Standby wake-up circuit, control method and device, circuit board and electronic equipment

Abstract

The invention discloses a standby wake-up circuit, a control method, a control device, a circuit board and electronic equipment, and the standby wake-up circuit comprises a bridgeless PFC module which is used for being connected with a main power supply; the main control unit is connected with the bridgeless PFC module, and the main control unit is used for controlling the bridgeless PFC module; the first power supply conversion module is respectively connected with the bridgeless PFC module and the main control unit, and the first power supply conversion module is used for converting the voltage output by the bridgeless PFC module and supplying power to the main control unit; and the second power supply conversion module is connected with the main control unit, and the second power supply conversion module is used for receiving the wake-up voltage of the upper computer, converting the wake-up voltage and outputting the converted wake-up voltage to the main control unit to wake up the main control unit, so that the main control unit controls the bridgeless PFC module to utilize the main power supply to power on the main control unit. The standby wake-up circuit provided by the embodiment of the invention can wake up the main control unit in the standby mode with low power consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to a standby wake-up circuit, a control method, a device, a circuit board and an electronic device. Background Art

[0002] For devices powered by an external power supply, such as a single-chip microcomputer, when the external power supply to the single-chip microcomputer is cut off and the single-chip microcomputer is shut down, if the single-chip microcomputer needs to be woken up again, an additional device is usually required to achieve this. For example, some devices use power switching devices to implement a bridgeless PFC circuit with a power factor correction (PFC) function to power the control chip. Since the bridgeless PFC circuit must rely on the control chip to control the corresponding power switching devices to achieve current rectification, when the control chip is powered off and enters standby mode, the power switching devices in the bridgeless PFC circuit cannot be controlled to power the control chip before the control chip is powered on, resulting in the bridgeless PFC circuit being unable to wake up the control chip, which in turn causes the bridgeless PFC circuit to fail to work properly.

[0003] In the related art, an auxiliary power supply circuit needs to be set up for the bridgeless PFC circuit to supply power to the control chip separately. Therefore, even when the control chip is in standby mode, the auxiliary power supply circuit is still powered on, making it difficult to reduce the power consumption of the circuit. Therefore, how to achieve low power consumption to wake up the control chip in standby mode has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a standby wake-up circuit, a control method, a device, a circuit board and an electronic device, which can wake up a main control unit in standby mode with low power consumption.

[0005] In a first aspect, an embodiment of the present invention provides a standby wake-up circuit, comprising:

[0006] Bridgeless PFC module for access to the main power supply;

[0007] A main control unit connected to the bridgeless PFC module, the main control unit being used to control the bridgeless PFC module;

[0008] A first power conversion module, connected to the bridgeless PFC module and the main control unit respectively, the first power conversion module is used to convert the voltage output by the bridgeless PFC module and supply power to the main control unit;

[0009] A second power conversion module is connected to the main control unit. The second power conversion module is used to receive a wake-up voltage from a host computer, and convert the wake-up voltage and output it to the main control unit to wake up the main control unit, so that the main control unit controls the bridgeless PFC module to power on the main control unit using the main power supply.

[0010] According to the standby wake-up circuit provided by the embodiment of the present invention, at least the following beneficial effects are achieved: when the host computer needs to drive the main control unit, since the main control unit cannot control the bridgeless PFC module to work normally in the power-off state, the main power cannot pass through the bridgeless PFC module, and thus cannot wake up the main control unit. Therefore, a set of wiring harnesses can be used to connect the second power conversion module to the host computer, so that the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion of the second power conversion module, the converted wake-up voltage is output to the main control unit, thereby waking up the main control unit. Therefore, in the case where the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, so as to realize the wake-up control of the main control unit by the host computer. Compared with the method of using an additional auxiliary power supply circuit in the related art to supply power to the control chip separately, the standby wake-up circuit provided by the embodiment of the present invention can be completely powered off when the main control unit needs to be in the standby dormant state, and there is no need to maintain the auxiliary power supply circuit in the powered-on working state. The standby wake-up circuit has no power loss, and can reduce the power loss of the main control unit in the wake-up standby mode.

[0011] In the standby wake-up circuit provided in an embodiment of the present invention, the second power conversion module includes a wake-up input port for connecting to the host computer, and a wake-up control chip for controlling the wake-up of the main control unit, the wake-up control chip includes an enable port, a power supply port and an output port, the enable port and the power supply port are respectively connected to the wake-up input port, and the output port is connected to the main control unit.

[0012] In the standby wake-up circuit provided in an embodiment of the present invention, the second power conversion module further includes a first voltage divider module, and the enable port is connected to the connection point between the wake-up input port and the power supply port through the first voltage divider module.

[0013] In the standby wake-up circuit provided in an embodiment of the present invention, the first voltage-dividing module includes a first voltage-dividing resistor, a second voltage-dividing resistor and a first filter capacitor, the enable port is connected to the connection point between the wake-up input port and the power supply port through the first voltage-dividing resistor, the second voltage-dividing resistor and the first filter capacitor are respectively connected to the connection point between the enable port and the first voltage-dividing resistor, and the second voltage-dividing resistor and the first filter capacitor are both grounded.

