Integrated circuit, control method thereof, and power adapter

Abstract

The present application provides an integrated circuit, a control method thereof, and a power adapter. The integrated circuit includes: a fault detection module; a switch module electrically connected to the fault detection module and configured to activate the fault detection module by turning on the switch module; and a reference voltage generation module electrically connected to the switch module and configured to generate a preset reference voltage in response to initial startup of the integrated circuit and provide it to the switch module to drive the switch module to conduct, wherein the preset reference voltage is lower than the initial startup voltage of the integrated circuit. During initial startup of the integrated circuit, the present application drives the switch module to conduct by providing a rough preset reference voltage, thereby pre-activating the fault detection module and effectively ensuring that the internal circuit is in a known logic state. Furthermore, by checking the fault status before soft startup, the fault condition can be detected in a timely manner, triggering protection in a timely manner, thereby improving the safety and operating efficiency of the integrated circuit.

Description

Technical Field

[0001] The present application relates to the technical field of integrated circuits (ICs), and in particular to a power management integrated circuit, a fault pin startup control method thereof, and a power adapter. Background Art

[0002] A switching power supply is a power supply device, such as a charger or power adapter. It is used to convert power to provide power to electronic devices or other loads. A switching power supply generally includes a power management integrated circuit, or PMIC.

[0003] The power management integrated circuit generally includes a fault pin, which is used to indicate a fault condition in the operation of the integrated circuit. For example, pulling the fault pin to a low level indicates that a fault condition exists in the integrated circuit. Conversely, if the fault pin is an open-drain output pin, it indicates that the integrated circuit does not have a fault condition or no fault condition is detected. The fault signal output by the fault pin can be transmitted to the MCU (microprocessor unit) or other protection circuit of the power adapter to trigger a shutdown or protection action. Among them, the fault condition can be overcurrent protection (OCP), overvoltage protection (OVP), overtemperature protection (OTP), overload protection (OLP) or undervoltage protection, etc.

[0004] However, if the fault circuitry and trigger conditions are not carefully designed during the IC's startup process, the fault may be falsely triggered or may not trigger in time to indicate a true fault. For example, during initial startup, while the IC's internal voltage rails are establishing, the internal circuitry may result in undefined logic states because its internal bias voltages are not yet within a valid range.

[0005] Furthermore, depending on the fault logic design, the IC may not be able to respond to protection signals in a timely manner for a certain period of time during startup. In some designs, the fault signal is disabled during the IC's soft start, resulting in a failure to detect the fault condition and trigger protection in a timely manner. Summary of the Invention

[0006] The main purpose of this application is to provide an integrated circuit and a control method thereof, and a power adapter to improve the above-mentioned defects in the prior art.

[0007] This application solves the above technical problems through the following technical solutions:

[0008] As one aspect of the present application, an integrated circuit is provided, comprising:

[0009] Fault detection module;

[0010] a switch module, electrically connected to the fault detection module and configured to start the fault detection module by turning on the switch module;

[0011] A reference voltage generating module is electrically connected to the switch module and is configured to generate a preset reference voltage in response to initial startup of the integrated circuit and provide it to the switch module to drive the switch module to conduct, wherein the preset reference voltage is lower than the initial startup voltage of the integrated circuit.

[0012] As an optional implementation manner, the reference voltage generating module is electrically connected to the power input terminal of the integrated circuit;

[0013] In response to detecting that the input voltage of the power input terminal is less than or equal to the undervoltage protection voltage of the integrated circuit, the reference voltage generating module is configured to generate the preset reference voltage and provide it to the switch module to drive the switch module to conduct.

[0014] As an optional implementation, the switch module includes a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor);

[0015] The reference voltage generating module is configured to provide the preset reference voltage to the MOSFET to drive the gate of the MOSFET to turn on.

[0016] As an optional implementation, the reference voltage generating module includes a plurality of cascaded triggers;

[0017] The preset reference voltage is generated by the plurality of cascaded triggers and provided to the switch module to drive the switch module to be turned on.

