A power supply system, method, and readable storage medium for a Wi-Fi chip.

Abstract

This invention discloses a power supply system, method, and readable storage medium for a Wi-Fi chip, relating to the field of integrated circuit technology. It includes: a system ON-area power supply module for supplying power to the system ON-area when the system is powered on; a voltage switching module for supplying power to the RF analog module and the system OFF-area power supply module using a first low-dropout linear regulator module when the system is powered on; and a system OFF-area power supply module for supplying power to the RF analog module and the system OFF-area power supply module using a second low-dropout linear regulator module or a buck module when the power supply to the RF analog module is stable; and a system OFF-area power supply module for supplying power to the system OFF-area when the power supply to the second low-dropout linear regulator module or the buck module is stable. This invention ensures the power supply stability of the Wi-Fi chip, improves the performance of the Wi-Fi chip, and extends the lifespan of the Wi-Fi chip.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit technology, and in particular to a power supply system, method, and computer-readable storage medium for a Wi-Fi chip. Background Technology

[0002] Wi-Fi is now used in every aspect of our lives, and its widespread application is inseparable from Wi-Fi chips. Within Wi-Fi chips, the system's power supply is crucial, directly determining whether the chip can function properly.

[0003] Most existing Wi-Fi chip power supply methods directly and synchronously power all modules and subsystems within the Wi-Fi chip, which can easily lead to unstable power supply, affecting the performance of the Wi-Fi chip and resulting in a shorter lifespan.

[0004] In conclusion, effectively solving the problems of unstable power supply to Wi-Fi chips, which affects their performance and lifespan, is an urgent issue that needs to be addressed by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a power supply system for a Wi-Fi chip, which ensures the stability of the power supply to the Wi-Fi chip, improves the performance of the Wi-Fi chip, and extends the lifespan of the Wi-Fi chip; another purpose of this invention is to provide a power supply device, apparatus, and computer-readable storage medium for a Wi-Fi chip.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A power supply system for a Wi-Fi chip, comprising:

[0008] The system ON zone power supply module is used to supply power to the system ON zone when the system is powered on.

[0009] A voltage switching module is used to supply power to the RF analog module and the system OFF area power supply module using a first low-dropout linear regulator module when the system is powered on; when the first low-dropout linear regulator module provides stable power to the RF analog module, a second low-dropout linear regulator module or a buck module is used to supply power to the RF analog module and the system OFF area power supply module.

[0010] The system OFF area power supply module is used to supply power to the system OFF area when the power supply of the second low dropout linear regulator module or the buck module is stable.

[0011] In one specific embodiment of the present invention, the voltage switching module is specifically used to control, through logic gate circuit signals, when the system is powered on, to supply power to the radio frequency analog module and the system OFF area power supply module using the first low dropout linear regulator module; when the power supply of the first low dropout linear regulator module is stable, to control, through logic gate circuit signals, to supply power to the radio frequency analog module and the system OFF area power supply module using the second low dropout linear regulator module or the buck module.

[0012] In one specific embodiment of the present invention, the voltage switching module is specifically used to control the levels of a first control signal, a second control signal, and a third control signal when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module; when the power supply of the first low-dropout linear regulator module is stable, the module controls the levels of a second control signal, a third control signal, and a fourth control signal, so as to use the second low-dropout linear regulator module or the buck module to supply power to the radio frequency analog module and the system OFF area power supply module.

[0013] In one specific embodiment of the present invention, the voltage switching module is specifically used to set the first control signal to an enable bit and set the second and third control signals to a low level when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module; when the power supply of the first low-dropout linear regulator module is stable, the second control signal is set to a low level and the third and fourth control signals are set to a high level, so as to use the second low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module.

[0014] In one specific embodiment of the present invention, the voltage switching module is specifically used to set the first control signal to an enable bit and set the second and third control signals to a low level when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module; when the power supply of the first low-dropout linear regulator module is stable, the second control signal is set to a high level and the third and fourth control signals are set to a low level, so as to use the buck module to supply power to the radio frequency analog module and the system OFF area power supply module.

[0015] In one specific embodiment of the present invention, it further includes:

[0016] The power supply detection module is used to acquire the first level control feedback signal corresponding to the first control signal, the second control signal, and the third control signal; to perform power supply detection on the first low dropout linear regulator module based on the first level control feedback signal, the first control signal, the second control signal, the third control signal, and the system state machine; to acquire the second level control feedback signal corresponding to the second control signal, the third control signal, and the fourth control signal; and to perform power supply detection on the second low dropout linear regulator module and the buck module based on the second level control feedback signal, the second control signal, the third control signal, the fourth control signal, and the system state machine.

[0017] In one specific embodiment of the present invention, the power supply detection module is specifically used to perform power supply detection on the first low-dropout linear regulator module, the second low-dropout linear regulator module and the buck module using an assertion method, so as to provide an alarm prompt when a power supply abnormality is detected.

[0018] In one specific embodiment of the present invention, it further includes:

[0019] The low-power mode control module is used to control the power supply of the system OFF area power supply module, the system ON area power supply module, the radio frequency analog module, and the system clock module according to the received low-power power supply mode selection instruction, so that the system can operate in the corresponding low-power power supply mode.

[0020] A method for powering a Wi-Fi chip, comprising:

[0021] When the system is powered on, power is supplied to the ON area of ​​the system;

[0022] When the system is powered on, the first low-dropout linear regulator module is used to power the RF analog module and the system OFF area power supply module;

[0023] When the first low-dropout linear regulator provides stable power, the second low-dropout linear regulator module or buck module is used to supply power to the RF analog module and the system OFF area power supply module.

