WiFi module driving circuit and multi-band WiFi router

Abstract

The utility model provides a WiFi module driving circuit and a multi-band WiFi router. A power supply VIN1 is connected with a first voltage conversion unit and a second voltage conversion unit, and is connected with a ground wire through a pull-down resistor; when a starting control signal of the control assembly is transmitted to the first voltage conversion unit and the second voltage conversion unit, the first voltage conversion unit performs voltage conversion on a power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit performs voltage conversion on the power supply VIN1 and outputs current to the radio frequency power supply unit; the current of the chip power supply unit is transmitted to a WiFi chip of the WiFi module; and the current of the radio frequency power supply unit is transmitted to the radio frequency front-end module of the WiFi module. According to the application, the WiFi module can be started as required, so that power is saved, and the energy consumption of the WiFi module driving circuit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of WiFi module circuit, in particular to a WiFi module driving circuit and a multi-band WiFi router. BACKGROUND

[0002] With the rapid development of WiFi technology, the WiFi router has higher and higher requirements for wireless backplane rate and more and more requirements for the number of wireless client access, so three-band, four-band or even five-band WiFi routers are produced, resulting in higher and higher power consumption of WiFi router circuit board. At the same time, the safety, environmental protection and energy saving regulations of electronic products in various regions are becoming increasingly stringent, and the market competition is globalized. Therefore, developing a WiFi router that can meet the requirements of high performance and pass the regional energy regulations has become the direction of efforts for major manufacturers.

[0003] However, the existing WiFi router has high overall energy consumption when working, which cannot meet the energy consumption requirements. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application is proposed to provide a WiFi module driving circuit and a multi-band WiFi router to overcome the above problems or at least partially solve the above problems.

[0005] The present application discloses a WiFi module driving circuit, comprising: a control component, a first voltage conversion unit, a second voltage conversion unit, a chip power supply unit and a radio frequency power supply unit;

[0006] The power supply VIN1 is connected with the first voltage conversion unit and the second voltage conversion unit, and is connected with the ground through a pull-down resistor; the control component is connected with the first voltage conversion unit and the second voltage conversion unit; the first voltage conversion unit is connected with the chip power supply unit; the second voltage conversion unit is connected with the radio frequency power supply unit;

[0007] When the start control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the first voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the radio frequency power supply unit; the current of the chip power supply unit is transmitted to the WiFi chip of the WiFi module; the current of the radio frequency power supply unit is transmitted to the radio frequency front-end module of the WiFi module.

[0008] Further, when the off control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the current of the power supply VIN1 is transmitted to the ground through the pull-down resistor.

[0009] Furthermore, the first voltage conversion unit includes a converter U1; the pull-down resistor includes resistor R12 and resistor R13;

[0010] The power supply VIN1 is connected to one end of the resistor R13 and the VIN pin of the converter U1; the other end of the resistor R13 is connected to one end of the resistor R12; and the other end of the resistor R12 is connected to the ground wire.

[0011] Furthermore, the control component is connected to one end of resistor R11; the other end of resistor R11 is connected to the other end of resistor R13, one end of capacitor C13, and the EN / SYNC pin of converter U1; the other end of capacitor C13 is connected to ground.

[0012] Furthermore, the chip power supply unit includes an inductor L1;

[0013] The SW pin of the converter U1 is connected to one end of the inductor L1; the other end of the inductor L1 is connected to the WiFi chip of the WiFi module.

[0014] Furthermore, the chip power supply unit includes capacitor C16, resistor R15, resistor R16 and resistor R17;

[0015] The FB pin of the converter U1 is connected to one end of the resistor R15; the other end of the resistor R15 is connected to one end of the capacitor C16, one end of the resistor R16 and one end of the resistor R17; the other end of the resistor R16 is connected to the ground wire; the other end of the inductor L1 is connected to the other end of the capacitor C16 and the other end of the resistor R17.

[0016] Furthermore, the chip power supply unit includes a capacitor C15 and a resistor R14;

[0017] The BST pin of the converter U1 is connected to one end of the resistor R14; the other end of the resistor R14 is connected to one end of the capacitor C15; and the other end of the capacitor C15 is connected to the SW pin of the converter U1.

