Power supply circuit, radio frequency module, electronic equipment and control method

Abstract

The invention discloses a power supply circuit, a radio frequency module, electronic equipment and a control method, and belongs to the technical field of communication. The power supply circuit is used for supplying power to the at least two power amplifiers; in the power supply circuit, first ends of power supply modules are connected with a power supply, second ends of the power supply modules are connected with power amplifiers corresponding to the power supply modules, each power supply module comprises a first power supply branch and a second power supply branch which are connected in parallel, and the first power supply branch comprises a first switch piece; the second power supply branch comprises a second switch piece and a voltage regulation circuit connected with the second switch piece, and the voltage regulation circuit is used for reducing the voltage output by the power supply and then outputting the voltage to the power amplifier; and the control module is connected with the power supply, the first switch piece and the second switch piece, and is used for respectively controlling the first switch piece or the second switch piece in the power supply module connected with the power amplifiers to be switched on according to the required voltage of each power amplifier.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a power supply circuit, a radio frequency module, an electronic device, and a control method. Background Technology

[0002] With the development of electronic devices, they have begun to support multi-band communication to improve data transmission speed and quantity to meet users' communication needs. For example, mobile terminals can be equipped with two Subscriber Identity Modules (SIMs) simultaneously to support dual-SIM multi-band communication.

[0003] The mobile terminal can provide independent communication links for two SIM cards to transmit signals in the communication frequency bands supported by each SIM card, enabling the transmission and reception of signals in different frequency bands and achieving dual-SIM communication. Each communication link has an independently operating power amplifier (PA) to amplify the received radio frequency signals under the same power supply voltage, ensuring effective signal transmission.

[0004] However, because the frequency of the radio frequency signals transmitted on each communication link is different, the power amplifiers (PAs) on different communication links operate at different frequency bands. Therefore, the power supply voltage requirements for different PAs are different. However, to ensure that the same power supply can simultaneously power each PA on every communication link, the power supply's output voltage is usually the maximum value required by each PA. Consequently, PAs are prone to performance degradation or even damage due to excessively high power supply voltage, which is a problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this application is to provide a power supply circuit, radio frequency module, electronic device and control method that can solve the problem that the power supply voltage of the PA is prone to cause the device performance to degrade or even be damaged.

[0006] In a first aspect, embodiments of this application provide a power supply circuit for supplying power to at least two PAs; the power supply circuit includes: a power supply, at least two power supply modules, and a control module, wherein each power supply module corresponds to one of the PAs;

[0007] The first terminal of each power supply module is connected to the power supply source, and the second terminal of each power supply module is connected to the corresponding power amplifier (PA). Each power supply module includes: a first power supply branch and a second power supply branch connected in parallel.

[0008] The first power supply branch includes a first switch, which is used to connect the power supply to the PA when closed;

[0009] The second power supply branch includes a second switch and a voltage regulation circuit connected to the second switch. The second switch is used to connect the power supply, the voltage regulation circuit and the PA when closed. The voltage regulation circuit is used to step down the voltage output by the power supply and then output it to the PA.

[0010] The control module is connected to the power supply, the first switch and the second switch, and is used to control the closing of the first switch or the second switch in the power supply module connected to the PA according to the required voltage of each PA.

[0011] Secondly, embodiments of this application provide a radio frequency module, the radio frequency module comprising: at least two power amplifiers (PAs), and a power supply circuit as described in any of the first aspects.

[0012] Thirdly, embodiments of this application provide an electronic device, which includes: any of the radio frequency modules described in the second aspect.

[0013] Fourthly, embodiments of this application provide a control method applied to any of the radio frequency modules described in the second aspect, or the electronic device described in the third aspect, the method comprising:

[0014] The control module obtains the required voltage for each PA in the radio frequency module;

[0015] The control module controls the closing of the first or second switch in the power supply module connected to each PA according to the required voltage of each PA.

[0016] Fifthly, embodiments of this application provide an electronic device, including a processor, a memory, and any of the radio frequency modules described in the second aspect;

[0017] The memory stores programs or instructions that can run on the processor, which, when executed by the processor, implement the steps of the control method as described in any of the fourth aspects.

[0018] In a sixth aspect, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the fourth aspect.

[0019] In a seventh aspect, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method described in the fourth aspect.

[0020] Eighthly, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method described in the fourth aspect.

[0021] In this embodiment, the power supply circuit includes: a power supply, at least two power supply modules, and a control module. Each power supply module corresponds one-to-one with the PA (Power Actuator). A first terminal of each power supply module is connected to the power supply, and a second terminal of the power supply module is connected to the corresponding PA. Each power supply module includes a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch. The second power supply branch includes a second switch and a voltage regulation circuit. The voltage regulation circuit is used to step down the voltage output by the power supply before outputting it to the PA. The control module can control the closing of the first or second switch in the power supply module connected to the PA according to the required voltage of each PA. Closing the first switch allows the power supply to provide the required voltage to the PA, or closing the second switch allows the power supply to provide the PA with the voltage obtained after stepping down by the voltage regulation circuit. This allows the same power supply to provide a smaller supply voltage to other PAs while satisfying the PA with the largest power demand, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power supply simultaneously provides the maximum required voltage to different PAs to power each PA, this approach can, to some extent, prevent the PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power supply, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of an RF module provided by related technologies; Figure 2 This is one of the structural schematic diagrams of the radio frequency module provided in the embodiments of this application; Figure 3 This is the second schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 4 This is the third schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 5 This is the fourth schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 6 This is the fifth schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 7 This is the sixth schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 8 This is the seventh schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 9 This is the eighth schematic diagram of the structure of the radio frequency module provided in the embodiments of this application; Figure 10 This is one of the flowcharts of the control method provided in the embodiments of this application; Figure 11 A block diagram of an electronic device provided in this application embodiment; Figure 12 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] The power supply circuit, radio frequency module, electronic equipment, and control method provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0038] With the development of electronic devices, they have begun to support multi-band communication to improve data transmission speed and quantity to meet users' communication needs. For example, a mobile terminal can be configured with two SIM cards simultaneously to support dual-SIM multi-band communication. The mobile terminal can provide independent communication links for each SIM card to transmit signals from the communication frequency bands supported by each SIM card, enabling the transmission and reception of signals from different frequency bands and achieving dual-SIM communication. For example, please refer to... Figure 1 This illustrates a structural diagram of a radio frequency module in a mobile terminal provided by related technologies. For example... Figure 1 As shown, the radio frequency module includes a first communication link 11, a second communication link 12, a radio frequency front-end module (FEM) 13, an antenna 14, and a radio frequency chip 15.

[0039] Both the first communication link 11 and the second communication link 12 are connected to the radio frequency chip 15. The first communication link 11 transmits radio frequency signals in a first communication band supported by a SIM card, and typically includes a PA 111 and a filter 112. The filter 112 is connected to the radio frequency chip 15 via PA 111. The filter 112 filters the received radio frequency signals to retain the radio frequency signals in the first communication band. PA 111 amplifies the power of the radio frequency signals output by the radio frequency chip 15. The second communication link 12 transmits radio frequency signals in a second communication band supported by another SIM card, and typically includes an interconnected PA 121 and a filter 122. The filter 122 is connected to the radio frequency chip 15 via PA 121. The filter 122 filters the received radio frequency signals to retain the radio frequency signals in the second communication band. PA 121 amplifies the power of the radio frequency signals output by the radio frequency chip 15.

[0040] FEM 13 includes a switching switch 131. A first terminal of switching switch 131 is connected to a first communication link 11, a second terminal of switching switch 131 is connected to a second communication link 12, and a third terminal of switching switch 131 is connected to an antenna 14. Switch 131 can be used to simultaneously connect the first terminal and the third terminal, as well as the second terminal and the third terminal, so that the first communication link 11 and the second communication link 12 can be simultaneously connected to the antenna 14, thereby enabling the transmission and reception of radio frequency signals in two different frequency bands.