[0024] When the power supply to the second low-dropout linear regulator module or buck module is stable, power is supplied to the OFF area of ​​the system.

[0025] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the power supply method for the Wi-Fi chip as described above.

[0026] The power supply system for the Wi-Fi chip provided by this invention includes: a system ON area power supply module, used to supply power to the system ON area when the system is powered on; a voltage switching module, used to supply power to the RF analog module and the system OFF area power supply module using a first low-dropout linear regulator module when the system is powered on; when the power supply to the RF analog module by the first low-dropout linear regulator module is stable, to supply power to the RF analog module and the system OFF area power supply module using a second low-dropout linear regulator module or a buck module; and a system OFF area power supply module, used to supply power to the system OFF area when the power supply to the second low-dropout linear regulator module or the buck module is stable.

[0027] As can be seen from the above technical solution, the beneficial effect of this invention is that the first low-dropout linear regulator module supplies power to the system during startup, ensuring a smooth power-on process. It provides two selectable power supply modes: a second low-dropout linear regulator module and a buck module, for power supply in normal operating mode. When the first low-dropout linear regulator module provides stable power to the RF analog module, the second low-dropout linear regulator module or the buck module is selected to supply power to the Wi-Fi chip in normal operating mode, based on power supply requirements. When the second low-dropout linear regulator module or the buck module provides stable power, the system OFF area power supply module is then used to supply power to the system OFF area. This achieves staged power supply to each module in the Wi-Fi chip, ensuring the stability of the Wi-Fi chip power supply, improving Wi-Fi chip performance, and extending the lifespan of the Wi-Fi chip.

[0028] Accordingly, the present invention also provides a power supply device, apparatus and computer-readable storage medium for a Wi-Fi chip corresponding to the power supply method of the above-mentioned Wi-Fi chip, which have the above-mentioned technical effects, and will not be repeated here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a structural block diagram of a power supply system for a Wi-Fi chip according to an embodiment of the present invention;

[0031] Figure 2 This is a structural block diagram of a power supply system for another Wi-Fi chip in an embodiment of the present invention;

[0032] Figure 3 This is a block diagram of the internal structure of a power management module in a Wi-Fi chip according to an embodiment of the present invention;

[0033] Figure 4 This is a timing diagram of a method for powering a Wi-Fi chip using a second low-dropout linear regulator module, as described in an embodiment of the present invention.

[0034] Figure 5 This is a timing diagram of a method for powering a Wi-Fi chip using a step-down module, as described in an embodiment of the present invention.

[0035] Figure 6 This is a flowchart illustrating one implementation of a power supply method for a Wi-Fi chip in this invention. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] See Figure 1 , Figure 1 This is a structural block diagram of a power supply system for a Wi-Fi chip according to an embodiment of the present invention. The system may include:

[0038] System ON zone power supply module 1 is used to supply power to the system ON zone when the system is powered on;

[0039] The voltage switching module 2 is used to supply power to the RF analog module and the system OFF area power supply module 3 using the first low dropout linear regulator module when the system is powered on; when the first low dropout linear regulator module provides stable power to the RF analog module, the second low dropout linear regulator module or the buck module is used to supply power to the RF analog module and the system OFF area power supply module 3.

[0040] The system OFF area power supply module 3 is used to supply power to the system OFF area when the power supply of the second low-dropout linear regulator module or the buck module is stable.

[0041] See Figure 2 , Figure 2 This is a structural block diagram of a power supply system for another Wi-Fi chip in an embodiment of the present invention. A schematic diagram of the entire system is shown below. Figure 2As shown, it includes a power management module (PMU) and other subsystems or modules, such as a radio frequency analog module (RFA), a radio frequency control module (RFC), a one-time programmable memory module (EFUSE), a USB physical layer module (USBPHY), a CPU subsystem, a system ON area (SDIO ON area module, SDIO_ON), ​​a physical layer module (PHYCORE) for processing Wi-Fi data, a MAC layer module (MACCORE) for processing Wi-Fi data, a general purpose I / O interface (GPIO), a USB MAC layer module (USBCORE), and a system OFF area (SDIO OFF area module, SDIO_OFF).

[0042] The entire system chip top is powered by an external 3.3V supply. The power management module, through the input 3.3V power, branches out four power supplies: VO15P / VD11H / VD11D / VD25E, to power other modules in the system. Specifically, the 1.5V VO15P power supply powers the RF analog module; the 1.1V VD11H power supply powers the ON area of ​​the entire system, including the RF analog module, RF control module, one-time programmable memory module, system ON area, general I / O interfaces, and USB MAC layer module; the 1.1V OFF area power signal VD11D powers the OFF area of ​​the entire system, including the RF analog module, RF control module, USB physical layer module, CPU, physical layer module for processing Wi-Fi data, MAC layer module for processing Wi-Fi data, and system OFF area; and the 2.5V VD25E power supply is used for programming the one-time programmable memory module.

