Combiner control circuit and control method, device, medium and product thereof

Abstract

The present application discloses a combining control circuit and its control method, device, medium and product, which relate to the technical field of boost circuits, and include a state detection module and a switch module. The state detection module detects the voltage operating state of each boost branch respectively, and outputs a switch signal based on the operating state of all boost branches. The switch module receives the switch signal and disconnects or connects the output end of each boost branch with the power output end. Based on the operating state of all boost branches, the output end of each boost branch can be disconnected or connected with the power output end to prevent the voltage of the power input end from being output to the power output end when all boost branches are in an abnormal operating state or not started, thereby preventing the power output end from being truly shut down, causing the output voltage to be lower than the requirement, resulting in damage to the subsequent circuit. Thus, the output power is truly shut down and the subsequent circuit is protected.

Description

Technical Field

[0001] The present application relates to the technical field of boost circuits, and in particular to a combining control circuit and a control method, device, medium, and product thereof. Background Art

[0002] In many systems requiring high power reliability, such as servers and communications equipment, ORing circuits (commonly used to prevent power backflow and typically comprised of diodes and MOSFETs) are often used to implement dual or multiple power supply redundancy. These circuits can connect multiple power inputs. If one power supply fails or experiences voltage anomalies, the ORing circuit automatically switches the load to another functioning power supply, ensuring a continuous and stable power supply and preventing equipment downtime due to a single power failure.

[0003] In a boost-based ORing circuit, when all boost circuits stop working or experience an abnormality, the combined output voltage VOUT still has residual voltage, preventing it from truly shutting down. Because this voltage is lower than the normal operating voltage of the boost circuit, it may damage subsequent circuits and significantly reduce power supply reliability. Summary of the Invention

[0004] The present application provides a combining control circuit and its control method, device, medium and product, in order to at least solve the problem in the related art that the boost circuit cannot be truly shut down, which may cause damage to the subsequent circuit.

[0005] The present application provides a combining control circuit, which is connected to multiple boost branches and includes:

[0006] A state detection module, wherein the input end of the state detection module is connected to each boost branch respectively, and is used to collect operating information of each boost branch, and determine the working state of all boost branches based on the operating information, and output a switching signal based on the working state of all boost branches;

[0007] The switch module is connected to the status detection module and is arranged between the output end of each boost branch and the power output end. It is used to receive a control signal and disconnect or establish the connection between the output end of the boost branch and the power output end based on the control signal.

[0008] The present application also provides a control method for a combiner control circuit, which is applied to the above combiner control circuit, including:

[0009] Collecting the operating information of each boost branch and judging the working status of all boost branches based on the operating information;

[0010] The connection between the output end of the boost branch and the output end of the power supply is disconnected or connected based on the working status of all the boost branches.

[0011] The present application also provides an electronic device, comprising: a memory for storing a computer program; and a processor for implementing the steps of any of the above-mentioned control methods for a combining control circuit when executing the computer program.

[0012] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned control methods for a combiner control circuit are implemented.

[0013] The present application also provides a computer program product, including a computer program, which implements the steps of any of the above-mentioned control methods for a combiner control circuit when executed by a processor.

[0014] Through the present application, the state detection module detects the voltage working state of each boost branch respectively, and outputs a switch signal based on the working state of all boost branches. The switch module receives the switch signal and disconnects or connects the output end of each boost branch with the power output end. Based on the working state of all boost branches, the output end of each boost branch can be disconnected or connected with the power output end to prevent the voltage of the power input end from being output to the power output end when all boost branches are in an abnormal working state, or when all boost branches are not started, or when part of the boost branches are in an abnormal working state and the other part of the boost branches are not started. Thus, the power output end is not truly turned off, resulting in the voltage of the power input end being directly transmitted to the subsequent circuit without being boosted, causing the output voltage to be lower than the demand, resulting in damage to the subsequent circuit. At the same time, when all boost branches are turned off and not working, the voltage of the input end is still transmitted to the power output end. Thus, the output power is truly turned off and the subsequent circuit is protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 For the related boost circuit;

[0017] Figure 2 A structural diagram of a combining control circuit provided in an embodiment of the present application;

[0018] Figure 3A structural diagram of another combining control circuit provided in an embodiment of the present application;

[0019] Figure 4 A structural diagram of a state detection module in a combining control circuit provided in an embodiment of the present application;

[0020] Figure 5 A structural diagram of another combining control circuit provided in an embodiment of the present application;

[0021] Figure 6 Schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] It should be noted that, in the description of this application, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. The terms "first," "second," etc., in this application are used to distinguish similar objects, and are not used to describe a particular order or sequence.

[0024] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] In many systems requiring high power reliability, such as servers and communications equipment, ORing circuits (commonly used to prevent power backflow and typically comprised of diodes and MOSFETs) are often used to implement dual or multiple power supply redundancy. These circuits can connect multiple power inputs. If one power supply fails or experiences voltage anomalies, the ORing circuit automatically switches the load to another functioning power supply, ensuring a continuous and stable power supply and preventing equipment downtime due to a single power failure.

[0026] For the boost-based ORing circuit, when all boost circuits stop working or have an abnormality, the output voltage VOUT after the combined circuit still has residual voltage and cannot be truly shut down. The reason is that the boost circuit topology has a freewheeling diode, such as Figure 1As shown, when the first boost controller stops operating, the voltage Vboost1 does not drop to 0V. Due to the action of D1, Vboost1 equals the input voltage VIN1 (ignoring the diode voltage drop). Similarly, when the second boost controller stops operating, the voltage Vboost2 equals the input voltage VIN2 (ignoring the diode voltage drop). When both boost circuits stop operating due to enable shutdown or an abnormal condition, VOUT still draws power from the higher of VIN1 and VIN2, preventing it from being truly shut down. Moreover, since its voltage is lower than the normal operating voltage of the boost circuit, it may damage subsequent circuits, significantly reducing power supply reliability.

