Drive and electronic devices

Abstract

A drive device and electronic device are provided. The drive device includes an edge control generating module (10), a first drive module (20), a second drive module (30), and a switch module (40). The edge control generating module (10) outputs a first edge control signal and a second edge control signal at a predetermined interval, the first drive module (20) is controlled by the first edge control signal to output a first edge drive signal to the switch module (40), and the second drive module (30) is controlled by the second edge control signal to output a second edge drive signal to the switch module (40), so that the power electronic device is turned on and off by the control of the first edge drive signal and the second edge drive signal.

Description

[Technical Field]

[0001] This application is filed based on and claims priority from a Chinese patent application bearing application number 202110929027.9 and filing date August 13, 2021, the entire contents of which are hereby incorporated by reference into this application.

[0002] The present application relates to the field of electronics, and in particular to driving devices and electronic equipment. [Background technology]

[0003] In some cases, when driving a power electronic device, a driving device typically provides a high-level driving signal to the power electronic device to turn the power electronic device on. Generally, the on-time of the power electronic device coincides with the duration of the high-level signal, and the power electronic device is turned on when it receives a high-level rising edge signal and turned off when it receives a high-level falling edge signal. This driving method requires more energy to keep the power electronic device continuously on, resulting in a relatively large driving loss. Furthermore, the driving device is typically driven by a transformer with a relatively large volume, which increases the overall volume of the driving device. Summary of the Invention [Problem to be solved by the invention]

[0004] The following is a summary of the subject matter described in detail herein, which does not limit the scope of protection of the claims.

[0005] The embodiments of the present application provide a drive unit and electronics. [Means for solving the problem]

[0006] In a first aspect, an embodiment of the present application provides a drive device, the drive device including: an edge control generating module configured to output a first edge control signal and a second edge control signal at a predetermined interval; a first drive module configured to receive the first edge control signal from the edge control generating module and output at least one first edge drive signal based on the first edge control signal; a second drive module configured to receive the second edge control signal from the edge control generating module and output at least one second edge drive signal based on the second edge control signal; and at least one switch module configured to receive the first edge drive signal from the first drive module and the second edge drive signal from the second drive module, and to turn on or off a power electronic device based on the first edge drive signal and the second edge drive signal, respectively.

[0007] In a second aspect, an embodiment of the present application provides an electronic device including the drive device according to the first aspect. The drawings are used to provide a further understanding of the technical solution of the present application, constitute a part of the specification, and are used to explain the technical solution of the present application together with the examples of the present application, but are not intended to limit the technical solution of the present application. [Brief explanation of the drawings]

[0008] [Figure 1] 1A to 1C are schematic diagrams illustrating waveform relationships between an on signal and a drive signal of a power electronic device in some cases. [Figure 2] 1 is a schematic diagram illustrating the configuration of a drive device according to an embodiment of the present application. [Figure 3] 3 is a schematic diagram illustrating the waveform relationship between an ON signal, a first edge control signal, and a second edge control signal of a power electronic device according to an embodiment of the present application. FIG. [Figure 4] 1 is a schematic diagram of a circuit configuration of an example of a driving device according to an embodiment of the present application. [Figure 5] FIG. 10 is a circuit configuration schematic diagram of another driving device according to an embodiment of the present application. [Figure 6]3 is a schematic diagram illustrating the waveform relationship between an ON signal, a first edge control signal, and a second edge control signal of a power electronic device according to an embodiment of the present application. FIG. [Figure 7] FIG. 10 is a circuit configuration schematic diagram of another driving device according to an embodiment of the present application. [Figure 8] FIG. 10 is a circuit configuration schematic diagram of another driving device according to an embodiment of the present application. [Figure 9] FIG. 10 is a circuit configuration schematic diagram of another driving device according to an embodiment of the present application. [Figure 10] 3 is a schematic diagram illustrating the waveform relationship between an ON signal, a first edge control signal, and a second edge control signal of a power electronic device according to an embodiment of the present application. FIG. [Figure 11] FIG. 10 is a circuit configuration schematic diagram of another driving device according to an embodiment of the present application. [Figure 12] 3 is a schematic diagram illustrating the waveform relationship between an ON signal, a first edge control signal, and a second edge control signal of a power electronic device according to an embodiment of the present application. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] In order to more clearly understand the objectives, technical solutions and advantages of the present application, the present application will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to illustrate the present application and are not used to limit the present application.