[0041] In the RF module, antenna 14 can transmit the received RF signal to the first communication link 11 and the second communication link 12 via switch 131. On the first communication link 11, filter 112 filters the RF signal transmitted by antenna 14 to obtain the RF signal of the first communication frequency band, and outputs the RF signal of the first communication frequency band to RF chip 15 through PA 111 (which is deactivated). On the second communication link 12, filter 122 filters the RF signal transmitted by antenna 14 to obtain the RF signal of the second communication frequency band, and outputs the RF signal of the second communication frequency band to RF chip 15 through PA 121 (which is deactivated).

[0042] The RF chip 15 can output an RF signal in a first communication frequency band to the first communication link 11. PA 111 on the first communication link 11 amplifies the RF signal and outputs it to the antenna 14 through filter 112 and switch 131, causing the antenna 14 to transmit the RF signal. Similarly, the RF chip 15 can output an RF signal in a second communication frequency band to the second communication link 12. PA 121 on the second communication link 12 amplifies the RF signal and outputs it to the antenna 14 through filter 122 and switch 131, causing the antenna 14 to transmit the RF signal.

[0043] Currently, power amplifiers (PAs) on different communication links share a single power supply to provide the same supply voltage to all PAs on different links. However, because the frequency of the radio frequency signals transmitted on each communication link is different, the operating frequency bands of the PAs on different communication links are different. Therefore, the supply voltage requirements of different PAs vary. However, to ensure that the same power supply can simultaneously power each PA on every communication link, the power supply's output voltage is usually the maximum value required by each PA. Consequently, PAs are prone to performance degradation or even damage due to excessively high supply voltage, which has become a problem that urgently needs to be solved.

[0044] Please refer to Figure 2 This illustration shows a schematic diagram of a radio frequency (RF) module according to an embodiment of this application. The RF module includes at least two power amplifiers (PAs) and any of the power supply circuits provided in this embodiment. The power supply circuit is used to supply power to at least two PAs, thereby addressing the aforementioned problems to some extent and preventing device performance degradation or even damage caused by power supply voltage mismatch. Figure 2 As shown, the power supply circuit 2 includes: a power supply 21, at least two power supply modules 22 and a control module 23.

[0045] Each power supply module 22 corresponds one-to-one with a PA3. The first terminal of each power supply module 22 is connected to the power supply 21, and the second terminal of each power supply module 22 is connected to the corresponding PA3. Each power supply module 22 includes a first power supply branch 221 and a second power supply branch 222 connected in parallel. The input terminals of both the first power supply branch 221 and the second power supply branch 222 are connected to the power supply 21, and the output terminals of both are connected to the same PA3 corresponding to that power supply module 22.

[0046] The first power supply branch 221 includes a first switch Q1. The first switch Q1 is used to connect the power supply 21 to PA3 when closed. The first switch Q1 is also used to disconnect the power supply 21 from PA3 when closed.

[0047] The second power supply branch 222 includes a second switch Q2 and a voltage regulation circuit 2221 connected to the second switch Q2. The second switch Q2 is used to connect the power supply 21, the voltage regulation circuit 2221, and the PA connected to the second switch Q2 when closed. The voltage regulation circuit 2221 is used to step down the voltage output from the power supply 21 and output it to the PA3 connected to the voltage regulation circuit 2221.

[0048] The control module 23 is connected to the power supply 21, the first switch Q1, and the second switch Q2. The control module 23 is used to control the closing of the first switch Q1 or the second switch Q2 in the power supply module 22 connected to each PA 3 according to the required voltage of each PA 3.

[0049] In this embodiment, within a single power supply module 22, a first power supply branch 221 includes a first switch Q1. When the first switch Q1 is closed, it connects the power supply 21 to PA3, which is connected to the first switch Q1, so that the first power supply branch 221 directly outputs the voltage output by the power supply 21 to PA3, thereby directly providing the output voltage Uout of the power supply 21 to PA3. The output voltage Uout of the power supply 21 refers to the voltage output by the power supply 21.

[0050] The second power supply branch 222 includes a second switch Q2 and a voltage regulation circuit 2221. When the second switch Q2 is closed, it connects the power supply 21, the voltage regulation circuit 2221, and PA3, which is connected to the second switch Q2. This allows the second power supply branch 222 to output a voltage to PA3 that has been stepped down by the voltage regulation circuit 2221, providing PA3 with the power supply voltage Ui obtained by stepping down the output voltage Uout of the power supply 21 by the voltage regulation circuit 2221. Clearly, a single power supply module 22 can be used to provide at least two different power supply voltages to the PA3 it is connected to, for the PA to operate.

[0051] Therefore, the control module 23 can be used to obtain the required voltage of each PA connected to the power supply circuit, and according to the required voltage of each PA 3, control the first switch Q1 or the second switch Q2 in the power supply module 22 connected to PA 3 to close respectively, so that the power supply 21 provides the required voltage to PA3 by closing the first switch Q1, or the power supply 21 provides the required voltage to PA3 after being stepped down by the voltage regulation circuit 2221 by closing the second switch Q2, so as to realize the differentiated power supply of at least two PA3 by a single power supply.

[0052] Optionally, the first switch Q1 and the second switch Q2 can be a metal-oxide-semiconductor field-effect transistor (MOS) or a relay, etc. When the first switch Q1 is a MOS transistor, its control terminal is connected to the control module 23, its input terminal is connected to the power supply 23, and its output terminal is connected to PA3. The first switch Q1 is turned on under the control of a first-level control signal output by the control module 23 and turned off under the control of a second-level control signal output by the control module 23. Similarly, when the second switch Q2 is a MOS transistor, its control terminal is connected to the control module 23, its input terminal is connected to the power supply 23, and its output terminal is connected to PA3. The second switch Q2 is turned on under the control of a first-level control signal output by the control module 23 and turned off under the control of a second-level control signal output by the control module 23.

[0053] For example, the first switch Q1 and the second switch Q2 can be NMOS transistors with relatively low internal resistance. When the first switch Q1 is an NMOS transistor, the control terminal of the first switch Q1 refers to the gate; the input terminal of the first switch Q1 refers to the drain; and the output terminal of the NMOS transistor is the source. Some of the figures in the embodiments of this application illustrate the use of NMOS transistors as examples of first switch Q1 and second switch Q2.

[0054] Optionally, the control module 23 can be a wireless transceiver (WTR). The control module 23 can be connected to the power supply 21, the first switch Q1, and the second switch Q2 via a Generic RF Controls (GRFC) transmission line. Alternatively, the control module 23 can also be connected to the power supply 21, the first switch Q1, and the second switch Q2 via a Mobile Industry Processor Interface (MIPI). In some embodiments, the control module 23 can also be a microcontroller unit (MCU), etc.

[0055] In some embodiments of this application, the control module 23 can be used to acquire the required voltage of each PA connected to the power supply circuit 2, and compare the required voltage of each PA to determine the maximum required voltage. Furthermore, the control module 23 is used to control the power supply 21 to output the maximum required voltage, and to control the first switch Q1 in the power supply module 22 connected to the first PA to close and the second switch Q2 to open, and to control the first switch Q1 in the power supply module 22 connected to the second PA to open and the second switch Q2 to close, so that the power supply module 22 connected to the first PA outputs the maximum required voltage provided by the power supply 2 to the first PA through its first power supply branch 221, satisfying the power supply requirement of the first PA; and so that the power supply module 22 connected to the second PA outputs the power supply voltage obtained by stepping down the output voltage of the power supply 2 through the voltage regulation circuit 2221 through the second power supply branch 222, to provide the second PA with a power supply voltage lower than the maximum required voltage. Wherein, the first PA is the PA with the largest required voltage. The second PA is any PA connected to the power supply circuit 2 other than the first PA.

[0056] For example, such as Figure 3 As shown, taking an RF module comprising two power supply modules (PAs) PA1 3_1 and PA2 3_2 as an example, the required voltage U1 of PA1 3_1 is greater than the required voltage U2 of PA2 3_2. Correspondingly, the power supply circuit 2 includes, for example, two power supply modules 22: a first power supply module 22A and a second power supply module 22B. The first power supply module 22A is connected to PA1 3_1 and provides power to PA1 3_1. The second power supply module 22B is connected to PA2 3_2 and provides power to PA2 3_2.