[0027] Furthermore, when there are more than two boost branches, even after the boost branches are disabled or stop working due to an abnormality, VOUT can still draw power from the higher of the power input terminals of the multiple boost branches, preventing true shutdown. Furthermore, since its voltage is lower than the normal operating voltage of the boost circuit, it may damage subsequent circuits. Furthermore, when there is only one boost branch, even after the boost branch is disabled or stops working due to an abnormality, VOUT can still draw power from the power input terminal of the boost branch, preventing true shutdown. Furthermore, since its voltage is lower than the normal operating voltage of the boost circuit, it may damage subsequent circuits.

[0028] If the input power supply voltage is lower than the voltage required by the load, functional abnormalities and performance degradation may occur, including logical errors. For example, digital circuits (such as CPUs and memory) may not be able to recognize signal levels due to insufficient power supply, resulting in a freeze, reset, or data loss. This also includes insufficient driving capability. For example, analog circuits (such as op amps and sensors) may experience reduced output amplitude, a deterioration in signal-to-noise ratio, and reduced accuracy. For another example, insufficient reference voltage for an ADC can cause distorted sample values. This also includes power device failure. For example, loads such as motors and LEDs may experience insufficient torque, reduced brightness, or even failure to start due to undervoltage (such as a motor stalling and burning the windings).

[0029] There are also potential risks of hardware damage, including overcurrent and heating. Because the switching power supply may continuously increase its duty cycle to compensate for the output voltage, this can cause overcurrent and heating in the MOSFET / inductor. Furthermore, when the linear regulator voltage drop is too large, efficiency drops sharply, leading to thermal runaway. This also includes battery overdischarge. Deep discharge of lithium batteries under low voltage can accelerate electrode aging and even cause copper dendrite shorts (in this case, the risk level is high). Reverse current also occurs. In some DC-DC circuits, current can flow backward when the input voltage suddenly drops, damaging the input source (such as reverse power from a solar panel).

[0030] System-level risks can also arise, including malfunctioning protection circuits. For example, undervoltage lockout (UVLO) can be repeatedly triggered, causing frequent device restarts and impacting circuit reliability. This can also include cascading failures. For example, a voltage drop at a node in the grid could cause downstream equipment to collectively disconnect (e.g., a large-scale offline photovoltaic inverter). Furthermore, safety redundancy can be lost. For example, emergency systems (such as fire alarms) may fail to activate during an undervoltage condition, violating safety standards.

[0031] In order to solve the above problems, the embodiment of the present application provides a combining control circuit, such as Figure 2 As shown, the combining control circuit is connected to multiple boost branches, including:

[0032] A state detection module 10, wherein the input end of the state detection module 10 is connected to each boost branch, and is used to collect operating information of each boost branch, and determine the working state of all boost branches based on the operating information, and output a switching signal based on the working state of all boost branches;

[0033] The switch module 20 is connected to the status detection module 10 and is arranged between the output end of each boost branch and the power output end VOUT, and is used to receive a switching signal and disconnect or establish the connection between the output end of the boost branch and the power output end VOUT based on the switching signal.

[0034] Optionally, the working state of all the boost branches includes: all the boost branches are in an abnormal working state and any one of the boost branches is in a normal working state. The switch signal includes: an off signal and a on signal.

[0035] Specifically, refer to Figure 2 The multiple boost branches are K1 to KN, and the power input terminals are VIN1 to VINN. Each boost branch receives the input voltage and, under the control of the boost controller, boosts the voltage for output. The voltages output by each boost branch are combined into a combined voltage VOUT_R. Optionally, the operating state includes normal operating state and abnormal operating state. Operation information includes startup information and boost information of the boost branch. Abnormal operation includes abnormal operating state or inactive operating state.

[0036] It is worth noting that the boost branch includes an inductor, a diode, an anti-backflow switch tube, a boost controller and an anti-backflow control circuit. Figure 2 , the inductors are L1 to LN, the diodes are D1 to DN, and the anti-backflow switch tubes are Q1 to QN.

[0037] Specifically, the switch module 20 is connected to the output end of each boost branch, respectively, for receiving the combined voltage VOUT_R. Optionally, the switch module 20 may be a switch device, for receiving a switch signal and switching on or off.

[0038] The combining control circuit provided by the present invention detects the voltage operating state of each boost branch through the state detection module 10, and outputs a switching signal based on the operating state of all the boost branches. The switching module 20 receives the switching signal and disconnects or connects the output end of each boost branch from the power output end VOUT. Compared with the traditional boost circuit, the present application can disconnect or connect the output end of each boost branch from the power output end VOUT based on the operating state of all the boost branches, so as to prevent the voltage at the power input end from being output to the power output end VOUT when all the boost branches are in an abnormal operating state, or when all the boost branches are not started, or when some of the boost branches are in an abnormal operating state and the other part of the boost branches are not started. As a result, the power output end VOUT is not truly turned off, resulting in the voltage at the power input end being directly transmitted to the subsequent circuit without being boosted, causing the output voltage to be lower than the requirement, resulting in damage to the subsequent circuit. At the same time, when all the boost branches are turned off and not working, the voltage at the input end is still transmitted to the power output end. Thereby, the output power supply is truly shut down and the subsequent circuit is protected, which greatly improves the reliability of power supply.