[0010] In the description of the embodiments of the present application, terms such as "first" and "second" are used merely to distinguish technical features and should not be understood as indicating or implying relative importance, implicitly indicating the number of such technical features, or implicitly indicating the context of such technical features. "At least one" refers to one or more, and "multiple" refers to two or more. "And / or" describes a relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the cases where A exists alone, A and B exist simultaneously, or B exists alone. A and B may be singular or plural. The symbol " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any group of these items, including any group of single or multiple items. For example, at least one of a, b, and c can represent a, b, c, a and b, a and c, b and c, or a, b, and c, and a, b, and c may be singular or plural.

[0011] As will be appreciated by those skilled in the art, the connections described in the embodiments of the present application include direct connections and indirect connections that are made through intermediate components.

[0012] Furthermore, the technical features according to the embodiments of the present application described below may be combined with each other as long as they do not cause mutual contradictions.

[0013] In some cases, when driving a power electronic device, the power electronic device is turned on by providing a single high-level signal to the power electronic device via a driving transformer. As shown in Figure 1, the on-time T on is the duration of the high-level signal T drive , the power electronic device is turned on when it receives a high level rising edge signal, and is turned off when it receives a high level falling edge signal.

[0014] This driving method requires more energy to keep the power electronic device continuously turned on, resulting in relatively large driving losses. Generally, the driving transformer used to implement this driving method is typically relatively large in volume, and typically requires a blocking capacitor installed in the primary winding of the driving transformer to prevent saturation of the driving transformer. Furthermore, when dynamic operating conditions such as the driving duty ratio are changed, the driving level changes according to the duty ratio due to limitations of the transformer's volt-second balance principle. As a result, this typical power electronic device driving method is not applicable when the duty ratio needs to be significantly adjusted.

[0015] In view of this, the embodiments of the present application provide a drive unit and electronics that do not need to output a continuous high level signal to keep the power electronic device continuously turned on, thereby reducing drive losses and the volume of the drive unit.

[0016] As shown in Figure 2, Figure 2 is a schematic diagram of the configuration of a driving device according to an embodiment of the present application. As shown in Figure 2, the driving device according to the embodiment of the present application includes an edge control generating module 10, a first driving module 20, a second driving module 30, and a switch module 40. Here, the input terminals of the first driving module 20 and the second driving module 30 are respectively connected to the edge control generating module 10, and the output terminals of the first driving module 20 and the second driving module 30 are respectively connected to the switch module 40.

[0017] The edge control generating module 10 according to the embodiment of the present application is configured to output a first edge control signal and a second edge control signal at a predetermined interval. Specifically, the edge control generating module 10 can alternately output the first edge control signal and the second edge control signal through two output terminals, that is, the first output terminal outputs the first edge control signal and the second output terminal outputs the second edge control signal, and the two output terminals do not output edge control signals simultaneously, and the output time interval between the first edge control signal and the second edge control signal may be preset.

[0018] In a specific implementation, the high-level durations of the first edge control signal and the second edge control signal may be set to the order of nanoseconds, specifically, within 100 ns, but may be longer than 100 ns, and the embodiments of the present application are not limited thereto.

[0019] The edge control generating module 10 according to the embodiment of the present application can be specifically realized by an ARM, a DSP or other digital control chip.

[0020] The first driving module 20 according to the embodiment of the present application is configured to receive a first edge control signal from the edge control generating module 10 and output at least one first edge driving signal based on the first edge control signal, and the second driving module 30 is configured to receive a second edge control signal from the edge control generating module 10 and output at least one second edge driving signal based on the second edge control signal. In this way, the first driving module 20 and the second driving module 30 alternately output edge driving signals to the switch module 40.

[0021] The number of switch modules 40 according to the embodiment of the present application may be one or more, and each switch module 40 is configured to receive a first edge drive signal from the first drive module 20 and a second edge drive signal from the second drive module 30, and to turn on or off a power electronic device 50 based on the first edge drive signal and the second edge drive signal.

