0006] The working principle of the boost bypass device is as follows: when the battery voltage is less than the threshold voltage, the boost bypass device is in boost mode; when the battery voltage is greater than the threshold voltage, the boost bypass device is in shoot-through mode. In boost mode, the boost bypass device has high power consumption and low efficiency; in shoot-through mode, the boost bypass device has low power consumption and high efficiency.

[0007] Typically, boost bypass devices have a low threshold voltage, such as 3.6V. If the battery voltage is lower than the threshold voltage of the boost bypass device, the battery voltage is low, and the battery charge is also low, meaning the battery is in a low-voltage, low-charge state. In this situation, if the power amplifier's transmit power changes little over a preset time and the power amplifier's transmit power is low, the boost bypass device will adjust its threshold voltage to match the battery voltage. This puts the boost bypass device in pass-through mode. In pass-through mode, the boost bypass device has low power consumption and high efficiency, thereby reducing battery power consumption, slowing down battery drain, and ultimately improving the mobile terminal's battery life in low-voltage, low-charge scenarios.

[0008] In one possible implementation of the first aspect, the method further includes: when the cellular module is operating, if the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold value, the battery voltage is less than the threshold voltage of the boost bypass device, and the target voltage required by the power amplifier is greater than or equal to the battery voltage (i.e., the power amplifier's transmit power is relatively high), then the first module instructs the boost bypass device to adjust the threshold voltage to a second threshold voltage. The second threshold voltage is the sum of the target voltage and the voltage drop of the power supply module.

[0009] The higher the transmit power of a power amplifier, the higher the target voltage required by the power amplifier. Therefore, it is necessary to put the boost bypass device in boost mode to boost the battery voltage and then supply the required target voltage to the power amplifier via the power module.

[0010] Specifically, in this solution, the target voltage required by the power amplifier is greater than or equal to the battery voltage. Therefore, the sum of the target voltage required by the power amplifier operating in the cellular module and the voltage drop of the power supply module is definitely greater than the battery voltage. Based on the principle of the boost bypass device, the boost bypass device is in boost mode, thereby ensuring that the power amplifier operating in the cellular module is provided with the required target voltage, thus enabling it to operate normally.

[0011] In another possible implementation of the first aspect, the method further includes: when the cellular module is working, if the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold value, or if the voltage of the battery is greater than the threshold voltage of the boost bypass device, then the first module instructs the boost bypass device to keep the threshold voltage unchanged.

[0012] In this solution, when the battery voltage exceeds the threshold voltage of the boost bypass device, it indicates that the battery is in a high-voltage, high-charge state. At this time, based on the working principle of the boost bypass device, it is known that the device is in pass-through mode. In other words, under high-voltage, high-charge scenarios, the boost bypass device has low power consumption and high efficiency, thereby reducing battery power consumption, i.e., slowing down battery drain, and thus improving the mobile terminal's battery life under high-voltage, high-charge scenarios.

[0013] The power amplifier's transmit power varies significantly within a preset time period. To prevent the boost bypass device from failing to adjust its operating mode in a timely manner, the threshold voltage of the boost bypass device can be left unchanged.

[0014] In another possible implementation of the first aspect, in some mobile terminals, a power amplifier is configured for the cellular module in the second mode, but not in the first mode. Therefore, when the cellular module is in the first mode, it can reuse the power amplifier configured in the second mode. The rated maximum average transmit power of this power amplifier in the first mode is greater than its rated maximum average transmit power in the second mode. Based on this, the operation of the cellular module can include: the cellular module being in the second mode.

[0015] In another possible implementation of the first aspect, the method further includes: the cellular module is in a first mode, and in the first mode, a power amplifier configured for a second mode is reused; if the battery voltage is greater than or equal to a threshold voltage, the processor instructs the boost bypass device to keep the threshold voltage unchanged; if the battery voltage is less than the threshold voltage, the first module instructs the boost bypass device to raise the threshold voltage to a third threshold voltage.

[0016] In this solution, when the battery voltage is greater than or equal to the threshold voltage, it indicates that the battery is in a high-voltage, high-charge state. Even after passing through the power module, the battery voltage can still provide the power amplifier with its required target voltage. At this time, there is no need to adjust the threshold voltage of the boost bypass device, ensuring that the boost bypass device is in pass-through mode, thereby reducing the power consumption rate of the mobile terminal.

[0017] If the battery voltage is below the threshold voltage, it indicates that the battery is in a low-voltage, low-charge state. Even after passing through the power module, the battery voltage cannot provide the power amplifier with the required target voltage. In this case, it is necessary to increase the threshold voltage of the boost bypass device to ensure that the boost bypass device is in boost mode, thereby ensuring that the power amplifier receives the required target voltage and can operate normally.

[0018] In another possible implementation of the first aspect, the first mode includes a GSM operating mode and the second mode is an LTE operating mode or an NR operating mode.

[0019] In another possible implementation of the first aspect, the first mode may also include a GSM test mode.

[0020] In another possible implementation of the first aspect, the first module is a processor. In this case, the radio frequency integrated circuit is used to send information to the processor. This information is used to indicate the operating state of the cellular module. The operating state includes any of the following: the cellular module is in a second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold; the cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is greater than a preset threshold; the cellular module is in a first mode. Wherein, the rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode.

[0021] Secondly, this application provides a mobile terminal, including: a processor, a boost bypass device, and a battery, a cellular module, and a power module connected to the processor. The power module has a buck function but no boost function. The cellular module includes a power amplifier and a radio frequency integrated circuit. The battery is connected to the power module via the boost bypass device. The power module is connected to the power amplifier. When the battery voltage is less than the threshold voltage of the boost bypass device, the boost bypass device is in boost mode; when the battery voltage is greater than the threshold voltage, the boost bypass device is in pass-through mode. The radio frequency integrated circuit is connected to the processor and the power amplifier. The boost bypass device is also connected to a first module, which is either the processor or the radio frequency integrated circuit. The mobile terminal is not connected to an external power source. The first module is used to execute the methods described in the first aspect and any possible implementation thereof.

[0022] In one possible implementation of the second aspect, in some mobile terminals, a power amplifier is configured for the cellular module in the second mode, but not in the first mode. Therefore, when the cellular module is in the first mode, it can reuse the power amplifier configured in the second mode. The rated maximum average transmit power of this power amplifier in the first mode is greater than the rated maximum average transmit power in the second mode.

[0023] In another possible implementation of the second aspect, the first mode is GSM operating mode, and the second mode is LTE operating mode or NR operating mode.

[0024] In another possible implementation of the second aspect, the first mode also includes a GSM test mode.

[0025] In another possible implementation of the second aspect, the first module is a processor. In this case, the radio frequency integrated circuit is used to send information to the processor, indicating the operating state of the cellular module. This operating state includes any of the following: The cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold; the cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is greater than a preset threshold. The cellular module is also in the first mode. The rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode.

[0026] Thirdly, this application provides a computer-readable storage medium including computer instructions that, when executed on a mobile terminal, cause the mobile terminal to perform the methods described in the first aspect and any possible implementation thereof.