[0018] Furthermore, the second voltage conversion unit includes a converter U2; the pull-down resistor includes resistor R22 and resistor R23;

[0019] The power supply VIN1 is connected to one end of the resistor R23 and the VIN pin of the converter U2; the other end of the resistor R23 is connected to one end of the resistor R22; and the other end of the resistor R22 is connected to the ground wire.

[0020] Furthermore, the control component is connected to one end of resistor R21; the other end of resistor R21 is connected to the other end of resistor R23, one end of capacitor C23, and the EN / SYNC pin of converter U2; the other end of capacitor C23 is connected to ground.

[0021] This application discloses a multi-band WiFi router, which includes WiFi modules for at least two frequency bands and at least two sets of WiFi module driving circuits as described in any embodiment of this application; the WiFi module driving circuits are connected to the WiFi modules one by one.

[0022] This application has the following advantages:

[0023] In the embodiments of this application, addressing the issue that existing WiFi routers have high overall power consumption during operation, failing to meet energy efficiency requirements, this application provides a solution for designing a deep power-saving strategy for the WiFi module driver circuit of a single frequency band. Specifically, it is a WiFi module driver circuit, including: a control component, a first voltage conversion unit, a second voltage conversion unit, a chip power supply unit, and an RF power supply unit; power supply VIN1 is connected to the first and second voltage conversion units and connected to ground via pull-down resistors; the control component is connected to the first and second voltage conversion units; the first voltage conversion unit is connected to the chip power supply unit; the second voltage conversion unit is connected to the RF power supply unit; when the start control signal of the control component is transmitted to the first and second voltage conversion units respectively, the first voltage conversion unit converts the voltage of power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit converts the voltage of power supply VIN1 and outputs current to the RF power supply unit; the current from the chip power supply unit is transmitted to the WiFi chip of the WiFi module; the current from the RF power supply unit is transmitted to the RF front-end module of the WiFi module. The power supply VIN1 is connected to the first and second voltage conversion units and to the ground wire through a pull-down resistor. The power supply current goes directly to ground by default without voltage conversion output. Voltage conversion is enabled by control signal to realize the WiFi module on demand, thereby saving power and improving the energy consumption of WiFi module drive circuit. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1This is a structural block diagram of a WiFi module driver circuit provided in one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a WiFi module driver circuit provided in one embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of a 5G low-frequency WiFi module driver circuit provided in a specific embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the structure of a 6G band WiFi module driver circuit provided in a specific embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of a 2G band WiFi module driver circuit provided in a specific embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of a 5G high-frequency WiFi module driver circuit provided in a specific embodiment of this application. Detailed Implementation

[0031] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. 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 without inventive effort are within the scope of protection of this application.

[0032] The inventors discovered through analysis of existing technologies that the fundamental reason why existing WiFi routers have high overall power consumption and cannot meet energy consumption requirements is as follows: During the development of WiFi routers, it is necessary to select chip solutions based on frequency band requirements, output power requirements, and transmission rate requirements; for example, a PCIe controller, WiFi chip, power amplifier (PA), radio frequency switch (SW), low noise amplifier (LNA), voltage conversion chip, memory chip (DDR), flash memory chip, and various filters are required; in the specific WiFi module circuit design, the controller is connected to the WiFi chip through PCIe, and the voltage conversion chip is responsible for powering the WiFi chip and the radio frequency front-end (FEM); when more frequency bands are required to be supported and the required speed is higher, multiple PCIe channels are needed to support multiple WiFi chips, and the corresponding radio frequency front-end links also increase exponentially; if there are unused WiFi frequency bands, their corresponding power supply circuit modules are still in working state, which will cause the overall power consumption to not be reduced as much as possible, and may even fail to pass the energy consumption regulations of some regions (such as Regulation (EU) 2023 / 826).

[0033] Based on the above systematic analysis, one of the core technical concepts of this application is that a deep power-saving strategy can be designed for the WiFi module driver circuit of a single frequency band to improve the power consumption of the WiFi module driver circuit and meet the power consumption requirements.

[0034] It should be noted that, in any embodiment of this application, the WiFi module driver circuit described herein can be used in a single-band or multi-band WiFi router.