[0014] In the standby wake-up circuit provided in an embodiment of the present invention, the second power conversion module also includes an isolation transformer and a half-wave rectifier circuit, the output port is connected to the primary side of the isolation transformer, and the half-wave rectifier circuit is respectively connected to the main control unit and the secondary side of the isolation transformer.

[0015] In the standby wake-up circuit provided in an embodiment of the present invention, the wake-up control chip further includes a feedback port, and the second power conversion module further includes a feedback component, and the feedback port is connected to the primary side of the isolation transformer through the feedback component.

[0016] In the standby wake-up circuit provided in an embodiment of the present invention, the feedback component includes a first feedback capacitor, a first feedback resistor and a second feedback resistor, the feedback port is connected to the primary side of the isolation transformer through the first feedback resistor, the first feedback capacitor and the second feedback resistor are respectively connected to the connection point between the feedback port and the first feedback resistor, and the first feedback capacitor and the second feedback resistor are both grounded.

[0017] In the standby wake-up circuit provided in the embodiment of the present invention, the standby wake-up circuit further includes a voltage stabilizing module, and the first power conversion module and the second power conversion module are respectively connected to the main control unit through the voltage stabilizing module.

[0018] In the standby wake-up circuit provided in the embodiment of the present invention, a switch circuit is connected between the second power conversion module and the host computer.

[0019] In a second aspect, an embodiment of the present invention provides a control method for a standby wake-up circuit, which is applied to a host computer, and the host computer is connected to the second power conversion module in the standby wake-up circuit according to the embodiment of the first aspect, and the control method includes:

[0020] Outputting a wake-up voltage to the second power conversion module, so that the second power conversion module performs voltage conversion on the wake-up voltage and outputs the wake-up voltage after voltage conversion to the main control unit;

[0021] In response to the power-on completion signal of the main control unit, the output of the wake-up voltage to the second power conversion module is stopped.

[0022] According to the control method of the standby wake-up circuit provided by the embodiment of the present invention, there is at least the following beneficial effect: when the standby wake-up circuit is completely powered off, the host computer provides a wake-up voltage to the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, thereby waking up the main control unit. After the main control unit wakes up, the bridgeless PFC module can be controlled so that the main power is transmitted to the first power conversion module, and then the main power is supplied to the main control unit after the voltage conversion of the main power by the first power conversion module, so as to complete the power-on operation of the main control unit. When the main control unit completes the power-on, the host computer receives the power-on completion signal of the main control unit, and then stops outputting the wake-up voltage to the second power conversion module, and the second power conversion module stops supplying power to the main control unit, thereby avoiding wasting power. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit, so as to realize that the standby wake-up circuit has no power loss, and the power loss of the main control unit in the wake-up standby mode can be reduced.

[0023] In a third aspect, an embodiment of the present invention provides an operation control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method as described in the embodiment of the second aspect above.

[0024] According to the operation control device provided by the embodiment of the present invention, at least the following beneficial effects are achieved: when the standby wake-up circuit is completely powered off, the host computer provides a wake-up voltage to the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, thereby waking up the main control unit. After the main control unit wakes up, the bridgeless PFC module can be controlled to transmit the main power supply to the first power conversion module, and then the main power supply is powered on to the main control unit after the first power conversion module performs voltage conversion on the main power supply, thereby completing the power-on operation of the main control unit. When the main control unit is powered on, the operation control device receives the power-on completion signal of the main control unit, and then the output of the wake-up voltage to the second power conversion module can be stopped, and the second power conversion module stops supplying power to the main control unit to avoid wasting power. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit, so as to achieve no power loss in the standby wake-up circuit, and reduce the power loss of the main control unit in the wake-up standby mode.

[0025] In a fourth aspect, an embodiment of the present invention provides a circuit board, comprising the standby wake-up circuit as described in the embodiment of the first aspect above.

[0026] According to the circuit board provided by the embodiment of the present invention, at least the following beneficial effects are achieved: when the host computer needs to drive the main control unit, since the main control unit cannot control the bridgeless PFC module to work normally in the power-off state, the main power cannot pass through the bridgeless PFC module, and thus cannot wake up the main control unit. Therefore, a set of wiring harnesses can be used to connect the second power conversion module to the host computer, so that the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion of the second power conversion module, the converted wake-up voltage is output to the main control unit, thereby waking up the main control unit. Therefore, in the case where the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, so as to realize the wake-up control of the main control unit by the host computer. Compared with the method of using an additional auxiliary power supply circuit to supply power to the control chip separately in the related art, the standby wake-up circuit provided by the embodiment of the present invention can be completely powered off when the main control unit needs to be in the standby dormant state, and there is no need to maintain the auxiliary power supply circuit in the powered-on working state. The standby wake-up circuit has no power loss, and can reduce the power loss of the main control unit in the wake-up standby mode.