[0057] Specifically, the first power supply module 22A includes a first power supply branch 221A and a second power supply branch 222A. In the first power supply branch 221A, a first switch Q1_1 is connected to the power supply 21 and PA1 3_1, respectively. In the second power supply branch 222A, a second switch Q2_1 is connected to the power supply 21 and a voltage regulation circuit 2221A, which is also connected to PA1 3_1.

[0058] The second power supply module 22B includes a first power supply branch 221B and a second power supply branch 222B. In the first power supply branch 221B, a first switch Q1_2 is connected to the power supply 21 and PA2 3_2, respectively. In the second power supply branch 222B, a second switch Q2_2 is connected to the power supply 21 and the voltage regulation circuit 2221B, which is also connected to PA2 3_2.

[0059] The control module 23 can be used to acquire the required voltages of PA1 3_1 and PA2 3_2 to determine that the required voltage U1 of PA1 3_1 is the maximum required voltage. Furthermore, the control module 23 controls the power supply 21 to output the maximum required voltage U1, and controls the first switch Q1_1 in the first power supply module 22A connected to PA1 3_1 (i.e., the first PA) to close and the second switch Q2_1 to open, and controls the first switch Q1_2 in the second power supply module 22B connected to PA2 3_2 (i.e., the second PA) to open and the second switch Q2_2 to close. Specifically, the closing of the first switch Q1_1 in the first power supply module 22A allows PA1 3_1 to be directly connected to the power supply 21 through the first power supply branch 221A of the first power supply module 22A, so that the power supply 21 directly outputs the maximum required voltage U1 to PA1 3_1 to supply power and meet the power supply requirements of PA1 3_1.

[0060] The second switch Q2_2 in the second power supply module 22B is closed, so that PA2 3_2 is connected to the power supply 21 through the second power supply branch 222B of the second power supply module 22B, so that the power supply 21 outputs a power supply voltage less than the maximum required voltage U1 to PA2 3_2 through the voltage regulation circuit 2221B, so as to supply power to PA2 3_2.

[0061] In other embodiments of this application, the control module 23 can also be used to obtain the required voltage of each PA connected to the power supply circuit 2, and compare the required voltage of each PA to determine the maximum required voltage. Furthermore, the control module 23 is used to control the power supply 21 to output the maximum required voltage, and to control the first switch Q1 in the power supply module 22 connected to the first PA to close and the second switch Q2 to open, so that the power supply module 22 connected to the first PA outputs the maximum required voltage provided by the power supply 2 to the first PA through its first power supply branch 221, thereby meeting the power supply requirements of the first PA.

[0062] Furthermore, the control module 23 is also used to adjust the voltage reduction amplitude of the voltage regulation circuit 2221 connected to the second PA to the target amplitude, and to control the first switch Q1 in the power supply module 22 connected to the second PA to open and the second switch Q2 to close. The target amplitude is the difference between the maximum required voltage and the required voltage of the second PA. By adjusting the voltage reduction amplitude of the voltage regulation circuit 2221 connected to the second PA, the power supply module 22 connected to the second PA can output the power supply voltage obtained by the voltage regulation circuit 2221 after the output voltage of the power supply 2 is reduced through the second power supply branch 222 to the second PA, thereby providing the required voltage to the second PA and meeting its power supply needs.

[0063] In summary, the power supply circuit provided in this application includes: a power supply, at least two power supply modules, and a control module, with each power supply module corresponding to a PA. The first end of each power supply module is connected to the power supply, and the second end is connected to the corresponding PA. Each power supply module includes a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch. The second power supply branch includes a second switch and a voltage regulation circuit. The voltage regulation circuit is used to step down the voltage output by the power supply before outputting it to the PA. The control module is used to control the closing of the first or second switch in the power supply module connected to the PA according to the required voltage of each PA. Closing the first switch allows the power supply to provide the required voltage to the PA, or closing the second switch allows the power supply to provide the PA with the voltage obtained after stepping down by the voltage regulation circuit. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power supply simultaneously provides the maximum required voltage to different PAs to power each PA, this approach can, to some extent, prevent the PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power supply, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0064] In some embodiments of this application, the number of second power supply branches 222 in a single power supply module 22 is at least two. The voltage regulation circuit 2221 in each second power supply branch 222 is used to step down the voltage output from the power supply 21 by different magnitudes, and output the stepped-down voltage to the PA connected to the voltage regulation circuit 2221. That is, each power supply module 22 includes at least two second power supply branches 222. The voltage regulation circuit 2221 in each second power supply branch 222 is used to step down the voltage output from the power supply 21 to obtain a stepped-down voltage, and output the stepped-down voltage to the PA connected to the voltage regulation circuit 2221. The stepped-down voltage output by each voltage regulation circuit 2221 is different.

[0065] Optionally, the control module 23 can be used to obtain the voltage drop amplitude of the voltage regulation circuit 2221 in each power supply module 22; control the target second switch in the power supply module 22 connected to the second PA to close, the first switch Q1 to open, and the second switch Q2 (excluding the target second switch) to open. Wherein, the difference between the voltage drop amplitude of the voltage regulation circuit 2221 connected to the target second switch and the target amplitude is less than the target amplitude threshold, and the target amplitude is the difference between the maximum required voltage and the required voltage of the second PA. Optionally, the voltage drop amplitude of the voltage regulation circuit 2221 connected to the target second switch is less than the target amplitude and closest to the target amplitude.

[0066] Optionally, the control module 23 can calculate the target amplitude for each second PA, which is the difference between the maximum required voltage (i.e., the output voltage Uout of the power supply) and the required voltage of the second PA. Based on the voltage reduction amplitude of the voltage regulation circuit 2221 in each power supply module 22, the control module 23 controls the target second switch in the power supply module 22 connected to the second PA to close, the first switch Q1 to open, and the second switch Q2 other than the target second switch to open.

[0067] This allows the voltage regulation circuit 2221 in the second power supply branch 222 connected to the second PA to output a power supply voltage that is larger than the required voltage of the second PA but closest to the required voltage. This ensures that the power supply voltage is as low as possible to meet the power supply requirements of the second PA, thereby avoiding the PA from being connected to an excessively high power supply voltage, which could lead to a decrease in PA performance or even damage, and ensuring the stable operation of the PA.

[0068] For example, such as Figure 4 As shown, the RF module includes two power supply modules, PA1 3_1 and PA2 3_2, as an example. Assume that PA1 3_1 requires a voltage U1 of 5V, and PA2 3_2 requires a voltage of 3V. Each power supply module 22 includes a first power supply branch 221, a second power supply branch 222-1, and a second power supply branch 222-2 connected in parallel, totaling one first power supply branch 221 and two second power supply branches 222. The voltage reduction of the voltage regulation circuit in the second power supply branch 222-1 is 0.7V, and the voltage reduction of the voltage regulation circuit in the second power supply branch 222-2 is 1.4V.

[0069] Control module 23 can be used to control the power supply 21 to output 5V (i.e., the maximum required voltage U1), and to control the first switch Q of the first power supply branch 221 in the first power supply module 22A connected to PA1 3_1 (i.e., the first PA) to close, and the second switches Q2 of the second power supply branches 222-1 and 222-2 to open. Furthermore, control module 23 is also used to determine that the target amplitude of PA2 3_2 (i.e., the second PA) is 5-3V, and then control the second switch Q2 of the second power supply branch 222-2 in the second power supply module 22B connected to PA2 3_2 (i.e., the second PA) to close, the first switch Q of the first power supply branch 221 to open, and the second switch Q2 of the second power supply branch 222-1 to open. The voltage reduction amplitude of the voltage regulation circuit of the second power supply branch 222-2 in the second power supply module 22B, at 1.4V, is closest to the target amplitude of 2V, while still being less than the target amplitude of 2V.

[0070] In this embodiment, the voltage regulation circuit 2221 is used to step down the voltage output from the power supply 21 and then output it to the PA connected to the voltage regulation circuit 2221. The specific circuit structure of the voltage regulation circuit 2221 can have various forms; this embodiment illustrates two examples.