[0018] As an optional implementation, the fault detection module includes a fault detection unit, a fault register and a fault pin;

[0019] The integrated circuit is configured to detect a fault condition of the fault register after starting the fault detection module and before a soft start of the integrated circuit, the fault condition being generated by the fault detection unit;

[0020] The integrated circuit is further configured to pull the fault pin low to shut down the integrated circuit in response to the presence of the fault condition.

[0021] As an optional implementation, the fault detection module further includes a debounce unit;

[0022] The fault detection unit is electrically connected to the debouncing unit;

[0023] The debouncing unit is configured to eliminate the false fault signal generated by the fault detection unit.

[0024] As an optional implementation, the fault detection unit includes an over-temperature protection unit;

[0025] The over-temperature protection unit is configured to set a temperature protection threshold of the over-temperature protection unit to a first preset temperature value in response to an initial startup of the integrated circuit or an internal power reset of the integrated circuit;

[0026] The over-temperature protection unit is configured to set the temperature protection threshold to a second preset temperature value in response to the integrated circuit being in an operating state, wherein the second preset temperature value is greater than the first preset temperature value.

[0027] As an optional implementation, the integrated circuit is a power management integrated circuit.

[0028] As another aspect of the present application, a power adapter is provided, comprising the integrated circuit as described above.

[0029] As another aspect of the present application, a control method of an integrated circuit is provided, wherein the integrated circuit includes a fault detection module, a switch module, and a reference voltage generation module;

[0030] The switch module is electrically connected to the fault detection module and the reference voltage generation module respectively;

[0031] The control method includes:

[0032] In response to detecting an initial startup of the integrated circuit, controlling the reference voltage generating module to generate a preset reference voltage, wherein the preset reference voltage is less than an initial startup voltage of the integrated circuit;

[0033] Providing the preset reference voltage to the switch module;

[0034] In response to the switch module receiving the preset reference voltage, the switch module is driven to be turned on to start the fault detection module.

[0035] As an optional implementation manner, the reference voltage generating module is electrically connected to the power input terminal of the integrated circuit;

[0036] The step of controlling the reference voltage generating module to generate a preset reference voltage in response to detecting the initial startup of the integrated circuit includes:

[0037] In response to detecting that the input voltage of the power input terminal is less than or equal to the undervoltage protection voltage of the integrated circuit, the reference voltage generating module is controlled to generate a preset reference voltage.

[0038] As an optional implementation, the switch module includes a MOSFET;

[0039] The step of providing the preset reference voltage to the switch module includes:

[0040] Providing the preset reference voltage to the MOSFET;

[0041] The step of driving the switch module to be turned on to start the fault detection module in response to the switch module receiving the preset reference voltage includes:

[0042] In response to the MOSFET receiving the preset reference voltage, the gate of the MOSFET is driven to be turned on to start the fault detection module.

[0043] As an optional implementation, the reference voltage generating module includes a plurality of cascaded triggers;

[0044] The step of controlling the reference voltage generating module to generate a preset reference voltage includes:

[0045] The plurality of cascaded triggers are controlled to generate a preset reference voltage.

[0046] As an optional implementation, the fault detection module includes a fault detection unit, a fault register and a fault pin;

[0047] The control method further includes:

[0048] After starting the fault detection module and before soft start of the integrated circuit, detecting a fault condition of the fault register, the fault condition being generated by the fault detection unit;

[0049] In response to the presence of the fault condition, the fault pin is pulled low to shut down the integrated circuit.

[0050] As an optional implementation, the fault detection module further includes a debouncing unit;

[0051] The fault detection unit is electrically connected to the debouncing unit;

[0052] The debouncing unit is configured to eliminate the false fault signal generated by the fault detection unit.

[0053] As an optional implementation, the fault detection unit includes an over-temperature protection unit;

[0054] The control method further includes:

[0055] In response to an initial startup of the integrated circuit or an internal power reset of the integrated circuit, setting a temperature protection threshold of the over-temperature protection unit to a first preset temperature value;

[0056] In response to the integrated circuit being in an operating state, the temperature protection threshold is set to a second preset temperature value, wherein the second preset temperature value is greater than the first preset temperature value.