[0027] In a fifth aspect, an embodiment of the present invention provides an electronic device, comprising the standby wake-up circuit as described in the embodiment of the first aspect above or the circuit board provided in the embodiment of the fourth aspect above.

[0028] The electronic device provided by the embodiment of the present invention has at least the following beneficial effects: when the host computer needs to drive the main control unit, since the main control unit cannot control the bridgeless PFC module to work normally in the power-off state, the main power cannot pass through the bridgeless PFC module, and thus cannot wake up the main control unit. Therefore, a set of wiring harnesses can be used to connect the second power conversion module to the host computer, so that the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion of the second power conversion module, the converted wake-up voltage is output to the main control unit, thereby waking up the main control unit. Therefore, in the case where the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, so as to realize the wake-up control of the main control unit by the host computer. Compared with the method of using an additional auxiliary power supply circuit in the related art to supply power to the control chip separately, the standby wake-up circuit provided by the embodiment of the present invention can be completely powered off when the main control unit needs to be in the standby dormant state, and there is no need to maintain the auxiliary power supply circuit in the energized working state. The standby wake-up circuit has no power loss, and can reduce the power loss of the main control unit in the wake-up standby mode.

[0029] In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method described in the embodiment of the second aspect above.

[0030] According to the computer-readable storage medium provided by the embodiment of the present invention, at least the following beneficial effects are achieved: when the standby wake-up circuit is completely powered off, the host computer provides a wake-up voltage to the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, thereby waking up the main control unit. After the main control unit wakes up, the bridgeless PFC module can be controlled so that the main power is transmitted to the first power conversion module, and then the main power is supplied to the main control unit after the voltage conversion of the main power by the first power conversion module, thereby completing the power-on operation of the main control unit. When the main control unit is powered on, the host computer receives the power-on completion signal of the main control unit, and then stops outputting the wake-up voltage to the second power conversion module, and the second power conversion module stops supplying power to the main control unit, thereby avoiding wasting power. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit, thereby realizing that the standby wake-up circuit has no power loss, and can reduce the power loss of the main control unit in the wake-up standby mode.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0034] Figure 1 It is a structural schematic diagram of a three-phase bridgeless PFC circuit in the related art;

[0035] Figure 2 is a structural schematic diagram of a standby wake-up circuit provided by an embodiment of the present invention;

[0036] Figure 3 is a structural schematic diagram of a second power conversion module provided by an embodiment of the present invention;

[0037] Figure 4 is a structural schematic diagram of another standby wake-up circuit provided by an embodiment of the present invention;

[0038] Figure 5 is a flow chart of a control method of a standby wake-up circuit provided by an embodiment of the present invention;

[0039] Figure 6 It is a structural schematic diagram of an operation control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0041] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, "above", "below", "within", etc. are understood to include the number itself, "at least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If there is a description of the first and the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] It should be noted that the terms such as setting, installing, and connecting in the embodiments of the present invention should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the embodiments of the present invention in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium.

[0043] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] At present, for devices powered by an external power supply, such as a single-chip microcomputer, when the external power supply to the single-chip microcomputer is cut off and the single-chip microcomputer is turned off, if it is necessary to wake up the single-chip microcomputer again, an additional device is usually required to achieve it. For example, some devices use power switching devices to implement a bridgeless PFC circuit to power the control chip. Since the bridgeless PFC circuit must rely on the control chip to control the corresponding power switching devices to achieve current rectification processing, when the control chip is powered off and enters the standby mode, the power switching devices in the bridgeless PFC circuit cannot be controlled to power the control chip before the control chip is powered on, resulting in the bridgeless PFC circuit being unable to wake up the control chip, and then causing the bridgeless PFC circuit to fail to work properly. For example, Figure 1 In the three-phase bridgeless PFC circuit shown, a relay circuit and a rectifier circuit are sequentially arranged in the three-phase circuit, and the rectifier circuit includes six switch tubes and two capacitors. The six switch tubes are controlled by the control chip to perform switching actions and play the role of a rectifier bridge. The relay circuit is provided with two relays. When the relay is disconnected, the subsequent circuit is powered off. Therefore, when the three-phase bridgeless PFC circuit needs to enter the standby state to reduce power consumption, all the relays in the relay circuit are disconnected, so that the control chip is completely powered off. If the control chip needs to be awakened, even if all the relays in the relay are turned on, all the switch tubes in the rectifier circuit are still in the disconnected state, and the subsequent load and control chip still cannot be powered. Therefore, in the related art, an auxiliary power supply circuit needs to be additionally arranged for the bridgeless PFC circuit to supply power to the control chip separately, so that the control chip can control the switch tube in the rectifier circuit according to the instructions of the host computer, and realize the use of a three-phase power supply to supply power to the subsequent load and the control chip. After the three-phase bridgeless PFC circuit enters the standby state, all relays and all switch tubes are disconnected, and the three-phase bridgeless PFC circuit is completely powered off, but the auxiliary power supply circuit is still powered on to wake up the control chip at any time, so it is difficult to reduce the power consumption of the circuit. Therefore, how to achieve low power consumption to wake up the control chip in standby mode has become an urgent problem to be solved.