[0071] In an alternative embodiment, each voltage regulation circuit 2221 may include a different number of voltage divider devices. Furthermore, when a single voltage regulation circuit 2221 includes at least two voltage divider devices, these devices may be connected in series to ensure that the output voltage of each voltage regulation circuit 2221 after voltage division is different, thus exhibiting different voltage drop amplitudes for each voltage regulation circuit 2221. In some embodiments, the voltage divider devices may be diodes or resistors, etc.

[0072] For example, such as Figure 5 As shown, the RF module includes two PAs, PA1 3_1 and PA2 3_2, as an example. Correspondingly, the power supply circuit 2 includes two power supply modules 22, namely a first power supply module 22A and a second power supply module 22B.

[0073] Specifically, the first power supply module 22A includes a first power supply branch 221A, a second power supply branch 221A-1 and a second power supply branch 221A-2 connected in parallel, for a total of one first power supply branch 221A and two second power supply branches 222A.

[0074] In the first power supply branch 221A, the first switch Q1_1 is connected to the power supply 21 and PA1 3_1 respectively. In the second power supply branch 222A-1, the second switch Q2_1_1 is connected to the power supply 21 and the voltage regulation circuit 2221A-1, which is also connected to PA1 3_1. The voltage regulation circuit 2221A-1 includes a diode D1_1, the anode of which is connected to the power supply 21, and the cathode of which is connected to the second switch Q2_1_1.

[0075] In the second power supply branch 222A-2, the second switch Q2_1_2 is connected to the power supply 21 and the voltage regulation circuit 2221A-2, which is also connected to PA1 3_1. The voltage regulation circuit 2221A-2 includes two diodes D1_2-D1_3 connected in series. The anode of diode D1_2 is connected to the power supply 21, the cathode of diode D1_2 is connected to the anode of diode D1_3, and the cathode of diode D1_3 is connected to the second switch Q2_1_1.

[0076] The forward voltage drop of the diode is 0.7V. Therefore, the voltage drop of the voltage regulation circuit 2221A-1 in the second power supply branch 222A-1 is 0.7V; the voltage drop of the voltage regulation circuit 2221A-2 in the second power supply branch 222A-2 is 1.4V.

[0077] Based on this, the control module 23 has the following three control states for the first power supply module 22A. In the first control state, the control module 23 controls the first switch Q1_1 to close and the second switch Q2_1_1 and the second switch Q2_1_2 to open. At this time, the power supply voltage output by the first power supply module 22A is Uout, where Uout represents the voltage output by the power supply 23.

[0078] In the second control scenario, control module 23 controls the first switch Q1_1 to open, the second switch Q2_1_1 to close, and the second switch Q2_1_2 to open. At this time, the power supply voltage output by the first power supply module 22A is Uout-0.7V.

[0079] In the third control scenario, control module 23 controls the first switch Q1_1 to open, the second switch Q2_1_1 to open, and the second switch Q2_1_2 to close. At this time, the power supply voltage output by the first power supply module 22A is Uout-1.4V.

[0080] Similarly, the second power supply module 22B includes a first power supply branch 221B, a second power supply branch 221B-1 and a second power supply branch 221B-2 connected in parallel, for a total of one first power supply branch 221B and two second power supply branches 222B.

[0081] In the first power supply branch 221B, the first switch Q1_2 is connected to the power supply 21 and PA2 3_2 respectively. In the second power supply branch 222B-1, the second switch Q2_2_1 is connected to the power supply 21 and the voltage regulation circuit 2221B-1, which is also connected to PA2 3_2. The voltage regulation circuit 2221B-1 includes a diode D2_1, the anode of which is connected to the power supply 21, and the cathode of which is connected to the second switch Q2_2_1.

[0082] In the second power supply branch 222B-2, the second switch Q2_2_2 is connected to the power supply 21 and the voltage regulation circuit 2221B-2, which is also connected to PA2 3_2. The voltage regulation circuit 2221B-2 includes two diodes D2_2-D2_3 connected in series. The anode of diode D2_2 is connected to the power supply 21, the cathode of diode D2_2 is connected to the anode of diode D2_3, and the cathode of diode D2_3 is connected to the second switch Q2_2_2.

[0083] Specifically, the voltage reduction of the voltage regulation circuit 2221B-1 in the second power supply branch 222B-1 is 0.7V; the voltage reduction of the voltage regulation circuit 2221B-2 in the second power supply branch 222B-2 is 1.4V. Based on this, the control module 23 has the following three control states for the second power supply module 22B.

[0084] In the first control scenario, control module 23 controls the first switch Q1_2 to close, and the second switches Q2_2_1 and Q2_2_2 to open. At this time, the power supply voltage output by the second power supply module 22B is Uout.

[0085] In the second control scenario, control module 23 controls the first switch Q1_2 to open, the second switch Q2_2_1 to close, and the second switch Q2_2_2 to open. At this time, the power supply voltage output by the second power supply module 22B is Uout-0.7V.

[0086] In the third control scenario, control module 23 controls the first switch Q1_2 to open, the second switch Q2_2_1 to open, and the second switch Q2_2_2 to close. At this time, the power supply voltage output by the second power supply module 22B is Uout-1.4V.

[0087] If we assume that PA1 3_1 requires a voltage U1 of 5V and PA2 3_2 requires a voltage of 3V, then, in Figure 5 In the RF module shown, the control module 23 can be used to control the power supply 21 to output 5V (i.e., the maximum required voltage U1), and control the first switch Q1_1 in the first power supply module 22A connected to PA13_1 (i.e., the first PA) to close, and the second switches Q2_1_1 and Q2_1_2 to open. Furthermore, the control module 23 is also used to determine that the target amplitude of PA23_2 (i.e., the second PA) is 5-3V, and then control the first switch Q1_2 in the second power supply module 22B connected to PA23_2 (i.e., the second PA) to open, the second switch Q2_2_1 to open, and the second switch Q2_2_2 to close. The voltage drop of the voltage regulation circuit of the second power supply branch 222B-2 in the second power supply module 22B is 1.4V, which is less than the target amplitude of 2V, but closest to the target amplitude of 2V.

[0088] In an alternative embodiment, each voltage regulation circuit 2221 may include a clamping module and a transistor P. The clamping module is connected to the second switch Q2 and the control terminal of the transistor P, respectively. The clamping module is used to limit the voltage output from the power supply 21 to a clamping voltage when the second switch Q2 is closed, and outputs a clamping voltage to the control terminal of the transistor P. The input terminal of the transistor P is connected to the power supply 21, and the output terminal of the transistor P is connected to PA. The transistor P is used to conduct under the control of the clamping voltage. The clamping voltage of the clamping module in each voltage regulation circuit 2221 is different, but all are greater than the turn-on voltage of the transistor P and less than the maximum output voltage of the power supply 21.

[0089] In this scenario, with the second switch Q2 closed, the clamping module limits the voltage output from the power supply 21 to the clamping voltage and outputs the clamping voltage to the control terminal of transistor P. At this time, transistor P is turned on. The output current of the power supply 21 has two paths. One path is: the output current of the power supply 21 flows through the input terminal and control terminal of transistor P to the output terminal of transistor P. The other path is: the output current of the power supply 21 flows through the second switch Q2 and the clamping module to the control terminal of transistor P. At this time, the voltage at the control terminal of transistor P is the clamping voltage provided by the clamping module. The voltage at the output terminal of transistor P, i.e., the voltage output by the voltage regulation circuit 2221 to PA, is the difference between the clamping voltage Uz and the turn-on voltage Ube of transistor P.

[0090] Further optionally, each voltage regulation circuit 2221 may also include a current limiting device. The current limiting device is disposed between the clamping module 2221 and the second switch Q2. The current limiting device is used to limit the magnitude of the current flowing into the clamping module. For example, the current limiting device can be a diode or a resistor, etc. Wherein, if the current limiting device is a resistor, the resistance value can be in the kΩ range.

[0091] Optionally, the clamping module includes a clamping diode Z. The anode of the clamping diode Z is grounded, and the cathode of the clamping diode Z is connected to the second switch Q2. In some embodiments, the clamping module may include a transistor. The base of the transistor is connected to the second switch Q2, the emitter of the transistor is connected to the control terminal of the transistor P, and the collector of the transistor is grounded.