[0043] like Figure 1As shown, the power supply system of the Wi-Fi chip provided in this embodiment of the invention includes a system ON area power supply module 1 (HLDO), a voltage switching module 2 (DCDC), and a system OFF area power supply module 3 (CLDO). When the system is powered on, the system ON area is powered by the system ON area power supply module 1. During system power-on, the first low-dropout linear regulator module (SLDO) in the voltage switching module 2 powers the radio frequency analog module (RFA) and the system OFF area power supply module 3. When the first low-dropout linear regulator module provides stable power to the radio frequency analog module, a second low-dropout linear regulator module (LDO mode) or a buck module (BUCK mode) powers the radio frequency analog module and the system OFF area power supply module 3. When the second low-dropout linear regulator module or the buck module provides stable power, the system OFF area is powered by the system OFF area power supply module 3. By utilizing the first low-dropout linear regulator module to provide the startup current when the system is first started, a smooth power-on process is ensured. When the system is working normally, the second low dropout linear regulator module or the buck module can be selected for power supply according to the needs of the scenario to meet the needs of different working scenarios. The stability advantage of the second low dropout linear regulator module and the high conversion rate and low heat generation advantage of the buck module are fully utilized to reduce power consumption in normal working mode.

[0044] As described in the above technical solution, the first low-dropout linear regulator module supplies power to the system during startup, ensuring a smooth power-on process. Two selectable power supply modes are provided: a second low-dropout linear regulator module and a buck module, for power supply in normal operating mode. When the first low-dropout linear regulator module provides stable power to the RF analog module, the second low-dropout linear regulator module or the buck module is selected to power the Wi-Fi chip in normal operating mode, based on power requirements. When the second low-dropout linear regulator module or the buck module provides stable power, the system OFF area power supply module is then used to power the system OFF area. This achieves staged power supply to each module in the Wi-Fi chip, ensuring the stability of the Wi-Fi chip's power supply, improving Wi-Fi chip performance, and extending the Wi-Fi chip's lifespan.

[0045] It should be noted that, based on the above embodiments, the present invention also provides corresponding improvements. In subsequent embodiments, steps identical or corresponding to those in the above embodiments can be referenced interchangeably, and their respective beneficial effects can also be referred to each other. These improvements will not be elaborated upon in the following improved embodiments.

[0046] In one specific embodiment of the present invention, the voltage switching module 2 is specifically used to control the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module 3 through logic gate circuit signals when the system is powered on; when the power supply of the first low-dropout linear regulator module is stable, the second low-dropout linear regulator module or the buck module is controlled by logic gate circuit signals to supply power to the radio frequency analog module and the system OFF area power supply module 3.

[0047] When the system is powered on, the voltage switching module 2, through logic gate circuit signal control, uses the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3. Once the power supply from the first low-dropout linear regulator module is stable, the second low-dropout linear regulator module or a buck module, also through logic gate circuit signal control, supplies power to the RF analog module and the system OFF area power supply module 3. This leverages the advantages of logic gate circuit signal control, such as low power supply requirements and low heat loss.

[0048] In one specific embodiment of the present invention, the voltage switching module 2 is specifically used to control the levels of the first control signal, the second control signal, and the third control signal when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module 3; when the power supply of the first low-dropout linear regulator module is stable, the second control signal, the third control signal, and the fourth control signal are controlled to supply power to the radio frequency analog module and the system OFF area power supply module 3 using the second low-dropout linear regulator module or the buck module.

[0049] When the system is powered on, the voltage switching module 2 controls the levels of the first control signal (pow_ldo14), the second control signal (pow_sw), and the third control signal (pow_ldo15) to supply power to the RF analog module and the system OFF area power supply module 3 using the first low-dropout linear regulator module. When the power supply from the first low-dropout linear regulator module is stable, the second low-dropout linear regulator module or the step-down module is used to supply power to the RF analog module and the system OFF area power supply module 3 by controlling the levels of the second control signal, the third control signal, and the fourth control signal (anaparsw_mac

[46] ). By controlling the control signals in the logic gate circuit, the power supply switching control from the system startup stage to the normal operation stage is realized.

[0050] In one specific embodiment of the present invention, the voltage switching module 2 is specifically used to set the first control signal to an enable bit and set the second and third control signals to a low level when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3; when the power supply of the first low-dropout linear regulator module is stable, the second control signal is set to a low level and the third and fourth control signals are set to a high level, so as to use the second low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3.

[0051] See Figure 3 , Figure 3 This is a block diagram of the internal structure of a power management module in a Wi-Fi chip according to an embodiment of the present invention. Powered by a 3.3V power supply, it includes five modules: a voltage switching module 2 (DCDC), a system OFF area power supply module 3 (CLDO), a system ON area power supply module 1 (HLDO), a one-time programmable memory power supply module (ELDO), and a 32K clock output signal (OSC_CLK_32K). These five modules are described below.

[0052] The voltage switching module 2 has a 3.3V input and a 1.5V output power supply VO15P, which is used to power the RF analog module and the system OFF area power supply module 3. The voltage switching module 2 includes a first low dropout linear regulator (SLDO), a second low dropout linear regulator (LDO mode), a buck module (BUCK mode), and some control logic. The first low dropout linear regulator is used to provide the startup current when the system is first started to ensure a smooth power-on process. The second low dropout linear regulator and the buck module are two optional power supply methods when the system is working normally.

[0053] The system OFF area power supply module 3 (CLDO) inputs a 1.5V power supply VO15 and outputs a 1.1V power supply VD11D, which is used to power the modules in the system OFF area. The output of this power supply can be controlled and enabled by the OFF area power-on control signal (anapar_ldo

[12] ).

[0054] The system ON zone power supply module 1 (HLDO) has an input of 3.3V and an output of 1.1V, VD11H, which is used to power the modules in the system ON zone.