[0046] Based on this, the embodiment of the present invention provides a standby wake-up circuit, a control method, a device, a circuit board and an electronic device, and a set of wiring harnesses are used to connect the second power conversion module in the standby wake-up circuit to the host computer, so that when the main control unit needs to be awakened, after the host computer is powered on, the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion of the second power conversion module, the converted wake-up voltage is output to the main control unit, so that the main control unit can be awakened, and then the main control unit can control the bridgeless PFC module according to the instruction of the host computer, and then the main control unit can be powered by the main power supply. Therefore, in the case where the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, and the host computer can realize the wake-up control of the main control unit by the host computer. Compared with the method of using an additional auxiliary power supply circuit in the related art to supply power to the control chip separately, the standby wake-up circuit provided by the embodiment of the present invention can be completely powered off when the main control unit needs to be in a standby dormant state, and there is no need to maintain the auxiliary power supply circuit in a powered working state. The standby wake-up circuit has no power loss, which can reduce the power loss of the main control unit in the wake-up standby mode.

[0047] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0048] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of the structure of the standby wake-up circuit 100 provided in an embodiment of the present invention. It can be understood that the standby wake-up circuit 100 includes a bridgeless PFC module 120, a main control unit 110, a first power conversion module 130 and a second power conversion module 140. The bridgeless PFC module 120 includes a PFC rectifier circuit that uses a switch tube to partially or completely replace a rectifier bridge or a rectifier diode, for example, Figure 2 As shown, the bridgeless PFC module 120 includes six switches and two rectifier capacitors, specifically switch tube Q1, switch tube Q2, switch tube Q3, switch tube Q4, switch tube Q5, switch tube Q6, rectifier capacitor C1 and rectifier capacitor C2, wherein all the switches in the bridgeless PFC module 120 are connected to the main control unit 110, so that the main control unit 110 can switch all the switches in the bridgeless PFC module 120 according to the instructions of the host computer, thereby realizing the control of the bridgeless PFC module 120. And the main power supply (such as Figure 2The three-phase power supply shown in the figure) is output to the first power conversion module 130 after passing through the bridgeless PFC module 120 in which the relay circuit is in working state. The first power conversion module 130 steps down the voltage output by the bridgeless PFC module 120, and then provides the stepped-down voltage to the main control unit 110, so that the main control unit 110 can be powered on by the main power supply. The relay circuit may include a first relay SW1 and a second relay SW2, and the first relay SW1 and the second relay SW2 are respectively connected to the main control unit 110, and the main control unit 110 may control the switch states of the first relay SW1 and the second relay SW2. The second power conversion module 140 includes a wake-up input port IN and a wake-up output port OUT. The wake-up input port IN can be connected to the host computer by using a set of wiring harnesses, so that the wake-up input port IN can receive the wake-up voltage of the host computer, and the wake-up output port OUT is connected to the main control unit 110. Therefore, when the standby wake-up circuit 100 is completely powered off and the host computer needs to wake up the standby wake-up circuit 100, the host computer can send the wake-up voltage through the wake-up input port IN, so that the second power conversion module 140 can convert the wake-up voltage of the host computer and output the converted wake-up voltage to the main control unit 110 through the wake-up output port OUT. Therefore, the main control unit 110 is powered on and awakened, and then the main control unit 110 can control the bridgeless PFC module 120 according to the instructions of the host computer, so that the main power can be supplied to the main control unit 110 through the bridgeless PFC module 120 and the first power conversion module 130 in sequence, completing the power-on operation of the main control unit 110. When the main control unit 110 needs to be in standby dormancy, the bridgeless PFC module 120 can be controlled to be turned off, the power supply line from the main power supply to the main control unit 110 can be cut off, and the power-off operation of the main control unit 110 can be realized. When the wake-up voltage of the host computer is received, the second power conversion module 140 can be used to convert the voltage to power the main control unit 110, and the main control unit 110 in the standby dormancy state can be awakened. Therefore, when the standby wake-up circuit 100 is completely powered off, the main control unit 110 can be directly awakened by the wake-up voltage provided by the host computer, and the host computer can realize the wake-up control of the main control unit 110. Compared with the related art that adopts an additional auxiliary power supply circuit to supply power to the control chip separately, the standby wake-up circuit 100 provided in the embodiment of the present invention can be completely powered off when the main control unit 110 needs to be in the standby dormancy state, and there is no need to maintain the auxiliary power supply circuit in the powered-on working state. The standby wake-up circuit 100 has no power loss, which can reduce the power loss of the main control unit 110 in the wake-up standby mode.

[0049] It should be noted that the first power conversion module 130 can be an isolated power conversion module or a non-isolated power conversion module, and the second power conversion module 140 is an isolated power conversion module.

[0050] It should be noted that the bridgeless PFC module 120 may include: Figure 2 The PWM bridgeless PFC circuit is shown, and the bridgeless PFC module 120 may also include a totem pole bridgeless PFC circuit or a single-phase bridgeless PFC circuit.