[0057] As an optional implementation, the integrated circuit is a power management integrated circuit.

[0058] As another aspect of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method of the integrated circuit as described above when executing the computer program.

[0059] As another aspect of the present application, a computer-readable medium is provided, on which computer instructions are stored. When the computer instructions are executed by a processor, the control method of the integrated circuit as described above is implemented.

[0060] Based on the content of this application, those skilled in the art can understand other aspects of the content of this application.

[0061] The positive progress of this application is:

[0062] The integrated circuit, its control method, and power adapter provided in the present application, during the initial startup of the integrated circuit, drive the conduction of the switch module by providing a rough preset reference voltage, so that the fault detection module is pre-started, effectively ensuring that the internal circuit is in a known logical state, and checking the fault status before slow startup, so that the fault condition can be detected in time and protection can be triggered in time, thereby improving the safety of the integrated circuit and further improving the working efficiency of the integrated circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The features and advantages of the present invention will be better understood after reading the detailed description of the embodiments of the present invention in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components with similar related properties or features may have the same or similar reference numerals.

[0064] Figure 1 1 is a partial structural diagram of an integrated circuit according to an embodiment of the present application.

[0065] Figure 2 1 is a partial structural diagram of a fault detection module of an integrated circuit according to an embodiment of the present application.

[0066] Figure 3 FIG. 1 is a partial circuit diagram of an integrated circuit according to an embodiment of the present application.

[0067] Figure 4 FIG. 4 is a flow chart of a control method of an integrated circuit according to another embodiment of the present application.

[0068] Figure 5 2 is a schematic structural diagram of an electronic device for implementing a control method for an integrated circuit according to another embodiment of the present application. DETAILED DESCRIPTION

[0069] The present application is further described below by way of examples, but the present application is not limited to the scope of the examples.

[0070] It should be noted that references in the specification to "one embodiment," "an alternative embodiment," "another embodiment," etc. indicate that the described embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include that particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, whether or not explicitly described, it is within the knowledge of those skilled in the relevant art to implement such feature, structure, or characteristic in conjunction with other embodiments.

[0071] In the description of the contents of this application, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the contents of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the contents of this application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the contents of this application, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0072] In the description of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present application in specific contexts.

[0073] The terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a", "an", "an item" used herein are also intended to include the plural. It should also be understood that the terms "comprise" and / or "include" used herein specify the presence of stated features, integers, steps, operations, units and / or components, and do not preclude the presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0074] In order to overcome the above-mentioned defects that currently exist, this embodiment provides an integrated circuit, including: a fault detection module; a switch module, electrically connected to the fault detection module and configured to start the fault detection module by turning on the switch module; a reference voltage generation module, electrically connected to the switch module and configured to generate a preset reference voltage in response to the initial startup of the integrated circuit and provide it to the switch module to drive the switch module to be turned on, wherein the preset reference voltage is lower than the initial startup voltage of the integrated circuit.

[0075] In this embodiment, during the initial startup of the integrated circuit, a rough preset reference voltage is provided to drive the switch module to conduct, so that the fault detection module is pre-started, effectively ensuring that the internal circuit is in a known logic state, thereby improving the safety and working efficiency of the integrated circuit.

[0076] As an embodiment, this embodiment provides a power adapter, which mainly includes an integrated circuit.

[0077] In this embodiment, preferably, the power adapter can be an AC (alternating current)-DC (direct current) power adapter, but is not limited thereto, and can be adjusted and selected accordingly according to actual needs or possible needs.

[0078] In this embodiment, preferably, the integrated circuit is a power management integrated circuit, but is not limited thereto, and can be adjusted and selected accordingly according to actual needs or possible needs.

[0079] Power management integrated circuits (PMICs) come in many varieties, broadly categorized into voltage regulation and interface circuits. Voltage regulators include linear low-dropout (LDO) regulators, positive and negative output circuits, and pulse-width modulation (PWM) switching circuits. Interface circuits for power management primarily include interface drivers, motor drivers, power field-effect transistor (MOSFET) drivers, and high-voltage / high-current display drivers.

