Over-current protection circuit, radio frequency front-end module, power supply device and electronic equipment

Abstract

The invention provides an overcurrent protection circuit, a radio frequency front-end module, a power supply device and electronic equipment, the overcurrent protection circuit comprises a switch module, a detection module, a first timing module and a control module, the switch module is used for connecting the power supply module and a power utilization module in the radio frequency front-end module; the detection module is used for detecting the output current of the power supply module, and is also used for outputting a first trigger signal when the output current is greater than a first preset current threshold value; the first timing module performs timing when receiving the first trigger signal so as to obtain a first duration; the control module is used for controlling the switch module to be switched off when the first duration is larger than or equal to a first time threshold value so as to cut off power supply of the power module to the power utilization module, and the first time threshold value is larger than the single surge pulse duration of the power module. The over-current protection circuit can improve the reliability of the radio frequency front-end module.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to an overcurrent protection circuit, a radio frequency front-end module, a power supply device and an electronic device. Background Art

[0002] In the field of radio frequency technology, when a power module is used to power the power module in the radio frequency front-end module, it is usually necessary to take overcurrent protection measures, that is, to disconnect the power supply of the power module when it is judged that the power supply current is overcurrent. However, during the power-on or calibration process of the power module, surge current is prone to occur. This surge current can easily trigger the overcurrent protection of the radio frequency front-end module, resulting in power failure, which greatly affects the normal operation of the radio frequency front-end module. Summary of the invention

[0003] The main purpose of this application is to provide an overcurrent protection circuit, a RF front-end module, a power supply device and an electronic device, aiming to solve the problem that surge current easily triggers the overcurrent protection of the RF front-end module, thereby affecting the normal operation of the RF front-end module.

[0004] In a first aspect, the present application provides an overcurrent protection circuit, the overcurrent protection circuit comprising a switch module, a detection module, a first timing module and a control module; wherein:

[0005] The switch module is used to connect the power module and the power module in the RF front-end module, and the power module is used to supply power to the power module;

[0006] The detection module is used to connect to the power module to detect the output current of the power module; the detection module is also used to output a first trigger signal when the output current is greater than a first preset current threshold;

[0007] The first timing module is connected to the detection module, and the first timing module performs timing upon receiving the first trigger signal to obtain a first duration, where the first duration is a duration during which the output current is greater than the first preset current threshold;

[0008] The control module is connected to the switch module and the first timing module respectively; the control module is used to control the switch module to disconnect when the first duration is greater than or equal to a first time threshold, so as to cut off the power supply from the power supply module to the power consumption module, wherein the first time threshold is greater than the duration of a single surge pulse of the power supply module.

[0009] In a second aspect, an embodiment of the present application further provides an overcurrent protection circuit, the overcurrent protection circuit comprising a switch module, a detection module and a control module; wherein:

[0010] The switch module is used to connect the power module and the power amplifier, and the power module is used to supply power to the power amplifier;

[0011] The detection module is used to connect to the power module to detect the output current of the power module; the detection module is also used to output a first trigger signal when the output current is greater than a first preset current threshold;

[0012] The control module is used to determine a first duration that the output current is greater than the first preset current threshold according to the first trigger signal, and when the first duration is greater than or equal to a first time threshold, control the switch module to disconnect so as to cut off the power supply from the power supply module to the power amplifier, wherein the first time threshold is greater than 5μs.

[0013] In a third aspect, an embodiment of the present application further provides a radio frequency front-end module, characterized in that the radio frequency front-end module includes a power module and an overcurrent protection circuit as described in the embodiment of the present application, and the overcurrent protection circuit is used to provide overcurrent protection for the power module.

[0014] In a fourth aspect, an embodiment of the present application also provides a power supply device, characterized in that it includes a power supply module and an overcurrent protection circuit as described in the embodiment of the present application, wherein the overcurrent protection circuit is used to connect the power supply module and a power-consuming module in the RF front-end module, and the power supply module is used to supply power to the power-consuming module.

[0015] In a fourth aspect, an embodiment of the present application also provides an electronic device, comprising a power supply module, a radio frequency front-end module, and an overcurrent protection circuit as described in the embodiment of the present application, wherein the radio frequency front-end module comprises at least one power-consuming module, the power supply module is used to supply power to the power-consuming module, and the overcurrent protection circuit is used to provide overcurrent protection for the power supply module and / or the power-consuming module.

[0016] The overcurrent protection circuit provided by the embodiment of the present application includes a switch module, a detection module, a first timing module and a control module, wherein the switch module is used to connect the power module and the power module in the RF front-end module; the detection module is used to detect the output current of the power module, and is also used to output a first trigger signal when the output current is greater than a first preset current threshold; the first timing module performs timing when receiving the first trigger signal to obtain a first duration; the control module is used to control the switch module to disconnect when the first duration is greater than or equal to the first time threshold, so as to cut off the power supply from the power module to the power module, wherein the first time threshold is greater than the single surge pulse duration of the power module. The overcurrent protection circuit provided by the embodiment of the present application can detect the first duration when the output current of the power module is greater than the first preset current threshold, and cut off the power supply from the power module to the power module when the first duration is greater than or equal to the first time threshold, so that when the output current is a transient current such as a surge current, it is not easy to cause the false triggering of the overcurrent protection, and ensure that the RF front-end module can work normally when a transient overcurrent such as a surge current occurs, thereby improving the reliability of the RF front-end module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A diagram of an application scenario in which a power module provides power to a power-consuming module, provided in an embodiment of the present application;

[0019] Figure 2a and Figure 2b A circuit diagram of an implementation of an overcurrent protection circuit provided in an embodiment of the present application;

[0020] Figure 3a and Figure 3b A circuit diagram of another implementation of the overcurrent protection circuit provided in an embodiment of the present application;

[0021] Figure 4a and Figure 4b A circuit diagram of another implementation of the overcurrent protection circuit provided in an embodiment of the present application;

[0022] Figure 5 A circuit diagram of an implementation of a detection module provided in an embodiment of the present application;

[0023] Figure 6A circuit diagram of another implementation of the detection module provided in an embodiment of the present application;

[0024] Figure 7 A circuit diagram of an implementation of a first timing module provided in an embodiment of the present application;

[0025] Figure 8a and Figure 8b A circuit diagram of an implementation of another overcurrent protection circuit provided in an embodiment of the present application.

[0026] Fig. 9 A circuit diagram of an implementation of a control module provided in an embodiment of the present application;

[0027] Fig.10 A schematic block diagram of a radio frequency front-end module provided in an embodiment of the present application;

[0028] Fig.11 A schematic block diagram of a power supply device provided in an embodiment of the present application;

[0029] Fig.12 A schematic block diagram of an electronic device provided in an embodiment of the present application.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] It should be noted that the terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish similar objects rather than to describe a specific order or sequence.