[0039] It is worth noting that the combining control circuit provided in this embodiment is not only applicable to Figure 1 The boost circuit in the related art shown can be applied to any boost circuit. The boost circuit may include multiple boost branches, such as two or three boost branches, or may include a single boost branch. If the boost circuit only includes multiple boost branches, after the boost controller is shut down, the voltage at the power input is still transmitted to the load, or, during abnormal operation, the voltage at the input is still transmitted to the power output via the power output to the downstream load. In this case, the state detection module 10 and the switch module 20 disconnect the output of the boost branch from the power output when all multiple boost branches are malfunctioning. If the boost circuit only includes one boost branch, after the boost controller is shut down, the voltage at the power input is still transmitted to the load, or, during abnormal operation, the voltage at the input is still transmitted to the power output via the power output to the downstream load. In this case, the state detection module 10 and the switch module 20 disconnect the output of the boost branch from the power output when the boost branch is not operating.

[0040] like Figure 1The boost circuit in the related art shown may also include an anti-backflow control circuit to prevent the voltage at the power output end or the voltage of other boost branches from backflowing to the input end, causing power failure.

[0041] In some feasible implementations, the state detection module 10 is configured to output a shutdown signal when it is detected that all boost branches are in abnormal operation;

[0042] The switch module 20 is used to receive a shutdown signal and disconnect the output end of each boost branch from the output end VOUT of the power supply.

[0043] Specifically, the status detection module 10 is used to detect the working status of each boost branch. When it is detected that all boost branches are in abnormal operation, it outputs a shutdown signal so that the switch module 20 disconnects the output end of each boost branch from the VOUT connection of the power supply output end.

[0044] In addition, when the state detection module 10 detects that any boost branch is in a normal working state, it outputs a closing signal. After receiving the closing signal, the switch module 20 connects the output end of each boost branch with the power output end VOUT.

[0045] It should be noted that when all the boost branches are in an abnormal working state, or when all the boost branches are not started, or when some of the boost branches are in an abnormal working state and the other part of the boost branches are not started, the combined voltage VOUT_R will take the maximum one among the multiple power input terminals, that is, the combined voltage VOUT_R is the maximum one among the power input terminals minus the voltage drop of the diode D1, which is equivalent to all the boost branches not working, and the combined voltage VOUT_R still has residual voltage.

[0046] In some possible implementations, such as Figure 3 As shown, the status detection module 10 includes:

[0047] Multiple branch state judgment units 11, each branch state judgment unit 11 is connected to the working state end of each boost branch, and is used to judge whether each boost branch is in an abnormal working state and output the judgment result;

[0048] The detection unit 12 has its input end connected to the output end of multiple branch status judgment units respectively, for receiving the judgment result and detecting whether all the boost branches are in an abnormal working state. When it is detected that all the boost branches are in an abnormal working state, a shutdown signal is output.

[0049] Specifically, each branch state determination unit 11 receives the operating state of each boost branch, determines whether the boost branch is in an abnormal operating state based on the operating state, and transmits the determination result to the detection unit 12. Optionally, each of the branch state determination units 11 may be a logic determination unit. By performing a logic determination, the detection unit 12 detects whether the boost branch is in an abnormal operating state.

[0050] Specifically, the detection unit 12 is configured to receive the determination result and determine whether each boost branch is in an abnormal operating state. If each boost branch is detected to be in an abnormal operating state, indicating that each boost branch is not operating or is in an abnormal state, the detection unit 12 outputs a shutdown signal to disconnect the output end of each boost branch from the power supply output terminal VOUT. Optionally, the detection unit 12 may be a logic determination unit that detects whether each boost branch is in an abnormal operating state by performing a logic determination.

[0051] In some feasible implementations, the branch state determination unit 11 is configured to determine whether each boost branch is in an abnormal working state based on the control signal of the boost branch and the feedback signal of the boost branch.

[0052] Specifically, the control signal of the boost branch is the signal output by the control chip to the boost controller, which is used to control the boost branch to perform a boost. After receiving the control signal, the boost branch boosts the voltage at the power input and outputs it. The feedback signal of the boost branch is the signal output by the boost controller, which is used to control the boost branch to perform a boost and then provide feedback based on the boost situation. Figure 2 The feedback signals of the boost branch are the first feedback signal to the Nth feedback signal. The first feedback signal is output when Vboost1 is boosted to the first target voltage value, and the Nth feedback signal is output when VboostN is boosted to the Nth target voltage value. The control signals of the boost branch are the first control signal to the Nth control signal. The branch state determination unit 11 determines the operating state of the boost branch based on the control signals and the feedback signals.

[0053] It should be noted that the control chip is a main chip that controls each boost controller, and controls each boost controller based on a preset control method.

[0054] It is understandable that the branch state determination unit 11 may also include other operating information, such as current or voltage stability. For example, by detecting the current, when it is detected that the current is greater than a preset current threshold, or by calculating the current value through voltage and resistance, when it is detected that the current is greater than the current value, it is determined that the boost branch is in an abnormal operating state. For example, when it is detected that the voltage after boosting is not stable, it is determined that the boost branch is in an abnormal operating state. Whether the boost branch is operating normally is determined based on actual application conditions.

[0055] In some feasible implementations, the branch status judgment unit 11 is further used to judge whether each boost branch is in an abnormal working state based on the control signal of the boost branch, the feedback signal of the boost branch and the output voltage signal of the boost branch.

[0056] Specifically, the combining control circuit further includes a voltage detection circuit, which is connected to the output end of the boost branch and is used to detect the output voltage of the boost branch respectively. It is worth noting that since the boost controller detects the voltage between the diode and the anti-backflow control switch, and in fact the anti-backflow control switch may have a fault such as a short circuit, the working state of the boost branch is determined by detecting whether the output voltage of the boost branch is a preset value, or detecting whether the output voltage of the boost branch is the same as the voltage detected by the boost controller. In other words, the branch state judgment unit 11 is also used to determine whether each boost branch has an abnormal working condition based on the control signal of the boost branch, the feedback signal of the boost branch, and the output voltage signal of the boost branch.

[0057] In addition, the branch state judgment unit 11 is further configured to judge whether each boost branch is in an abnormal working state based on the control signal of the boost branch, the feedback signal of the boost branch and the combined voltage signal of the boost branch.