[0022] In some embodiments, the power electronic device 50 is continuously turned on after the switch module 40 receives the first edge drive signal from the first drive module 20, and the power electronic device 50 is continuously turned off after the switch module 40 receives the second edge drive signal from the second drive module 30. In this way, two consecutive edge drive signals control the conduction and cut-off of the power electronic device 50.

[0023] 3 is a schematic diagram showing the waveform relationship between the ON signal, the first edge control signal, and the second edge control signal of the power electronic device 50 according to the embodiment of the present application. on indicates the on-time of the power electronic device, and T off indicates the off-time of the power electronic device. As shown in FIG. 3, the on-time T on is determined by the time interval between receiving the first edge drive signal and the second edge drive signal.

[0024] In this embodiment, the edge control generating module 10 outputs a first edge control signal and a second edge control signal at a predetermined interval. The first edge control signal controls the first driving module 20 to output a first edge drive signal to the switch module 40. The second edge control signal controls the second driving module 30 to output a second edge drive signal to the switch module 40. The switch module 40 then controls the first and second edge drive signals to turn on and off the power electronic device 50. The on-duration of the power electronic device 50 is the time interval between the rising edge of the first edge drive signal and the rising edge of the second edge drive signal. This enables the power electronic device 50 to be turned on or off based on the first and second edge drive signals. This embodiment eliminates the need to provide a continuously high voltage level to keep the power electronic device 50 on. This reduces the energy required to keep the power electronic device 50 on, reduces drive losses, and contributes to reducing the volume of the drive device.

[0025] The drive device according to the present invention will be described in more detail below with reference to several specific embodiments.

[0026] Example 1 As shown in FIG. 4, FIG. 4 is a schematic diagram of the circuit configuration of a driving device according to an embodiment of the present invention.

[0027] 4, the first driving module 20 may include a first driving transformer T1. The first driving transformer T1 includes a first primary winding T10 and a first secondary winding T11. The first primary winding T10 is connected to the edge control generating module 10 and is used to receive a first edge control signal from the edge control generating module 10. The first secondary winding T11 is connected to the switch module 40. After detecting the first edge control signal from the first primary winding T10, the first secondary winding T11 outputs a first edge driving signal to the corresponding switch module 40 based on the first edge control signal.

[0028] The driving device according to the embodiment of the present application further includes a power supply circuit 60, which may have a plurality of voltage output terminals respectively connected to the dot-side terminal of the first primary winding T10 and the edge control generating module 10, for providing operating voltages for the first driving transformer T1 and the edge control generating module 10.

[0029] In some embodiments, a third switch tube S1 and a third diode D1 are provided between the edge control generating module 10 and the first driving transformer T1, the gate of the third switch tube S1 is connected to the first output terminal of the edge control generating module 10, the anode of the third diode D1 is connected to the drain of the third switch tube S1, and the cathode of the third diode D1 is connected to the dot-side terminal of the first primary winding T10.

[0030] When the edge control generating module 10 outputs the first edge control signal to the third switch tube S1, the third switch tube S1 is turned on, and the third switch tube S1 applies the voltage between the power supply circuit 60 and the reference ground to both ends of the first primary winding T10. After the first secondary winding T11 detects the edge voltage corresponding to the first edge control signal from the first primary winding T10, it outputs the first edge driving signal to the corresponding switch module 40.

[0031] 4, the second driving module 30 includes a second driving transformer T2, which includes a second primary winding T20 and a second secondary winding T21. The second primary winding T20 is connected to the edge control generating module 10 and is used to receive a second edge control signal from the edge control generating module 10. The second secondary winding T21 is connected to the switch module 40, which is used to detect the second edge control signal from the second primary winding T20 and then output a second edge driving signal to the corresponding switch module 40 based on the second edge control signal.

[0032] The voltage output terminal of the power supply circuit 60 is further connected to the dot terminal of the second primary winding T20, thereby providing the operating voltage to the second drive transformer T2.

[0033] In some embodiments, a fourth switch tube S2 and a fourth diode D2 are provided between the edge control generating module 10 and the second driving transformer T2, the gate of the fourth switch tube S2 is connected to the second output terminal of the edge control generating module 10, the anode of the fourth diode D2 is connected to the drain of the fourth switch tube S2, and the cathode of the fourth diode D2 is connected to the dot-side terminal of the second primary winding T20.