[0032] It should also be noted that the method disclosed in the embodiments of the present application or the method shown in the flowchart includes one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchangeable with each other, and some of the steps can also be deleted.

[0033] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] Figure 1 This is an application scenario diagram of a power module providing power to a power module according to an embodiment of the present application. Figure 1As shown, in the field of radio frequency technology, a power module 10 is required to supply power to a power module 20 in a radio frequency front-end module. In order to prevent the power module from being damaged due to excessive current, overcurrent protection measures are usually required, such as providing an overcurrent protection circuit 100 between the power module 10 and the power module 20, thereby providing overcurrent protection for the power module 10 and / or the power module 20.

[0035] In the related art, surge current is likely to occur during the power-on or calibration process of the power module 10. The surge current is likely to trigger the overcurrent protection mechanism of the overcurrent protection circuit 100, thereby disconnecting the power supply between the power module 10 and the power module 20, greatly affecting the normal operation of the power module 20 in the RF front-end module.

[0036] Next, combine Figure 2a and Figure 2b An overcurrent protection circuit provided in an embodiment of the present application is introduced. The overcurrent protection circuit can be arranged on one side of the power module 10, for example, integrated with the power module 10 in a power product; it can also be arranged on one side of the power module 20, for example, integrated with the power module 20 in a radio frequency front-end module. The overcurrent protection circuit can ensure the normal operation of the power module 20 in the radio frequency front-end module when an instantaneous overcurrent such as a surge current occurs, thereby improving the reliability of the radio frequency front-end module.

[0037] like Figure 2a and Figure 2b As shown, Figure 2a and Figure 2b A circuit diagram of an implementation of an overcurrent protection circuit provided in an embodiment of the present application.

[0038] Specifically, the overcurrent protection circuit 100 includes a switch module 110 , a detection module 120 , a first timing module 130 and a control module 140 .

[0039] Among them, the switch module 110 is used to connect the power module 10 and the power module 20 in the RF front-end module, and the power module 10 is used to supply power to the power module 20. Specifically, the power module 10 is used to supply power to the power module 20 when the switch module 110 is turned on. The detection module 120 is used to connect the power module 10 to detect the output current of the power module 10. The detection module 120 is also used to output a first trigger signal when the output current is greater than a first preset current threshold.

[0040] like Figure 2a As shown, the switch module 110 can be connected in series with the detection module 120 between the power module 10 and the power module 20. Figure 2bAs shown, the switch module 110 can be connected between the power module 10 and the power module 20. One end of the detection module 120 is connected between the power module 10 and the switch module 110, and the other end of the detection module 120 is connected to the first timing module 130.

[0041] It should be noted that the power module 10 may include an AC-DC conversion unit, a DC-DC conversion unit, an AC-AC conversion unit, an inverter unit, a buck-boost unit, an energy storage device, etc. The energy storage device is, for example, one or more batteries. The power module 20 may include at least one of a power amplifier, a power attenuator, a power synthesizer, and a power divider. The first preset current threshold can be set according to the maximum rated current of the power module 20. The maximum rated currents of different power modules 20 are different, and the corresponding first preset current thresholds may also be different. When there are multiple power modules 20, the first preset current threshold can be determined according to the minimum value of the maximum rated currents of the multiple power modules 20.

[0042] The first timing module 130 is connected to the detection module 120. The first timing module 130 performs timing upon receiving the first trigger signal to obtain a first duration, which is the duration during which the output current is greater than the first preset current threshold. The control module 140 is connected to the switch module 110 and the first timing module 130 respectively; the control module 140 is used to control the switch module 110 to disconnect when the first duration is greater than or equal to the first time threshold, so as to cut off the power supply from the power module 10 to the power module 20, wherein the first time threshold is greater than the duration of a single surge pulse of the power module 10.

[0043] It should be noted that surge (also called surge) refers to a peak value that exceeds the stable value in the circuit, including surge voltage and surge current. The causes include load connection or disconnection, power switching, equipment startup, etc. Surges usually occur in a time unit of microseconds or nanoseconds, so the surge pulse duration can also be measured in microseconds or nanoseconds. For example, the surge pulse duration can be 2 microseconds or 500 nanoseconds. The duration of a single surge pulse, for example, refers to the width of a single surge pulse, which is usually a few microseconds.

[0044] In the embodiment of the present application, when a transient overcurrent such as a surge current occurs, the overcurrent protection circuit 100 does not immediately cut off the power supply from the power module 10 to the power module 20, but first obtains the first duration that the output current of the power module 10 is greater than the first preset current threshold, and the control module 140 determines that the first duration is greater than or equal to the first time threshold, and controls the switch module 110 to disconnect, so as to cut off the power supply from the power module 10 to the power module 20. Since the first time threshold is greater than the duration of a single surge pulse of the power module 10, it is not easy to cause the overcurrent protection circuit 100 to be falsely triggered by the surge current, thereby ensuring that the RF front-end module can work normally when a transient overcurrent such as a surge current occurs. Therefore, it can solve the problem that the surge current easily triggers the overcurrent protection of the RF front-end module, thereby affecting the normal operation of the RF front-end module.

[0045] Exemplarily, the value range of the first time threshold includes (5μs, 50μs); the value range of the first preset current threshold includes (3A, 5A). In the field of radio frequency technology, the surge current of the power module 10 is usually in the microsecond level and less than 5 microseconds, so the value range of the first time threshold can be between 5μs and 50μs, and the value range of the first preset current threshold can be between 3A and 5A according to the maximum rated current of the power module. Within the value range of the first time threshold, the output current less than the first preset current threshold will not cause damage to the power module 20. However, when the control module 140 detects that the output current exceeds the first preset current threshold (such as 3A) for a duration exceeding the first time threshold (such as 50μs), in order to avoid damage to the power module 20, it is necessary to control the switch module 110 to disconnect to cut off the power supply from the power module 10 to the power module 20.

[0046] Taking the power device 20 as a power amplifier as an example, in the related art, the overcurrent protection current threshold set for the power amplifier is usually lower than 3A, and once the current is detected to exceed 3A, the power supply to the power amplifier will be immediately cut off. However, in the process of powering on the power module 10, a surge current exceeding 3A may be generated at the moment the power module 10 is just turned on, and the related art easily misjudges it as overcurrent, resulting in power-on failure. The inventor of the present application has found through research that the general surge current lasts only a few microseconds, and within a few microseconds or even tens of microseconds, a current of 3A will not cause damage to the power amplifier. Therefore, in addition to setting up a detection module 120 to detect the output current of the power module 10, the present application also sets a first time threshold that is greater than the duration of a single surge pulse of the power module 10 to exclude instantaneous overcurrent caused by power surge.