[0092] For example, such as Figure 6 As shown, the RF module includes two PAs, PA1 3_1 and PA2 3_2, as an example. Correspondingly, the power supply circuit 2 includes two power supply modules 22, namely a first power supply module 22A and a second power supply module 22B, and the clamping module is a clamping diode.

[0093] Specifically, the first power supply module 22A includes a first power supply branch 221A, a second power supply branch 221A-1 and a second power supply branch 221A-2 connected in parallel, for a total of one first power supply branch 221A and two second power supply branches 222A.

[0094] In the first power supply branch 221A, the first switch Q1_1 is connected to the power supply 21 and PA1 3_1 respectively. In the second power supply branch 222A-1, the second switch Q2_1_1 is connected to the power supply 21 and the voltage regulation circuit 2221A-1, which is also connected to PA1 3_1. The voltage regulation circuit 2221A-1 includes a resistor (i.e., a current limiting device) R1_1, a clamping diode Z1_1, and a transistor P1_1. The anode of the diode Z1_1 is grounded. The resistor R1_1 is connected to the second switch Q2_1_1 and the cathode of the clamping diode Z1_1. The cathode of the clamping diode Z1_1 is also connected to the base (i.e., the control terminal) of the transistor P1_1. The collector (i.e., the input terminal) of the transistor P1_1 is connected to the power supply 21, and the emitter (i.e., the output terminal) of the transistor P1_1 is connected to PA1 3_1.

[0095] In the second power supply branch 222A-2, the second switch Q2_1_2 is connected to the power supply 21 and the voltage regulation circuit 2221A-2, which is also connected to PA1 3_1. The voltage regulation circuit 2221A-2 includes a resistor (i.e., a current limiting device) R1_2, a clamping diode Z1_2, and a transistor P1_2. The anode of diode Z1_2 is grounded. Resistor R1_2 is connected to the second switch Q2_1_2 and the cathode of clamping diode Z1_2, respectively. The cathode of clamping diode Z1_2 is also connected to the base (i.e., the control terminal) of transistor P1_2. The collector (i.e., the input terminal) of transistor P1_2 is connected to the power supply 21, and the emitter (i.e., the output terminal) of transistor P1_2 is connected to PA1 3_1.

[0096] In the first power supply module 22A, the clamping voltage Uz1 corresponding to clamping diode Z1_1 is 3V; the clamping voltage Uz1 corresponding to clamping diode Z1_2 is 2V; and the conduction voltage Ube of transistors P1_1 and P1_2 is 0.7V. Based on this, the control module 23 has the following three control states for the first power supply module 22A.

[0097] In the first control scenario, control module 23 controls the first switch Q1_1 to close and the second switches Q2_1_1 and Q2_1_2 to open. At this time, the power supply voltage output by the first power supply module 22A is Uout.

[0098] In the second control scenario, control module 23 controls the first switch Q1_1 to open, the second switch Q2_1_1 to close, and the second switch Q2_1_2 to open. At this time, the supply voltage output by the first power supply module 22A is the difference between the clamping voltage Uz1 of clamping diode Z1_1 and the conduction voltage Ube of transistor P1_1, i.e., 3 - 0.7V = 2.3V.

[0099] In the third control scenario, control module 23 controls the first switch Q1_1 to open, the second switch Q2_1_1 to open, and the second switch Q2_1_2 to close. At this time, the supply voltage output by the first power supply module 22A is the difference between the clamping voltage Uz2 of clamping diode Z1_2 and the forward voltage Ube of transistor P1_2, i.e., 2 - 0.7V = 1.3V.

[0100] Similarly, the second power supply module 22B includes a first power supply branch 221B, a second power supply branch 221B-1 and a second power supply branch 221B-2 connected in parallel, for a total of one first power supply branch 221B and two second power supply branches 222B.

[0101] In the first power supply branch 221B, the first switch Q1_2 is connected to the power supply 21 and PA2 3_2 respectively. In the second power supply branch 222B-1, the second switch Q2_2_1 is connected to the power supply 21 and the voltage regulation circuit 2221B-1, which is also connected to PA2 3_2. The voltage regulation circuit 2221B-1 includes a resistor (i.e., a current limiting device) R1_3, a clamping diode Z1_3, and a transistor P1_3.

[0102] In the second power supply branch 222B-2, the second switch Q2_2_2 is connected to the power supply 21 and the voltage regulation circuit 2221B-2, respectively. The voltage regulation circuit 2221B-2 is also connected to PA2 3_2. The voltage regulation circuit 2221B-2 includes a resistor (i.e., a current limiting device) R1_4, a clamping diode Z1_4, and a transistor P1_4.

[0103] In the second power supply module 22B, the clamping voltage Uz1 corresponding to clamping diode Z1_3 is 3V; the clamping voltage Uz1 corresponding to clamping diode Z1_4 is 2V; and the conduction voltage Ube of transistors P1_3 and P1_4 is 0.7V. Based on this, the control module 23 has the following three control states for the second power supply module 22B.

[0104] In the first control scenario, control module 23 controls the first switch Q1_2 to close, and the second switches Q2_2_1 and Q2_2_2 to open. At this time, the power supply voltage output by the second power supply module 22B is Uout.

[0105] In the second control scenario, control module 23 controls the first switch Q1_2 to open, the second switch Q2_2_1 to close, and the second switch Q2_2_2 to open. At this time, the power supply voltage output by the second power supply module 22B is the difference between the clamping voltage Uz1 of clamping diode Z1_3 and the conduction voltage Ube of transistor P1_3, i.e., 3 - 0.7V = 2.3V.

[0106] In the third control scenario, control module 23 controls the first switch Q1_2 to open, the second switch Q2_2_1 to open, and the second switch Q2_2_2 to close. At this time, the power supply voltage output by the second power supply module 22B is the difference between the clamping voltage Uz2 of clamping diode Z1_4 and the conduction voltage Ube of transistor P1_4, i.e., 2 - 0.7V = 1.3V.

[0107] If we assume that PA1 3_1 requires a voltage U1 of 5V and PA2 3_2 requires a voltage of 1V, then, in Figure 5 In the RF module shown, the control module 23 can be used to control the power supply 21 to output 5V (i.e., the maximum required voltage U1), and control the first switch Q1_1 in the first power supply module 22A connected to PA13_1 (i.e., the first PA) to close, while the second switches Q2_1_1 and Q2_1_2 are open. Furthermore, the control module 23 is also used to determine that the target amplitude of PA23_2 (i.e., the second PA) is 5-1V, and then control the first switch Q1_2 in the second power supply module 22B connected to PA23_2 (i.e., the second PA) to open, the second switch Q2_2_1 to open, and the second switch Q2_2_2 to close. The voltage reduction amplitude of the voltage regulation circuit of the second power supply branch 222B-2 in the second power supply module 22B is 5-1.3V, which is closest to the target amplitude of 4V, while still less than the target amplitude of 2V.

[0108] It should be noted that in some embodiments, the voltage regulation circuit 2221 can also be a low dropout regulator (LDO), etc., and this application does not limit this.

[0109] In some embodiments of this application, the radio frequency module may include a power supply module (PA) module. At least two power supply modules 22 in the power supply circuit 3 provided in the embodiments of this application may be disposed inside the PA module. Optionally, the PA module may include a substrate, and at least two PAs and the power supply circuit 3 disposed on the substrate, to reduce the additional circuit area required by the power supply circuit 3 and reduce the circuit size of the radio frequency module.

[0110] For example, such as Figure 7As shown, the PA module 5 of the RF module and the power supply circuit 2 provided in this embodiment of the application are shown. The PA module 5 includes three PAs disposed on the substrate, namely a low-band (LB) PA 3_3, a mid-band (MB) PA 3_4, and a high-band (HB) PA 3_5. Among them, at least two power supply modules 22 in the power supply circuit 3 can be disposed within the PA module 5.

[0111] The power supply circuit 2 includes, for example, a first power supply module 22A, a second power supply module 22B, and a third power supply module 22C, for a total of three power supply modules 22. The first power supply module 22A is connected to the low-band PA 3_3 and provides power to it. The second power supply module 22B is connected to the middle-band PA 3_4 and provides power to it. The third power supply module 22C is connected to the high-band PA 3_5 and provides power to it.