[0051] It should be noted that the standby wake-up circuit 100 can be applied to the slave side of the master-slave system, such as the outdoor unit in the air-conditioning system. Since the indoor unit in the air-conditioning system can always remain powered on, and the outdoor unit in the air-conditioning system can be powered off and enter the standby sleep mode when the air-conditioning system is shut down, when the air-conditioning system needs to be operated, the indoor unit can wake up the main control unit 110 in the outdoor unit through the standby wake-up circuit 100, thereby enabling the outdoor unit to be powered on and operated.

[0052] Reference Figure 3 , Figure 3The schematic diagram of the structure of the second power conversion module 140 provided by the embodiment of the present invention is shown. It can be understood that the second power conversion module 140 includes a wake-up control chip 141, and the wake-up control chip 141 has an enable port EN for controlling the switch of the wake-up control chip 141, a power supply port VIN for powering the wake-up control chip 141, and an output port SW for outputting power to the wake-up control chip 141, wherein the enable port EN and the power supply port VIN are respectively connected to the wake-up input port IN, so that when the wake-up input port IN receives the wake-up voltage of the host computer, the power supply port VIN can obtain the wake-up voltage, and the wake-up voltage can power the wake-up control chip 141, and at the same time, because the voltage value of the wake-up voltage is higher than the enable voltage preset by the enable port EN, the wake-up control chip 141 starts to run, so that the wake-up control chip 141 can perform voltage conversion processing on the wake-up voltage, and output the converted wake-up voltage through the output port SW. It should be noted that the enable port EN and the power supply port VIN can be directly connected, that is, the enable port EN is connected to the connection point of the power supply port VIN and the wake-up input port IN. Since the output port SW is connected to the main control unit 110, the wake-up control chip 141 can step down the wake-up voltage, provide the required voltage to the main control unit 110, and provide power to the main control unit 110 to wake up the main control unit 110. Therefore, when the standby wake-up circuit 100 is completely powered off, the host computer provides the second power conversion module 140 of the standby wake-up circuit 100 with a wake-up voltage, that is, the main control unit 110 can be directly awakened, without maintaining the auxiliary power supply circuit in a running state, so as to realize the wake-up control of the main control unit 110 by the host computer. At the same time, the standby wake-up circuit 100 has no power consumption in the standby dormant state. Compared with the method in the related art that the auxiliary power supply circuit is always in a running state to realize the awakening of the main control unit 110, the power loss of the circuit in the standby dormant state can be reduced.

[0053] It should be noted that the wake-up control chip 141 also includes a bootstrap port BST, which is connected to the output port SW through a bootstrap capacitor C3. A power regulator is also provided inside the wake-up control chip 141. The power regulator charges the bootstrap capacitor C3 through the bootstrap port BST, so that the bootstrap capacitor C3 forms a floating power supply, thereby assisting the normal operation of the wake-up control chip 141 (such as providing driving energy for the switch tube inside the wake-up control chip 141), so that the output port SW can output the required voltage. It can be understood that the second power conversion module 140 also includes a first voltage divider module 142. When the voltage value of the level signal received by the enable port EN is higher than the preset enable voltage, the wake-up control chip 141 can be driven to operate. Compared with the power supply voltage for the wake-up control chip 141, the voltage value of the enable voltage is smaller. Therefore, the enable port EN can be connected to the connection point between the wake-up input port IN and the power supply port VIN through the first voltage divider module 142, so that the first voltage divider module 142 can share part of the voltage for the enable port EN, reduce the voltage at the enable port EN, help the enable port EN to accurately identify and process the input level signal, and at the same time improve the adaptability of the circuit to the host computer.

[0054] It can be understood that the first voltage divider module 142 includes a first voltage divider resistor R1, a second voltage divider resistor R2 and a first filter capacitor C2, wherein the enable port EN is connected to the connection point between the wake-up input port IN and the power supply port VIN through the first voltage divider resistor R1, one end of the second voltage divider resistor R2 is connected to the connection point between the first voltage divider resistor R1 and the enable port EN, and the other end is grounded. In addition, the first filter capacitor C2 is connected in parallel with the second voltage divider resistor R2. Therefore, the first voltage divider resistor R1 and the second voltage divider resistor R2 cooperate with each other to reduce the voltage value at the enable port EN, and the first filter capacitor C2 can filter the wake-up voltage, which helps to provide a stable enable signal for the enable port EN, thereby improving the stability of the wake-up control chip 141. It should be noted that a filter capacitor is also connected between the wake-up input port IN and the power supply port VIN, one end of the filter capacitor is connected to the connection point between the wake-up input port IN and the power supply port VIN, and the other end is grounded, so as to provide a stable voltage signal for the power supply port VIN and the enable port EN.