[0055] The programmable memory power supply module (ELDO) has a 3.3V input and a 2.5V output power supply VD25P, which is used to power the one-time programmable memory module (EFUSE) during programming. The power supply output has a switch, which is controlled by the one-time programmable memory module power supply enable signal (r_SYM_LDOE25_EN) in the register.

[0056] OSC_CLK_32K is a 32K clock calibration module for low-power scenarios. It is powered by 3.3V and is enabled by the 32K clock enable signal (r_WL_32K_EN).

[0057] When the system is powered on, the voltage switching module 2 sets the first control signal to the enable bit, that is, by... Figure 3 When the switch at the location of the first low-dropout linear regulator module is closed, the second and third control signals are set to low level (0). At this time, regardless of whether the fourth control signal is high or low, the third and fourth control signals, after an AND operation, both result in 0. This result is then ORed with the 0 potential of the second control signal, resulting in 0, thus selecting the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3. When the power supply from the first low-dropout linear regulator module is stable, the second control signal is set low (0), meaning the switch at the location of the RF analog module is opened. The third and fourth control signals are then set high (1), and after an AND operation, both result in 1. This result is then ORed with the 0 potential of the second control signal, resulting in 1. Therefore, regardless of whether the first control signal is high or low, the second low-dropout linear regulator module will ultimately be selected to supply power to the RF analog module and the system OFF area power supply module 3.

[0058] In one specific embodiment of the present invention, the voltage switching module 2 is specifically used to set the first control signal to an enable bit and set the second and third control signals to a low level when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3; when the power supply of the first low-dropout linear regulator module is stable, the second control signal is set to a high level and the third and fourth control signals are set to a low level, so as to use the step-down module to supply power to the RF analog module and the system OFF area power supply module 3.

[0059] like Figure 3 As shown, when the system is powered on, the voltage switching module 2 sets the first control signal to the enable bit, that is, by... Figure 3When the switch at the location of the first low-dropout linear regulator module is closed, the second and third control signals are set to low level (0). At this time, regardless of whether the fourth control signal is high or low, the third and fourth control signals, after an AND operation, both result in 0. This result is then ORed with the second control signal at level 0, resulting in 0. This selects the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module 3. When the power supply from the first low-dropout linear regulator module is stable, the second control signal is set to high level (1), the switch at the location of the RF analog module is closed, and the third and fourth control signals are set to low level (0). The third and fourth control signals, after an AND operation, both result in 0. This result is then ORed with the second control signal at level 1, resulting in 1. Therefore, regardless of whether the first control signal is high or low, the buck module will ultimately be selected to supply power to the RF analog module and the system OFF area power supply module 3.

[0060] As shown in Table 1, Table 1 is the control logic table for the three power supply modes inside the voltage switching module 2.

[0061] Table 1. Control logic table for the three power supply modes inside voltage switching module 2

[0062]

[0063] The logic circuit controls the following functions:

[0064] The first low dropout linear regulator (SLDO) provides a low startup current at the initial power-on stage to ensure a smooth power-on process;

[0065] The second low-dropout linear regulator (LDO mode) and buck regulator (BUCK mode) are mutually exclusive, and only one can be selected. The default is BUCK mode.

[0066] Whether in the second low-dropout linear regulator (LDO) mode or the buck regulator (BUCK) mode, no output will be generated regardless of whether the first low-dropout linear regulator (SLDO) is turned on or off.

[0067] See Figure 4 and Figure 5 , Figure 4 This is a timing diagram illustrating how a second low-dropout linear regulator module supplies power to a Wi-Fi chip according to an embodiment of the present invention. Figure 5This is a timing diagram of powering a Wi-Fi chip using a step-down module in an embodiment of the present invention. Wherein, T1 is the time waiting for the first low-dropout linear regulator (SLDO) module to stabilize its power supply, T2 is the time waiting for the second low-dropout linear regulator (LDO mode) or step-down module (BUCK mode) to stabilize its power supply, and T3 is the time waiting for the system OFF zone power supply module 3 (CLDO) to stabilize its power supply.

[0068] In one specific embodiment of the present invention, the system may further include:

[0069] The power supply detection module is used to acquire the first level control feedback signals corresponding to the first control signal, the second control signal, and the third control signal; to perform power supply detection on the first low dropout linear regulator module based on the first level control feedback signal, the first control signal, the second control signal, the third control signal, and the system state machine; to acquire the second level control feedback signals corresponding to the second control signal, the third control signal, and the fourth control signal; and to perform power supply detection on the second low dropout linear regulator module and the buck module based on the second level control feedback signal, the second control signal, the third control signal, the fourth control signal, and the system state machine.

[0070] The power supply system for the Wi-Fi chip provided in this invention may further include a power supply detection module. The power supply detection module acquires first-level control feedback signals corresponding to the first, second, and third control signals. Based on these first-level control feedback signals, the first, second, and third control signals, and the system state machine, it performs power supply detection on the first low-dropout linear regulator module. The power supply detection module also acquires second-level control feedback signals corresponding to the second, third, and fourth control signals. Based on these second-level control feedback signals, the second, third, and fourth control signals, and the system state machine, it performs power supply detection on the second low-dropout linear regulator module and the buck module. The entire system's power-on process is controlled by the system state machine, which controls the control signals of the power management module, thereby achieving the goal of controlling the power-on of the entire system. By detecting the Wi-Fi chip power supply system, the reliability of the Wi-Fi chip power supply system is improved.