[0058] Specifically, the voltage detection circuit can also be connected to the combined boost circuit. That is, the voltage detection circuit collects the combined voltage VOUT_R and detects whether the combined voltage VOUT_R is a preset value, or whether the combined voltage VOUT_R is the same as the value obtained by adding the voltages detected by each boost controller, thereby determining the operating status of the boost branch. In other words, based on the control signal of the boost branch, the feedback signal of the boost branch, and the combined voltage signal of the boost branch, it is determined whether each boost branch is operating abnormally, thereby greatly improving control reliability.

[0059] It is worth noting that the branch state determination unit 11 is also used to determine whether each boost branch is in an abnormal working state based on multiple other input signals, not limited to the determination based on the control signal of the boost branch, the feedback signal of the boost branch, and the output voltage signal of the boost branch.

[0060] Furthermore, after receiving multiple input signals, the branch status determination unit 11 selects a preset number of input signals from the multiple input signals and, based on the selected inputs, determines whether each boost branch is in an abnormal operating state. The preset number is two or more. For example, from the boost branch control signal, the boost branch feedback signal, and the boost branch output voltage signal, the boost branch control signal and the boost branch output voltage signal are selected, and based on the boost branch control signal and the boost branch output voltage signal, determines whether each boost branch is in an abnormal operating state. It should be noted that the selected signal can be different for each boost branch.

[0061] In some possible implementations, such as Figure 4 As shown, the branch status judgment unit 11 includes:

[0062] An AND gate AND has a first input connected to the control signal terminal of the boost branch, a second input connected to the feedback signal terminal of the boost branch, and an output connected to the detection unit 12 .

[0063] Specifically, refer to Figure 4 The control signals of each boost branch are EN1 to ENN respectively. The boost controller receives the control signal, and when the control signal is high, the boost controller starts to work.

[0064] Specifically, refer to Figure 4 The feedback signal terminals of each boost branch are PWGD1 to PWGDN. The boost controller detects the voltage at the output terminal of the boost branch. After the boost controller adjusts the output voltage to the target value, it sets the feedback signal high, that is, outputs a high level.

[0065] Specifically, the first input of the AND gate AND is connected to the output of the control chip, and the control signal is specifically an enable signal. The second input of the AND gate AND is connected to the feedback signal terminal of the boost controller. Upon receiving the corresponding control signal and feedback signal, the AND gate outputs a high level when both the control signal and the feedback signal are high, indicating that the boost branch is in normal operation. That is, when both the control signal and the feedback signal are high, it is determined that the boost branch is being controlled and that the boost branch has boosted the voltage at the power input terminal to a target value, and the boost branch is judged to be in normal operation. When the control signal and / or the feedback signal are low, the AND gate outputs a low level, indicating that the boost branch is in an abnormal operation. That is, when the control signal and / or the feedback signal are low, it is determined that the boost branch is not being controlled, thereby causing the boost branch to be non-operating, or when the boost branch is being controlled but the boost branch has not boosted the voltage at the power input terminal to the target value, and the boost branch is judged to be in an abnormal operation.

[0066] Specifically, in some other feasible embodiments, the branch state determination unit 11 is further configured to determine whether each boost branch is in an abnormal operating state based on the control signal of the boost branch, the feedback signal of the boost branch, and the output voltage signal of the boost branch. In this case, the AND gate AND includes three input terminals and one output terminal, with the first input terminal connected to the control signal terminal of the boost branch, the second input terminal connected to the feedback signal terminal of the boost branch, and the third input terminal connected to the output voltage signal terminal of the boost branch. An "AND" logical operation is performed on the three input signals. It is worth noting that the branch state determination unit 11 can also be a controller that performs an "AND" logical operation on the three input terminals.

[0067] Exemplarily, upon receiving the corresponding control signal, feedback signal, and output voltage signal, the AND gate outputs a high level when the control signal, feedback signal, and output voltage signal are all high, indicating that the boost branch is in a normal operating state. That is, when the control signal, feedback signal, and output voltage signal are all high, it is confirmed that the boost branch is being controlled and that the boost branch has boosted the voltage at the power input terminal to a target value, and the boost branch is judged to be in a normal operating state. When the control signal, output voltage signal, and / or feedback signal are low (i.e., any one of the control signal, output voltage signal, or feedback signal is low), the AND gate outputs a low level, indicating that the boost branch is in an abnormal operating state. That is, when the control signal, output voltage signal, and / or feedback signal are low, it is confirmed that the boost branch is not being controlled, thereby causing the boost branch to be non-operating, or, when the boost branch is being controlled but the boost branch has not boosted the voltage at the power input terminal to the target value, the boost branch is judged to be in an abnormal operating state.

[0068] In some possible implementations, such as Figure 4 As shown, the detection unit 12 includes:

[0069] The input end of the OR gate OR is connected to the output ends of the plurality of branch state judgment units 11 respectively.

[0070] Specifically, the OR gate detects the operating status of each boost branch and outputs a shutdown signal if all boost branches are detected to be operating abnormally. If any boost branch is detected to be operating normally, it outputs a close signal. It is worth noting that the number of input terminals of the OR gate must be no less than the number of boost branches.

[0071] It is worth noting that the detection unit 12 can also be a controller that performs an “OR” logical operation.