[0055] It can be understood that the second power conversion module also includes an isolation transformer T1 and a half-wave rectifier circuit 143, wherein the primary side of the isolation transformer T1 is connected to the output port SW of the wake-up control chip 141, and the secondary side of the isolation transformer T1 is connected to the main control unit 110 through the half-wave rectifier circuit 143. Therefore, after the wake-up voltage is processed by the voltage conversion of the wake-up control chip 141, the converted voltage is output to the isolation transformer T1, and the voltage is converted by the isolation transformer T1. Secondary voltage conversion is performed on the voltage, and then the half-wave rectifier circuit 143 can process the voltage signal again to provide a stable voltage for the main control unit 110 to wake up.

[0056] It should be noted that the half-wave rectified current 143 includes a diode D1 and a half-wave rectifier capacitor C5, the positive electrode of the diode D1 is connected to the secondary side of the isolation transformer T1, the negative electrode of the diode D1 is connected to the output port OUT and one end of the half-wave rectifier capacitor C5 respectively, and the other end of the half-wave rectifier capacitor C5 is grounded.

[0057] It can be understood that the second power conversion module 140 also includes a feedback component 144, and the wake-up control chip 141 also includes a feedback port FB, and the feedback port FB is connected to the primary side of the isolation transformer T1 through the feedback component 144, so that the wake-up control chip 141 can obtain a voltage feedback signal through the feedback component 144, and then perform voltage conversion on the wake-up voltage, adjust the voltage value output by the output port SW, and provide a more accurate voltage for the primary side of the isolation transformer T1, thereby helping to provide a suitable voltage for the main control unit 110.

[0058] It can be understood that the feedback component 144 includes a first feedback capacitor, a first feedback resistor R3 and a second feedback resistor R4, the feedback port FB is grounded through the first feedback capacitor, and the second feedback resistor R4 is connected in parallel with the first feedback capacitor. In addition, one end of the first feedback resistor R3 is connected to the connection point between the first feedback capacitor and the feedback port FB, and the other end is connected to the primary side of the isolation transformer. Therefore, the wake-up control chip 141 can use the voltage division and filtering processing of the feedback component 144 to receive the feedback voltage, and then use the feedback voltage to adjust the voltage output by the output port SW to provide a suitable voltage for the main control unit 110 to wake up.

[0059] like Figure 4As shown, it can be understood that the standby wake-up circuit 100 also includes a voltage stabilizing module 150, such as a low dropout regulator (LDO). In order to provide a stable power supply voltage to the main control unit 110, the first power conversion module 130 and the second power conversion module 140 are both connected to the input end of the voltage stabilizing module 150, and the output port of the voltage stabilizing module 150 is connected to the main control unit 110. Therefore, when the main power supply is used to power the main control unit 110, the main power supply is sequentially processed by the bridgeless PFC module 120 and the first power conversion module 130, and then enters the voltage stabilizing module 150 for voltage stabilization, and then provides the voltage after voltage stabilization to the main control unit 110. Correspondingly, when the main control unit 110 is awakened by the wake-up voltage of the host computer, the wake-up voltage enters the voltage stabilizing module 150 after the voltage conversion of the second power conversion module 140, so that the voltage stabilizing module 150 can be used to provide a stable voltage to the main control unit 110 to wake up the main control unit 110.

[0060] It can be understood that a switching circuit, such as a relay, is also provided between the wake-up input port IN and the host computer. The host computer can control the switching circuit. When the switching circuit is turned on, the host computer can transmit a wake-up voltage to the wake-up input port IN, i.e., the second power conversion module, thereby waking up the main control unit 110; when the switching circuit is disconnected, the host computer cannot transmit a wake-up voltage to the wake-up input port IN, i.e., the second power conversion module, so that the second power conversion module 140 cannot provide voltage to the main control unit 110. If the main power supply is disconnected at the same time and power supply to the main control unit 110 is stopped, the main control unit 110 loses power and enters the standby sleep mode. At the same time, the standby wake-up circuit 100 is powered off as a whole, so there is no power loss.

[0061] It can be understood by those skilled in the art that Figure 2 or Figure 3 The structure of the standby wake-up circuit 100 shown in the figure does not constitute a limitation on the embodiment of the present invention, and may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0062] Based on the structure of the standby wake-up circuit 100 described above, various embodiments of a control method of the standby wake-up circuit 100 according to the second aspect of the present invention are proposed.

[0063] Reference Figure 5 , Figure 5 is a flow chart of a control method of a standby wake-up circuit 100 provided in an embodiment of the present invention. The control method can be applied to a host computer, and the host computer can control Figure 2 or Figure 3 or Figure 4 The standby wake-up circuit 100 shown in the figure, the control method includes but is not limited to the following steps:

[0064] Step S510: outputting a wake-up voltage to the second power conversion module, so that the second power conversion module performs voltage conversion on the wake-up voltage and outputs the wake-up voltage after voltage conversion to the main control unit;

[0065] Step S520: In response to the power-on completion signal of the main control unit, stop outputting the wake-up voltage to the second power conversion module.