[0047] Exemplarily, in the scenario where the electrical device is a power amplifier, the value range of the first preset current threshold can be between 3A and 5A, and the value range of the first time threshold can be between 5μs and 50μs, so that it is not easy to cause false triggering of overcurrent protection due to surge current, thereby ensuring that the RF front-end module can work normally when instantaneous overcurrent such as surge current occurs, thereby improving the reliability of the RF front-end module.

[0048] In one embodiment, if Figure 2a and Figure 2b As shown, the detection module 120 is also used to output a second trigger signal when the output current is greater than the second preset current threshold. The first timing module 130 also performs timing when receiving the second trigger signal to obtain a second duration, and the second duration is the duration when the output current is greater than the second preset current threshold. The control module 140 is also used to control the switch module 110 to disconnect when the second duration is greater than or equal to the second time threshold, so as to cut off the power supply module 10 to the power module 20; wherein the second preset current threshold is less than the first preset current threshold, and the second time threshold is greater than the first time threshold.

[0049] It should be noted that, since the second preset current threshold is less than the first preset current threshold, when the output current of the power module 10 is greater than the second preset current threshold, in order to avoid damage to the power module 20, the overcurrent protection may also be triggered. The specific triggering condition may be that the second duration of the output current being greater than the second preset current threshold is greater than or equal to the second time threshold, wherein the second time threshold is greater than the first time threshold.

[0050] That is to say, when the output current of the power supply module 10 is greater than the second preset current threshold, if the control module 140 determines that the second duration that the output current is greater than the second preset current threshold is greater than the second time threshold, a disconnection instruction can be sent to the switch module 110. The switch module 110 disconnects upon receiving the disconnection instruction to cut off the power supply from the power supply module 10 to the power module 20, thereby not easily causing false triggering of the overcurrent protection, thereby improving the reliability of the overcurrent protection provided by the overcurrent protection circuit 100.

[0051] Exemplarily, the value range of the second time threshold includes (50μs, 1ms); the value range of the second preset current threshold includes (2A, 3A). Among them, the second preset current threshold needs to be less than the first preset current threshold, and the value range of the first preset current threshold can be between 3A and 5A. The second time threshold needs to be greater than the first time threshold, and the value range of the first time threshold can be between 5μs and 50μs. That is to say, within the value range of the second time threshold, the output current between the first preset current threshold and the second preset current threshold will not cause damage to the power module 20. However, when the control module 140 detects that the output current exceeds the second preset current threshold (such as 2A) for a duration that exceeds the second time threshold (such as 1ms), it is necessary to control the switch module 110 to disconnect to cut off the power supply from the power module 10 to the power module 20, thereby achieving overcurrent protection for the power module 20.

[0052] Taking the power device 20 as a power amplifier as an example, in the process of the power module 10 supplying power to the power amplifier, the overcurrent protection circuit 100 can also provide overcurrent protection below 3A, but the second duration of the output current being greater than the second preset current threshold must be greater than the first duration of more than 3A before it can be triggered. Therefore, the value range of the second preset current threshold can be between 2A and 3A, and the value range of the second time threshold can be between 50μs and 1ms, so that it is not easy to cause false triggering of overcurrent protection due to instantaneous current, ensuring that the RF front-end module can work normally when an instantaneous overcurrent occurs, thereby improving the reliability of the RF front-end module.

[0053] In one embodiment, if Figure 3a and Figure 3b As shown, the overcurrent protection circuit 100 further includes a second timing module 150, which is used to time when the switch module 110 is disconnected when the output current is greater than the second preset current threshold and less than the first preset current threshold, so as to obtain the disconnection time of the switch module 110. The control module 140 is connected to the second timing module 150, and the control module 140 is also used to control the switch module 110 to be turned on when the disconnection time is greater than or equal to the second preset time, so as to restore the power supply from the power module 10 to the power module 20.

[0054] It should be noted that the control module 140 can send a timing instruction to the second timing module 150 when the switch module 110 is disconnected when the output current is greater than the second preset current threshold and less than the first preset current threshold. The second timing module 150 starts timing after receiving the timing instruction to obtain the disconnection time of the switch module 110. After the disconnection time is greater than or equal to the second preset time, the switch module 110 can be controlled to be turned on, so as to restore the power supply from the power module 10 to the power module 20, and the second preset time is, for example, 5ms. In this case, the power supply to the power module 20 can be automatically restored, so that the power module 20 can work normally, thereby improving the reliability of the RF front-end module.

[0055] That is to say, when the output current of the power module 10 is greater than the second preset current threshold and less than the first preset current threshold, if the triggering condition of the overcurrent protection is met and the switch module 110 is disconnected, it may be caused by excessive power or circuit instability at the time, which can be solved after the circuit is restarted. Therefore, after the disconnection time of the switch module 110 is greater than or equal to the second preset time, the switch module 110 can be controlled to turn on, thereby restoring the power supply from the power module 10 to the power module 20.

[0056] In some embodiments, for example, when the output current of the power module 10 is greater than the first preset current threshold, if the triggering condition of the overcurrent protection is met and the switch module 110 is disconnected, it may be caused by a circuit short circuit or other faults. The problem may still exist after the circuit is restarted, and multiple restarts may cause damage to the power module 20. Therefore, the power supply to the power module 20 may not be restored.

[0057] In one embodiment, if Figure 2a and Figure 2b As shown, the detection module 120 is also used to output a third trigger signal when the output current is greater than a third preset current threshold; the first timing module 130 also performs timing when receiving the third trigger signal to obtain a third duration, and the third duration is the duration when the output current is greater than the third preset current threshold; the control module 140 is also used to control the switch module 110 to disconnect when the third duration is greater than or equal to the third time threshold, so as to cut off the power supply from the power module 10 to the power module 20; wherein the third preset current threshold is greater than the first preset current threshold, and the third time threshold is less than the first time threshold.

[0058] It should be noted that when the output current of the power module 10 is greater than the third preset current threshold, the overcurrent protection can also be triggered. The specific triggering condition can be that the third duration of the output current greater than the third preset current threshold is greater than or equal to the third time threshold. In this case, the switch module 110 can be controlled to disconnect to cut off the power supply from the power module 10 to the power module 20. Since the third time threshold is less than the first time threshold, the overcurrent protection can be triggered faster than the situation where the output current is greater than the first preset current threshold, thereby improving the timeliness of the overcurrent protection and effectively preventing the power module 20 from being damaged.