[0035] Reference Figure 1 This illustration shows a WiFi module driving circuit according to an embodiment of the present application, including: a control component, a first voltage conversion unit, a second voltage conversion unit, a chip power supply unit, and a radio frequency power supply unit;

[0036] Power supply VIN1 is connected to the first voltage conversion unit and the second voltage conversion unit, and is connected to ground through a pull-down resistor; the control component is connected to the first voltage conversion unit and the second voltage conversion unit; the first voltage conversion unit is connected to the chip power supply unit; the second voltage conversion unit is connected to the RF power supply unit;

[0037] When the start control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the first voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the radio frequency power supply unit; the current of the chip power supply unit is transmitted to the WiFi chip of the WiFi module; the current of the radio frequency power supply unit is transmitted to the radio frequency front-end module of the WiFi module.

[0038] In the embodiments of this application, addressing the issue that existing WiFi routers have high overall power consumption during operation, failing to meet energy efficiency requirements, this application provides a solution for designing a deep power-saving strategy for the WiFi module driver circuit of a single frequency band. Specifically, it is a WiFi module driver circuit, including: a control component, a first voltage conversion unit, a second voltage conversion unit, a chip power supply unit, and an RF power supply unit; power supply VIN1 is connected to the first and second voltage conversion units and connected to ground via pull-down resistors; the control component is connected to the first and second voltage conversion units; the first voltage conversion unit is connected to the chip power supply unit; the second voltage conversion unit is connected to the RF power supply unit; when the start control signal of the control component is transmitted to the first and second voltage conversion units respectively, the first voltage conversion unit converts the voltage of power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit converts the voltage of power supply VIN1 and outputs current to the RF power supply unit; the current from the chip power supply unit is transmitted to the WiFi chip of the WiFi module; the current from the RF power supply unit is transmitted to the RF front-end module of the WiFi module. The power supply VIN1 is connected to the first and second voltage conversion units and to the ground wire through a pull-down resistor. The power supply current goes directly to ground by default without voltage conversion output. Voltage conversion is enabled by control signal to realize the WiFi module on demand, thereby saving power and improving the energy consumption of WiFi module drive circuit.

[0039] The following will further describe a WiFi module driver circuit in this exemplary embodiment.

[0040] It should be noted that the power supply VIN1 can be the power supply for the entire WiFi router; since the power supply VIN1 is pulled down to ground, when the power supply VIN1 is turned on, the first voltage conversion unit and the second voltage conversion unit will not immediately enter the working state but will be in the default off state.

[0041] The control component may include a PCIe controller, which is connected to the first voltage conversion unit and the second voltage conversion unit via a PCIe interface, and sends control signals through the PCIe interface to enable the first voltage conversion unit and the second voltage conversion unit, so that the first voltage conversion unit and the second voltage conversion unit respectively convert the voltage of the power supply VIN1 and output voltage; wherein, the control signal may be a deep power saving control signal.

[0042] The converted voltages power the WiFi chip of the WiFi module through the chip power supply unit and the radio frequency front-end module of the WiFi module through the radio frequency power supply unit.

[0043] By using pull-down resistors, the power conversion chip for the WiFi module is disabled by default when the entire machine is powered on, preventing the related voltage conversion chip from becoming uncontrollable during power-on. Furthermore, by connecting the PCIe controller's GPIO and the WiFi chip's power supply network and its FEM power supply network via DeepSleep NET, the control components and the WiFi network card can work together to instantly switch the on / off states of the related voltage conversion chips, thereby achieving the deepest power saving effect under different usage scenarios.

[0044] Reference Figure 2 In one embodiment of this application, when the shutdown control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the current of the power supply VIN1 is transmitted to the ground wire through the pull-down resistor.

[0045] It should be noted that although the first voltage conversion unit and the second voltage conversion unit are in a default off state when the power supply VIN1 is turned on, the control component can also actively turn off the voltage conversion function of the first voltage conversion unit and the second voltage conversion unit by turning off the control signal after the first voltage conversion unit and the second voltage conversion unit are turned on.

[0046] Reference Figure 2 In one embodiment of this application, the first voltage conversion unit includes a converter U1; the pull-down resistor includes resistor R12 and resistor R13;

[0047] The power supply VIN1 is connected to one end of the resistor R13 and the VIN pin of the converter U1; the other end of the resistor R13 is connected to one end of the resistor R12; and the other end of the resistor R12 is connected to the ground wire.