[0072] Exemplarily, the OR gate receives the level signals output by the AND gates of each boost branch. If at least one of the level signals output by the AND gates is high, the OR gate outputs a high-level signal to the switch module 20, causing the switch module 20 to establish a connection between the output end of the boost branch and the power supply output. Consequently, at least one normally operating boost branch boosts the voltage at the power supply input and transmits it to the power supply output VOUT. If the level signals output by each AND gate AND are all low, a low-level signal is output to the switch module 20, so that the switch module 20 disconnects the output end of the boost branch from the power output end VOUT, so as to prevent the voltage of the power input end from being output to the power output end VOUT when all the boost branches are in an abnormal working state, or when all the boost branches are not started, or when part of the boost branches are in an abnormal working state and the other part of the boost branches are not started. As a result, the power output end VOUT is not truly turned off, resulting in the voltage of the power input end being directly transmitted to the subsequent circuit without being boosted, causing the output voltage to be lower than the requirement, thereby causing damage to the subsequent circuit.

[0073] In some possible implementations, such as Figure 3 As shown, the switch module 20 includes:

[0074] The control unit 21 is connected to the status detection module 10 and is used to receive a shutdown signal and output a disconnection control signal;

[0075] The switch unit 22 is connected to the control unit 21 and is arranged between the output end of each boost branch and the power output end, and is used to receive a disconnection control signal and disconnect the output end of each boost branch from the power output end VOUT.

[0076] Specifically, the control unit 21 is a driving device, that is, used to drive the switch unit 22 to operate. The control unit 21 receives a shutdown signal and outputs a disconnection control signal, which is a disconnection driving signal.

[0077] Specifically, the switch unit 22 is a switch device that disconnects after receiving a shutdown signal and connects after receiving a closing signal.

[0078] In some feasible implementations, the switch module 20 further includes:

[0079] The control unit 21 is connected to the status detection module 10 and is used to receive a shutdown signal and output a disconnection control signal;

[0080] Multiple switch units 22, each switch unit 22 is connected to the control unit 21, a first end of the switch unit 22 is connected to the output end of the boost branch, and a second end of each switch unit is connected to the power output end.

[0081] Specifically, a plurality of switch units 22 are respectively arranged at the output end of the boost branch. Optionally, the first end of each switch unit 22 is respectively connected to each boost switch tube, and the second end of each switch unit 22 is connected to the power output end VOUT after being combined. In other words, the output end of each boost branch passes through the switch unit 22 and then is combined. It is worth noting that when the state detection module 10 detects that all the boost branches are in abnormal operation, it outputs a shutdown signal respectively. After receiving the shutdown signal, each switch unit 22 disconnects the power input end from the power output end, thereby preventing the voltage at the power input end from being output to the power output end VOUT when all the boost branches are in abnormal operation, or when all the boost branches are not started, or when part of the boost branches are in abnormal operation and the other part of the boost branches are not started.

[0082] It is worth noting that the switch unit 22 can be connected between the diode and the boost switch tube, or between the boost switch tube and the output end of the boost branch. In multiple boost branches, the connection position of each switch unit 22 can be different. For example, in the first boost branch, the switch unit 22 can be connected between the diode and the boost switch tube, and in the second boost branch, the switch unit 22 can be connected between the boost switch tube and the output end of the boost branch.

[0083] In some feasible implementations, the control unit 21 includes:

[0084] The gate driver is connected to the switch unit and the status detection module respectively.

[0085] Specifically, the control unit 21 may be a gate driver for driving the switch unit 22 , where the switch unit 22 includes a gate.

[0086] In some possible implementations, such as Figure 5 As shown, the switch unit 22 includes:

[0087] A field effect transistor S1, a control end of the field effect transistor S1 is connected to the control unit 21, a first end of the field effect transistor S1 is connected to the output end of each boost branch, and a second end of the field effect transistor S1 is connected to the power output end.

[0088] Specifically, the output terminals of the boost branches are combined to form VOUT_R. Optionally, the field effect transistor S1 may be an NMOS (N-Metal-Oxide-Semiconductor) transistor.

[0089] It should be noted that the reference Figure 5FET S1 also includes a diode. The cathode of the diode in FET S1 is connected to the output terminals of the multiple boost branches, and the anode of the diode in FET S1 is connected to the power supply output terminal VOUT. Therefore, when FET S1 is turned off or on, the voltages at the output terminals of the multiple boost branches are transmitted to the power supply output terminal VOUT.

[0090] In some feasible implementations, the switch unit 22 includes:

[0091] Multiple field effect tubes, the control end of each field effect tube is connected to the control unit 21, the first end of each field effect tube is connected to the output end of each boost branch, and the second end of each field effect tube is connected to the power output end.

[0092] Specifically, by providing a plurality of field effect transistors (not shown in the figure), the stability of the control is improved.

[0093] For example, as long as one of the N boost branches works normally, it means that its control signal and feedback signal are at a high level, and they are still at a high level after the logic AND operation. After the OR gate logic operation, the output switch signal is at a high level, so that the gate driver drives the NMOS tube to turn on, so that the combined voltage VOUT_R supplies power to the subsequent load.

[0094] It is worth noting that multiple field-effect transistors can be respectively arranged in each boost branch, that is, the number of multiple field-effect transistors is the same as the number of boost branches, and they are arranged after the anti-backflow switch tube. Each boost branch is combined after passing through its own field-effect transistor. The state detection module 10 detects the working state of each boost branch respectively. When the circuit detects that the working state of the boost branch is abnormal, it controls the shutdown of the field-effect transistor corresponding to each boost branch. It should be noted that at this time, the state detection module 10 only includes an AND gate AND, and does not include an OR gate. That is, after the state detection module 10 obtains the operating information of each boost branch respectively, it determines the working state corresponding to the operating information and sends the switching signal corresponding to the working state directly to the corresponding field-effect transistor through the control unit 21. However, this solution requires a large number of field effects and is more complex than the structure of a single field-effect transistor, which increases the volume.

[0095] In some possible implementations, such as Figure 5 As shown, each field effect tube S1 is connected in reverse parallel with a diode.