[0059] That is to say, when the output current of the power supply module 10 is greater than the third preset current threshold, if the control module 140 determines that the third duration that the output current is greater than the third preset current threshold is greater than the third time threshold, a disconnection instruction can be sent to the switch module 110. The switch module 110 disconnects upon receiving the disconnection instruction, thereby timely cutting off the power supply from the power supply module 10 to the power module 20, which is not likely to cause damage to the power module 20, thereby improving the reliability of the overcurrent protection circuit 100.

[0060] Exemplarily, the value range of the third time threshold includes (0μs, 5μs); the value range of the third preset current threshold includes (5A, 10A). Among them, the third preset current threshold is greater than the first preset current threshold, and the value range of the first preset current threshold can be between 3A and 5A. The third time threshold needs to be less than the first time threshold, and the value range of the first time threshold can be between 5μs and 50μs. That is to say, within the value range of the third time threshold, the output current greater than the third preset current threshold will not cause damage to the power module 20. However, when the control module 140 detects that the output current exceeds the third preset current threshold (such as 5A) for a duration that exceeds the third time threshold (such as 5μs), the control switch module 110 is disconnected to cut off the power supply from the power module 10 to the power module 20.

[0061] Taking the power consumption device 20 as a power amplifier as an example, in the process of the power supply module 10 supplying power to the power amplifier, the overcurrent protection circuit 100 can provide overcurrent protection of more than 5A, and its corresponding third duration is less than the first duration of less than 5A, that is, in the case of a large current, the overcurrent protection can be triggered more quickly to improve the safety of the power consumption module 20. Therefore, the value range of the third preset current threshold can be between 5A and 10A, and the value range of the second time threshold can be between 0μs and 5μs, so as to ensure that the overcurrent protection can be triggered in time, effectively avoid damage to the power consumption module 20, and thus avoid affecting the service life of the power consumption module 20.

[0062] In one embodiment, if Figure 4a and Figure 4b As shown, the detection module 120 is also used to output a fourth trigger signal when the output current is greater than a fourth preset current threshold; the control module 140 is also connected to the detection module 120, and the control module 140 is also used to control the switch module 110 to disconnect when the fourth trigger signal is detected, so as to cut off the power supply from the power module 10 to the power module 20; wherein the fourth preset current threshold is greater than the third preset current threshold.

[0063] That is to say, when the control module 140 receives the fourth trigger signal indicating that the output current exceeds the fourth preset current threshold, there is no need to judge the duration of the output current. The switch module 110 can be directly controlled to disconnect to cut off the power supply from the power module 10 to the power module 20, thereby ensuring the safety of the power module 20 in the RF front-end module.

[0064] Exemplarily, the value range of the fourth preset current threshold is greater than or equal to 10A. Among them, the fourth preset current threshold is greater than the third preset current threshold, and the value range of the third preset current threshold can be between 5A and 10A. That is to say, when the output current is greater than the fourth preset current threshold, it is easy to cause damage to the power module 20. Therefore, when it is detected that the output current exceeds the fourth preset current threshold (such as 10A), the switch module 110 can be directly controlled to disconnect to cut off the power supply from the power module 10 to the power module 20, thereby ensuring the timeliness of the overcurrent protection, and can effectively prevent the power module 20 from being damaged, so that the reliability of the overcurrent protection circuit 100 can be greatly improved.

[0065] In one embodiment, a plurality of preset current intervals are provided between the third preset current threshold and the fourth preset current threshold, each preset current interval is provided with a corresponding duration threshold, and the duration threshold is negatively correlated with the current threshold in the preset current interval.

[0066] Among them, Figure 4a and Figure 4b As shown, the detection module 120 is also used to output a fifth trigger signal when the output current is in any preset current interval; the first timing module 130 also performs timing when receiving the fifth trigger signal; the control module 140 is also used to control the switch module 110 to disconnect when the timing duration of the first timing module 130 is greater than or equal to the duration threshold corresponding to the preset current interval in which the output current is located, so as to cut off the power supply from the power supply module 10 to the power consumption module 20.

[0067] It should be noted that a plurality of preset current intervals can be flexibly set according to actual conditions, and the duration threshold corresponding to each preset current interval can also be set according to actual conditions. The larger the current threshold in each preset current interval, the smaller the corresponding duration threshold. The smaller the current threshold in each preset current interval, the larger the corresponding duration threshold. By setting a plurality of preset current intervals and the duration threshold corresponding to each preset current interval, the triggering condition for disconnection of the switch module 110 can be flexibly controlled, and the overcurrent protection function can be more effectively realized, thereby improving the reliability of the overcurrent protection circuit 100.

[0068] Exemplarily, the third preset current threshold is 5A, and the fourth preset current threshold is 10A. There are three preset current intervals between 5A and 10A, namely (5A, 7A), (7A, 9A), and (9A, 10A), and their corresponding duration thresholds are 3μs, 2μs, and 1μs, respectively. When the output current is in the first preset current interval (5A, 7A), if the timing duration of the first timing module 130 is greater than or equal to 3μs, the control switch module 110 is disconnected to cut off the power supply from the power module 10 to the power module 20. When the output current is in the second preset current interval (7A, 9A), if the timing duration of the first timing module 130 is greater than or equal to 2μs, the control switch module 110 is disconnected to cut off the power supply from the power module 10 to the power module 20. When the output current is in the second preset current interval (9A, 10A), if the timing duration of the first timing module 130 is greater than or equal to 1 μs, the switch module 110 is controlled to be disconnected to cut off the power supply from the power module 10 to the power consumption module 20. In other words, for a plurality of consecutive preset current intervals, the larger the current threshold in the preset current interval, the smaller the corresponding duration threshold, so the overcurrent protection can be triggered faster to improve the safety of the power consumption module 20.

[0069] In one embodiment, if Figure 5As shown, the detection module 120 includes a conversion unit 121 and a comparison unit 122; the input terminal VCC_IN of the conversion unit 121 is used to connect the power module 10, and the conversion unit 121 is used to convert the output current of the power module 10 into a voltage signal; the first input terminal of the comparison unit 122 is connected to the output terminal of the conversion unit 121, the second input terminal of the comparison unit 122 is used to connect the reference voltage signal Vref, and the output terminal of the comparison unit 122 is connected to the first timing module 130. When the voltage signal is greater than or equal to the reference voltage signal Vref, the comparison unit 122 outputs a trigger signal OCP_Max to the first timing module 130. Optionally, when the reference voltage signal Vref is a fixed voltage, the trigger signal OCP_Max can be a high level or a low level. When the reference voltage signal Vref includes multiple switchable voltages, the trigger signal OCP_Max can be a set of at least 2-bit code values ​​consisting of 1 representing a high level and 0 representing a low level, such as 00, 01, 10, 11.