[0066] It is understandable that when the standby wake-up circuit is completely powered off, that is, the main control unit is in a standby dormant state, the main control unit cannot control the bridgeless PFC module in the standby wake-up circuit, and therefore, the main power supply cannot supply power to the main control unit through the bridgeless PFC module. The second power conversion module in the standby wake-up circuit is connected to the host computer. When the host computer needs to wake up the main control unit in the standby wake-up circuit, the host computer can transmit the wake-up voltage to the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, so that the main control unit is powered on and awakened. After being awakened, the main control unit can control the bridgeless PFC module, so that the main power supply can be transmitted to the first power conversion module through the bridgeless PFC module. After the voltage conversion of the first power conversion module, the main control unit is powered by the main power supply, and the power-on operation of the main control unit is completed. At this time, the host computer still outputs the wake-up voltage to the second power conversion module. In order to save power, when the host computer can receive the power-on completion signal of the main control unit, it can be considered that the main control unit has completed power-on, and the host computer can stop transmitting the wake-up voltage to the second power conversion module, so that the second power conversion module stops supplying power to the main control unit. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit to realize the host computer's wake-up control of the main control unit. At the same time, since the standby wake-up circuit is completely powered off in the standby sleep mode, the circuit has no power loss, which can reduce the power loss when waking up the main control unit in the standby mode.

[0067] Thirdly, refer to Figure 6 The embodiment of the present invention provides an operation control device 600, including a memory 620, a processor 610, and a computer program stored in the memory 620 and executable on the processor 610. The processor 610 executes the program to implement the control method of the second aspect of the embodiment, for example, Figure 5 Method steps S510 to S520 in.

[0068] According to the operation control device provided by the embodiment of the present invention, when the standby wake-up circuit is completely powered off, the host computer can provide a wake-up voltage for the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, thereby waking up the main control unit. After the main control unit wakes up, the bridgeless PFC module can be controlled so that the main power is transmitted to the first power conversion module through the bridgeless PFC module, and then the main power is supplied to the main control unit after the voltage conversion of the main power by the first power conversion module, completing the power-on operation of the main control unit. When the main control unit is powered on, the operation control device receives the power-on completion signal of the main control unit, and then the output of the wake-up voltage to the second power conversion module can be stopped, and the second power conversion module stops supplying power to the main control unit to avoid wasting power. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit, so as to achieve no power loss in the standby wake-up circuit, and reduce the power loss of the main control unit in the wake-up standby mode.

[0069] In a fourth aspect, an embodiment of the present invention provides a circuit board, which includes a standby wake-up circuit as described in the first aspect of the embodiment above. The circuit board is provided with a bridgeless PFC module, a main control unit, a first power conversion module and a second power conversion module, and a set of wiring harnesses are used to connect the second power conversion module in the standby wake-up circuit to the host computer, so that when the main control unit needs to be awakened, after the host computer is powered on, the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion by the second power conversion module, the converted wake-up voltage is output to the main control unit, so that the main control unit can be awakened, and then the main control unit can control the bridgeless PFC module according to the instruction of the host computer, and then the main power supply can be used to power the main control unit. Therefore, when the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, thereby realizing the wake-up control of the main control unit by the host computer. Compared with the related art of additionally setting up an auxiliary power supply circuit to supply power to the control chip separately, the circuit board provided in the embodiment of the present invention can completely power off the standby wake-up circuit when the main control unit needs to be in standby dormant state, and there is no need to maintain the auxiliary power supply circuit in a powered working state. The standby wake-up circuit has no power consumption, thereby reducing the power loss of the main control unit in the wake-up standby mode.

[0070] In a fifth aspect, an embodiment of the present invention provides an electronic device, which includes a standby wake-up circuit as provided in the embodiment of the first aspect above or a circuit board as provided in the embodiment of the fourth aspect above. The electronic device is provided with a bridgeless PFC module, a main control unit, a first power conversion module and a second power conversion module, and a set of wiring harnesses are used to connect the second power conversion module in the standby wake-up circuit to the host computer, so that when the main control unit needs to be awakened, after the host computer is powered on, the second power conversion module can receive the wake-up voltage of the host computer, and after the voltage conversion of the second power conversion module, the converted wake-up voltage is output to the main control unit, so that the main control unit can be awakened, and then the main control unit can control the bridgeless PFC module according to the instruction of the host computer, and then the main power supply can be used to power the main control unit. Therefore, when the standby wake-up circuit is completely powered off, the main control unit can be directly awakened by the wake-up voltage provided by the host computer, thereby realizing the wake-up control of the main control unit by the host computer. Compared with the related art of additionally setting up an auxiliary power supply circuit to supply power to the control chip separately, the electronic device provided by the embodiment of the present invention can completely power off the standby wake-up circuit when the main control unit needs to be in standby dormant state, and there is no need to maintain the auxiliary power supply circuit in a powered working state. The standby wake-up circuit has no power consumption, thereby reducing the power loss of the main control unit in the wake-up standby mode.

[0071] In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method of the standby wake-up circuit in the embodiment of the second aspect above, for example, to execute Figure 5 Method steps S510 to S520 in.