[0096] Specifically, the anode of the diode connected in parallel to the field effect transistor S1 is connected to the power output terminal VOUT, and the cathode of the diode connected in parallel to the field effect transistor S1 is connected to the output terminal of each boost path. Figure 5The cathode of the diode is connected to the boost path of the combined circuit. Therefore, when the field effect transistor S1 is turned off, the voltage at the power input terminal will not be transmitted to the power output terminal VOUT through the diode.

[0097] The embodiment of the present application also provides a boost circuit, which includes multiple boost branches and the above-mentioned combining control circuit. The boost branch may also include an anti-backflow control circuit for preventing the voltage at the power output end or the voltage of other boost branches from backflowing to the input end, causing a power failure. The boost circuit of this embodiment can disconnect or disconnect the output end of each boost branch from the power output end VOUT based on the working status of all boost branches, so as to prevent the voltage at the power input end from being output to the power output end VOUT when all boost branches are in an abnormal working state, or when all boost branches are not started, or when some boost branches are in an abnormal working state and other boost branches are not started. As a result, the power output end VOUT is not truly turned off, resulting in the voltage at the power input end being directly transmitted to the subsequent circuit without being boosted, causing the output voltage to be lower than the requirement, resulting in damage to the subsequent circuit. At the same time, when all boost branches are turned off and not working, the voltage at the input end is still transmitted to the power output end. Thereby, the output power supply is truly shut down and the subsequent circuit is protected, which greatly improves the reliability of power supply.

[0098] An embodiment of the present application further provides a control method for a combiner control circuit. The control method for a combiner control circuit is applied to the above combiner control circuit, including:

[0099] Step 1: Collect the operating information of each boost branch and determine the working status of all boost branches based on the operating information;

[0100] Step 2: disconnect or establish the connection between the output end of the boost branch and the output end of the power supply based on the working status of all the boost branches.

[0101] Specifically, refer to Figure 2 The multiple boost branches are K1 to KN, and the power input terminals are VIN1 to VINN. Each boost branch receives the input voltage and, under the control of the boost controller, boosts the voltage for output. The voltages output by each boost branch are combined into a combined voltage VOUT_R. Optionally, the operating state includes normal operating state and abnormal operating state. Operation information includes startup information and boost information of the boost branch. Abnormal operation includes abnormal operating state or inactive operating state.

[0102] It is worth noting that the boost branch includes an inductor, a diode, a boost switch tube, a boost controller and an anti-backflow control circuit. Figure 2, the inductors are L1 to LN, the diodes are D1 to DN, and the boost switches are Q1 to QN.

[0103] Specifically, the switch module 20 is connected to the output end of each boost branch, respectively, for receiving the combined voltage VOUT_R. Optionally, the switch module 20 may be a switch device, for receiving a switch signal and switching on or off.

[0104] Specifically, by detecting the voltage working status of each boost branch, and outputting a switching signal based on the working status of all the boost branches, and disconnecting or connecting the output end of each boost branch with the power output end VOUT, compared with the traditional boost circuit, the present application can disconnect or connect the output end of each boost branch with the power output end VOUT based on the working status of all the boost branches, so as to prevent the voltage of the power input end from being output to the power output end VOUT when all the boost branches are in an abnormal working state, or when all the boost branches are not started, or when part of the boost branches are in an abnormal working state and the other part of the boost branches are not started, so that the power output end VOUT is not truly turned off, resulting in the voltage of the power input end being directly transmitted to the subsequent circuit without being boosted, causing the output voltage to be lower than the demand, resulting in damage to the subsequent circuit. At the same time, when all the boost branches are turned off and not working, there is still a problem of the voltage of the input end being transmitted to the power output end. Thereby, the output power supply is truly shut down and the subsequent circuit is protected, which greatly improves the reliability of power supply.

[0105] In some feasible implementations, step 2 includes the following steps:

[0106] Step (1), detecting whether all boost branches are in abnormal working state;

[0107] Step (2): when it is detected that all the boost branches are in an abnormal working state, disconnecting the output end of the boost branch from the output end of the power supply.

[0108] Specifically, the working state of each boost branch is detected. When it is detected that all the boost branches are in abnormal operation, a shutdown signal is output, so that the switch module 20 disconnects the output end of each boost branch from the VOUT connection of the power supply output end.

[0109] In addition, when it is detected that any boost branch is in a normal working state, a closing signal is outputted. After receiving the closing signal, the switch module 20 connects the output end of each boost branch with the power output end VOUT.

[0110] It should be noted that when all the boost branches are in an abnormal working state, or when all the boost branches are not started, or when some of the boost branches are in an abnormal working state and the other part of the boost branches are not started, the combined voltage VOUT_R will take the maximum one among the multiple power input terminals, that is, the combined voltage VOUT_R is the maximum one among the power input terminals minus the voltage drop of the diode D1, which is equivalent to all the boost branches not working, and the combined voltage VOUT_R still has residual voltage.

[0111] Specifically, the connection between the output end of the boost branch and the power output end after being combined can be disconnected, and the output end of each boost branch can be disconnected separately, that is, the output end of each boost branch is respectively connected after passing through the switch unit. It is worth noting that when it is detected that all the boost branches are in abnormal operation, a shutdown signal is output respectively, and after receiving the shutdown signal, each switch unit disconnects the connection between the power input end and the power output end, thereby preventing the voltage at the power input end from being output to the power output end VOUT when all the boost branches are in abnormal operation, or when all the boost branches are not started, or when part of the boost branches are in abnormal operation and the other part of the boost branches are not started.

[0112] In some feasible implementations, step one includes the following steps:

[0113] Step (1), obtaining the control signal and feedback signal of each boost branch;

[0114] Step (2): when it is detected that the control signal is not an enable signal and / or when it is detected that the feedback signal is not a boost signal, it is confirmed that the boost branch is in an abnormal working state.