[0027] It should be understood that the technical effects of the second to third aspects described above can be referred to the technical effects of the first aspect and any of its embodiments, and will not be repeated here. Attached Figure Description

[0028] Figure 1 A schematic diagram of the discharge curve of a battery provided in an embodiment of this application; Figure 2 This is one of the structural schematic diagrams of a mobile terminal provided in the embodiments of this application; Figure 3 This is a second schematic diagram of the structure of a mobile terminal provided in an embodiment of this application; Figure 4 A schematic diagram of the efficiency curves of a boost bypass device in different modes provided in the embodiments of this application; Figure 5 A schematic diagram illustrating the relationship between the output voltage of an APT power module and the transmit power of a power amplifier, provided for an embodiment of this application; Figure 6 A schematic diagram illustrating the probability distribution of the transmit power of a power amplifier provided in an embodiment of this application; Figure 7 A schematic diagram illustrating the cumulative probability distribution of the transmit power of a power amplifier provided in an embodiment of this application; Figure 8 This is one of the flowcharts illustrating a voltage adjustment method provided in an embodiment of this application; Figure 9 This is the third schematic diagram of the structure of a mobile terminal provided in the embodiments of this application; Figure 10 This is a second schematic flowchart illustrating a voltage adjustment method provided in an embodiment of this application. Figure 11 A simulation diagram illustrating the benefits of different threshold voltage schemes provided in this application embodiment; Figure 12 This is one of the schematic diagrams illustrating the relationship between the transmit power and voltage of a power amplifier provided in this application embodiment; Figure 13 A second schematic diagram illustrating the relationship between the transmit power and voltage of a power amplifier, provided as an embodiment of this application; Figure 14 This is the third schematic diagram illustrating the relationship between the transmit power and voltage of a power amplifier, as provided in an embodiment of this application. Figure 15 A schematic diagram of the transmit power of a power amplifier in a cellular module in a video scene is provided as an embodiment of this application; Figure 16 This is the fourth schematic diagram of the structure of a mobile terminal provided in the embodiments of this application. Detailed Implementation

[0029] The terms "first" and "second" used in the embodiments of this application are only used to distinguish features of the same type and should not be construed as indicating relative importance, quantity, order, etc.

[0030] The terms "exemplary" or "for example" used in the embodiments of this application are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0031] The terms "coupling" and "connection" used in the embodiments of this application should be interpreted broadly. For example, they can refer to a physical direct connection or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0032] With the development of lithium battery technology, the negative electrode material of lithium batteries has changed from graphite to silicon-based materials. The layered structure of graphite only allows lithium ions to be embedded between the layers, thus limiting the number of lithium ion storage sites in graphite. However, silicon and lithium can form a Li4.4Si alloy, meaning each silicon atom can bind more lithium ions. This qualitative change in microscopic lithium storage capacity has significantly improved the energy density of lithium batteries, meaning that the capacity of lithium batteries is increasing while maintaining the same volume or weight. For example, the capacity of lithium batteries can reach 11000mAh.

[0033] The larger the capacity of a lithium battery, the lower its discharge cutoff voltage. For mobile terminals using these lithium batteries, the shutdown voltage is progressively lower to fully utilize the battery's capacity. For example, the shutdown voltage of mobile terminals gradually decreases from 3.4V to 3.2V, or even lower (e.g., 2.85V-2.5V). Hereinafter, lithium batteries will be referred to simply as batteries.

[0034] Figure 1 A schematic diagram of the discharge curve of a battery provided in an embodiment of this application is shown. Figure 1 As shown, the battery's cutoff voltage is 2.8V, meaning that the power-off voltage of the mobile terminal using this battery is 2.8V.

[0035] Figure 2 This illustration shows one of the structural schematic diagrams of a mobile terminal provided in an embodiment of this application.

[0036] like Figure 2 As shown, the mobile terminal includes a communication module, such as a cellular module 10. The mobile terminal communicates with other devices through the cellular module 10, enabling functions such as voice calls, data transmission, and network access. The cellular module 10 includes multiple radio frequency front-end modules 101, each including a power amplifier PA. Continuing as... Figure 2 As shown, the mobile terminal also includes: battery 11, power module 12 and antenna 13.

[0037] Battery 11 can be the aforementioned lithium battery. Battery 11 is connected to the power supply terminal of power module 12, providing voltage Vbat to power module 12, i.e., the input voltage of power module 12 is Vbat. The output terminal of power module 12 is connected to the power supply terminal of power amplifier PA, providing voltage Vapt to power amplifier PA, i.e., the output voltage of power module 12 is Vapt. Power module 12 provides the target voltage required by power amplifier PA.

[0038] The radio frequency front-end module 101 is connected to the antenna 13 and is used to transmit and receive signals through the antenna 13, thereby enabling the mobile terminal to communicate with other devices. Specifically, the antenna 13 can radiate the radio frequency signal amplified by the power amplifier PA outward.

[0039] Generally, power modules include those with buck converters but no boost converters, and those with both buck and boost converters. The price of a power module with buck converters is significantly lower than that of a power module with both buck and boost converters. Therefore, to reduce the cost of mobile terminals, terminal devices typically install power modules with buck converters to supply power to the power amplifier (PA).

[0040] The power supply module can be either an average power tracking (APT) power supply module or an envelope tracking (ET) power supply module. An APT power supply module can dynamically adjust the supply voltage to the power amplifier PA in real time based on the average transmit power of the power amplifier PA. An ET power supply module can provide the power amplifier PA with a supply voltage that dynamically changes with the envelope of the radio frequency signal.

[0041] The power module 12 discussed in this article is a power module with buck function but no boost function. Therefore, Figure 2 The output voltage Vapt of the power supply module 12 shown is less than the input voltage Vbat of the power supply module 12.

[0042] It should be understood that, in addition to the above, mobile terminals... Figure 2 In addition to the modules shown, other modules are also included, such as a processor, display module, and audio module. Besides the cellular module 10, the communication module may also include wireless fidelity (Wi-Fi) modules. Wireless Fidelity (WFi) modules, Bluetooth (Bluetooth, BT) modules, etc. Typically, the power amplifier (PA) in WFi and Bluetooth modules does not require power from the power supply module 12. For the specific structure of the mobile terminal, please refer to the relevant technical descriptions; they will not be repeated here.

[0043] Continue as Figure 2 As shown, if the transmit power of the power amplifier PA in the cellular module 10 increases while the current of the power amplifier PA remains essentially unchanged, the target voltage required by the power amplifier PA will increase accordingly. However, if the voltage of the battery 11 in the mobile terminal is lower than the preset voltage and the battery charge is lower than the preset charge (i.e., the mobile terminal is in a low-voltage, low-charge scenario), the voltage of the battery 11, after passing through the power module 12, cannot provide the required target voltage for the power amplifier PA. In other words, the output voltage Vapt of the power module 12 cannot reach the target voltage. Consequently, the transmit power of the power amplifier PA in the cellular module 10 cannot reach the target transmit power, causing the power amplifier PA to malfunction and potentially affecting the communication performance of the cellular module.

[0044] Figure 3 The second schematic diagram shows the structure of a mobile terminal provided in an embodiment of this application.