[0034] When the edge control generating module 10 outputs the second edge control signal to the fourth switch tube S2, the fourth switch tube S2 is turned on, and the fourth switch tube S2 applies the voltage between the power supply circuit 60 and the reference ground to both ends of the second primary winding T20. After the second secondary winding T21 detects the edge voltage corresponding to the second edge control signal from the second primary winding T20, it outputs a second edge driving signal to the corresponding switch module 40.

[0035] The third diode D1 may be a reset diode, which provides a discharge circuit for the first driving transformer T1 after the first edge control signal is removed and the third switching tube S1 is turned off. Similarly, the fourth diode D2 may be a reset diode, which provides a discharge circuit for the second driving transformer T2 after the second edge control signal is removed and the fourth switching tube S2 is turned off.

[0036] The edge control generating module according to the embodiment of the present application includes an edge control generating chip (ARM, DSP or other digital control chip), which is used to output a first edge control signal and a second edge control signal at a predetermined interval.

[0037] In a specific embodiment, the edge control generating module further includes a first driving capability enhancing circuit, and the edge control generating chip outputs a first edge control signal to the first driving capability enhancing circuit, which enhances and processes the first edge control signal, and outputs the processed first edge control signal to the gate of the third switch tube S1.

[0038] In a specific embodiment, the edge control generating module further includes a second driving capability enhancing circuit, and the edge control generating chip outputs a second edge control signal to the second driving capability enhancing circuit, which enhances and processes the second edge control signal, and outputs the processed second edge control signal to the gate of the fourth switch tube S2.

[0039] The power supply circuit 60 includes an edge control generating chip, a first driving capability enhancing circuit, and a third 2 By connecting to the drive capability enhancement circuit, the edge control generation chip, the first drive capability enhancement circuit, the 2 Provides an operating voltage to the drive capability enhancement circuit.

[0040] In some embodiments, the first drive capability enhancing circuit and the second drive capability enhancing circuit are each an AND gate circuit or a push-pull circuit. Of course, the first drive capability enhancing circuit and the second drive capability enhancing circuit may be a device, circuit, or apparatus used to enhance drive capability. The first drive capability enhancing circuit and the second drive capability enhancing circuit may be the same circuit type or different circuit types. For example, the first drive capability enhancing circuit is an AND gate circuit and the second drive capability enhancing circuit is a push-pull circuit. The embodiments of the present application do not limit the specific circuit structures of the first drive capability enhancing circuit and the second drive capability enhancing circuit.

[0041] In the present embodiment, in order to enhance the driving capability of the edge control signal output by the edge control generating chip (ARM, DSP, or other digital control chip) and ensure that the third switch tube S1 and the fourth switch tube S2 are reliably turned on, one-stage driving capability enhancement circuits are installed between the edge control generating chip and the third switch tube S1 and between the edge control generating chip and the fourth switch tube S2 to enhance the driving capability. The first edge control signal output by the edge control generating chip is enhanced through the first driving capability enhancement circuit before being output to the third switch tube S1, thereby reliably turning on the third switch tube S1. The second edge control signal output by the edge control generating chip is enhanced through the second driving capability enhancement circuit before being output to the fourth switch tube S2, thereby reliably turning on the fourth switch tube S2.

[0042] As shown in FIG. 4, a switch module 40 according to an embodiment of the present invention includes a conducting circuit 41 and a blocking circuit 42.

[0043] The conduction circuit 41 includes a first diode D3 and a first drive input terminal VI1, the anode of the first diode D3 is connected to the first drive input terminal VI1, and the cathode of the first diode D3 is connected to the power electronic device M1.

[0044] The interruption circuit 42 includes a first switch tube S3, a second switch tube S4, and a second drive input terminal VI2, the gate of the first switch tube S3 is connected to the second drive input terminal VI2, the drain of the first switch tube S3 is connected to the gate of the second switch tube S4, and the drain of the second switch tube S4 is connected to the power electronic device M1.

[0045] In one example, the first drive input terminal VI1 is used to receive the first edge drive signal from the first drive module 20, and the second drive input terminal VI2 is used to receive the second edge drive signal from the second drive module 30.