[0112] Specifically, the first power supply module 22A includes a first power supply branch 221A, a second power supply branch 221A-1, and a second power supply branch 221A-2 connected in parallel, totaling one first power supply branch 221A and two second power supply branches 222A. The first power supply branch 221A includes a first switch Q1_1. The second power supply branch 222A-1 includes a second switch Q2_1_1 and a voltage regulation circuit 2221A-1, which includes one diode D1_1. The second power supply branch 222A-2 includes a second switch Q2_1_2 and a voltage regulation circuit 2221A-2, which includes two diodes D1_2-D1_3 connected in series.

[0113] The second power supply module 22B includes a first power supply branch 221B, a second power supply branch 221B-1, and a second power supply branch 221B-2 connected in parallel, for a total of one first power supply branch 221B and two second power supply branches 222B. The first power supply branch 221B includes a first switch Q1_2. The second power supply branch 222B-1 includes a second switch Q2_2_1 and a voltage regulation circuit 2221B-1, which includes one diode D2_1. The second power supply branch 222B-2 includes a second switch Q2_2_2 and a voltage regulation circuit 2221B-2, which includes two diodes D2_2-D2_3 connected in series.

[0114] The third power supply module 22C includes a first power supply branch 221C, a second power supply branch 221C-1, and a second power supply branch 221C-2 connected in parallel, for a total of one first power supply branch 221C and two second power supply branches 222C.

[0115] In the first power supply branch 221C, the first switch Q1_3 is connected to the power supply 21 and the high-band PA 3_5. In the second power supply branch 222C-1, the second switch Q2_3_1 is connected to the power supply 21 and the voltage regulation circuit 2221C-1, which is also connected to the high-band PA 3_5. The voltage regulation circuit 2221C-1 includes a diode D3_1, the anode of which is connected to the power supply 21, and the cathode of which is connected to the second switch Q2_3_1.

[0116] In the second power supply branch 222C-2, the second switch Q2_3_2 is connected to the power supply 21 and the voltage regulation circuit 2221C-2, which is also connected to the high-band PA 3_5. The voltage regulation circuit 2221C-2 includes two diodes D3_2-D3_3 connected in series. The anode of diode D3_2 is connected to the power supply 21, the cathode of diode D3_2 is connected to the anode of diode D3_3, and the cathode of diode D3_3 is connected to the second switch Q2_3_1.

[0117] The control module 23 is connected to the power supply 21 and the first switch Q1 and second switch Q2 in each power supply module 22. The control module 23 controls the maximum required voltage of the PAs connected to the power supply circuit of the power supply 21, and controls the closing of the first switch Q1 connected to the first PA, and the closing of the second switch Q2 connected to the second PA. The first PA is the PA with the highest required voltage, and the second PA is any PA connected to the power supply module other than the first PA.

[0118] Another example, such as Figure 8 As shown, the PA module 5 of the radio frequency module and the power supply circuit 2 provided in this embodiment of the application are shown. The PA module 5 includes PA1 3_1 and PA2 3_2 disposed on the substrate. At least two power supply modules 22 in the power supply circuit 3 can be disposed within the PA module 5. Figure 8 The power supply circuit 2 in the middle is Figure 6 The power supply circuit shown is 2.

[0119] In this embodiment, the control module can be used to control the maximum required voltage of the PAs connected to the power supply circuit, control the closure of the first switch connected to the first PA with the highest required voltage, and control the closure of the second switch connected to the second PA, where the second PA is any PA other than the first PA among all PAs connected to the power supply circuit. By controlling the closure of the first switch connected to the first PA, the power supply module connected to the first PA can directly output the required voltage of the first PA provided by the power supply through its first power supply branch, thus satisfying the power supply requirements of the first PA. By controlling the closure of the second switch connected to the second PA, the power supply module connected to the second PA can output a power supply voltage, which is reduced by the voltage regulation circuit and is lower than the maximum required voltage, to the second PA through its second power supply branch. This allows the same power supply to provide a smaller power supply voltage to other PAs while satisfying the PA with the maximum power supply requirements, achieving differentiated power supply from a single power source to multiple PAs. Compared to related technologies where a single power supply simultaneously provides the maximum required voltage to different PAs to power each PA, this approach can, to some extent, prevent the PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power supply, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0120] In some embodiments of this application, the control module 23 may also be connected to each PA in the radio frequency module, and is used to obtain the working output power of the PA sent by the base station and the actual power supply voltage output by the power supply circuit to the PA through the first power supply branch or the second power supply branch connected to the PA for each PA in the radio frequency module; determine the target static operating current corresponding to the working output power and the actual power supply voltage according to the correspondence between the output power, the power supply voltage and the static operating current, and the working output power and the actual power supply voltage; and control the static operating current of the PA to be the target static operating current.

[0121] When the RF module is within the coverage area of ​​the base station, it can receive the operating output power allocated by the base station for each communication frequency band. This power is used to require the RF signal output by the RF module for each communication frequency band to conform to the corresponding operating output power. Therefore, the output power of the PA on each communication link needs to conform to the operating output power of the corresponding frequency band of the path link, so as to amplify the RF signal transmitted on the communication link to that operating output power for communication with the base station.

[0122] In the embodiments of this application, the correspondence records the static operating current required by the PA to achieve its output power under multiple different supply voltages. Specifically, the correspondence may include multiple sets of correspondences, each set including multiple correspondences of output power, supply voltage, and static operating current, specifically recording the static operating current required by the PA to achieve the same output power under different supply voltages.

[0123] For example, the relationship between the output power, supply voltage, and quiescent current of a single PA can be shown in Table 1. In Table 1, when the PA's output power Pout is 23dBm and the supply voltage VCC is 4V, the PA's quiescent current is 100A; when the PA's output power Pout is 23dBm and the supply voltage VCC is 3.8V, the PA's quiescent current is 105A, etc.

[0124] Pout VCC ICQ 23dBm 4.0V 100 23dBm 3.8V 105 23dBm 3.6V 110 23dBm 3.4V 115 22dBm 4.0V 100 22dBm 3.8V 105 22dBm 3.6V 110 22dBm 3.4V 115 21dBm 4.0V 100 21dBm 3.8V 105 21dBm 3.6V 110 21dBm 3.4V 115 … … …

[0125] Table 1

[0126] For example, such as Figure 9 As shown, the RF module includes two PAs, PA1 3_1 and PA2 3_2, as an example. The control module 23 can be connected to PA1 3_1 and PA2 3_2 respectively via PIMI.

[0127] If the control module 23 controls the power supply 21 to output 5V (i.e., the maximum required voltage U1), and controls the first switch Q of the first power supply branch 221 in the first power supply module 22A connected to PA1 3_1 (i.e., the first PA) to close, and the second switch Q2 of the second power supply branch 222-1 and the second power supply branch 222-2 to open. Furthermore, the control module 23 is also used to determine that the target amplitude of PA23_2 (i.e., the second PA) is 5-3V, and then controls the second switch Q2 of the second power supply branch 222-2 in the second power supply module 22B connected to PA2 3_2 (i.e., the second PA) to close, the first switch Q of the first power supply branch 221 to open, and the second switch Q2 of the second power supply branch 222-1 to open.

[0128] Based on this, control module 23 is used to obtain, for PA1 3_1, the operating output power of PA1 3_1 sent by the base station, and the actual supply voltage (5V) of 5V supplied by the power supply circuit to PA1 3_1; according to the correspondence between output power, supply voltage, and static operating current, and the operating output power and actual supply voltage, determine the target static operating current ICQ1 corresponding to the operating output power and actual supply voltage; and control the static operating current of PA1 3_1 to be the target static operating current ICQ1. Furthermore, control module 23 is also used to obtain, for PA1 3_2, the operating output power of PA1 3_2 sent by the base station, and the actual supply voltage (3.6V) of 3.6V supplied by the power supply circuit to PA1 3_2; according to the correspondence between output power, supply voltage, and static operating current, and the operating output power and actual supply voltage, determine the target static operating current ICQ2 corresponding to the operating output power and actual supply voltage; and control the static operating current of PA1 3_2 to be the target static operating current ICQ2.