[0045] To address the aforementioned problems, this application provides a solution, specifically as follows: Figure 3As shown, a boost bypass device 21 is added between the power module 12 and the battery 11. The boost bypass device 21 includes a power switching transistor, the specific structure of which can be found in the relevant technical descriptions and will not be repeated here.

[0046] Specifically, the boost bypass device 21 has two operating modes: bypass mode and boost mode. The operating principles of the boost bypass device in both bypass and boost modes are described below: In direct-through mode, the boost power switch (usually the upper transistor) in the boost bypass device 21 remains continuously on, while the lower transistor remains completely off, allowing the input voltage of the boost bypass device 21 to be directly output through the on-state upper transistor. In this mode, the inductor acts only as a conductor, and the input and output voltages of the boost bypass device 21 are essentially the same. Figure 3 As shown, Vout and Vbat are basically the same.

[0047] In boost mode, the power switch inside the boost bypass device 21 is periodically switched on and off at a high frequency to coordinate with the external or internal inductor for energy conversion. When the power switch is on, the inductor stores electrical energy; when the power switch is off, the inductor releases electrical energy, which is then superimposed on the input voltage of the boost bypass device 21 for output, thus achieving voltage boost. In other words, in boost mode, the output voltage of the boost bypass device 21 is greater than the input voltage. Figure 3 As shown, Vout > Vbat.

[0048] The boost bypass device has a voltage setting pin used to set a threshold voltage Vset. This threshold voltage Vset is a fixed value (e.g., 3.6V). This threshold voltage Vset determines when the boost bypass device switches between the two operating modes mentioned above. Specifically, when the battery voltage is greater than or equal to the threshold voltage Vset, the boost bypass device is in shoot-through mode. When the battery voltage is less than the threshold voltage Vset, the boost bypass device is in boost mode. Continuing... Figure 3 As shown, in boost mode, the boost bypass device 21 boosts the voltage of the battery 11 and then supplies power to the radio frequency power amplifier PA in the cellular module 10 via the power module 12. At this time, the output voltage Vapt of the power module 12 can meet the target voltage required by the power amplifier PA in the cellular module, thereby enabling the output power of the power amplifier PA to reach the target transmit power, ensuring the normal operation of the power amplifier PA, and thus ensuring the communication performance of the cellular module.

[0049] However, based on the working principle of the boost bypass device in both shoot-through and boost modes: When the boost bypass device is in shoot-through mode, its internal power switch stops high-frequency switching, thus eliminating switching losses, and the current path flows only through the switch with extremely low on-resistance. Therefore, the boost bypass device has significantly reduced losses and higher efficiency in shoot-through mode.

[0050] When the boost bypass device is in boost mode, its internal power switches periodically switch at high frequency, generating switching losses. Conduction losses also occur when the power switches are turned on, and the inductor core experiences hysteresis and eddy current losses under a high-frequency alternating magnetic field. Therefore, the boost bypass device has significant losses and low efficiency in boost mode.

[0051] Figure 4 This diagram illustrates the efficiency curves of a boost bypass device provided in an embodiment of this application under different modes. Figure 4 Figure A shows a schematic diagram of the efficiency curves of the boost bypass device under different input voltages when it is in shoot-through mode. Figure 4 Figure B shows a schematic diagram of the efficiency curves of the boost bypass device under different input voltages when it is in boost mode.

[0052] Depend on Figure 4 A and Figure 4 As can be seen from B, the efficiency of the boost bypass device in boost mode is significantly lower than that in shoot-through mode.

[0053] Based on the law of conservation of energy, in boost mode, in order to ensure that the power amplifier (PA) reaches the same transmit power (e.g., 30W), the battery needs to provide more input power (e.g., 36W) to the boost bypass device. This excess power is dissipated as heat inside the boost bypass device.

[0054] Therefore, in low-voltage, low-power scenarios, when the transmit power of the power amplifier PA increases, the target voltage required by the power amplifier PA will correspondingly increase. At this time, if the voltage supplied by the power module to the power amplifier PA cannot meet the target voltage required by the power amplifier PA, and the battery voltage is less than the threshold voltage Vset, the boost bypass device will be in boost mode. Thus, in low-voltage, low-power scenarios, the boost bypass device will provide a larger voltage to the power module, enabling the power module to provide the target voltage required by the power amplifier PA. Therefore, with the current of the power amplifier PA remaining essentially unchanged, the transmit power of the power amplifier PA can reach the target transmit power, allowing the power amplifier PA to operate normally. However, this leads to increased battery consumption, thus accelerating the power drain of the mobile terminal.

[0055] If the voltage supplied by the power module to the power amplifier PA meets the target voltage required by the power amplifier PA, but the battery output voltage is less than the threshold voltage Vset, the boost bypass device will also switch to boost mode. In this case, the boost bypass device switching to boost mode is an unnecessary operation and will only accelerate the power consumption of the mobile terminal.

[0056] In summary, the boost bypass device uses a fixed threshold voltage Vset. Whenever the battery voltage is below this fixed threshold voltage Vset, the boost bypass device will enter boost mode. However, in boost mode, the efficiency of the boost bypass device is lower, leading to faster power consumption in low-voltage, low-power scenarios, significantly reducing the mobile terminal's battery life.

[0057] To address the aforementioned issues, this application provides a voltage adjustment method and a mobile terminal. The mobile terminal may be a device that uses a power module with buck functionality but no boost functionality to supply power to the power amplifier (PA) in a cellular module.

[0058] The mobile terminal discussed in this document can be deployed on land (e.g., indoors or outdoors, handheld or vehicle-mounted), on water (e.g., a model boat), or in the air (e.g., a drone). This mobile terminal can be referred to as user equipment (UE), access terminal, terminal unit, subscriber unit, terminal station, mobile station (MS), mobile station, terminal agent, or terminal device, etc. For example, the mobile terminal can be a mobile phone, tablet computer, laptop computer, smart bracelet, smartwatch, earphone, smart speaker, virtual reality (VR) device, augmented reality (AR) device, terminal in industrial control, terminal in self-driving, terminal in remote medical care, terminal in smart grid, terminal in transportation safety, terminal in smart city, terminal in smart home, etc. This application does not limit the specific type and structure of the mobile terminal.

[0059] Figure 5 This illustration shows a schematic diagram of the relationship between the output voltage of an APT power module and the transmit power of a power amplifier, according to an embodiment of this application.

[0060] Taking an APT power module as an example. Figure 5 As shown, when the transmit power of the power amplifier PA is low, the target voltage required by the power amplifier PA is low, and therefore the output voltage Vapt of the APT power module is low. For example, when the transmit power of the power amplifier PA is 10 dBm, the target voltage required by the power amplifier PA is 1.5V, that is, the output voltage Vapt of the APT power module is 1.5V.

[0061] Figure 6 This illustration shows a probability distribution diagram of the transmit power of a power amplifier according to an embodiment of this application. Figure 7 This diagram illustrates the cumulative probability distribution of the transmit power of a power amplifier provided in an embodiment of this application.