[0048] It should be noted that the converter U1 can be an MP2331GTL; when the power supply VIN1 is turned on and no voltage conversion is performed, the current of the power supply VIN1 flows to ground through resistors R12 and R13.

[0049] Reference Figure 2 In one embodiment of this application, the control component is connected to one end of resistor R11; the other end of resistor R11 is connected to the other end of resistor R13, one end of capacitor C13 and the EN / SYNC pin of converter U1; the other end of capacitor C13 is connected to ground.

[0050] It should be noted that the control signal of the control component enables the converter U1 through resistor R11.

[0051] Reference Figure 2In one embodiment of this application, the chip power supply unit includes an inductor L1;

[0052] The SW pin of the converter U1 is connected to one end of the inductor L1; the other end of the inductor L1 is connected to the WiFi chip of the WiFi module.

[0053] It should be noted that the output current of the converter U1 is transmitted to the WiFi chip of the WiFi module through the inductor L1.

[0054] Reference Figure 2 In one embodiment of this application, the chip power supply unit includes a capacitor C16, a resistor R15, a resistor R16, and a resistor R17.

[0055] The FB pin of the converter U1 is connected to one end of the resistor R15; the other end of the resistor R15 is connected to one end of the capacitor C16, one end of the resistor R16 and one end of the resistor R17; the other end of the resistor R16 is connected to the ground wire; the other end of the inductor L1 is connected to the other end of the capacitor C16 and the other end of the resistor R17.

[0056] It should be noted that the capacitor C16, the resistor R15, the resistor R16 and the resistor R17 are used to feed the output current back to the FB pin of the converter U1.

[0057] Reference Figure 2 In one embodiment of this application, the chip power supply unit includes a capacitor C15 and a resistor R14;

[0058] The BST pin of the converter U1 is connected to one end of the resistor R14; the other end of the resistor R14 is connected to one end of the capacitor C15; and the other end of the capacitor C15 is connected to the SW pin of the converter U1.

[0059] Reference Figure 2 In one embodiment of this application, the second voltage conversion unit includes a converter U2; the pull-down resistor includes resistor R22 and resistor R23;

[0060] The power supply VIN1 is connected to one end of the resistor R23 and the VIN pin of the converter U2; the other end of the resistor R23 is connected to one end of the resistor R22; and the other end of the resistor R22 is connected to the ground wire.

[0061] It should be noted that the converter U2 may be an MP2330GTL.

[0062] Reference Figure 2In one embodiment of this application, the control component is connected to one end of resistor R21; the other end of resistor R21 is connected to the other end of resistor R23, one end of capacitor C23 and the EN / SYNC pin of converter U2; the other end of capacitor C23 is connected to ground.

[0063] It should be noted that the control signal of the control component enables the converter U2 through resistor R21.

[0064] Reference Figure 2 In one embodiment of this application, the control component is connected to one end of resistor R21; the other end of resistor R21 is connected to the other end of resistor R23, one end of capacitor C23, and the EN / SYNC pin of converter U2; the other end of capacitor C23 is connected to ground.

[0065] The chip power supply unit includes an inductor L2; the SW pin of the converter U2 is connected to one end of the inductor L2; the other end of the inductor L2 is connected to the radio frequency front-end module of the WiFi module.

[0066] The chip power supply unit includes capacitor C26, resistor R25, resistor R26, and resistor R27; the FB pin of converter U2 is connected to one end of resistor R25; the other end of resistor R25 is connected to one end of capacitor C26, one end of resistor R26, and one end of resistor R27; the other end of resistor R26 is connected to ground; the other end of inductor L2 is connected to the other end of capacitor C26 and the other end of resistor R27.

[0067] The chip power supply unit includes a capacitor C25 and a resistor R24; the BST pin of the converter U2 is connected to one end of the resistor R24; the other end of the resistor R24 ​​is connected to one end of the capacitor C25; and the other end of the capacitor C25 is connected to the SW pin of the converter U2.