[0070] The voltage value of the reference voltage signal Vref may be determined according to a first preset current threshold, and the trigger signal OCP_Max may be a first trigger signal. For example, when the voltage signal output by the conversion unit 121 is greater than the reference voltage signal Vref, it may indicate that the output current is greater than the first preset current threshold. When the voltage signal output by the conversion unit 121 is less than or equal to the reference voltage signal Vref, it may indicate that the output current is less than or equal to the first preset current threshold.

[0071] Similarly, the voltage value of the reference voltage signal Vref can be determined according to the second preset current threshold, the third preset current threshold or the fourth preset current threshold, and the corresponding trigger signal OCP_Max can include the second trigger signal, the third trigger signal or the fourth trigger signal. In the scenario where multiple preset current intervals are set between the third preset current threshold and the fourth preset current threshold, the trigger signal OCP_Max can also include a fifth trigger signal. Corresponding to different preset current thresholds, the voltage value of the reference voltage signal Vref can be different.

[0072] It should be noted that the output current is converted into a voltage signal by the conversion unit 121, and then the voltage signal is compared with one or more reference voltage signals Vref by the comparison unit 122, so as to accurately determine whether the output current is greater than the preset current threshold, thereby improving the detection accuracy of the detection module 120.

[0073] For example, Figure 6As shown, the conversion unit 121 includes a first transistor TR1, a second transistor TR2, a third transistor TR3, an operational amplifier OP and a first resistor R; the first ends of the first transistor TR1 and the second transistor TR2 are used to connect to the power module 10; the second end of the first transistor TR1 is connected to the first input end of the operational amplifier OP, the second end of the second transistor TR2 is connected to the second input end of the operational amplifier OP, and the second end of the second transistor TR2 is also used to connect to the power module 20; the first end of the third transistor TR3 is connected to the second end of the second transistor TR2, the second end of the third transistor TR3 serves as the output end of the conversion unit 121, the second end of the third transistor TR3 is also grounded R through the first resistor, and the controlled end of the third transistor TR3 is connected to the output end of the operational amplifier OP.

[0074] The first transistor TR1, the second transistor TR2, and the third transistor TR3 may be unipolar transistors. For example, the first transistor TR1, the second transistor TR2, and the third transistor TR3 may be MOS transistors (metal-oxide semiconductor field effect transistors), transistors based on SOI (Silicon-On-Insulator, silicon on insulating substrate) technology, high electron mobility transistors, pseudo-matched high electron mobility transistors, etc.

[0075] It should be noted that the conversion unit 121 can use the first resistor R to convert the output current I of the power module 10 into a voltage signal Vdet (Vdet=I*R). In some examples, the second end of the first transistor TR1 can also be connected to one end of the switch module 110, so that the detection module 120 supplies power to the power module 20 via the switch module 110.

[0076] Exemplarily, the first transistor TR1, the second transistor TR2, and the third transistor TR3 are used as MOS transistors for illustration, the first end of the first transistor TR1, the second transistor TR2, and the third transistor TR3 may be a source, the second end of the first transistor TR1, the second transistor TR2, and the third transistor TR3 may be a drain, and the controlled end of the first transistor TR1, the second transistor TR2, and the third transistor TR3 may be a gate. The controlled end of the first transistor TR1 and the second transistor TR2 may be connected to the control module 130, and the control module 130 controls the first transistor TR1 and the second transistor TR2 by sending a control signal to the controlled end of the first transistor TR1 and the second transistor TR2.

[0077] For example, Figure 6As shown, the comparison unit 122 may include a comparator VC, and the voltage signal Vdet is compared with the reference voltage signal Vref through the comparator VC. If the voltage signal Vdet is greater than the reference voltage signal Vref, the comparator VC outputs a trigger signal OCP_Max.

[0078] The number of the comparison units 122 may be one or more. For example, when there are multiple preset current thresholds, the number of the comparison units 122 may be greater than or equal to the number of preset current thresholds, and the preset current threshold may include at least one of the first preset current threshold, the second preset current threshold, the third preset current threshold, and the fourth preset current threshold. When there are multiple comparison units 122, there may also be multiple first timing modules 130 connected to the multiple comparison units 122, for example, each comparison unit 122 is respectively connected to a first timing module 130, so that different first timing modules 130 can respectively time the current duration in different output current scenarios.

[0079] It should be noted that, when there are multiple comparison units 122, the multiple comparison units 122 can respectively output different trigger signals OCP_Max to the corresponding first timing module 130, and the different trigger signals OCP_Max may include at least one of the aforementioned first trigger signal, the second trigger signal, the third trigger signal, the fourth trigger signal, and the fifth trigger signal. Different trigger signals OCP_Max can be a set of code values ​​of at least 2 bits consisting of 1 representing a high level and 0 representing a low level. When there are multiple trigger signals OCP_Max, a target trigger signal for characterizing the highest output current can be selected from the multiple trigger signals OCP_Max. When multiple comparison units 122 are arranged in order from small to large corresponding to the preset current threshold, the target trigger signal can be the trigger signal with the largest code value.

[0080] Therefore, when there are multiple trigger signals OCP_Max, the first timing module 130 correspondingly connected to the multiple comparison units 122 can send the trigger signals OCP_Max received by each to the control module, and then the control module selects the target trigger signal representing the highest output current. Alternatively, the multiple comparison units 122 can send multiple trigger signals OCP_Max to the control module respectively, and then the control module selects the target trigger signal representing the highest output current.

[0081] Exemplarily, there are four comparison units 122 connected to the conversion unit 121, and four first timing modules 130 are provided, which are respectively connected to the four comparison units 122. Assume that the first preset current threshold is 3A, the second preset current threshold is 2A, the third preset current threshold is 5A, and the fourth preset current threshold is 10A, and the voltage values ​​of the reference voltage signals of the four comparison units 122 are the product values ​​of the four preset current thresholds and the first resistor R. When the output current of the power module 10 is less than 2A, none of the four comparison units 122 outputs the trigger signal OCP_Max. When the output current of the power module 10 is greater than 2A and less than 3A, the trigger signal OCP_Max output by the first comparison unit 122 is 00. When the output current of the power module 10 is greater than 3A and less than 5A, the trigger signal OCP_Max output by the first comparison unit 122 is 00, and the trigger signal OCP_Max output by the second comparison unit 122 is 01, then the target trigger signal is 01. When the output current of the power module 10 is greater than 5A and less than 10A, the trigger signal OCP_Max output by the first comparison unit 122 is 00, the trigger signal OCP_Max output by the second comparison unit 122 is 01, and the trigger signal OCP_Max output by the third comparison unit 122 is 10, then the target trigger signal is 10. When the output current of the power module 10 is greater than 10A, the trigger signal OCP_Max output by the first comparison unit 122 is 00, the trigger signal OCP_Max output by the second comparison unit 122 is 01, the trigger signal OCP_Max output by the third comparison unit 122 is 10, and the trigger signal OCP_Max output by the fourth comparison unit 122 is 11, then the target trigger signal is 11.