[0046] In another example, the first driving input terminal VI1 is used to receive the second edge driving signal from the second driving module 30, and the second driving input terminal VI2 is used to receive the first edge driving signal from the first driving module 20. For example, in the example of FIG. 4, the power electronic device 50 includes one power electronic device M1, which may specifically be a MOSFET switch tube. Of course, other voltage-driven power electronic devices can also be applied to the basic circuit topology structure of the driver according to the embodiment of the present application. Hereinafter, the embodiment of the present application will be described taking the power electronic device as a MOSFET switch tube as an example.

[0047] As shown in FIG. 4, the gate of the power electronic device M1 is connected to the cathode of the first diode D3, and the source of the power electronic device M1 is connected to the source of the first switch tube S3 and the drain of the second switch tube S4.

[0048] Here, the first driving input terminal VI1 and the second driving input terminal VI2 are used to be connected to the first driving module 20 and the second driving module 30 in one-to-one correspondence. That is, the first driving input terminal VI1 is connected to the first driving module 20, and the second driving input terminal VI2 is connected to the second driving module 30.

[0049] 4, the first drive input terminal VI1 of the conduction circuit 41 is connected to the dotted terminal of the first secondary winding T11 to receive the first edge drive signal from the first secondary winding T11. The second drive input terminal VI2 of the interruption circuit 42 is connected to the dotted terminal of the second secondary winding T21 to receive the second edge drive signal from the second secondary winding T21.

[0050] For example, the first switch tube S3 is an NMOS tube and the second switch tube S4 is a PMOS tube. Of course, the first switch tube S3 and the second switch tube S4 may be triodes or devices with similar functions, and the embodiments of the present application are not limited thereto.

[0051] The operating principle of the switch module 40 will be described below with reference to FIG.

[0052] The conduction process of the switch module 40 is as follows. After receiving the first edge driving signal from the first secondary winding T11, the first driving input terminal VI1 of the conduction circuit 41 transmits the first edge driving signal to the gate of the power electronic device M1 via the first diode D3, turning on the power electronic device M1 and realizing conduction of the power electronic device. Due to the unidirectional conductivity of the first diode D3, the gate capacitor of the power electronic device M1 continues to maintain a high-level voltage that turns on the power electronic device M1 after the first edge driving signal disappears, preventing reverse discharge of the gate capacitor of the power electronic device M1. Therefore, the duration of the first edge control signal applied to the first primary winding T10 of the first driving transformer T1 can be significantly shortened. The duration of the first edge control signal may be 20 ns to 100 ns, but can also be longer than 100 ns.

[0053] The shutdown process of the switch module 40 is as follows: after receiving the second edge drive signal output from the second secondary winding T21, the second drive input terminal VI2 of the shutdown circuit 42 transmits the second edge drive signal to the gate of the first switch tube S3, turning on the first switch tube S3, and transmits the second edge drive signal to the second switch tube S4, turning on the second switch tube S4. After the second switch tube S4 is turned on, a discharge circuit is provided for the power electronic device M1, turning off the power electronic device M1, and realizing shutdown of the power electronic device.

[0054] 3 for the waveform relationship between the ON signal of the power electronic device M1, the first edge control signal, and the second edge control signal in the driving device shown in FIG.

[0055] 4, the conduction circuit 41 may further include a first resistor R2 connected between the cathode of the first diode D3 and the power electronic device M1. The first resistor R2 is used to limit the gate charging current of the power electronic device M1, thereby activating the current limiting function and reducing EMI.

[0056] 4, the shutdown circuit 42 may further include a second resistor R3. The second resistor R3 is connected between the source of the second switch tube S4 and the power electronic device M1. The second resistor R3 is used to limit the shutdown speed of the power electronic device M1, serving as a shutdown current limiter and reducing EMI.

[0057] 4, the blocking circuit 42 may further include a second diode D4 and an RC circuit. The RC circuit is connected between the drain and source of the first switch tube S3, the anode of the second diode D4 is connected to the first drive input terminal VI1, and the cathode of the second diode D4 is connected to the RC circuit.

[0058] Specifically, the RC circuit includes a third resistor R1 and a first capacitor C1, and the third resistor R1 is connected in parallel with the first capacitor C1.