[0080] Power management discrete semiconductor devices include some traditional power semiconductor devices, which can be divided into two categories. One category includes rectifiers and thyristors; the other category is triode type, including power bipolar transistors, power field-effect transistors (MOSFETs) with MOS structure and insulated gate bipolar transistors (IGBTs).

[0081] The dominant part of power management semiconductors is power management integrated circuits, which can be roughly summarized into the following 8 types:

[0082] 1) AC / DC modulation integrated circuit, containing low-voltage control circuit and high-voltage switching transistor;

[0083] 2) DC / DC modulation integrated circuits, including step-up / step-down regulators and charge pumps;

[0084] 3) Power factor control PFC (power factor correction) pre-modulation integrated circuit, providing a power input circuit with power factor correction function;

[0085] 4) Pulse modulation or pulse amplitude modulation PWM (pulse width modulation) / PFM (pulse frequency modulation) control integrated circuit, which is a pulse frequency modulation and / or pulse width modulation controller used to drive an external switch;

[0086] 5) Linear modulation integrated circuits (such as linear low-dropout regulators (LDOs), including positive and negative regulators, and low-dropout LDO modulators;

[0087] 6) Battery charging and management integrated circuits, including battery charging, protection and power display integrated circuits, and "smart" battery integrated circuits capable of battery data communication;

[0088] 7) Hot-swappable board control integrated circuit (to eliminate the impact of inserting or removing another interface from the working system);

[0089] 8) MOSFET or IGBT (Insulated Gate Bipolar Transistor) switching function integrated circuit.

[0090] In AC / DC conversion, low on-state resistance meets the needs of more efficient adapters and power supplies in computer and telecommunications applications.

[0091] Specifically, as an optional implementation, Figure 1 and Figure 3 As shown, the integrated circuit mainly includes an undervoltage protection module 11 , a reference voltage generation module 12 , a switch driving module 13 , a switch module 14 and a fault detection module 15 .

[0092] The reference voltage generating module 12 is electrically connected to the power input terminal 10 of the integrated circuit, the power input terminal 10 is electrically connected to the undervoltage protection module 11, the switch driving module 13 is electrically connected to the undervoltage protection module 11 and the reference voltage generating module 12 respectively, and the switch module 14 is electrically connected to the switch driving module 13 and the fault detection module 15 respectively.

[0093] Undervoltage lockout (UVLO) is a circuit in electronic devices that cuts off power when the power supply voltage falls below the normal engineering level. In embedded systems, UVLO is often used to monitor battery voltage. If the voltage falls below a certain value, it directly cuts off power to protect the embedded system's circuits.

[0094] Many electronic devices have a UVLO function. For example, there is a UVLO circuit in the ballast, which directly cuts off the power supply if the voltage is too low.

[0095] For more stable operation, some power converters have a UVLO (undervoltage lockout) function. After the power is turned on, the UVLO function puts the internal circuits into a standby state until the power converter's input voltage (VIN) reaches the UVLO voltage, thereby reducing current consumption and preventing malfunctions.

[0096] In power management integrated circuits (ICs), voltage stability is crucial. Therefore, an undervoltage lockout (UVLO) circuit is integrated within the IC to improve power supply reliability and safety. UVLO circuits are also crucial for other ICs to enhance circuit reliability and stability.

[0097] In response to detecting that the input voltage of the power input terminal 10 is less than or equal to the undervoltage protection voltage of the undervoltage protection module 11, the reference voltage generation module 12 is configured to generate a preset reference voltage and provide it to the switch driving module 13. The switch driving module 13 drives the switch module 14 to be turned on, and the fault detection module 15 is started by turning on the switch module 14.

[0098] In this embodiment, during power-on, the preset reference voltage provided may be a rough reference voltage of approximately 1V, which is sufficient to drive the switch module 14. However, the preset reference voltage value is not specifically limited and may be adjusted and selected accordingly based on actual needs or possible needs.

[0099] As a preferred embodiment, the reference voltage generating module 12 may include a plurality of cascaded triggers, which generate the preset reference voltage and provide it to the switch module to drive the switch module to be turned on.