[0082] In one embodiment, if Figure 7 As shown, the first timing module 130 may include a counter 131. After receiving the trigger signal OCP_Max, the counter 131 counts according to a preset clock cycle. The counter 131 also outputs an electrical signal EN_Tout when the count value reaches a pre-designed value; the control module 140 is also used to obtain the duration of the output current according to the received electrical signal EN_Tout.

[0083] Among them, the trigger signal OCP_Max enables the counter 131, and the counter 131 starts counting. When the count reaches 1ms or 100us, an electrical signal EN_Tout is output. The control module can control the switch module 110 to turn off according to the electrical signal EN_Tout to achieve overcurrent protection. It should be noted that when the trigger signal OCP_Max is the first trigger signal, the duration of the output current obtained is the first duration, and so on. Similarly, when there are multiple trigger signals OCP_Max, each first timing module 130 can send the trigger signal OCP_Max received by each to the control module.

[0084] In one embodiment, the control module 140 may be used to provide computing and control capabilities to support the operation of the entire overcurrent protection circuit 100. The control module 140 may at least include gate circuits, triggers, and various combinational logic circuits and sequential logic circuits formed by them.

[0085] The overcurrent protection circuit 100 of the above embodiment includes a switch module 110, a detection module 120, a first timing module 130 and a control module 140. The overcurrent protection circuit 100 can determine the first duration of the output current greater than the first preset current threshold when the output current of the power module is greater than the first preset current threshold, and cut off the power supply from the power module 10 to the power module 20 when the first duration is greater than or equal to the first time threshold. When the output current of the power module is less than the first preset current threshold, or when the first duration of the output current greater than the first preset current threshold is less than the first time threshold (for example, when the output current is a transient current such as a surge current), the power supply from the power module 10 to the power module 20 will not be cut off due to the triggering of the overcurrent protection. Therefore, it is not easy to cause the overcurrent protection to be falsely triggered due to the surge current, ensuring that the RF front-end module can work normally when a transient overcurrent such as a surge current occurs, thereby improving the reliability of the RF front-end module.

[0086] Please refer to Figure 8a and Figure 8b , Figure 8a and Figure 8b A circuit diagram of another implementation of the overcurrent protection circuit provided in an embodiment of the present application.

[0087] like Figure 8a and Figure 8b As shown, the overcurrent protection circuit 200 includes a switch module 210 , a detection module 220 and a control module 240 .

[0088] The switch module 210 is used to connect the power module 10 and the power amplifier 30, and the power module 10 is used to supply power to the power amplifier 30. The detection module 220 is used to connect the power module 10 to detect the output current of the power module 10; the detection module 220 is also used to output a first trigger signal when the output current is greater than a first preset current threshold. The control module 240 is used to determine the first duration of the output current greater than the first preset current threshold according to the first trigger signal, and when the first duration is greater than or equal to the first time threshold, control the switch module 210 to disconnect, so as to cut off the power supply from the power module 10 to the power amplifier 30, wherein the first time threshold is greater than 5μs.

[0089] like Figure 8a As shown, the switch module 210 can be connected in series with the detection module 220 between the power module 10 and the power amplifier 30. Figure 8b As shown, the switch module 210 can be connected between the power module 10 and the power amplifier 30 , one end of the detection module 220 is connected between the power module 10 and the switch module 210 , and the other end of the detection module 220 is connected to the control module 240 .

[0090] It should be noted that when the output current is greater than the first preset current threshold, the control module 240 can determine the first duration that the output current is greater than the first preset current threshold based on the first trigger signal, and when the first duration is greater than or equal to the first time threshold, control the switch module 210 to disconnect so as to cut off the power supply module 10 to the power amplifier 30, wherein the first time threshold is greater than 5μs, which is the duration of a general surge current.

[0091] That is to say, when the output current of the power module is less than the first preset current threshold, or when the output current is greater than the first preset current threshold for a first duration less than 5 μs (single surge pulse duration), the overcurrent protection will not be triggered, resulting in the power supply of the power module 10 to the power module 20 being cut off. Therefore, it is not easy to cause the overcurrent protection to be falsely triggered due to the surge current, ensuring that the power amplifier 30 can work normally when there is an instantaneous overcurrent such as a surge current. Therefore, it can solve the problem that the surge current easily triggers the overcurrent protection of the power amplifier 30, thereby affecting the normal operation of the power amplifier 30.

[0092] In one embodiment, if Fig. 9As shown, the control module 240 may include a first timing unit 241 and a control unit 242. The first unit 241 is connected to the detection module 220. The first timing unit 241 performs timing upon receiving the first trigger signal to obtain a first duration, which is the duration during which the output current is greater than the first preset current threshold. The control unit 242 is connected to the first timing unit 241 and is also connected to the switch module 210. The control unit 242 is used to control the switch module 210 to disconnect when the first duration is greater than or equal to the first time threshold, so as to cut off the power supply from the power supply module 10 to the power amplifier 30, thereby providing overcurrent protection for the power amplifier 30.

[0093] Exemplarily, the value range of the first preset current threshold includes (3A, 5A).

[0094] In one embodiment, the detection module 220 is further configured to output a second trigger signal when the output current is greater than a second preset current threshold. The control module 240 is further configured to determine a second duration of time when the output current is greater than the second preset current threshold according to the second trigger signal. The control module 240 is further configured to control the switch module 210 to disconnect when the second duration is greater than or equal to a second time threshold, so as to cut off the power supply module 10 to the power amplifier 30; wherein the second preset current threshold is less than the first preset current threshold, and the second time threshold is greater than the first time threshold.

[0095] Exemplarily, the value range of the second time threshold includes (50 μs, 1 ms); the value range of the second preset current threshold includes (2 A, 3 A).

[0096] In one embodiment, the detection module 220 is also used to output a third trigger signal when the output current is greater than a third preset current threshold; the control module 240 is also used to determine a third duration that the output current is greater than the third preset current threshold based on the third trigger signal; the control module 240 is also used to control the switch module 210 to disconnect when the third duration is greater than or equal to the third time threshold, so as to cut off the power supply module 10 to the power amplifier 30; wherein the third preset current threshold is greater than the first preset current threshold, and the third time threshold is less than the first time threshold.