[0059] By using the RC circuit, the shutdown circuit 42 according to the embodiment of the present application further provides a fault protection mechanism for realizing automatic shutdown of the power electronic device. The working principle of the fault protection mechanism is as follows.

[0060] When the first edge driving signal arrives, the gate level of the second PMOS switch tube S4 is higher than its source level due to the presence of the first resistor R2. Therefore, the second switch tube S4 is always in the off state while the power electronic device M1 is turned on. Assuming the on-voltage drop of the second diode D4 is ignored, the first capacitor C1 is charged to the voltage across the first secondary winding T11 through the second diode D4. Then, due to the unidirectional conductivity of the second diode D4 and the absence of the second edge driving signal, the first switch tube S3 turns off and the first capacitor C1 is discharged through the third resistor R1. Due to the relatively large resistance value of R1 and the long time constant of the RC charging and discharging combination formed by R1 and C1, the second switch tube S4 is always in the off state before the normal second edge driving signal arrives. That is, the gate-source voltage of the power electronic device M1 remains high, continuously turning on. When a normal second-edge control signal arrives, the first switch tube S3 turns on, providing a small-resistance discharge circuit for the first capacitor C1, thereby lowering the gate level of the second switch tube S4 below the source level. The second switch tube S4 turns on, clamping the gate-source voltage of the power electronic device M1 to a voltage value lower than the gate activation voltage. The gate-source voltage of the power electronic device M1 is quickly discharged by the second resistor R3 and the second switch tube S4, achieving normal, fast shutdown of the power electronic device M1. If there is no second-edge control signal and the first-edge control signal does not appear later, the voltage across the first capacitor C1 is slowly discharged by the third resistor R1. When the gate level of the second switch tube S4 becomes lower than the source level, the second switch tube S4 is turned on, causing the gate-source voltage of the power electronic device M1 to begin to drop, thus achieving self-shutdown.

[0061] The time constant of the R1C1 combination used in the embodiments of the present application may be within three times the typical on-off cycle of the power electronic device M1, or may be adjusted according to the actual application scenario.

[0062] Note that, unlike the first drive transformer T1, the second drive transformer T2 does not need to provide energy for charging the gate capacitor of the power electronic device M1, and therefore the second drive transformer T2 may be replaced with another isolated signal transmission device, such as a photocoupler.

[0063] 4 is specifically implemented, the duration of the second edge control signal may be shorter than the duration of the first edge control signal, for example, 100 ns and 20 to 50 ns, or the duration of the second edge control signal may be the same as the first edge duration.

[0064] It should be noted that the third switch tube S1 and the fourth switch tube S2 described in the embodiments of the present application may be any fully controlled switch tube.

[0065] Example 2 As shown in FIG. 5, FIG. 5 is a schematic diagram of the circuit configuration of another driving device according to an embodiment of the present application.

[0066] In some cases, considering factors such as cost and the industry-wide voltage level of power electronic devices (e.g., MOSFETs), it is necessary to use series connection of power electronic devices (e.g., high-voltage devices) to reduce cost or improve voltage resistance. However, the industry has not yet found a satisfactory solution for the drive behavior of series MOSFETs. Because MOSFET devices lack automatic voltage equalization, even slight differences in the internal parameters of the devices can affect the drain-source voltage imbalance during on-off of series power electronic devices. In particular, devices with slow conduction or fast interruption in series power electronic devices are subjected to high voltages, and in severe cases, overvoltage breakdown can occur. On the other hand, when connecting power electronic devices in series, the dynamic voltage imbalance of the power electronic devices is primarily determined by the mismatch of the external drive signals and the discreteness of the devices themselves.

[0067] The embodiments of the present application provide an edge-isolated driving method that solves the above problems by reducing the energy required by the driving transformer to keep the power electronic device continuously on, reducing driving losses, thereby reducing the volume of the driving transformer, reducing the number of turns of the winding, reducing the effects of parasitic parameters such as leakage inductance, ensuring good driving consistency of the secondary multi-circuit winding output, and ensuring good consistency of the switching speed of the multi-path series drive.

[0068] The driving device shown in FIG. 5 provides a mode in which N (N≧2) power electronic devices are driven in series.