[0068] It should be noted that the control signal of the control component enables the converter U2 through resistor R21; the output current of the converter U2 is transmitted to the radio frequency front-end module of the WiFi module through inductor L2; the capacitor C26, the resistor R25, the resistor R26 and the resistor R27 are used to feed the output current back to the FB pin of the converter U2.

[0069] Reference Figure 3 In a specific embodiment of this application, when the WiFi module is a 5G low-frequency WiFi module, 12VIN is the power input of the whole machine, +3.3V_5GL_PCIE0 is the 3.3V power supply NET for the WiFi 5G low-frequency chip, and +5V_5GL_FEM is the 5V power supply NET for the corresponding 5G low-frequency FEM.

[0070] One end of DeepSleep_PCIE0 is connected to enable pin 6 of the 3.3V power conversion chip U533 and enable pin 6 of the 5V power conversion chip U537. The other end is connected to a GPIO of the PCIe controller (e.g., GPIO0). By pulling them down to ground via R2599 and R2601, the power conversion functions of U533 and U537 are disabled by default. When the device is powered on, U533 and U537 do not start working simultaneously; there is no 3.3V or 5V output, and the entire PCIe0 WIFI 5G low-frequency band card remains powered off. Only when the software executes `wlconf wl0 power_up` does the GPIO0 of the PCIe controller output a high potential, enabling the power conversion functions of U533 and U537 through DeepSleep_PCIE0, outputting 3.3V and 5V, and the entire PCIe0 WIFI 5G low-frequency band card begins to work. In a real-world operating environment, once the 5G low-frequency band is no longer needed, executing `wlconf wl0 power_down` will cause the PCIe controller's GPIO0 to output a low potential, which, via `DeepSleep_PCIE0`, disables the power conversion functions of U533 and U537, putting the entire PCIe0 WIFI 5G low-frequency band card back into a power-off state. This design allows for the immediate entry and exit of the PCIe0 WIFI 5G low-frequency band card into deep power-saving mode.

[0071] Reference Figure 4 In a specific embodiment of this application, the WiFi module may include a 6G band WiFi module, wherein 12VIN is the power input of the whole machine, +3.3V_6G_PCIE1 is the 3.3V power supply NET for the WiFi 6G band chip, and +5V_6G_FEM is the 5V power supply NET for the corresponding 6G band FEM.

[0072] One end of DeepSleep_PCIE1 is connected to enable pin 6 of the 3.3V power conversion chip U534 and enable pin 6 of the 5V power conversion chip U538. The other end is connected to a GPIO of the PCIe controller (e.g., GPIO1). By pulling down to ground via resistors R2603 and R2605, the power conversion functions of U534 and U538 are disabled by default. When the system is powered on, U534 and U538 do not start working simultaneously; there is no 3.3V or 5V output, and the entire PCIe1 WIFI 6G band card remains powered off. Only when the software executes `wlconf wl1 power_up` does the GPIO1 of the PCIe controller output a high potential, enabling the power conversion functions of U534 and U538 through DeepSleep_PCIE1, outputting 3.3V and 5V, and the entire PCIe1 WIFI 6G band card begins to work. In a real-world working environment, once the 6GHz band is no longer needed, executing `wlconf wl1 power_down` will cause the PCIe controller's GPIO1 to output a low voltage, which, via `DeepSleep_PCIE1`, disables the power conversion functions of U534 and U538, putting the entire PCIe1 WIFI 6GHz band card back into a power-off state. This design allows for the immediate entry and exit of the PCIe1 WIFI 6GHz band card into and out of deep power-saving mode.

[0073] Reference Figure 5 In a specific embodiment of this application, the WiFi module may include a 2G band WiFi module, wherein 12VIN is the power input of the whole machine, +3.3V_2G_PCIE2 is the 3.3V power supply NET for the WiFi 2G band chip, and +5V_2G_FEM is the 5V power supply NET for the corresponding 2G band FEM.