[0097] Exemplarily, the value range of the third time threshold includes (0 μs, 5 μs); the value range of the third preset current threshold includes (5 A, 10 A).

[0098] In one embodiment, the detection module 220 is also used to output a fourth trigger signal when the output current is greater than a fourth preset current threshold; the control module 240 is also used to control the switch module 210 to disconnect when the fourth trigger signal is detected, so as to cut off the power supply from the power supply module 10 to the power amplifier 30; wherein the fourth preset current threshold is greater than the third preset current threshold.

[0099] Exemplarily, the value range of the fourth preset current threshold is greater than or equal to 10A.

[0100] In one embodiment, a plurality of preset current intervals are provided between the third preset current threshold and the fourth preset current threshold, each preset current interval is provided with a corresponding duration threshold, and the duration threshold is negatively correlated with the current threshold in the preset current interval.

[0101] Among them, the detection module 220 is also used to output a fifth trigger signal when the output current is in any preset current interval; the control module 240 is also used to determine the duration of the output current being greater than or equal to the preset current interval according to the fifth trigger signal, and when the duration is greater than or equal to the duration threshold corresponding to the preset current interval of the output current, control the switch module 210 to disconnect so as to cut off the power supply from the power supply module 10 to the power amplifier 30.

[0102] The overcurrent protection circuit 200 provided in the embodiment of the present application can determine the first duration of a transient overcurrent such as a surge current that is greater than a first preset current threshold when the transient overcurrent such as a surge current occurs, and cut off the power supply of the power supply module 10 to the power amplifier 30 when the first duration is greater than the length of a single surge pulse. Therefore, it is not easy to cause false triggering of the overcurrent protection due to the surge current, thereby ensuring that the power amplifier 30 can work normally when a transient overcurrent such as a surge current occurs, thereby improving the reliability of the power amplifier 30.

[0103] It should be noted that those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific content of the overcurrent protection circuit 200 described above can refer to the corresponding content in the aforementioned overcurrent protection circuit 100 embodiment, and will not be repeated here.

[0104] Please refer to Fig.10 , Fig.10 A schematic block diagram of a radio frequency front-end module provided in an embodiment of the present application.

[0105] like Fig.10 As shown, the RF front-end module 300 includes a power module 310 and an overcurrent protection circuit 320 as described in any one of the embodiments of the present application, and the overcurrent protection circuit 320 is used to provide overcurrent protection for the power module 310.

[0106] In one embodiment, the power module 310 includes at least one of the following: a power amplifier, a power attenuator, a power combiner, and a power divider.

[0107] The power module 310 may be the power module 20 described in the above embodiment. The overcurrent protection circuit 320 may be the overcurrent protection circuit 100 or the overcurrent protection circuit 200 described in the above embodiment.

[0108] It should be noted that the RF front-end module provided in the embodiment of the present application is a component that integrates two or more discrete devices such as RF switches, low-noise amplifiers, filters, duplexers, power amplifiers, transformers, etc. into an independent module, thereby improving the integration and hardware performance of the RF front-end module and miniaturizing its size. Specifically, the RF front-end module can be applied to 4G and 5G communication devices such as smartphones, tablets, and smart watches.

[0109] With the development of information technology, 5G technology and 5G equipment have higher requirements for the performance of RF front-end modules. The RF front-end module provided by the technical solution provided in this application is not prone to false triggering of overcurrent protection due to surge current, ensuring that the RF front-end module can work normally when instantaneous overcurrent such as surge current occurs, thereby improving the reliability of the RF front-end module, so as to better meet the needs of 5G technology, and therefore can be applied to 5G equipment.

[0110] It should be noted that technicians in the relevant field can clearly understand that for the convenience and simplicity of description, the specific content of the RF front-end module 300 described above can refer to the corresponding content in the aforementioned overcurrent protection circuit 100 or overcurrent protection circuit 200 embodiment, and will not be repeated here.

[0111] Please refer to Fig.11 , Fig.11 A schematic block diagram of a power supply device provided in an embodiment of the present application.

[0112] like Fig.11 As shown, the power supply device 400 includes a power supply module 410 and an overcurrent protection circuit 420 as described in any one of the embodiments of the present application, wherein the overcurrent protection circuit 420 is used to connect the power supply module 410 and the power-consuming module in the RF front-end module, and the power supply module 410 is used to power the power-consuming module in the RF front-end module.

[0113] The power module 410 may be the power module 10 described in the above embodiment, and the overcurrent protection circuit 420 may be the overcurrent protection circuit 100 or the overcurrent protection circuit 200 described in the above embodiment. The power module 430 may be the power module 20 described in the above embodiment.

[0114] It should be noted that those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the specific content of the power supply device 400 described above can refer to the corresponding content in the aforementioned overcurrent protection circuit 100 or overcurrent protection circuit 200 embodiments, and will not be repeated here.

[0115] Please refer to Fig.12 , Fig.12 A schematic block diagram of an electronic device provided in an embodiment of the present application.

[0116] like Fig.12 As shown, the electronic device 500 includes: a power supply module 510, a radio frequency front-end module 520 and an overcurrent protection circuit 530 as described in any of the embodiments of the present application, the radio frequency front-end module 520 includes at least one power-consuming module, the power supply module 510 is used to supply power to the power-consuming module, and the overcurrent protection circuit 530 is used to provide overcurrent protection for the power supply module 510 and / or the power-consuming module.

[0117] Among them, the power module 510 can be the power module 10 described in the above embodiment, the RF front-end module 520 can be the RF front-end module 300 described in the above embodiment, and the overcurrent protection circuit 530 can be the overcurrent protection circuit 100 or the overcurrent protection circuit 200 described in the above embodiment.

[0118] It should be noted that those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, the specific content of the electronic device 500 described above can refer to the corresponding content in the aforementioned overcurrent protection circuit 100 or overcurrent protection circuit 200 embodiments, and will not be repeated here.

[0119] It can be understood that the beneficial effects that can be achieved by the electronic device provided in the embodiments of the present application can refer to the beneficial effects of the overcurrent protection circuit in the corresponding embodiments provided above, and will not be repeated here.