[0062] like Figure 6 and Figure 7 As shown, the transmit power of most power amplifiers falls within the low to medium power range. For example, the average transmit power of a power amplifier is around 9 dBm. Combined with... Figure 5 As can be seen, in most cases, the target voltage required by the power amplifier (PA) is relatively small, therefore the output voltage of the APT power module is relatively small.

[0063] Based on this, the voltage adjustment method provided in this application embodiment may include: the mobile terminal dynamically configures the threshold voltage Vset of the boost bypass device according to the transmit power of the power amplifier currently operating in the cellular module and the battery voltage, so that the boost bypass device remains in pass-through mode for as long as possible. In pass-through mode, the boost bypass device has low power consumption and high efficiency, thereby reducing the power consumption rate of the mobile terminal and extending the battery life of the mobile terminal.

[0064] For example, when the cellular module is operating and the transmit power of the currently operating power amplifier changes little within a preset time period, if the battery voltage is low and the power amplifier's transmit power is low, indicating that the target voltage required by the power amplifier is low, the processor can instruct the boost bypass device to set the threshold voltage Vset to a first threshold voltage. The first threshold voltage is less than or equal to the battery voltage, thus putting the boost bypass device in pass-through mode. In pass-through mode, the power consumption of the boost bypass device on the battery can be reduced, i.e., the battery's power consumption rate is reduced, thereby improving the mobile terminal's battery life in low-voltage, low-power scenarios.

[0065] If the battery voltage is high, it indicates that the battery is in a high-voltage, high-charge state. In this case, the battery voltage, after passing through the power module, can still provide the required target voltage to the power amplifier. Therefore, the processor instructs the boost bypass device to maintain the threshold voltage unchanged. As the working principle of the boost bypass device shows, it is in pass-through mode at this time. That is to say, in high-voltage, high-charge scenarios, the boost bypass device has low power consumption and high efficiency, thereby reducing the battery's power consumption and thus slowing down the battery drain rate, ultimately improving the mobile terminal's battery life in high-voltage, high-charge scenarios.

[0066] Figure 8 This illustration shows one of the flowcharts of a voltage adjustment method provided in an embodiment of this application. Figure 9 This is shown as a third schematic diagram of the structure of a mobile terminal according to an embodiment of this application. The voltage adjustment method can be executed by a processor or by a radio frequency integrated circuit (RFIC). The following example uses a processor as the executing entity. Figure 8 and Figure 9 This application describes a voltage adjustment method provided in its embodiments. For example... Figure 8 As shown, the voltage adjustment method includes: S801. When the mobile terminal is not connected to an external power source and the cellular module is working, the processor obtains the working status of the cellular module and the battery voltage.

[0067] like Figure 9 As shown, the mobile terminal also includes a processor 90, and the cellular module 10 also includes a radio frequency integrated circuit 91.

[0068] The processor 90 integrates a baseband processor (modem). The radio frequency integrated circuit 91 is connected to the processor 90 via a SERDE bus. During communication, after the baseband processor confirms the operating mode or test mode of the mobile terminal, it can send the corresponding configuration command to the radio frequency integrated circuit 91 via the SERDE bus. In this way, the radio frequency integrated circuit 91 can obtain the operating mode of the mobile terminal, such as LTE or New Radio (NR) mode; or, the radio frequency integrated circuit 91 can obtain the test mode of the mobile terminal, such as GSM test mode.

[0069] The RF integrated circuit 91 is also connected to the power amplifier PA in the RF front-end module 101. In this way, the RF integrated circuit 91 can obtain the transmit power of the RF power amplifier PA.

[0070] In addition, the radio frequency integrated circuit 91 is connected to the processor 90 through at least one general-purpose input / output (GPIO) interface to send the operating status of the mobile terminal to the processor 90.

[0071] In this example, the operating state of the cellular module can include: the cellular module is operating, and the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is less than a preset threshold value; or the cellular module is operating, and the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is greater than a preset threshold value.

[0072] Specifically, if the fluctuation of the power amplifier's transmit power within a preset time period is greater than a preset threshold, it can be understood as: the power amplifier's transmit power changes significantly within the preset time period. If the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold, it can be understood as: the power amplifier's transmit power changes relatively little within the preset time period.

[0073] It should be noted that, in each execution cycle after the voltage adjustment methods involved in this article are started, the radio frequency integrated circuit obtains the transmit power of the power amplifier working in the cellular module within a preset time period, thereby determining whether the fluctuation of the transmit power of the power amplifier working in the cellular module within the preset time period is greater than the preset threshold value.

[0074] For example, continue as follows Figure 9 As shown, the RF integrated circuit 91 is connected to the processor 90 via two GPIO interfaces. Thus, the RF integrated circuit 91 can provide two GPIO signals to the processor 90, which can be represented by GPIO1 and GPIO2 respectively. Both GPIO1 and GPIO2 can be represented by a first value or a second value. The first value can be represented by 0, and the second value can be represented by 1; this is not a limitation herein.

[0075] For example, when the cellular module is working, and the fluctuation of the transmit power of the currently operating power amplifier within a preset time period is greater than a preset threshold, GPIO1=0 and GPIO2=0. When the cellular module is working, and the fluctuation of the transmit power of the power amplifier within a preset time period is less than a preset threshold, GPIO1=1 and GPIO2=0.

[0076] Based on this, the processor can obtain the operating status of the cellular module from the values ​​of GPIO1 and GPIO2 obtained from the RF integrated circuit of the cellular module.

[0077] Optionally, in addition to sending the aforementioned GPIO signals to the processor, the RF integrated circuit can also send parameters such as the cellular module's operating frequency band, operating frequency, and the transmit power level of the power amplifier. The processor can then determine the cellular module's operating status based on these GPIO signals and the parameters, including the cellular module's operating frequency band, operating frequency, and transmit power level.

[0078] Optional, continue as follows Figure 9 As shown, processor 90 is connected to battery 11. Therefore, processor 90 can obtain the voltage and power level of battery 11. When the mobile terminal is not connected to an external power source and the cellular module is working, if the voltage of battery 11 is less than a preset voltage, and / or the power level of battery 11 is less than a preset power level, then processor 90 obtains the working status of the cellular module. In this way, the processor avoids continuously and periodically acquiring GPIO signals, thereby saving system resources.

[0079] It should be noted that the preset voltage is greater than the threshold voltage.

[0080] S802. If the transmit power of the power amplifier operating in the cellular module fluctuates by more than a preset threshold value within a preset time period, or if the battery voltage is greater than or equal to the threshold voltage of the boost bypass device, the processor sends a first instruction to the boost bypass device. The first instruction is used to instruct the boost bypass device to maintain the threshold voltage unchanged.

[0081] The first indication can also be understood as: indicating that the boost bypass device switches to the fixed Vset mode.

[0082] Continue as Figure 9 As shown, the processor 90 and the boost bypass device 21 are connected via an internal integrated circuit (I-IC). 2 C) Bus connection, can send I to boost bypass device 21 2 C instructions (such as the first instruction, the second instruction, the third instruction, the fourth instruction, etc.).