[0100] In this embodiment, the number of triggers may be at least three, but the implementation of the reference voltage generating module 12 and the number of triggers are not specifically limited and may be adjusted and selected according to actual needs or possible needs.

[0101] As a preferred embodiment, the switch module 14 may include a MOSFET, but is not limited thereto, and may be selected and adjusted accordingly according to actual needs or possible needs.

[0102] The reference voltage generating module is configured to provide the preset reference voltage to the MOSFET to drive the gate of the MOSFET to turn on.

[0103] like Figure 2 As shown, the fault detection module 15 mainly includes a fault detection unit 151 , a debounce unit 152 , a fault pin 153 and a fault register 154 .

[0104] The fault detection unit 151 is electrically connected to the de-bouncing unit 152, the de-bouncing unit 152 is electrically connected to the fault pin 153, and the fault pin 153 is electrically connected to the power management processing module 2 of the power management integrated circuit. For example, the power management processing module 2 can be an MCU or other protection circuit.

[0105] The fault detection unit 151 mainly includes an overvoltage protection unit, an overcurrent protection unit and an overtemperature protection unit, but is not limited thereto, and can be adjusted and selected accordingly according to actual needs or possible needs.

[0106] The integrated circuit is configured to detect the fault condition of the fault register 154 after the fault detection module 15 is started and before the integrated circuit soft-starts. The fault condition is generated by the fault detection unit 151 and may include input OVP (overvoltage protection), OCP (overcurrent protection), OTP (overtemperature protection), etc., to confirm whether there are any OVP, OCP, and OTP conditions. Usually, the most common faults during startup are OVP and OTP, especially OTP.

[0107] The integrated circuit is further configured to pull the fault pin to a low level in response to a fault condition to shut down the integrated circuit, i.e., disable circuit switching, thereby checking the fault status before soft start to avoid potential startup switching under OVP or OTP conditions.

[0108] The debouncing unit 152 is configured to eliminate the false fault signal and noise generated by the fault detection unit 151, thereby effectively avoiding false triggering.

[0109] As a preferred embodiment, the over-temperature protection unit is configured to set the temperature protection threshold of the over-temperature protection unit to a first preset temperature value in response to initial startup of the integrated circuit or internal power reset of the integrated circuit.

[0110] In this embodiment, the first preset temperature value may be approximately 100° C., but is not limited thereto and may be adjusted and selected accordingly according to actual needs or potential needs.

[0111] The over-temperature protection unit is configured to set the temperature protection threshold to a second preset temperature value in response to the integrated circuit being in an operating state, wherein the second preset temperature value is greater than the first preset temperature value.

[0112] In this embodiment, the second preset temperature value may be approximately 140° C., but is not limited thereto and may be adjusted and selected accordingly based on actual needs or potential needs.

[0113] In this embodiment, to effectively protect the IC from operating temperature, the temperature protection threshold is set relatively low during initial startup. Once operation is initiated, the temperature protection threshold is changed to a higher level. If the IC is shut down for any reason, the temperature protection threshold returns to the lower level upon internal power reset.

[0114] The power adapter and integrated circuit provided in this embodiment mainly have the following beneficial effects:

[0115] 1) When the integrated circuit starts up, it provides a rough, fast preset reference voltage to the switch module, so that the switch module is turned on and the fault detection module is set to a known state, ensuring timely and effective triggering of protection;

[0116] 2) When the internal power rail is powered on and before the soft start, the fault register is checked to confirm whether there are any fault conditions. If any fault conditions occur, the fault pin will be pulled low and the switch will be disabled, thereby improving the safety and working efficiency of the integrated circuit;

[0117] 3) By adding a debounce circuit to the fault detection module, false fault signals and noise are effectively eliminated, avoiding erroneous operations;

[0118] 4) The temperature protection threshold of the over-temperature protection unit can be switched and adjusted in real time according to the initial startup state and normal working state, thereby effectively protecting the integrated circuit, especially improving the safety of the integrated circuit in the case of frequent switch operation.