[0071] The specific implementation of detecting the startup current of the first low dropout linear regulator module (SLDO):

[0072] The control signal for enabling the SLDO startup current is the first control signal (pow_ldo14). The detection approach is to check whether this signal arrives under a specific state machine condition. The specific implementation is as follows:

[0073] The following code is used to detect the PON_SCFG state machine:

[0074] sequence s_sys_pmc_state_PON_SCFG;

[0075] sys_pmc_state == PON_SCFG;

[0076] endsequence

[0077] The following code is used to detect the arrival of pow_ldo14:

[0078] sequence s_rose_pow_ldo14;

[0079] @(posedge ck12m) ($rose(pow_ldo14),$display("signal pow_ldo14 arrivedat %t\n",$time));

[0080] endsequence

[0081] The following code is used to detect the arrival of pow_ldo14 in the PON_SCFG state machine:

[0082] property p_power_on_pow_ldo14;

[0083] @(posedge ck12m) s_sys_pmc_state_PON_SCFG |=> s_rose_pow_ldo14;

[0084] endproperty

[0085] The following code is a concrete implementation of assertions:

[0086] a_power_on_pow_ldo14: assert property(p_power_on_pow_ldo14);

[0087] The specific implementations for detecting LDO mode or BUCK mode are as follows:

[0088] The specific implementation of LDO mode detection:

[0089] In LDO mode, the control signals of the PMU are the third control signal (pow_ldo15), the fourth control signal (anaparsw_mac

[46] ), and the second control signal (pow_sw), with values ​​of 1, 1, and 0 respectively. The specific implementation is as follows:

[0090] 1. Conditions for obtaining LDO mode detection

[0091] wire ldo_assert_disable;

[0092] The following code defines the conditions for obtaining the LDO mode:

[0093] assign ldo_assert_disable = spsldo_sel;

[0094] 2. Check pow_ldo15 and anaparsw_mac

[46]

[0095] The following code is used to detect the PON_LDO15 state machine:

[0096] sequence s_sys_pmc_state_PON_LDO15;

[0097] sys_pmc_state == PON_LDO15;

[0098] endsequence

[0099] The following code is used to detect the arrival of pow_ldo15 and anaparsw_mac46:

[0100] sequence s_pow_ldo15_and_anaparsw_mac46;

[0101] pow_ldo15 && anaparsw_mac

[46] ;

[0102] endsequence

[0103] property p_power_on_ldo_pow_ldo15_anaparsw_mac46;

[0104] @(posedge ck12m) disable iff (ldo_assert_disable);

[0105] s_sys_pmc_state_PON_LDO15 |-> s_pow_ldo15_and_anaparsw_mac46;

[0106] endproperty

[0107] The following code is a concrete implementation of assertions:

[0108] a_power_on_ldo_pow_ldo15_anaparsw_mac46: assert property (p_power_on_ldo_pow_ldo15_anaparsw_mac46);

[0109] 3. Check pow_sw

[0110] The following code is used to detect the PON_SWEN state machine:

[0111] sequence s_sys_pmc_state_PON_SWEN;

[0112] sys_pmc_state == PON_SWEN;

[0113] endsequence

[0114] The following code is used to detect the arrival of pow_sw:

[0115] sequence s_pow_sw;

[0116] pow_sw;

[0117] endsequence

[0118] property p_power_on_ldo_pow_sw;

[0119] @(posedge ck12m) disable iff (ldo_assert_disable);

[0120] s_sys_pmc_state_PON_SWEN |-> not s_pow_sw;

[0121] endproperty

[0122] The following code is a concrete implementation of assertions:

[0123] a_power_on_ldo_pow_sw: assert property (p_power_on_ldo_pow_sw);

[0124] The specific implementation of detecting BUCK mode:

[0125] In LDO mode, the control signals of the PMU are the third control signal (pow_ldo15), the fourth control signal (anaparsw_mac

[46] ), and the second control signal (pow_sw), with values ​​of 0, 0, and 1 respectively. The specific implementation is as follows:

[0126] 1. Detection conditions for obtaining BUCK

[0127] The following code defines the conditions for obtaining a BUCK:

[0128] wire buck_assert_disable;

[0129] assign buck_assert_disable = !spsldo_sel;

[0130] 2. Check pow_ldo15 and anaparsw_mac

[46]

[0131] The following code is used to detect that pow_ldo15 and anaparsw_mac46 are 0.

[0132] sequence s_pow_ldo15_or_anaparsw_mac46;

[0133] pow_ldo15 || anaparsw_mac

[46] ;

[0134] endsequence

[0135] property p_power_on_buck_pow_ldo15_anaparsw_mac46;

[0136] @(posedge ck12m) disable iff (ldo_assert_disable);

[0137] s_sys_pmc_state_PON_LDO15 |-> not s_pow_ldo15_or_anaparsw_mac46;

[0138] endproperty

[0139] The following code is a concrete implementation of assertions:

[0140] a_power_on_buck_pow_ldo15_anaparsw_mac46: assert property (p_power_on_buck_pow_ldo15_anaparsw_mac46);

[0141] 3. Check pow_sw

[0142] The following code is used to detect the arrival of pow_sw:

[0143] sequence s_rose_pow_sw;

[0144] @(posedge ck12m) ($rose(pow_sw),$display(“signal pow_sw arrived at %t\n”,$time));

[0145] endsequence

[0146] property p_power_on_buck_pow_sw;

[0147] @(posedge ck12m) disable iff (ldo_assert_disable);