[0083] For example, when the processor receives GPIO1=0 and GPIO2=0, it indicates that the cellular module is working and the transmit power of the power amplifier working in the cellular module changes significantly within a preset time period. At this time, regardless of whether the battery voltage is greater than the threshold voltage of the boost bypass device, in order to ensure that the boost bypass device can respond to the power amplifier's demand for the target voltage in a timely manner, the processor instructs the boost bypass device to keep the threshold voltage Vset unchanged.

[0084] In this example, if the battery voltage is less than the threshold voltage Vset, the boost bypass device is in boost mode. In boost mode, the boost bypass device increases the input voltage of the power module, thereby enabling the power module to provide the required target voltage to the power amplifier PA operating in the cellular module, allowing the power amplifier PA to function normally.

[0085] If the battery voltage exceeds the threshold voltage Vset, the boost bypass device is in pass-through mode. In this mode, the battery voltage, after passing through the power module, can still provide the target voltage required by the power amplifier (PA) operating in the cellular module. In pass-through mode, the boost bypass device has low power consumption and high efficiency, thus not accelerating the power consumption of the mobile terminal.

[0086] For example, when the battery voltage is greater than or equal to the threshold voltage of the boost bypass device, it indicates that the boost bypass device is in pass-through mode and will not accelerate the consumption of battery power. At this time, regardless of whether the transmit power of the power amplifier operating in the cellular module changes greatly or little, the processor instructs the boost bypass device to keep the threshold voltage Vset unchanged.

[0087] Optionally, if the transmit power of the power amplifier operating in the cellular module fluctuates beyond a preset threshold within a preset time period, the processor may not send any instructions to the boost bypass device. The boost bypass device can listen for instructions sent by the processor. If it does not receive any instructions from the processor, the boost bypass device can remain in the default fixed Vset mode, meaning the boost bypass device maintains a constant threshold voltage.

[0088] S803. If the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is less than a preset threshold value, and the voltage of the battery is less than the threshold voltage of the boost bypass device, then the processor obtains the target voltage required by the power amplifier operating in the cellular module.

[0089] For example, when the processor receives GPIO1=1 and GPIO2=0, it indicates that the cellular module is working, and the transmit power of the power amplifier operating in the cellular module changes little within a preset time period. If the battery voltage is less than the threshold voltage Vset of the boost bypass device, it indicates that the boost bypass device needs to switch to boost mode. At this time, whether to put the boost bypass device into boost mode requires determining the relationship between the target voltage required by the power amplifier operating in the cellular module and the battery voltage, i.e., executing S804 below.

[0090] S804 The processor determines whether the battery voltage is greater than or equal to the target voltage required by the power amplifier operating in the cellular module.

[0091] Continue as Figure 5As shown, if the battery voltage is greater than or equal to the target voltage required by the power amplifier operating in the cellular module, that is, the power amplifier operating in the cellular module has a low transmission power, then the battery voltage, after passing through the power supply module, can still provide the power amplifier with the required target voltage, and the processor can execute the following S805; if the battery voltage is less than the target voltage required by the power amplifier operating in the cellular module, that is, the power amplifier operating in the cellular module has a high transmission power, then the battery voltage, after passing through the power supply module, cannot provide the power amplifier with the required target voltage, and the processor can execute the following S806.

[0092] S805, the processor sends a second instruction to the boost bypass device. The second instruction instructs the boost bypass device to set the threshold voltage to a first threshold voltage. The first threshold voltage is less than or equal to the battery voltage.

[0093] The power amplifier (PA) operating in the cellular module requires a relatively low target voltage, so there is no need to boost the battery voltage. In other words, the boost bypass device is in pass-through mode and does not need to enter boost mode.

[0094] Once the target voltage of the boost bypass device is adjusted to the first threshold voltage (i.e., the battery voltage is equal to or greater than the threshold voltage of the boost bypass device), the boost bypass device enters pass-through mode. In pass-through mode, the boost bypass device consumes less power, is more efficient, and does not accelerate the power consumption of the mobile terminal.

[0095] For example, when the first threshold voltage is less than the battery voltage, the first threshold voltage can be the sum of the target voltage required by the power amplifier and the voltage drop of the power module. The voltage drop of the power module is stored in the mobile terminal.

[0096] S806, the processor sends a third instruction to the boost bypass device. The third instruction is used to instruct the boost bypass device to adjust the threshold voltage to the second threshold voltage.

[0097] The second threshold voltage is the sum of the target voltage required by the power amplifier operating in the cellular module and the voltage drop of the power supply module (e.g., 0.4V).

[0098] If the target voltage required by the power amplifier operating in the cellular module is greater than or equal to the battery voltage, it indicates that the power amplifier PA operating in the cellular module has a high transmit power. In this case, the target voltage required by the power amplifier PA operating in the cellular module is high, and the battery voltage needs to be boosted.

[0099] Furthermore, the target voltage required by the power amplifier operating in the cellular module is greater than or equal to the battery voltage. Therefore, the sum of the target voltage required by the power amplifier and the voltage drop of the power supply module is definitely greater than the battery voltage. Based on the principle of boost bypass devices, the boost bypass device operates in boost mode, thereby ensuring that the power amplifier operating in the cellular module is provided with the required target voltage, thus enabling it to function normally.

[0100] It should be noted that the mobile terminal can periodically execute the above S801-S806 to ensure that the power amplifier in the cellular module can work normally and to keep the boost bypass device in pass-through mode as much as possible.

[0101] It should also be noted that, after S801 mentioned above, the processor can first determine whether the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is greater than a preset threshold value, and then determine whether the battery voltage is greater than the threshold voltage of the boost bypass device; or, the processor can first determine whether the battery voltage is greater than the threshold voltage of the boost bypass device, and then determine whether the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is greater than a preset threshold value. Of course, the above two processes can be executed simultaneously, and this article does not restrict this.

[0102] To further reduce costs, in the cellular modules of some mobile terminals, the power amplifier (PA) is no longer differentiated by mode such as Global System for Mobile Communications (GSM) or Long Term Evolution (LTE), but instead reuses the physical path according to frequency band groups (such as low frequency, medium frequency, etc.).

[0103] For example, in a cellular module, a power amplifier is configured in the second mode, but not in the first mode. Therefore, when the cellular module is in the first mode, it can reuse the power amplifier configured in the second mode. The rated maximum average transmit power of this power amplifier in the first mode is greater than its rated maximum average transmit power in the second mode. During operation, the mobile terminal's baseband processor can dynamically adjust the bias and mode of the reused power amplifier PA according to the mode, so that the power amplifier PA operates in either the first or second mode.

[0104] The first mode can include GSM mode. GSM mode can include GSM operating mode and GSM test mode. On the production line, the cellular module of the mobile terminal can be controlled to be in GSM test mode. During user use, the cellular module of the mobile terminal can be in GSM operating mode.

[0105] The second mode can include LTE mode, new radio (NR) mode, universal mobile telecommunications system (UMTS) mode, etc. Each mode within the second mode can also include operating mode and test mode; this is not limited in this document.