[0119] As another embodiment, this embodiment provides a control method for an integrated circuit, which is mainly applied to the integrated circuit in the above embodiment.

[0120] Specifically, if Figure 4 As shown, the control method of the integrated circuit provided in this embodiment mainly includes the following steps:

[0121] Step 101 : In response to detecting an initial startup of an integrated circuit, generate a preset reference voltage.

[0122] In this step, in response to detecting the initial startup of the integrated circuit, the reference voltage generating module is controlled to generate a preset reference voltage, wherein the preset reference voltage is lower than the initial startup voltage of the integrated circuit.

[0123] As a specific implementation, in this step, in response to detecting that the input voltage of the power input terminal is less than or equal to the undervoltage protection voltage of the integrated circuit, a plurality of cascaded triggers are controlled to generate a preset reference voltage.

[0124] Step 102: Provide a preset reference voltage to the switch module.

[0125] As a specific implementation, in this step, a preset reference voltage is provided to the MOSFET.

[0126] Step 103 : In response to the switch module receiving the preset reference voltage, the switch module is driven to be turned on to start the fault detection module.

[0127] As a specific implementation, in this step, in response to the MOSFET receiving a preset reference voltage, the gate of the MOSFET is driven to be turned on to start the fault detection module.

[0128] Step 104 : After starting the fault detection module and before soft starting of the integrated circuit, detect the fault condition of the fault register.

[0129] In this step, a fault condition is generated by a fault detection unit.

[0130] Step 105 : In response to a fault condition, pull the fault pin down to a low level to shut down the integrated circuit.

[0131] As an optional implementation manner, the control method further includes the following steps:

[0132] In response to an initial startup of the integrated circuit or an internal power reset of the integrated circuit, setting a temperature protection threshold of the over-temperature protection unit to a first preset temperature value;

[0133] In response to the integrated circuit being in an operating state, the temperature protection threshold is set to a second preset temperature value, wherein the second preset temperature value is greater than the first preset temperature value.

[0134] The integrated circuit control method provided in this embodiment has the following beneficial effects:

[0135] 1) When the integrated circuit starts up, it provides a rough, fast preset reference voltage to the switch module, so that the switch module is turned on and the fault detection module is set to a known state, ensuring timely and effective triggering of protection;

[0136] 2) When the internal power rail is powered on and before the soft start, the fault register is checked to confirm whether there are any fault conditions. If any fault conditions occur, the fault pin will be pulled low and the switch will be disabled, thereby improving the safety and working efficiency of the integrated circuit;

[0137] 3) By adding a debounce circuit to the fault detection module, false fault signals and noise are effectively eliminated, avoiding erroneous operations;

[0138] 4) The temperature protection threshold of the over-temperature protection unit can be switched and adjusted in real time according to the initial startup state and normal working state, thereby effectively protecting the integrated circuit, especially improving the safety of the integrated circuit in the case of frequent switch operation.

[0139] Figure 5 FIG2 is a schematic diagram of the structure of an electronic device according to the present embodiment. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the control method of the integrated circuit in the above embodiment is implemented. Figure 5 The electronic device 30 shown is only an example and should not limit the functions and scope of use of the embodiments of the present application.

[0140] like Figure 5 As shown, the electronic device 30 may be a general-purpose computing device, such as a server device. Components of the electronic device 30 may include, but are not limited to, the at least one processor 31, the at least one memory 32, and a bus 33 connecting different system components (including the memory 32 and the processor 31).

[0141] The bus 33 includes a data bus, an address bus, and a control bus.

[0142] The memory 32 may include a volatile memory, such as a random access memory (RAM) 321 and / or a cache memory 322 , and may further include a read-only memory (ROM) 323 .

[0143] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, such program modules 324 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0144] The processor 31 executes computer programs stored in the memory 32 to perform various functional applications and data processing, such as the control method of the integrated circuit in the above embodiment of the present application.