[0115] Specifically, when the control signal is at a high level, the control signal is confirmed to be an enable signal. When the feedback signal is at a high level, the feedback signal is confirmed to be a boost signal. When the control signal is detected to be at a low level and / or when the feedback signal is detected to be at a high level, it is confirmed that the boost branch is in an abnormal operating state.

[0116] Specifically, the AND gate AND and the OR gate OR in the combiner control circuit can be used to confirm that the boost branch is in an abnormal working state. Specifically, the first input terminal of the AND gate AND is connected to the output terminal of the control chip, and the control signal is specifically an enable signal. The second input terminal of the AND gate AND is connected to the feedback signal terminal of the boost controller. When the AND gate AND receives the corresponding control signal and feedback signal, and both the control signal and the feedback signal are high, it outputs a high level, that is, one of the boost branches is in a normal working state. In other words, when both the control signal and the feedback signal are high, it is confirmed that the boost branch is controlled and the boost branch boosts the voltage of the power input terminal to the target value. At this time, it is determined that the boost branch is in a normal working state. When the control signal and / or the feedback signal are low, it outputs a low level, that is, one of the boost branches is in an abnormal working state. That is to say, when the control signal and / or feedback signal is at a low level, it is confirmed that the boost branch is not controlled, so that the boost branch is not working, or the boost branch is controlled, but the boost branch does not boost the voltage of the power input end to the target value. At this time, it is judged that the boost branch is in an abnormal working state.

[0117] Specifically, the OR gate detects the operating status of each boost branch and outputs a shutdown signal if all boost branches are detected to be operating abnormally. If any boost branch is detected to be operating normally, it outputs a close signal. It is worth noting that the number of input terminals of the OR gate must be no less than the number of boost branches.

[0118] Exemplarily, the OR gate OR receives the level signals output by the AND gates AND of each boost branch. If at least one of the level signals output by each AND gate AND is high, it is confirmed that the boost branches are all in normal working condition. If the level signals output by each AND gate AND are all low, it is confirmed that the boost branches are all in abnormal working condition.

[0119] In some feasible implementations, step one may further include the following steps:

[0120] Step (1): Obtain the control signal, feedback signal and output voltage signal of each boost branch;

[0121] Step (2): when it is detected that the control signal is not an enable signal, the feedback signal is not a boost signal, and / or the output voltage signal is not a preset voltage signal, it is confirmed that the boost branch is in an abnormal working state.

[0122] Specifically, the combining control circuit further includes a voltage detection circuit, which is connected to the output end of the boost branch and is used to detect the output voltage of each boost branch. It is worth noting that since the boost controller detects the voltage between the diode and the anti-backflow control switch, and in fact the anti-backflow control switch may have a fault such as a circuit breaker, the working state of the boost branch is determined by detecting whether the output voltage of the boost branch is a preset value, or detecting whether the output voltage of the boost branch is the same as the voltage detected by the boost controller. In other words, based on the control signal of the boost branch, the feedback signal of the boost branch, and the output voltage signal of the boost branch, it is determined whether each boost branch is in an abnormal working state, thereby greatly improving the reliability of the control.

[0123] In addition, the branch state judgment unit is further used to judge whether each boost branch is in an abnormal working state based on the control signal of the boost branch, the feedback signal of the boost branch and the combined voltage signal of the boost branch.

[0124] Specifically, the voltage detection circuit can also be connected to the combined boost circuit. That is, the voltage detection circuit collects the combined voltage VOUT_R and detects whether the combined voltage VOUT_R is a preset value, or whether the combined voltage VOUT_R is the same as the value obtained by adding the voltages detected by each boost controller, thereby determining the operating status of the boost branch. In other words, based on the control signal of the boost branch, the feedback signal of the boost branch, and the combined voltage signal of the boost branch, it is determined whether each boost branch is operating abnormally, thereby greatly improving control reliability.

[0125] It is worth noting that the branch state determination unit 11 is also used to determine whether each boost branch is in an abnormal working state based on multiple other input signals, not limited to the determination based on the control signal of the boost branch, the feedback signal of the boost branch, and the output voltage signal of the boost branch.

[0126] Furthermore, after receiving multiple input signals, the branch status determination unit 11 selects a preset number of input signals from the multiple input signals and, based on the selected inputs, determines whether each boost branch is in an abnormal operating state. The preset number is two or more. For example, from the boost branch control signal, the boost branch feedback signal, and the boost branch output voltage signal, the boost branch control signal and the boost branch output voltage signal are selected, and based on the boost branch control signal and the boost branch output voltage signal, determines whether each boost branch is in an abnormal operating state. It should be noted that the selected signal can be different for each boost branch.

[0127] Exemplarily, upon receiving the corresponding control signal, feedback signal, and output voltage signal, the AND gate outputs a high level when the control signal, feedback signal, and output voltage signal are all high, indicating that the boost branch is in a normal operating state. That is, when the control signal, feedback signal, and output voltage signal are all high, it is confirmed that the boost branch is being controlled and that the boost branch has boosted the voltage at the power input terminal to a target value, and the boost branch is judged to be in a normal operating state. When the control signal, output voltage signal, and / or feedback signal are low (i.e., any one of the control signal, output voltage signal, or feedback signal is low), the AND gate outputs a low level, indicating that the boost branch is in an abnormal operating state. That is, when the control signal, output voltage signal, and / or feedback signal are low, it is confirmed that the boost branch is not being controlled, thereby causing the boost branch to be non-operating, or, when the boost branch is being controlled but the boost branch has not boosted the voltage at the power input terminal to the target value, the boost branch is judged to be in an abnormal operating state.

[0128] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method.

[0129] The embodiment of the present application also provides an electronic device, such as Figure 6 As shown, it includes a memory A1 and a processor A2, the memory A1 stores a computer program, and the processor A2 is configured to run the computer program to execute the steps in any of the above-mentioned control method embodiments of the combiner control circuit.