[0106] This paper takes the example of a mobile terminal reusing the power amplifier (PA) from the LTE mode in GSM mode. According to relevant technologies, the modulation method of the basic GSM standard is constant envelope modulation, and its corresponding power amplifier (PA) can output full power. However, the modulation method of LTE operating mode is peak-to-average power ratio (PA) modulation, and its corresponding power amplifier must linearly amplify and significantly back off to avoid distortion. Therefore, the rated maximum average transmit power of this power amplifier in GSM mode is greater than that in LTE mode.

[0107] When the mobile terminal is in a low-voltage, low-battery scenario and is in GSM mode, and the cellular module reuses the power amplifier (PA) in LTE mode, if the battery voltage is lower than a fixed threshold voltage Vset, the boost bypass device needs to switch to boost mode. This allows the power module to provide the required target voltage to the power amplifier (PA). Based on this, with the current of the power amplifier (PA) remaining essentially constant, the power module can provide sufficient transmit power to the power amplifier (PA) to ensure its normal operation in GSM mode.

[0108] When the battery voltage exceeds a fixed threshold voltage Vset, the boost bypass device is in shoot-through mode. In this case, if the battery voltage, after passing through the power module, cannot provide the required target voltage for the power amplifier PA, the power amplifier PA will not function properly in GSM mode.

[0109] It is important to note that when the cellular module is in GSM test mode and the mobile terminal is in a low-voltage, low-power scenario, if the power amplifier (PA) configured in LTE mode fails to function properly in GSM mode, the mobile terminal will fail factory testing. To address this issue, this application provides another voltage adjustment method based on the above example, which will be discussed below. Figure 10 introduce.

[0110] Figure 10 This is a second schematic flowchart illustrating a voltage adjustment method provided in an embodiment of this application. Figure 10 As shown, the voltage adjustment method includes: S1001. When the mobile terminal is not connected to an external power source and the cellular module is working, the processor obtains the working status of the cellular module and the battery voltage.

[0111] This step can be referred to in the relevant description in S801 above, and will not be repeated here.

[0112] The difference between this step and S801 above is that in this step: when the cellular module is in non-GSM mode and the fluctuation of the transmit power of the currently operating power amplifier within a preset time period is greater than a preset threshold, GPIO1=0 and GPIO2=0; when the cellular module is in non-GSM mode and the fluctuation of the transmit power of the currently operating power amplifier within a preset time period is less than a preset threshold, GPIO1=1 and GPIO2=0; when the cellular module is in GSM mode, GPIO1=0 and GPIO2=1.

[0113] Among them, non-GSM mode can be LTE mode or NR mode, etc.

[0114] Optional, continue as follows Figure 9 As shown, processor 90 is connected to battery 11. Therefore, processor 90 can obtain the voltage and power level of battery 11. When the mobile terminal is not connected to an external power source and the cellular module is working, if the voltage of battery 11 is less than a preset voltage, and / or the power level of battery 11 is less than a preset power level, then processor 90 obtains the working status of the cellular module. In this way, the processor avoids continuously and periodically acquiring GPIO signals, thereby saving system resources.

[0115] S1002. If the cellular module is in non-GSM mode, and the transmit power fluctuation of the power amplifier operating in the cellular module exceeds a preset threshold value within a preset time period; or, the battery voltage is greater than or equal to the threshold voltage of the boost bypass device, then the processor sends a first instruction to the boost bypass device. The first instruction is used to instruct the boost bypass device to maintain the threshold voltage unchanged.

[0116] The first indication can be understood as: indicating that the boost bypass device switches to the fixed Vset mode.

[0117] For example, when the processor receives GPIO1=0 and GPIO2=0, it indicates that the cellular module is in non-GSM mode, and the transmit power of the power amplifier operating in the cellular module varies significantly within a preset time period. In this case, the processor sends a first instruction to the boost bypass device. Specifically, this step can be referred to the relevant description in S802 above, and will not be repeated here.

[0118] Optionally, if the cellular module is in non-GSM mode and the transmit power of the power amplifier operating in the cellular module fluctuates beyond a preset threshold within a preset duration; or if the battery voltage is greater than the threshold voltage Vset of the boost bypass device, the processor may not send any instructions to the boost bypass device. The boost bypass device can listen for instructions sent by the processor. If it does not receive any instructions from the processor, the boost bypass device can remain in the default fixed Vset mode, meaning the boost bypass device maintains a constant threshold voltage.

[0119] S1003. If the cellular module is in non-GSM mode, the fluctuation of the transmit power of the power amplifier operating in the cellular module within a preset time period is less than a preset threshold value, and the battery voltage is less than the threshold voltage of the boost bypass device, then the processor obtains the target voltage required by the power amplifier operating in the cellular module.

[0120] For example, when the processor receives GPIO1=1 and GPIO2=0, it indicates that the cellular module is in non-GSM mode, and the transmit power of the power amplifier operating in the cellular module changes little within a preset time period. At this time, if the battery voltage is less than the threshold voltage Vset of the boost bypass device, the processor obtains the battery voltage. Specifically, this step can be referred to in the relevant description in S803 above, and will not be repeated here.

[0121] S1004. The processor determines whether the battery voltage is greater than or equal to the target voltage required by the power amplifier operating in the cellular module.

[0122] Specifically, this step can be referred to the relevant description in S804 above, and will not be repeated here. Specifically, if the battery voltage is greater than or equal to the target voltage required by the power amplifier operating in the cellular module, then S1005 is executed; if the battery voltage is less than the target voltage required by the power amplifier operating in the cellular module, then S1006 is executed.

[0123] S1005, The processor sends a second instruction to the boost bypass device. The second instruction is used to instruct the boost bypass device to set the threshold voltage to the first threshold voltage.

[0124] This step can be referred to in the relevant description in S805 above, and will not be repeated here.

[0125] S1006, The processor sends a third instruction to the boost bypass device. The third instruction is used to instruct the boost bypass device to adjust the threshold voltage to the second threshold voltage.

[0126] This step can be referred to in the relevant description in S806 above, and will not be repeated here.

[0127] S1007. If the cellular module is in GSM mode, the processor determines whether the battery voltage is greater than or equal to the threshold voltage of the boost bypass device.

[0128] For example, when the processor receives GPIO1=0 and GPIO2=1, it indicates that the cellular module is in GSM mode. At this time, if the battery voltage is greater than or equal to the threshold voltage Vset, it indicates that the mobile terminal is in a high-battery state, and the processor can execute S1008 as described below. If the battery voltage is less than the threshold voltage Vset, it indicates that the mobile terminal is in a low-battery state, and the processor can execute S1009 as described below.

[0129] S1008, The processor sends the first instruction to the boost bypass device.

[0130] In other words, after S1008, the threshold voltage Vset in the boost bypass device remains unchanged and is still a fixed threshold voltage Vset.

[0131] S1009, The processor sends a fourth instruction to the boost bypass device. The fourth instruction is used to instruct the boost bypass device to raise the threshold voltage to the third threshold voltage.