[0120] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. An overcurrent protection circuit, characterized in that: The overcurrent protection circuit includes a switch module, a detection module, a first timing module and a control module; wherein: The switch module is used to connect the power module and the power module in the RF front-end module, and the power module is used to supply power to the power module; The detection module is used to connect to the power module to detect the output current of the power module; the detection module is also used to output a first trigger signal when the output current is greater than a first preset current threshold; The first timing module is connected to the detection module, and the first timing module performs timing upon receiving the first trigger signal to obtain a first duration, where the first duration is a duration during which the output current is greater than the first preset current threshold; The control module is connected to the switch module and the first timing module respectively; the control module is used to control the switch module to disconnect when the first duration is greater than or equal to a first time threshold, so as to cut off the power supply from the power supply module to the power consumption module, wherein the first time threshold is greater than the duration of a single surge pulse of the power supply module.

2. The overcurrent protection circuit according to claim 1, characterized in that: The detection module is further configured to output a second trigger signal when the output current is greater than a second preset current threshold; The first timing module further performs timing upon receiving the second trigger signal to obtain a second duration, where the second duration is a duration during which the output current is greater than the second preset current threshold; The control module is further configured to control the switch module to be disconnected when the second duration is greater than or equal to a second time threshold, so as to cut off the power supply from the power supply module to the power consumption module; The second preset current threshold is smaller than the first preset current threshold, and the second time threshold is larger than the first time threshold.

3. The overcurrent protection circuit according to claim 1, characterized in that: The detection module is further configured to output a third trigger signal when the output current is greater than a third preset current threshold; The first timing module further performs timing upon receiving the third trigger signal to obtain a third duration, wherein the third duration is a duration during which the output current is greater than the third preset current threshold; The control module is further configured to control the switch module to be disconnected when the third duration is greater than or equal to a third time threshold, so as to cut off the power supply from the power supply module to the power consumption module; The third preset current threshold is greater than the first preset current threshold, and the third time threshold is less than the first time threshold.

4. The overcurrent protection circuit according to claim 3, characterized in that: The detection module is further configured to output a fourth trigger signal when the output current is greater than a fourth preset current threshold; The control module is also connected to the detection module, and the control module is further used to control the switch module to be disconnected when the fourth trigger signal is detected, so as to cut off the power supply from the power supply module to the power consumption module; Wherein, the fourth preset current threshold is greater than the third preset current threshold.

5. The overcurrent protection circuit according to claim 4, characterized in that: A plurality of preset current intervals are set between the third preset current threshold and the fourth preset current threshold, each of the preset current intervals is set with a corresponding duration threshold, and the duration threshold is negatively correlated with the current threshold in the preset current interval; The detection module is further configured to output a fifth trigger signal when the output current is within any of the preset current intervals; The first timing module also performs timing when receiving the fifth trigger signal; The control module is also used to control the switch module to disconnect when the timing duration of the first timing module is greater than or equal to the duration threshold corresponding to the preset current interval of the output current, so as to cut off the power supply from the power supply module to the power consumption module.

6. The overcurrent protection circuit according to claim 1, characterized in that: The value range of the first time threshold includes (5μs, 50μs); the value range of the first preset current threshold includes (3A, 5A).

7. The overcurrent protection circuit according to claim 2, characterized in that: The value range of the second time threshold includes (50μs, 1ms); the value range of the second preset current threshold includes (2A, 3A).

8. The overcurrent protection circuit according to claim 3, characterized in that: The value range of the third time threshold includes (0μs, 5μs); the value range of the third preset current threshold includes (5A, 10A).

9. The overcurrent protection circuit according to claim 4, characterized in that: The value range of the fourth preset current threshold is greater than or equal to 10A.

10. The overcurrent protection circuit according to claim 2, characterized in that: The overcurrent protection circuit further includes a second timing module, which is used to time when the switch module is disconnected when the output current is greater than the second preset current threshold and less than the first preset current threshold, so as to obtain the disconnection time of the switch module; The control module is connected to the second timing module, and is further configured to control the switch module to conduct when the disconnection time is greater than or equal to a second preset time, so as to restore the power supply from the power supply module to the power consumption module.

11. The overcurrent protection circuit according to claim 1, characterized in that: The detection module includes a conversion unit and a comparison unit; The input end of the conversion unit is used to connect to the power module, and the conversion unit is used to convert the output current of the power module into a voltage signal; The first input end of the comparison unit is connected to the output end of the conversion unit, the second input end of the comparison unit is used to connect to the reference voltage signal, and the comparison unit outputs a trigger signal to the first timing module when the voltage signal is greater than or equal to the reference voltage signal.

12. The overcurrent protection circuit according to claim 11, characterized in that: The conversion unit includes a first transistor, a second transistor, a third transistor, an operational amplifier and a first resistor; The first end of the first transistor and the first end of the second transistor are used to connect to a power module; The second end of the first transistor is connected to the first input end of the operational amplifier, the second end of the second transistor is connected to the second input end of the operational amplifier, and the second end of the second transistor is also used to connect to the power module; The first end of the third transistor is connected to the second end of the second transistor, the second end of the third transistor serves as the output end of the conversion unit, the second end of the third transistor is also grounded through the first resistor, and the controlled end of the third transistor is connected to the output end of the operational amplifier.

13. An overcurrent protection circuit, characterized in that: The overcurrent protection circuit includes a switch module, a detection module and a control module; wherein: The switch module is used to connect the power module and the power amplifier, and the power module is used to supply power to the power amplifier; The detection module is used to connect to the power module to detect the output current of the power module; the detection module is also used to output a first trigger signal when the output current is greater than a first preset current threshold; The control module is used to determine a first duration that the output current is greater than the first preset current threshold according to the first trigger signal, and when the first duration is greater than or equal to a first time threshold, control the switch module to disconnect so as to cut off the power supply from the power supply module to the power amplifier, wherein the first time threshold is greater than 5μs.

14. A radio frequency front-end module, characterized in that: The RF front-end module includes a power module and an overcurrent protection circuit according to any one of claims 1 to 13, wherein the overcurrent protection circuit is used to provide overcurrent protection for the power module.

15. The RF front-end module according to claim 14, characterized in that: The power consumption module includes at least one of the following: a power amplifier, a power attenuator, a power synthesizer, and a power distributor.

16. A power supply device, characterized in that: It comprises a power supply module and an overcurrent protection circuit as described in any one of claims 1 to 13, wherein the overcurrent protection circuit is used to connect the power supply module and a power consumption module in a radio frequency front-end module, and the power supply module is used to supply power to the power consumption module.

17. An electronic device, characterized in that: It comprises a power supply module, a radio frequency front-end module and an overcurrent protection circuit as described in any one of claims 1 to 13, wherein the radio frequency front-end module comprises at least one power-consuming module, the power supply module is used to supply power to the power-consuming module, and the overcurrent protection circuit is used to provide overcurrent protection for the power supply module and / or the power-consuming module.

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