[0145] The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). Such communication may be performed via an input / output (I / O) interface 35. Furthermore, the model generating device 30 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 36. Figure 5 As shown, the network adapter 36 communicates with the other modules of the model-generated device 30 via the bus 33. It should be understood that, although not shown in the figures, other hardware and / or software modules may be used in conjunction with the model-generated device 30, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, RAID (RAID) systems, tape drives, and data backup storage systems.

[0146] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, depending on the embodiment of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0147] This embodiment further provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps in the integrated circuit control method in the above embodiment are implemented.

[0148] The readable storage medium may include, but is not limited to, a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0149] In a possible implementation, the present application can also be implemented in the form of a program product, which includes program code. When the program product is executed on a terminal device, the program code is used to enable the terminal device to execute the steps in the control method of the integrated circuit in the above embodiment.

[0150] The program code for executing the present application may be written in any combination of one or more programming languages, and the program code may be executed entirely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or entirely on the remote device.

[0151] Although the above describes specific embodiments of the present application, those skilled in the art will understand that these are merely illustrative and that the scope of protection of the present application is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications shall fall within the scope of protection of the present application.

Claims

1. An integrated circuit, characterized in that: include: Fault detection module; a switch module, electrically connected to the fault detection module and configured to start the fault detection module by turning on the switch module; a reference voltage generating module, electrically connected to the switch module and configured to generate a preset reference voltage in response to initial startup of the integrated circuit and provide the voltage to the switch module to drive the switch module to conduct, wherein the preset reference voltage is lower than the initial startup voltage of the integrated circuit; The reference voltage generating module includes a plurality of cascaded triggers; Generate the preset reference voltage through the cascaded plurality of triggers and provide the preset reference voltage to the switch module to drive the switch module to be turned on; The fault detection module includes a fault detection unit, a fault register and a fault pin; The integrated circuit is configured to detect a fault condition of the fault register after starting the fault detection module and before a soft start of the integrated circuit, the fault condition being generated by the fault detection unit; The integrated circuit is further configured to pull the fault pin low to shut down the integrated circuit in response to the presence of the fault condition.

2. The integrated circuit according to claim 1, wherein: The reference voltage generating module is electrically connected to the power input terminal of the integrated circuit; In response to detecting that the input voltage of the power input terminal is less than or equal to the undervoltage protection voltage of the integrated circuit, the reference voltage generating module is configured to generate the preset reference voltage and provide it to the switch module to drive the switch module to conduct.

3. The integrated circuit according to claim 1, wherein: The switch module includes a MOSFET; The reference voltage generating module is configured to provide the preset reference voltage to the MOSFET to drive the gate of the MOSFET to turn on.

4. The integrated circuit according to claim 1, wherein: The fault detection module also includes a debouncing unit; The fault detection unit is electrically connected to the debouncing unit; The debouncing unit is configured to eliminate the false fault signal generated by the fault detection unit.

5. The integrated circuit according to claim 1, wherein: The fault detection unit includes an over-temperature protection unit; The over-temperature protection unit is configured to set a temperature protection threshold of the over-temperature protection unit to a first preset temperature value in response to an initial startup of the integrated circuit or an internal power reset of the integrated circuit; The over-temperature protection unit is configured to set the temperature protection threshold to a second preset temperature value in response to the integrated circuit being in an operating state, wherein the second preset temperature value is greater than the first preset temperature value.

6. The integrated circuit according to any one of claims 1 to 5, characterized in that: The integrated circuit is a power management integrated circuit.

7. A power adapter, characterized in that: Comprising an integrated circuit as claimed in any one of claims 1 to 6.

8. A control method for an integrated circuit, characterized in that: The integrated circuit includes a fault detection module, a switch module and a reference voltage generation module; The switch module is electrically connected to the fault detection module and the reference voltage generation module respectively; The control method includes: In response to detecting an initial startup of the integrated circuit, controlling the reference voltage generating module to generate a preset reference voltage, wherein the preset reference voltage is less than an initial startup voltage of the integrated circuit; Providing the preset reference voltage to the switch module; In response to the switch module receiving the preset reference voltage, driving the switch module to be turned on to start the fault detection module; The preset reference voltage is generated based on a plurality of cascade-controlled triggers.

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