[0072] According to the computer-readable storage medium provided by the embodiment of the present invention, when the standby wake-up circuit is completely powered off, the host computer can provide a wake-up voltage for the second power conversion module, so that the second power conversion module can convert the wake-up voltage and output the converted wake-up voltage to the main control unit, thereby waking up the main control unit. After the main control unit wakes up, the bridgeless PFC module can be controlled so that the main power is transmitted to the first power conversion module through the bridgeless PFC module, and then the main power is supplied to the main control unit after the voltage conversion of the main power is performed by the first power conversion module, and the power-on operation of the main control unit is completed. When the main control unit is powered on, the host computer receives the power-on completion signal of the main control unit, and then the output of the wake-up voltage to the second power conversion module can be stopped, and the second power conversion module stops supplying power to the main control unit to avoid wasting power. Therefore, when the standby wake-up circuit is completely powered off, there is no need to maintain the auxiliary power circuit in a powered-on working state. The host computer can use the second power conversion module to directly wake up the main control unit, so as to realize that the standby wake-up circuit has no power loss, and the power loss of the main control unit in the wake-up standby mode can be reduced.

[0073] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed methods above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium or a non-transitory medium and a communication medium or a temporary medium. As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0074] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A standby wake-up circuit, characterized in that: include: Bridgeless PFC module for access to the main power supply; A main control unit connected to the bridgeless PFC module, the main control unit being used to control the bridgeless PFC module; A first power conversion module, connected to the bridgeless PFC module and the main control unit respectively, the first power conversion module is used to convert the voltage output by the bridgeless PFC module and supply power to the main control unit; A second power conversion module is connected to the main control unit. The second power conversion module is used to receive a wake-up voltage from a host computer, and convert the wake-up voltage and output it to the main control unit to wake up the main control unit, so that the main control unit controls the bridgeless PFC module to power on the main control unit using the main power supply.

2. The standby wake-up circuit according to claim 1, characterized in that: The second power conversion module includes a wake-up input port for connecting to the host computer, and a wake-up control chip for controlling the wake-up of the main control unit. The wake-up control chip includes an enable port, a power supply port and an output port. The enable port and the power supply port are respectively connected to the wake-up input port, and the output port is connected to the main control unit.

3. The standby wake-up circuit according to claim 2, characterized in that: The second power conversion module further includes a first voltage dividing module, and the enable port is connected to a connection point between the wake-up input port and the power supply port through the first voltage dividing module.

4. The standby wake-up circuit according to claim 3, characterized in that: The first voltage-dividing module includes a first voltage-dividing resistor, a second voltage-dividing resistor and a first filter capacitor. The enable port is connected to the connection point between the wake-up input port and the power supply port through the first voltage-dividing resistor. The second voltage-dividing resistor and the first filter capacitor are respectively connected to the connection point between the enable port and the first voltage-dividing resistor, and the second voltage-dividing resistor and the first filter capacitor are both grounded.

5. The standby wake-up circuit according to claim 2, characterized in that: The second power conversion module includes an isolation transformer and a half-wave rectifier circuit, the output port is connected to the primary side of the isolation transformer, and the half-wave rectifier circuit is respectively connected to the main control unit and the secondary side of the isolation transformer.

6. The standby wake-up circuit according to claim 5, characterized in that: The wake-up control chip further includes a feedback port, and the second power conversion module further includes a feedback component, and the feedback port is connected to the primary side of the isolation transformer through the feedback component.

7. The standby wake-up circuit according to claim 6, characterized in that: The feedback component includes a first feedback capacitor, a first feedback resistor and a second feedback resistor. The feedback port is connected to the primary side of the isolation transformer through the first feedback resistor. The first feedback capacitor and the second feedback resistor are respectively connected to the connection point between the feedback port and the first feedback resistor, and the first feedback capacitor and the second feedback resistor are both grounded.

8. The standby wake-up circuit according to claim 1, characterized in that: The standby wake-up circuit also includes a voltage stabilizing module, and the first power conversion module and the second power conversion module are respectively connected to the main control unit through the voltage stabilizing module.

9. The standby wake-up circuit according to claim 1, characterized in that: A switch circuit is connected between the second power conversion module and the host computer.

10. A control method for a standby wake-up circuit, characterized in that: Applied to a host computer, wherein the host computer is connected to the second power conversion module in the standby wake-up circuit according to any one of claims 1 to 9, and the control method includes: Outputting a wake-up voltage to the second power conversion module, so that the second power conversion module performs voltage conversion on the wake-up voltage and outputs the wake-up voltage after voltage conversion to the main control unit; In response to the power-on completion signal of the main control unit, the output of the wake-up voltage to the second power conversion module is stopped.

11. An operation control device, characterized in that: The system comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method according to claim 10.

12. A circuit board, characterized in that: The invention comprises the standby wake-up circuit as claimed in any one of claims 1 to 9.

13. An electronic device, characterized in that: A standby wake-up circuit comprising any one of claims 1 to 9 or a circuit board comprising claim 12.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the control method according to claim 10.

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