[0148] s_sys_pmc_state_PON_SWEN |-> s_rose_pow_sw;

[0149] endproperty

[0150] The following code is a concrete implementation of assertions:

[0151] a_power_on_buck_pow_sw: assert property (p_power_on_buck_pow_sw);

[0152] Detection system OFF area power supply module 3 (CLDO):

[0153] The control signal for the power supply CLDO in the system OFF area is anapar_ldo

[12] . The specific implementation of detecting whether this signal arrives under a specific state machine is as follows:

[0154] The following code is used to detect the PON_LDEN state machine:

[0155] sequence s_sys_pmc_state_PON_LDEN;

[0156] sys_pmc_state == PON_LDEN;

[0157] endsequence

[0158] The following code is used to detect the arrival of anapar_ldo

[12] :

[0159] sequence s_rose_anapar_ldo12;

[0160] @(posedge ck12m) ($rose(anapar_ldo

[12] ), $display(“signal anapar_ldo

[12] arrived at %t\n”, $time));

[0161] endsequence

[0162] The following code is used to detect the arrival of anapar_ldo

[12] in the PON_LDEN state machine:

[0163] property p_power_on_anapar_ldo12;

[0164] @(posedge ck12m) s_sys_pmc_state_PON_LDEN |=> s_rose_anapar_ldo12;

[0165] endproperty

[0166] The following code is a concrete implementation of assertions:

[0167] a_power_on_anapar_ldo12:assert property(p_power_on_anapar_ldo12);

[0168] In one specific embodiment of the present invention, the power supply detection module is specifically used to perform power supply detection on the first low-dropout linear regulator module, the second low-dropout linear regulator module, and the buck module using an assertion method, so as to provide an alarm prompt when a power supply abnormality is detected, thereby realizing automatic alarm when power-on abnormality occurs.

[0169] The power supply detection module uses assertions to perform power supply detection on the first low-dropout linear regulator module, the second low-dropout linear regulator module, and the buck module, issuing alarms when power supply abnormalities are detected. By using assertions to detect key signals during the power-on process, problems can be quickly identified and located. This detection mechanism throughout the entire power-on process ensures that each power supply is functioning correctly, and if any abnormality occurs, a corresponding alarm is issued.

[0170] In one specific embodiment of the present invention, the system may further include:

[0171] The low-power mode control module is used to control the power supply of the system OFF area power supply module 3, the system ON area power supply module 1, the radio frequency analog module, and the system clock module according to the received low-power power supply mode selection command, so that the system can operate in the corresponding low-power power supply mode.

[0172] The low-power mode control module receives low-power power supply mode selection commands and, based on these commands, controls the power supply of the system's OFF zone power supply module 3, system ON zone power supply module 1, RF analog module, and system clock module to ensure the system operates in the corresponding low-power power supply mode. By employing a power supply scheme that partially disables the clock and power supply, the Wi-Fi chip can be powered in different low-power modes, further reducing power consumption and saving energy.

[0173] Table 2 shows the power supply of the Wi-Fi chip in different low-power modes. ACTIVE represents the normal working scenario, while LPS, RFOFF, SUSPEND, and POWER_DOWN are four different low-power modes when the Wi-Fi chip is working.

[0174] Table 2. Power supply status of Wi-Fi chip in different low-power modes

[0175]

[0176] Wi-Fi chips in Timed Wake-up Mode (LPS mode) require rapid wake-up. In this mode, the power is not turned off, and power consumption is reduced mainly by turning off the clocks of each module. OSC_CLK_32K is mainly used to provide a low-power clock of 32K in LPS mode.

[0177] The RF analog module power-off mode (RFOFF mode) reduces power consumption by turning off the power supply to the RF module. Here, it mainly turns off the power supply VO15P.

[0178] The power supply mode of the RF analog module and system OFF area power supply module 3 (SUSPEND mode) further reduces power consumption by turning off the power supply VO15P of the RF module and the power supply VD11H of the OFF area.

[0179] In the standby mode (POWER_DOWN mode), the chip consumes the least power. At the same time, VD11D in the ON area, VD11H in the OFF area, and V015P for RF power supply are turned off. Only GPIO and power supply for some core areas are retained for external wake-up.

[0180] Corresponding to the above system embodiments, the present invention also provides a power supply method for a Wi-Fi chip. The power supply method for a Wi-Fi chip described below and the power supply system for a Wi-Fi chip described above can be referred to in correspondence.

[0181] See Figure 6 , Figure 6 This is a flowchart illustrating one embodiment of a power supply method for a Wi-Fi chip according to the present invention. The method may include the following steps:

[0182] S601: When the system is powered on, power is supplied to the ON area of ​​the system.

[0183] S602: When the system is powered on, the first low-dropout linear regulator module is used to power the RF analog module and the system OFF area power supply module.

[0184] S603: When the first low-dropout linear regulator provides stable power, the second low-dropout linear regulator module or buck module is used to power the RF analog module and the system OFF area power supply module.

[0185] S604: When the power supply to the second low-dropout linear regulator module or the buck module is stable, power is supplied to the OFF area of ​​the system.