[0132] When the battery voltage is lower than the threshold voltage Vset, the boost bypass device raises the threshold voltage to the third threshold voltage. Since the battery voltage will then be lower than the third threshold voltage, the boost bypass device switches to boost mode. This ensures that the power module can provide the required target voltage to the power amplifier operating in the cellular module, enabling the power amplifier to function normally in GSM test mode. Consequently, in GSM test mode, the power amplifier's transmit power and corresponding ORFS (linearity) meet the relevant standards. The third threshold voltage is stored within the mobile terminal.

[0133] In the circuit structure described above, the boost bypass device is connected to the processor; therefore, the voltage adjustment method described above is handled by the processor. Optionally, the boost bypass device may not be connected to the processor but to the RF integrated circuit. In this example, the RF integrated circuit does not need to send the cellular module's operating status to the processor; therefore, GPIO signal lines between the RF integrated circuit and the processor can be omitted. However, in this example, the RF integrated circuit needs to obtain the battery voltage. After obtaining the cellular module's operating status, the RF integrated circuit can combine this information with the battery voltage to perform... Figure 8 and Figure 10 The relevant steps will not be repeated here.

[0134] The foregoing described the specific process of the voltage adjustment method provided in the embodiments of this application. The following section, in conjunction with... Figures 11-15 The beneficial effects of the voltage adjustment method provided by the embodiments of this application are introduced.

[0135] Figure 11 A simulation diagram illustrating the benefits of different threshold voltage schemes provided in an embodiment of this application is shown. Figure 11 Figure A shows a schematic diagram illustrating the relationship between battery voltage and battery current when the mobile terminal is in LTE / NR operating mode, using a fixed threshold voltage scheme and a dynamic threshold voltage scheme, respectively. Figure 11 Figure B illustrates the benefits of a dynamic threshold voltage scheme compared to a fixed threshold voltage scheme when the mobile terminal is in LTE / NR operating mode. Figure 11 In A, the dashed line represents the battery current using a fixed threshold voltage scheme, and the solid line represents the battery current using a dynamic threshold voltage scheme.

[0136] Taking a boost bypass device with a fixed threshold voltage of 3.6V as an example. Figure 11 As shown in Figure A, when the battery voltage is less than 3.6V, the battery current using the fixed threshold voltage scheme is greater than the battery current using the dynamic threshold voltage scheme. Conversely, when the battery voltage is less than 3.6V, the battery current using the fixed threshold voltage scheme is essentially equal to the battery current using the dynamic threshold voltage scheme.

[0137] For example, using a fixed threshold voltage scheme, the average battery current is 108.4 mA. Using a dynamic threshold voltage scheme, the average battery current is 104.1 mA. Based on this, compared with the fixed threshold voltage scheme, the average battery current is reduced by 3.96% using the dynamic threshold voltage scheme, meaning the mobile terminal can save 3.9% of energy. Therefore, the voltage adjustment method provided in this application can reduce the battery's power consumption rate in low-voltage, low-power scenarios.

[0138] like Figure 11 As shown in Figure B, when the battery voltage is less than 3.6V, the benefit of using the dynamic threshold voltage scheme is 5.5%-9% higher than that of using the fixed threshold voltage scheme, meaning the battery current is reduced by 5.5%-9%. When the battery voltage is greater than 3.6V, the benefit of using the dynamic threshold voltage scheme is basically the same as that of using the fixed threshold voltage scheme, meaning the battery current is basically the same, and therefore the battery consumption rate is basically the same.

[0139] Figure 12 This illustration shows one of the schematic diagrams showing the relationship between the transmit power and voltage of a power amplifier according to an embodiment of this application.

[0140] Let's take a battery with 10% charge as an example. Figure 12As shown, when the power amplifier's transmit power is less than the power threshold (e.g., 25 dBm), the target voltage required by the power amplifier using a dynamic threshold voltage scheme is less than the target voltage required by the power amplifier using a fixed threshold voltage scheme. For example, the voltage difference between the two can reach 0.5 V.

[0141] Figure 13 This is a second schematic diagram illustrating the relationship between the transmit power and voltage of a power amplifier according to an embodiment of this application.

[0142] Let's take a battery with 30% charge as an example. Figure 13 As shown, when the power amplifier's transmit power is less than the power threshold (e.g., 25 dBm), the target voltage required by the power amplifier using a dynamic threshold voltage scheme is less than the target voltage required by the power amplifier using a fixed threshold voltage scheme. For example, the voltage difference between the two can reach 0.2 V.

[0143] Figure 14 This is shown as the third schematic diagram illustrating the relationship between the transmit power and voltage of a power amplifier according to an embodiment of this application.

[0144] Let's take an example where the battery is at 80% charge. Figure 14 As shown, when the battery level is 80%, the mobile terminal is in a high-battery state. At this time, the battery voltage is relatively high, meaning the mobile terminal is in a high-voltage scenario. Therefore, the mobile terminal instructs the boost bypass device to maintain a constant threshold voltage. In this situation, the target voltage required by the power amplifier remains essentially unchanged regardless of variations in the power amplifier's transmit power. For example, the target voltage required by the power amplifier may be fixed at 3.7V.

[0145] It should be understood that the lower the target voltage required by the power amplifier, the lower the probability that the boost bypass device needs to switch to boost mode, or even doesn't need to switch to boost mode at all. Figures 12-13 It can be seen that the lower the battery's charge and voltage, the more likely the mobile terminal is to switch the boost bypass device to direct-through mode using a dynamic threshold voltage scheme. In direct-through mode, the boost bypass device has low power consumption and high efficiency, thereby reducing the mobile terminal's power consumption rate and extending its battery life.

[0146] Figure 15 This illustration shows a schematic diagram of the transmit power of a power amplifier in a cellular module for a video scene, provided by an embodiment of this application.

[0147] like Figure 15As shown, in video scenarios, the transmit power of the power amplifier in the cellular module intermittently exceeds the power threshold, and the time interval between two consecutive instances of exceeding the power threshold is on the order of seconds. For example, this time interval can be as short as 2 seconds or as long as 7 seconds.

[0148] However, the time required for a mobile terminal to execute the aforementioned dynamic threshold voltage scheme is on the order of microseconds, such as 28.5 microseconds. For example, the processor executes the above... Figure 8 or Figure 10 The method shown requires 0.5 microseconds, the processor needs 18 microseconds to send an instruction (such as the first instruction, the second instruction, etc.) to the boost bypass device, and the boost bypass device needs 10 microseconds to respond to the instruction sent by the processor, for a total of 28.5 microseconds. Therefore, in scenarios where the transmit power of the power amplifier in a cellular module changes, the mobile terminal has sufficient time to execute the aforementioned dynamic threshold voltage scheme, enabling it to adjust the threshold voltage of the boost bypass device in a timely manner, thereby adjusting the power consumption rate of the mobile terminal and consequently its battery life.

[0149] Furthermore, in low-voltage scenarios, when other modules in the mobile terminal (such as the camera module), or other modules in the communication module (such as the Wi-Fi module or Bluetooth module) that might affect the performance of the cellular module are not operating, the mobile terminal can prioritize ensuring the performance of these modules; when modules in the mobile terminal that might affect the performance of the cellular module are not operating, the mobile terminal can perform the above... Figure 8 or Figure 10 The method shown aims to minimize the battery power consumption of the boost bypass device.