[0130] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above-mentioned control method embodiments of the combiner control circuit when running.

[0131] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0132] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps in any of the above-mentioned control method embodiments of the combiner control circuit are implemented.

[0133] An embodiment of the present application also provides another computer program product, including a non-volatile computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps in any of the above-mentioned control method embodiments of the combining control circuit.

[0134] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0135] The above is a detailed introduction to a combining control circuit and its control method, device, medium and product provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A combining control circuit, characterized in that: The combining control circuit is connected to one or more boost branches, and the combining control circuit includes: a state detection module, wherein an input end of the state detection module is respectively connected to each boost branch, and is used to collect operating information of each boost branch, and determine the working state of all boost branches based on the operating information, and output a switching signal based on the working state of all boost branches; a switch module, connected to the state detection module and disposed between the output end of each boost branch and the power supply output end, configured to receive a switch signal and disconnect or establish a connection between the output end of the boost branch and the power supply output end based on the switch signal; The state detection module is used to output a shutdown signal when it detects that all the boost branches are in an abnormal working state; The switch module is used to receive a shutdown signal and disconnect the output end of each boost branch from the output end of the power supply; The state detection module includes: a plurality of branch state judgment units; The branch state judgment unit is used to judge whether each boost branch is in an abnormal working state based on the control signal of the boost branch and the feedback signal of the boost branch; Each of the branch state judgment units is connected to the working state end of each boost branch, and is used to judge whether each boost branch is in an abnormal working state and output the judgment result; The status detection module includes: a detection unit, wherein the input end of the detection unit is respectively connected to the output ends of the plurality of branch state judgment units, and is used to receive the judgment result and detect whether all the boost branches are in an abnormal working state, and output a shutdown signal when it is detected that all the boost branches are in an abnormal working state; The branch status judgment unit includes: An AND gate, wherein a first input end of the AND gate is connected to the control signal end of the boost branch, a second input end of the AND gate is connected to the feedback signal end of the boost branch, and an output end of the AND gate is connected to the detection unit.

2. The combining control circuit according to claim 1, characterized in that: The branch state judgment unit is further configured to judge whether each boost branch is in an abnormal working state based on the control signal of the boost branch, the feedback signal of the boost branch and the output voltage signal of the boost branch.

3. The combining control circuit according to claim 1, wherein: The detection unit comprises: An OR gate, wherein the input ends of the OR gate are respectively connected to the output ends of the multiple branch status judgment units.

4. The combining control circuit according to claim 1, wherein: The switch module includes: a control unit connected to the state detection module, configured to receive a shutdown signal and output a disconnection control signal; The switch unit is connected to the control unit and is arranged between the output end of each boost branch and the power output end, and is used to receive a disconnection control signal and disconnect the output end of each boost branch from the power output end.

5. The combining control circuit according to claim 1, characterized in that: The switch module further includes: a control unit connected to the state detection module, configured to receive a shutdown signal and output a disconnection control signal; A plurality of switch units are provided, each of the switch units is connected to the control unit, a first end of the switch unit is connected to the output end of the boost branch, and a second end of the switch unit is connected to the power supply output end.

6. The combining control circuit according to claim 4 or 5, characterized in that: The control unit comprises: A gate driver is connected to the switch unit and the state detection module respectively.

7. The combining control circuit according to claim 4, characterized in that: The switch unit includes: A field effect tube, wherein the control end of the field effect tube is connected to the control unit, the first end of the field effect tube is connected to the output end of each boost branch, and the second end of the field effect tube is connected to the power output end.

8. The combining control circuit according to claim 4, characterized in that: The switch unit includes: Multiple field effect tubes, the control end of each field effect tube is connected to the control unit respectively, the first end of each field effect tube is connected to the output end of each boost branch in sequence, and the second end of each field effect tube is connected to the power output end in sequence.

9. The combining control circuit according to claim 7 or 8, characterized in that: Each field effect tube is connected in antiparallel with a diode.

10. A control method for a combining control circuit, characterized in that: The control method of the combiner control circuit is applied to the combiner control circuit according to any one of claims 1 to 9, and the control method of the combiner control circuit includes: Collecting operating information of each boost branch and determining the working status of all boost branches based on the operating information; The connection between the output end of the boost branch and the output end of the power supply is disconnected or established based on the working status of all the boost branches.

11. The control method of the combiner control circuit according to claim 10, characterized in that: The step of disconnecting or connecting the output end of the boost branch and the output end of the power supply based on the working status of all the boost branches includes: Check whether all boost branches are in abnormal working state; When it is detected that all the boost branches are in an abnormal working state, the connection between the output end of the boost branch and the output end of the power supply is disconnected.

12. The control method of the combiner control circuit according to claim 10, characterized in that: The step of collecting the operating information of each boost branch and determining the working status of all boost branches based on the operating information includes: Obtaining control signals and feedback signals of each boost branch; When it is detected that the control signal is not an enable signal and / or it is detected that the feedback signal is not a boost signal, it is confirmed that the boost branch is in an abnormal working state.

13. The control method of the combiner control circuit according to claim 10, characterized in that: The step of collecting the operating information of each boost branch and determining the working status of all boost branches based on the operating information further includes: Obtaining control signals, feedback signals and output voltage signals of each boost branch; When it is detected that the control signal is not an enable signal, the feedback signal is not a boost signal, and / or the output voltage signal is not a preset voltage signal, it is confirmed that the boost branch is in an abnormal working state.

14. An electronic device, characterized in that: include: memory for storing computer programs; A processor, configured to implement the steps of the control method of the combiner control circuit according to any one of claims 10 to 13 when executing the computer program.

15. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the control method of the combiner control circuit according to any one of claims 10 to 13.

16. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the control method of the combiner control circuit according to any one of claims 10 to 13 are implemented.

Images