[0186] As described in the above technical solution, the first low-dropout linear regulator module supplies power to the system during startup, ensuring a smooth power-on process. Two selectable power supply modes are provided: a second low-dropout linear regulator module and a buck module, for power supply in normal operating mode. When the first low-dropout linear regulator module provides stable power to the RF analog module, the second low-dropout linear regulator module or the buck module is selected to power the Wi-Fi chip in normal operating mode, based on power requirements. When the second low-dropout linear regulator module or the buck module provides stable power, the system OFF area power supply module is then used to power the system OFF area. This achieves staged power supply to each module in the Wi-Fi chip, ensuring the stability of the Wi-Fi chip's power supply, improving Wi-Fi chip performance, and extending the Wi-Fi chip's lifespan.

[0187] In one specific embodiment of the present invention, step S602 may include the following steps:

[0188] When the system is powered on, the first low-dropout linear regulator module is used to power the RF analog module and the system OFF area power supply module through logic gate circuit signal control.

[0189] Accordingly, step S603 may include the following steps:

[0190] When the first low-dropout linear regulator module has a stable power supply, the second low-dropout linear regulator module or the buck module is used to supply power to the RF analog module and the system OFF area power supply module through logic gate circuit signal control.

[0191] In one specific embodiment of the present invention, when the system is powered on, the first low-dropout linear regulator module is used to supply power to the radio frequency analog module and the system OFF area power supply module through logic gate circuit signal control, which may include the following steps:

[0192] When the system is powered on, the first control signal, the second control signal and the third control signal are controlled by level control so that the first low dropout linear regulator module can supply power to the radio frequency analog module and the system OFF area power supply module.

[0193] Correspondingly, when the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or a buck module is used to supply power to the RF analog module and the system OFF area power supply module, controlled by logic gate circuit signals. This may include the following steps:

[0194] When the first low-dropout linear regulator module has a stable power supply, the second, third, and fourth control signals are controlled to supply power to the RF analog module and the system OFF area power supply module using the second low-dropout linear regulator module or the buck module.

[0195] In one specific embodiment of the present invention, when the system is powered on, level control is performed on the first control signal, the second control signal, and the third control signal to supply power to the radio frequency analog module and the system OFF area power supply module using the first low-dropout linear regulator module. This may include the following steps:

[0196] The first control signal is set to the enable bit, and the second and third control signals are set to low level, so as to use the first low dropout linear regulator module to power the RF analog module and the system OFF area power supply module.

[0197] Accordingly, when the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or the buck module is used to supply power to the RF analog module and the system OFF area power supply module by controlling the levels of the second control signal, the third control signal, and the fourth control signal. This can include the following steps:

[0198] When the first low-dropout linear regulator module provides stable power, the second control signal is set to low level, and the third and fourth control signals are set to high level, so as to use the second low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module.

[0199] In one specific embodiment of the present invention, when the system is powered on, level control is performed on the first control signal, the second control signal, and the third control signal to supply power to the radio frequency analog module and the system OFF area power supply module using the first low-dropout linear regulator module. This may include the following steps:

[0200] When the system is powered on, the first control signal is set to the enable bit, and the second and third control signals are set to low level, so as to use the first low dropout linear regulator module to power the RF analog module and the system OFF area power supply module.

[0201] Accordingly, when the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or the buck module is used to supply power to the RF analog module and the system OFF area power supply module by controlling the levels of the second control signal, the third control signal, and the fourth control signal. This can include the following steps:

[0202] When the first low-dropout linear regulator module has a stable power supply, the second control signal is set to a high level, and the third and fourth control signals are set to a low level, so as to use the buck module to supply power to the RF analog module and the system OFF area power supply module.

[0203] In one specific embodiment of the present invention, the method may further include the following steps:

[0204] Acquire the first-level control feedback signals corresponding to the first control signal, the second control signal, and the third control signal;

[0205] Based on the first level control feedback signal, the first control signal, the second control signal, the third control signal, and the system state machine, the power supply of the first low dropout linear regulator module is detected.

[0206] Acquire the second-level control feedback signals corresponding to the second, third, and fourth control signals; based on the second-level control feedback signals, the second control signals, the third control signals, the fourth control signals, and the system state machine, perform power supply detection on the second low-dropout linear regulator module and the buck module.

[0207] In one specific embodiment of the present invention, power supply detection of the first low-dropout linear regulator module may include the following steps:

[0208] The first low-dropout linear regulator module is powered by an assertion method to detect power supply abnormalities and provide an alarm when an abnormality is detected.

[0209] The power supply test for the second low-dropout linear regulator module and the buck module may include the following steps:

[0210] Assertion is used to detect the power supply of the second low-dropout linear regulator module and the buck module, so as to provide an alarm when an abnormal power supply is detected.

[0211] In one specific embodiment of the present invention, the method may further include the following steps:

[0212] Based on the received low-power power supply mode selection command, the power supply modules in the system OFF area, the system ON area, the RF analog module, and the system clock module are powered on and off to enable the system to operate in the corresponding low-power power supply mode.

[0213] Corresponding to the above method embodiments, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the following steps:

[0214] When the system is powered on, power is supplied to the ON area of ​​the system; when the system is powered on, the first low-dropout linear regulator module supplies power to the RF analog module and the power supply module in the OFF area of ​​the system; when the power supply from the first low-dropout linear regulator module is stable, the second low-dropout linear regulator module or the buck module supplies power to the RF analog module and the power supply module in the OFF area of ​​the system; when the power supply from the second low-dropout linear regulator module or the buck module is stable, power is supplied to the OFF area of ​​the system.

[0215] The computer-readable storage medium may include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0216] For a description of the computer-readable storage medium provided by the present invention, please refer to the above method embodiments; the present invention will not be described in detail here.