[0150] Figure 16 The fourth schematic diagram shows the structure of a mobile terminal provided in an embodiment of this application.

[0151] In one example, consider a module where the other module is a camera module, and the boost bypass device is connected to the processor. For example... Figure 16 As shown, the camera module 1601 and the processor 90 are connected via at least one GPIO interface ( Figure 16 (Taking a GPIO interface as an example) connection. In this way, the camera module 1601 can provide a GPIO input signal to the processor 90, which can be represented by GPIO3, to indicate the working status of the camera module 1601.

[0152] GPIO3 can be represented by either a first value or a second value. For example, when the camera module is working, GPIO3=1; when the camera module is not working, GPIO3=0.

[0153] When the processor determines that the camera module is operational, the camera module's image capture service has a higher priority than the cellular module's communication service. At this time, the mobile terminal prioritizes ensuring the camera module functions properly. Therefore, the processor can send a fifth instruction to the boost bypass device. This fifth instruction instructs the boost bypass device to reduce the threshold voltage Vset to the fourth threshold voltage.

[0154] For example, the fourth threshold voltage is less than the battery voltage. This ensures that the boost bypass device is in shoot-through mode, thereby reducing the battery power consumption of the boost bypass device and ensuring the power supply requirements of the camera module.

[0155] When the processor determines that the camera module is not working, the terminal device can do the above. Figure 8 or Figure 10 The method shown.

[0156] This application also provides a computer-readable storage medium including instructions that, when executed on the electronic device, cause the electronic device to perform the steps in the above method embodiments.

[0157] This application also provides a computer program product including instructions that, when executed on the electronic device, cause the electronic device to perform the steps in the method embodiments described above.

[0158] The technical effects of the chip system, computer-readable storage medium, and computer program product are described in the preceding method embodiments.

[0159] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0160] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0161] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0162] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or modules may be electrical, mechanical, or other forms.

[0163] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located on one device or distributed across multiple devices. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0164] In addition, the functional modules in the various embodiments of this application can be integrated into one device, or each module can exist physically separately, or two or more modules can be integrated into one device.

[0165] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A voltage adjustment method, characterized by, Applied to a mobile terminal, the mobile terminal includes: a processor, a boost bypass device, and a battery, a cellular module, and a power module connected to the processor; The power module has a buck function but no boost function; the cellular module includes a power amplifier and an RF integrated circuit; the battery is connected to the power module through the boost bypass device, and the power module is connected to the power amplifier; the RF integrated circuit is connected to the processor and the power amplifier; the boost bypass device is connected to a first module, which is either the processor or the RF integrated circuit. The mobile terminal is not connected to an external power source; the method includes: When the cellular module is working, if the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold value, the battery voltage is less than the threshold voltage of the boost bypass device, and the target voltage required by the power amplifier is less than the battery voltage, then the first module instructs the boost bypass device to adjust the threshold voltage to a first threshold voltage. Wherein, the first threshold voltage is equal to or less than the battery voltage; when the battery voltage is less than or equal to the threshold voltage, the boost bypass device is in boost mode; when the battery voltage is greater than the threshold voltage, the boost bypass device is in shoot-through mode.

2. The voltage adjustment method according to claim 1, wherein The method further includes: When the cellular module is in operation, if the fluctuation of the power amplifier's transmit power within the preset time period is less than the preset threshold value, the battery voltage is less than the threshold voltage, and the target voltage required by the power amplifier is greater than or equal to the battery voltage, then the first module instructs the boost bypass device to adjust the threshold voltage to a second threshold voltage. Wherein, the second threshold voltage is the sum of the target voltage and the voltage drop of the power supply module.

3. The voltage adjustment method of claim 1, wherein, The method further includes: When the cellular module is in operation, if the fluctuation of the power amplifier's transmit power within the preset time period is less than the preset threshold value, or if the battery voltage is greater than or equal to the threshold voltage, then the first module instructs the boost bypass device to keep the threshold voltage unchanged.

4. The voltage adjustment method according to any one of claims 1 to 3, characterized by, The power amplifier is configured to be used when the cellular module is in a second mode; when the cellular module is in a first mode, the cellular module reuses the power amplifier. Wherein, the rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode; The operation of the cellular module includes: the cellular module being in a second mode.

5. The voltage adjustment method of claim 4, wherein, The method further includes: The cellular module is in the first mode, in which the power amplifier is reused. If the voltage of the battery is greater than or equal to the threshold voltage, the processor instructs the boost bypass device to keep the threshold voltage unchanged; if the voltage of the battery is less than the threshold voltage, the first module instructs the boost bypass device to raise the threshold voltage to a third threshold voltage.

6. The voltage adjustment method according to claim 5, wherein The first mode includes GSM operating mode, and the second mode is LTE operating mode or NR operating mode.

7. The voltage adjustment method of claim 5, wherein, The first mode also includes a GSM test mode.

8. The voltage adjustment method according to any one of claims 1 to 3, characterized by, The first module is the processor; the radio frequency integrated circuit is used to send information to the processor, the information being used to indicate the operating state of the cellular module; the operating state includes any of the following: The cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold; the cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is greater than a preset threshold; the cellular module is in the first mode. Wherein, the rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode.

9. A mobile terminal, characterized by include: The system comprises a processor, a boost bypass device, and a battery, a cellular module, and a power module connected to the processor; wherein the power module has a buck function but no boost function; the cellular module includes a power amplifier and an RF integrated circuit; the battery is connected to the power module through the boost bypass device, and the power module is connected to the power amplifier; when the voltage of the battery is less than the threshold voltage of the boost bypass device, the boost bypass device is in boost mode; when the voltage of the battery is greater than the threshold voltage, the boost bypass device is in pass-through mode; the RF integrated circuit is connected to the processor and the power amplifier; the boost bypass device is connected to a first module, which is either the processor or the RF integrated circuit; the mobile terminal is not connected to an external power source; the first module is used to execute the method of any one of claims 1-8.

10. The mobile terminal of claim 9, wherein, The power amplifier is configured to be used when the cellular module is in a second mode; when the cellular module is in a first mode, the cellular module reuses the power amplifier. Wherein, the rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode.

11. The mobile terminal of claim 10, wherein, The first mode is GSM working mode, and the second mode is LTE working mode or NR working mode.

12. The mobile terminal of claim 11, wherein, The first mode also includes a GSM test mode.

13. The mobile terminal according to any one of claims 9-12, characterized by The first module is the processor; the radio frequency integrated circuit is used to send information to the processor, the information being used to indicate the operating state of the cellular module; the operating state includes any of the following: The cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is less than a preset threshold; the cellular module is in the second mode, and the fluctuation of the power amplifier's transmit power within a preset time period is greater than a preset threshold; the cellular module is in the first mode. Wherein, the rated maximum average transmit power of the power amplifier in the first mode is greater than the rated maximum average transmit power of the power amplifier in the second mode.

14. A computer-readable storage medium, characterized in that, Includes computer instructions that, when executed on a mobile terminal, cause the mobile terminal to perform the method as described in any one of claims 1-8.

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