[0129] In some embodiments, the control module 23 can determine the static operating current corresponding to the actual output power and actual supply voltage of the PA based on the recorded correspondence of the static operating current required by the PA to achieve the output power under multiple different supply voltages, the actual operating output power of the PA sent by the base station, and the actual supply voltage of the power supply circuit to the PA through the first or second power supply branch connected to the PA. This allows for adaptive adjustment of the actual static operating current of the PA, ensuring that the actual output power of the PA can meet the operating output power sent by the base station. This effectively improves the reliability of the PA, reduces overall power consumption, and enhances the user experience while supporting multi-band communication.

[0130] In this embodiment, the power supply circuit includes: a power supply, at least two power supply modules, and a control module. Each power supply module corresponds one-to-one with the PA (Power Actuator). A first terminal of each power supply module is connected to the power supply, and a second terminal of the power supply module is connected to the corresponding PA. Each power supply module includes a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch. The second power supply branch includes a second switch and a voltage regulation circuit. The voltage regulation circuit is used to step down the voltage output by the power supply before outputting it to the PA. The control module can control the closing of the first or second switch in the power supply module connected to the PA according to the required voltage of each PA. Closing the first switch allows the power supply to provide the required voltage to the PA, or closing the second switch allows the power supply to provide the PA with the voltage obtained after stepping down by the voltage regulation circuit. This allows the same power supply to provide a smaller supply voltage to other PAs while satisfying the PA with the largest power demand, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power supply simultaneously provides the maximum required voltage to different PAs to power each PA, this approach can, to some extent, prevent the PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power supply, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0131] This application also provides a radio frequency (RF) module, which includes at least two power amplifiers (PAs) and a power supply circuit provided in any embodiment of this application. Optionally, the RF module may include a PA module, which includes a substrate and power supply modules disposed on at least two PAs and in the power supply circuit. In the RF module provided in this application, the power supply circuit includes a power supply, at least two power supply modules, and a control module, with each power supply module corresponding to a PA. The first terminal of each power supply module is connected to the power supply, and the second terminal of the power supply module is connected to the corresponding PA. Each power supply module includes a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch. The second power supply branch includes a second switch and a voltage regulation circuit. The voltage regulation circuit is used to step down the voltage output by the power supply before outputting it to the PA. The control module can be used to control the closing of either the first or second switch in the power supply module connected to each PA according to the required voltage of each PA. Closing the first switch allows the power supply to provide the required voltage to the PA, while closing the second switch allows the power supply to provide the PA with a voltage reduced by a voltage regulation circuit. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach can, to some extent, prevent PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0132] This application also provides an electronic device, which includes the radio frequency module provided in any embodiment of this application. In the electronic device provided in this application, the power supply circuit includes a power supply, at least two power supply modules, and a control module. Each power supply module corresponds one-to-one with a power amplifier (PA). A first terminal of each power supply module is connected to the power supply, and a second terminal of the power supply module is connected to the corresponding PA. Each power supply module includes a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch. The second power supply branch includes a second switch and a voltage regulation circuit. The voltage regulation circuit is used to step down the voltage output by the power supply before outputting it to the PA. The control module is used to control the closing of the first or second switch in the power supply module connected to the PA according to the required voltage of each PA. Closing the first switch allows the power supply to provide the required voltage to the PA, or closing the second switch allows the power supply to provide the PA with the voltage obtained after stepping down by the voltage regulation circuit. This allows the same power supply to provide a smaller supply voltage to other PAs while satisfying the PA with the largest power demand, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power supply simultaneously provides the maximum required voltage to different PAs to power each PA, this approach can, to some extent, prevent the PAs from experiencing performance degradation or even damage due to excessively high supply voltage. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power supply, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0133] Please refer to Figure 10 This document illustrates a flowchart of a control method provided in an embodiment of this application. The control method can be applied to the radio frequency module provided in any embodiment of this application. Figure 10 As shown, the control methods include:

[0134] Step 1001: The control module obtains the required voltage for each PA in the RF module.

[0135] Step 1002: Based on the required voltage of each PA, control the closing of the first or second switch in the power supply module connected to the PA.

[0136] It should be noted that the explanation and implementation of each step in the method embodiment can be referred to the relevant description in the foregoing embodiment, and this application will not repeat it.

[0137] In this embodiment, by controlling the closure of either the first or second switch in the power supply module connected to each PA according to its required voltage, the power supply provides the required voltage to the PA by closing the first switch, or provides the PA with a voltage reduced by a voltage regulation circuit by closing the second switch. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach avoids performance degradation or even damage to PAs due to excessively high supply voltages. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0138] In some embodiments, the process by which the control module controls the closing of a first switch or a second switch in the power supply module connected to each PA according to the required voltage of each PA may include: the control module comparing the required voltage of each PA to determine the maximum required voltage; controlling the power supply to output the maximum required voltage; controlling the first switch in the power supply module connected to the first PA to close and the second switch to open; and controlling the first switch in the power supply module connected to the second PA to open and the second switch to close. Wherein, the first PA is the PA with the highest required voltage. The second PA is any PA connected to the power supply circuit other than the first PA.

[0139] In this embodiment, by controlling the closing of the first switch connected to the first PA, the power supply module connected to the first PA can directly output the required voltage of the first PA through its first power supply branch, thus meeting the power supply requirements of the first PA. Conversely, by controlling the closing of the second switch connected to the second PA, the power supply module connected to the second PA can output a voltage lower than the maximum required voltage after being stepped down by the voltage regulation circuit through its second power supply branch. This allows the same power supply to provide a smaller voltage to other PAs while meeting the maximum power supply requirements of the first PA, achieving differentiated power supply from a single power source to multiple PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach avoids performance degradation or even damage to PAs due to excessively high supply voltages. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0140] Optionally, the number of second power supply branches is at least two; the process of controlling the first switch in the power supply module connected to the second PA to open and the second switch to close may include:

[0141] Obtain the voltage drop amplitude of the voltage regulation circuit in each power supply branch; control the target second switch in the power supply module connected to the second PA to close, the first switch to open, and the second switch other than the target second switch to open, wherein the voltage drop amplitude of the voltage regulation circuit connected to the target second switch is less than the target amplitude and is closest to the target amplitude, and the target amplitude is the difference between the maximum required voltage and the required voltage of the second PA.

[0142] Optionally, the control method further includes:

[0143] For each PA in the RF module, the control module obtains the PA's working output power from the base station, as well as the actual power supply voltage output by the power supply circuit to the PA through the first or second power supply branch connected to the PA.

[0144] The control module determines the target static operating current corresponding to the working output power and the actual supply voltage based on the relationship between the output power, the supply voltage and the static operating current, as well as the working output power and the actual supply voltage.

[0145] The control module controls the static operating current of the PA to the target static operating current. The corresponding relationship records the static operating current required for the PA to reach the output power under multiple different supply voltages.

[0146] It should be noted that the explanation and implementation of each step in the method embodiment can be referred to the relevant description in the foregoing embodiment, and this application will not repeat it.

[0147] In this embodiment, by controlling the closure of either the first or second switch in the power supply module connected to each PA according to its required voltage, the power supply provides the required voltage to the PA by closing the first switch, or provides the PA with a voltage reduced by a voltage regulation circuit by closing the second switch. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach avoids performance degradation or even damage to PAs due to excessively high supply voltages. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0148] The communication switching device in this application embodiment can be a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the device.

[0149] The communication switching device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0150] The communication switching device provided in this application embodiment can achieve... Figure 10 To avoid repetition, the various processes implemented in the method embodiment shown will not be described again here.

[0151] Optionally, such as Figure 11 As shown, this application embodiment also provides a control device 1100, which is applied to the control module in the power supply circuit provided in any embodiment of this application. The control device 1100 includes a processor 1101, a memory 1102, and a radio frequency module provided in this application embodiment. The memory 1102 stores a program or instructions that can run on the processor 1101. When the program or instructions are executed by the processor 1101, they implement the various steps of the above-described control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0152] It should be noted that the electronic devices in the embodiments of this application include the aforementioned mobile electronic devices and non-mobile electronic devices.