[0217] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The methods and computer-readable storage media disclosed in the embodiments are described simply because they correspond to the systems disclosed in the embodiments; relevant details can be found in the system section.

[0218] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A power supply system for a Wi-Fi chip, characterized in that, include: The system ON zone power supply module is used to supply power to the system ON zone when the system is powered on. A voltage switching module is used to supply power to the RF analog module and the system OFF area power supply module using a first low-dropout linear regulator module when the system is powered on; when the first low-dropout linear regulator module provides stable power to the RF analog module, a second low-dropout linear regulator module or a buck module is used to supply power to the RF analog module and the system OFF area power supply module. The system OFF area power supply module is used to supply power to the system OFF area when the power supply of the second low dropout linear regulator module or the buck module is stable; The voltage switching module is specifically used to control, through logic gate circuit signals, when the system is powered on, to supply power to the RF analog module and the system OFF area power supply module using the first low dropout linear regulator module; when the power supply from the first low dropout linear regulator module is stable, it is controlled through logic gate circuit signals to supply power to the RF analog module and the system OFF area power supply module using the second low dropout linear regulator module or the buck module. The voltage switching module is specifically used to control the levels of the first control signal, the second control signal, and the third control signal when the system is powered on, so as to use the first low-dropout linear regulator module to supply power to the radio frequency analog module and the system OFF area power supply module; when the power supply of the first low-dropout linear regulator module is stable, it controls the levels of the second control signal, the third control signal, and the fourth control signal, so as to use the second low-dropout linear regulator module or the buck module to supply power to the radio frequency analog module and the system OFF area power supply module.

2. The power supply system of the Wi-Fi chip according to claim 1, wherein, The voltage switching module is specifically configured to, when the system is powered on, set the first control signal to an enable bit and set the second and third control signals to a low level, so as to use the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module; when the power supply from the first low-dropout linear regulator module is stable, set the second control signal to a low level and set the third and fourth control signals to a high level, so as to use the second low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module.

3. The power supply system of a Wi-Fi chip according to claim 1, wherein, The voltage switching module is specifically configured to, when the system is powered on, set the first control signal to an enable bit and set the second and third control signals to a low level, so as to use the first low-dropout linear regulator module to supply power to the RF analog module and the system OFF area power supply module; when the power supply from the first low-dropout linear regulator module is stable, set the second control signal to a high level and set the third and fourth control signals to a low level, so as to use the buck module to supply power to the RF analog module and the system OFF area power supply module.

4. The power supply system of the Wi-Fi chip according to claim 1, wherein, Also includes: The power supply detection module is used to acquire the first level control feedback signal corresponding to the first control signal, the second control signal, and the third control signal; Based on the first level control feedback signal, the first control signal, the second control signal, the third control signal, and the system state machine, power supply detection is performed on the first low dropout linear regulator module; the second level control feedback signal corresponding to the second control signal, the third control signal, and the fourth control signal is obtained; based on the second level control feedback signal, the second control signal, the third control signal, the fourth control signal, and the system state machine, power supply detection is performed on the second low dropout linear regulator module and the buck module.

5. The power supply system of the Wi-Fi chip according to claim 4, wherein, The power supply detection module is specifically used to perform power supply detection on the first low-dropout linear regulator module, the second low-dropout linear regulator module, and the buck module using an assertion method, so as to provide an alarm when an abnormal power supply is detected.

6. The power supply system for the Wi-Fi chip according to any one of claims 1 to 5, characterized in that, Also includes: The low-power mode control module is used to control the power supply of the system OFF area power supply module, the system ON area power supply module, the radio frequency analog module, and the system clock module according to the received low-power power supply mode selection instruction, so that the system can operate in the corresponding low-power power supply mode.

7. A power supply method of a Wi-Fi chip, characterized by, include: When the system is powered on, power is supplied to the ON area of ​​the system; When the system is powered on, the first low-dropout linear regulator module is used to power the RF analog module and the system OFF area power supply module; When the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or the buck module is used to power the radio frequency analog module and the system OFF area power supply module. When the power supply to the second low-dropout linear regulator module or buck module is stable, power is supplied to the OFF area of ​​the system. Specifically, when the system is powered on, the first low-dropout linear regulator module supplies power to the RF analog module and the system's OFF area power supply module, including: When the system is powered on, the first low-dropout linear regulator module is used to power the RF analog module and the system OFF area power supply module through logic gate circuit signal control. Accordingly, when the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or a step-down module is used to supply power to the RF analog module and the system OFF area power supply module, including: When the first low-dropout linear regulator module has a stable power supply, the second low-dropout linear regulator module or the buck module is used to supply power to the RF analog module and the system OFF area power supply module through logic gate circuit signal control. When the system is powered on, it is controlled by logic gate circuit signals to supply power to the RF analog module and the system OFF area power supply module using the first low-dropout linear regulator module, including: When the system is powered on, the first control signal, the second control signal and the third control signal are controlled by level control so that the first low dropout linear regulator module can supply power to the radio frequency analog module and the system OFF area power supply module. Correspondingly, when the first low-dropout linear regulator module provides stable power, the second low-dropout linear regulator module or a buck module is used to supply power to the RF analog module and the system OFF area power supply module, controlled by logic gate circuit signals. This includes: When the first low-dropout linear regulator module has a stable power supply, the second, third, and fourth control signals are controlled to supply power to the RF analog module and the system OFF area power supply module using the second low-dropout linear regulator module or the buck module.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the power supply method for the Wi-Fi chip as described in claim 7.

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