[0074] One end of DeepSleep_PCIE2 is connected to enable pin 6 of the 3.3V power conversion chip U535 and enable pin 6 of the 5V power conversion chip U539. The other end is connected to a GPIO of the PCIe controller (e.g., GPIO2). By pulling down to ground via resistors R2613 and R2611, the power conversion functions of U535 and U539 are disabled by default. When the system is powered on, U535 and U539 do not start working simultaneously; there is no 3.3V or 5V output, and the entire PCIe2 WIFI 2G band card remains powered off. Only when the software executes `wlconf wl2 power_up` does the GPIO2 output of the PCIe controller go high, enabling the power conversion functions of U535 and U539 through DeepSleep_PCIE2, outputting 3.3V and 5V, and the entire PCIe2 WIFI 2G band card begins to work. In a real-world operating environment, once the 2G band is no longer needed, executing `wlconf wl2 power_down` will cause the PCIe controller's GPIO2 output to go low, disabling the power conversion functions of U535 and U539 via `DeepSleep_PCIE2`. This will put the entire PCIe2 WIFI 2G band card back into a power-off state. This design allows for the immediate entry and exit of the PCIe2 WIFI 2G band card into deep power-saving mode.

[0075] Reference Figure 6 In a specific embodiment of this application, the WiFi module may include a 5G high-frequency WiFi module, wherein 12VIN is the power input of the whole machine, +3.3V_5GU_PCIE3 is the 3.3V power supply NET for the WiFi 5G high-frequency chip, and +5V_5GU_FEM is the 5V power supply NET for the corresponding 5G high-frequency FEM;

[0076] One end of DeepSleep_PCIE3 is connected to enable pin 6 of the 3.3V power conversion chip U536 and enable pin 6 of the 5V power conversion chip U540. The other end is connected to a GPIO of the PCIe controller (e.g., GPIO3). By pulling down to ground via R2607 and R2609, the power conversion functions of U536 and U540 are disabled by default. When the entire system is powered on, U536 and U540 do not start working simultaneously; there is no 3.3V or 5V output, and the entire PCIe3 WIFI 5G high-frequency band card remains powered off. Only when the software executes `wlconf wl3 power_up` does the GPIO3 of the PCIe controller output a high potential, enabling the power conversion functions of U536 and U540 through DeepSleep_PCIE3, outputting 3.3V and 5V, and the entire PCIe3 WIFI 5G high-frequency band card begins to work. In a real-world working environment, once the 5G high-frequency band is no longer needed, executing `wlconf wl3 power_down` will cause the PCIe controller's GPIO3 to output a low potential, which, via `DeepSleep_PCIE3`, disables the power conversion functions of U536 and U540, putting the entire PCIe3 WIFI 5G high-frequency band card back into a power-off state. This design allows for the immediate entry and exit of the PCIe3 WIFI 5G high-frequency band card into and out of deep power-saving mode.

[0077] Reference Figures 3-6 In one specific embodiment of this application, the WiFi module includes a 5G low-frequency WiFi module, a 6G frequency WiFi module, a 2G frequency WiFi module, and a 5G high-frequency WiFi module;

[0078] The first voltage conversion unit and the second voltage conversion unit comprise four groups; the chip power supply unit and the radio frequency power supply unit comprise four groups;

[0079] The power supply VIN1 is connected to four sets of the first voltage conversion unit and the second voltage conversion unit respectively; each set of the first voltage conversion unit and the second voltage conversion unit is connected to each set of the chip power supply unit and the radio frequency power supply unit respectively;

[0080] Each group of chip power supply units and radio frequency power supply units is respectively connected to the 5G low-frequency WiFi module, the 6G WiFi module, the 2G WiFi module, and the 5G high-frequency WiFi module.

[0081] One embodiment of this application provides a multi-band WiFi router, the router including WiFi modules of at least two frequency bands, and the router including at least two sets of WiFi module driving circuits as described in any embodiment of this application; the WiFi module driving circuits are connected to the WiFi modules one by one.

[0082] It should be noted that the BE24500 WiFi router design supports a maximum wireless speed of 24500Mbps. This requires the main control chip to output four PCIe ports to control four WiFi chips on different frequency bands, and each WiFi chip to output four RF front-end links to meet the maximum speed configuration requirement. Power is supplied to the four WiFi chips and their RF front-ends (FEMs) connected to the four PCIe ports. Each power supply circuit module operates independently and is not controlled by the PCIe controller. When the device is powered on, the 3.3V supplied by PCIe ports 0-3 and the 5V supplied by the four FEMs simultaneously begin power supply. However, in actual WiFi router operating environments, there are scenarios where the four frequency bands are not used simultaneously. Therefore, when multiple different frequency bands are operating, the control component can selectively enable or disable the voltage conversion unit corresponding to a specific WiFi module on demand, thereby achieving further power saving.