[0153] Figure 12This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application. The electronic device 1200 includes, but is not limited to, components such as: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210. The electronic device 1200 also includes the radio frequency module provided in any embodiment of this application.

[0154] Those skilled in the art will understand that the electronic device 1200 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1210 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 12 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0155] The control module is used to obtain the required voltage of each PA in the radio frequency module; and according to the required voltage of each PA, to control the closing of the first or second switch in the power supply module connected to the PA.

[0156] In this embodiment, by controlling the closure of either the first or second switch in the power supply module connected to each PA according to its required voltage, the power supply provides the required voltage to the PA by closing the first switch, or provides the PA with a voltage reduced by a voltage regulation circuit by closing the second switch. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach avoids performance degradation or even damage to PAs due to excessively high supply voltages. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0157] Optionally, the control module is further configured to compare the required voltage of each PA to determine the maximum required voltage; control the power supply to output the maximum required voltage; control the first switch in the power supply module connected to the first PA to close and the second switch to open; and control the first switch in the power supply module connected to the second PA to open and the second switch to close.

[0158] Optionally, the number of the second power supply branches is at least two; the control module is further configured to acquire the voltage drop amplitude of the voltage regulation circuit in each power supply branch; control the target second switch in the power supply module connected to the second PA to close, the first switch to open, and the second switches other than the target second switch to open. The voltage drop amplitude of the voltage regulation circuit connected to the target second switch is less than the target amplitude and closest to the target amplitude, where the target amplitude is the difference between the maximum required voltage and the required voltage of the second PA.

[0159] Optionally, the control module is further configured to:

[0160] For each PA in the radio frequency module, the control module obtains the working output power of the PA sent by the base station, and the actual power supply voltage output by the power supply circuit to the PA through the first power supply branch or the second power supply branch connected to the PA;

[0161] The control module determines the target static operating current corresponding to the working output power and the actual supply voltage based on the correspondence between the output power, the supply voltage, and the static operating current, as well as the working output power and the actual supply voltage.

[0162] The control module controls the static operating current of the PA to the target static operating current, wherein the correspondence records the static operating current required for the PA to achieve the output power under multiple different supply voltages.

[0163] In this embodiment, by controlling the closure of either the first or second switch in the power supply module connected to each PA according to its required voltage, the power supply provides the required voltage to the PA by closing the first switch, or provides the PA with a voltage reduced by a voltage regulation circuit by closing the second switch. This allows the same power supply to provide a smaller supply voltage to other PAs while meeting the maximum power demand of the PA, achieving differentiated power supply from a single power source to at least two PAs. Compared to related technologies where a single power source simultaneously provides the maximum required voltage to different PAs, this approach avoids performance degradation or even damage to PAs due to excessively high supply voltages. It effectively ensures the synchronous and stable operation of multiple PAs powered by a single power source, maintains the synchronous operation of multiple communication links, and enables multi-band communication of electronic devices.

[0164] It should be understood that, in this embodiment, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042. The GPU 12041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0165] The memory 1209 can be used to store software programs and various data. The memory 1209 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1209 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1209 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0166] Processor 1210 may include one or more processing units; optionally, processor 1210 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1210.

[0167] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described control method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0168] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0169] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0170] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0171] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the control method embodiments described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0172] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0173] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0174] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A power supply circuit, characterized in that, The power supply circuit is used to supply power to at least two power amplifiers; the power supply circuit includes: a power supply, at least two power supply modules and a control module, wherein each power supply module corresponds to one of the power amplifiers; The first terminal of each power supply module is connected to the power supply source, and the second terminal of each power supply module is connected to the corresponding power amplifier. Each power supply module includes: a first power supply branch and a second power supply branch connected in parallel. The first power supply branch includes a first switch, which is used to connect the power supply and the power amplifier when closed; The second power supply branch includes a second switch and a voltage regulation circuit connected to the second switch. The second switch is used to connect the power supply, the voltage regulation circuit and the power amplifier when closed. The voltage regulation circuit is used to step down the voltage output by the power supply and then output it to the power amplifier. The control module is connected to the power supply, the first switch and the second switch, and is used to control the first switch or the second switch in the power supply module connected to the power amplifier to close according to the required voltage of each power amplifier.

2. The power supply circuit according to claim 1, characterized in that, The number of the second power supply branch in the power supply module is at least two; The voltage regulation circuit in each of the second power supply branches is used to step down the voltage output by the power supply by different magnitudes, and output the stepped-down voltage to the power amplifier connected to the voltage regulation circuit.

3. The power supply circuit according to claim 2, characterized in that, Each of the voltage regulation circuits includes a different number of voltage dividers, and in the case where a single voltage regulation circuit includes at least two voltage dividers, the at least two voltage dividers are connected in series.

4. The power supply circuit according to claim 3, characterized in that, The voltage divider device is a diode.

5. The power supply circuit according to claim 2, characterized in that, Each of the voltage regulation circuits includes: a clamping module and a transistor; The clamping module is connected to the control terminal of the second switch and the transistor respectively, and is used to limit the voltage output by the power supply to the clamping voltage when the second switch is closed, and output the clamping voltage to the control terminal of the transistor. The clamping voltage of the clamping module in each voltage regulation circuit is different. The input terminal of the transistor is connected to the power supply, and the output terminal of the transistor is connected to the power amplifier, which is used to turn on under the control of the clamping voltage.

6. The power supply circuit according to claim 5, characterized in that, Each of the voltage regulation circuits further includes: a current limiting device; The current limiting device is disposed between the clamping module and the second switching device to limit the amount of current flowing into the clamping module.

7. The power supply circuit according to claim 5 or 6, characterized in that, The clamping module includes a clamping diode; the anode of the clamping diode is grounded, and the cathode of the clamping diode is connected to the control terminal of the second switching device and the transistor, respectively.

8. A radio frequency module, characterized in that, The radio frequency module includes: at least two power amplifiers, and a power supply circuit as described in any one of claims 1 to 7.

9. An electronic device, characterized in that, The electronic device includes the radio frequency module as described in claim 8.

10. A control method, characterized in that, Applied to the radio frequency module of claim 8, or the electronic device of claim 9, the method comprises: The control module obtains the required voltage of each power amplifier in the radio frequency module; The control module controls the first or second switch in the power supply module connected to each power amplifier to close according to the required voltage of each power amplifier.

11. The method according to claim 10, characterized in that, The step of controlling the closing of the first or second switch in the power supply module connected to each power amplifier according to the required voltage of each power amplifier includes: The control module compares the required voltage of each of the power amplifiers to determine the maximum required voltage. The control module controls the power supply to output the maximum required voltage; The control module controls the first switch in the power supply module connected to the first power amplifier to close and the second switch to open, and controls the first switch in the power supply module connected to the second power amplifier to open and the second switch to close. The first power amplifier is the power amplifier with the largest voltage requirement, and the second power amplifier is the power amplifier other than the first power amplifier among all the power amplifiers connected to the power supply circuit.

12. The method according to claim 11, characterized in that, The number of the second power supply branches is at least two; the first switch in the power supply module connected to the second power amplifier being open and the second switch being closed includes: Obtain the voltage reduction amplitude of the voltage regulation circuit in each of the power supply branches; The target second switch in the power supply module connected to the second power amplifier is closed, the first switch is opened, and all other second switches except the target second switch are opened. Wherein, the difference between the voltage drop amplitude of the voltage regulation circuit connected to the target second switch and the target amplitude is less than the target amplitude threshold, and the target amplitude is the difference between the maximum required voltage and the required voltage of the second power amplifier.

13. The method according to any one of claims 10 to 12, characterized in that, The method further includes: The control module acquires the operating output power of the power amplifier sent by the base station for each power amplifier in the radio frequency module, and the actual power supply voltage output by the power supply circuit to the power amplifier through the first power supply branch or the second power supply branch connected to the power amplifier. The control module determines the target static operating current corresponding to the working output power and the actual supply voltage based on the correspondence between the output power, the supply voltage, and the static operating current, as well as the working output power and the actual supply voltage. The control module controls the quiescent operating current of the power amplifier to be the target quiescent operating current. The correspondence records the quiescent operating current required for the power amplifier to achieve the output power under multiple different supply voltages.

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