[0083] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0084] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device 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 terminal device. 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 terminal device that includes said element.

[0085] The foregoing has provided a detailed description of a WiFi module driver circuit and a multi-band WiFi router provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A WiFi module driver circuit, characterized in that, include: Control components, first voltage conversion unit, second voltage conversion unit, chip power supply unit, and radio frequency power supply unit; Power supply VIN1 is connected to the first voltage conversion unit and the second voltage conversion unit, and is connected to ground through a pull-down resistor; the control component is connected to the first voltage conversion unit and the second voltage conversion unit; the first voltage conversion unit is connected to the chip power supply unit; the second voltage conversion unit is connected to the RF power supply unit; When the start control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the first voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the chip power supply unit; the second voltage conversion unit converts the voltage of the power supply VIN1 and outputs current to the radio frequency power supply unit; the current of the chip power supply unit is transmitted to the WiFi chip of the WiFi module; the current of the radio frequency power supply unit is transmitted to the radio frequency front-end module of the WiFi module.

2. The WiFi module driver circuit according to claim 1, characterized in that, When the shutdown control signal of the control component is transmitted to the first voltage conversion unit and the second voltage conversion unit respectively, the current of the power supply VIN1 is transmitted to the ground wire through the pull-down resistor.

3. The WiFi module driver circuit according to claim 1, characterized in that, The first voltage conversion unit includes a converter U1; the pull-down resistor includes resistor R12 and resistor R13; The power supply VIN1 is connected to one end of the resistor R13 and the VIN pin of the converter U1; the other end of the resistor R13 is connected to one end of the resistor R12; and the other end of the resistor R12 is connected to the ground wire.

4. The WiFi module driver circuit according to claim 3, characterized in that, The control component is connected to one end of resistor R11; the other end of resistor R11 is connected to the other end of resistor R13, one end of capacitor C13, and the EN / SYNC pin of converter U1; the other end of capacitor C13 is connected to ground.

5. The WiFi module driver circuit according to claim 3, characterized in that, The chip power supply unit includes an inductor L1; The SW pin of the converter U1 is connected to one end of the inductor L1; the other end of the inductor L1 is connected to the WiFi chip of the WiFi module.

6. The WiFi module driving circuit according to claim 5, characterized in that, The chip power supply unit includes capacitor C16, resistor R15, resistor R16 and resistor R17; The FB pin of the converter U1 is connected to one end of the resistor R15; the other end of the resistor R15 is connected to one end of the capacitor C16, one end of the resistor R16 and one end of the resistor R17; the other end of the resistor R16 is connected to the ground wire; the other end of the inductor L1 is connected to the other end of the capacitor C16 and the other end of the resistor R17.

7. The WiFi module driver circuit according to claim 5, characterized in that, The chip power supply unit includes a capacitor C15 and a resistor R14; The BST pin of the converter U1 is connected to one end of the resistor R14; the other end of the resistor R14 is connected to one end of the capacitor C15; and the other end of the capacitor C15 is connected to the SW pin of the converter U1.

8. The WiFi module driver circuit according to claim 3, characterized in that, The second voltage conversion unit includes a converter U2; the pull-down resistor includes resistor R22 and resistor R23; The power supply VIN1 is connected to one end of the resistor R23 and the VIN pin of the converter U2; the other end of the resistor R23 is connected to one end of the resistor R22; and the other end of the resistor R22 is connected to the ground wire.

9. The WiFi module driving circuit according to claim 8, characterized in that, The control component is connected to one end of resistor R21; the other end of resistor R21 is connected to the other end of resistor R23, one end of capacitor C23, and the EN / SYNC pin of converter U2; the other end of capacitor C23 is connected to ground.

10. A multi-band WiFi router, the router comprising WiFi modules for at least two frequency bands, characterized in that, The router includes at least two sets of WiFi module driver circuits as described in any one of claims 1-9; the WiFi module driver circuits are connected to the WiFi modules in a one-to-one correspondence.

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