[0069] 5, the first drive module 20 includes a first drive transformer T1, which includes a first primary winding T10 and N first secondary windings (T11, T12, ..., T1N). The second drive module 30 includes a second drive transformer T2, which includes a second primary winding T20 and N second secondary windings (T21, T22, ..., T2N).

[0070] The first drive transformer T1 and the second drive transformer T2 in FIG. 5 are, for example, multi-winding transformers, and a series drive method in which one multi-winding transformer (N identical secondary windings) is replaced with N auto-transformers is also included in the scope of protection of this application.

[0071] 5, there are N switch modules 40, and each switch module 40 includes a conduction circuit 41 and a blocking circuit 42. The N conduction circuits 41 are connected to the N first secondary windings in a one-to-one correspondence, and the N blocking circuits 42 are connected to the N second secondary windings in a one-to-one correspondence. VI11, VI12, ..., VI1N in FIG. 5 correspond to the first drive input terminals of the N conduction circuits 41, and VI21, VI22, ..., VI2N correspond to the second drive input terminals of the N blocking circuits 42.

[0072] The distribution of the windings and the order of connection to the switch module 40 in FIG. 5 are not unique, and any connection method that can realize series driving of N (N≧2) power electronic devices is within the scope of protection of the present application.

[0073] 5, the power electronic device 50 includes a series combination ΣMi (i=1, 2, ..., N, N≧2) of power electronic devices. The N power electronic devices Mi are connected to the N switch modules 40 in one-to-one correspondence.

[0074] In the example shown in FIG. 5, the specific circuit topology structure of each switch module 40 is the same as the circuit topology structure of the switch module 40 shown in FIG. 4, so a redundant description will not be given here.

[0075] 5 , the specific operating principle is as follows: the edge control generating module 10 outputs a first edge control signal to the gate of the third switch tube S1, turning on the third switch tube S1, and applying the voltage between the power supply circuit and the reference ground to both ends of the first primary winding T10 of the first drive transformer T1; the N first secondary windings (T11, T12, ..., T1N) of the first drive transformer T1 respectively detect edge voltages corresponding to the first edge control signal from the first primary winding T10 and output N first edge drive signals, which are respectively applied to the corresponding conduction circuits 41 of the power electronic devices Mi (i=1, 2, ..., N) and used to turn on the power electronic devices Mi (i=1, 2, ..., N), thereby realizing the conduction control of the series combination of power electronic devices. The edge control generating module 10 outputs the second edge control signal to the gate of the fourth switch tube S2, turning on the fourth switch tube S2 and applying the voltage between the power supply circuit and the reference ground to both ends of the second primary winding T20 of the second driving transformer T2. The N second secondary windings (T21, T22, ..., T2N) of the second driving transformer T2 respectively detect the edge voltages corresponding to the second edge control signal from the second primary winding T20 and output N second edge driving signals to act on the shutoff circuits 42 of the power electronic devices Mi (i=1, 2, ..., N) and turn off the power electronic devices Mi (i=1, 2, ..., N). The on / off operation process of each power electronic device Mi (i=1, 2, ..., N) is described in detail in Example 1 and will not be repeated here.

[0076] For the waveform relationship between the ON signal of each power electronic device Mi (i=1, 2, ..., N) in FIG. 5, the first edge control signal, and the second edge control signal, see FIG. 6. In FIG. 6, T on denotes the on-time of the power electronic device, and T off indicates the off-time of the power electronic device. As shown in Fig. 6, the on-time T of each power electronic device Mi (i = 1, 2, ..., N) onis also determined by the time interval between receiving the first edge drive signal and the second edge drive signal.

[0077] In one specific example of the power electronic devices described in Example 2 that are connected in series and driven, devices with the same functions in the drive circuit topology are integrated into a single package member to achieve better consistency in series drive. For example, the first diode D3 of the N conduction circuits 41 is integrated into a single package member. The second diode D4 of the N interruption circuits 42 is integrated into a single package member. The first switch tube S3 of the N interruption circuits 42 is integrated into a single package member. Or, the second PMOS switch tube S4 of the N interruption circuits 42 is integrated into a single package member.

[0078] In some embodiments, Figure 7 shows a circuit structure of a driver configured to realize series driving of two power electronic devices. In the example shown in Figure 7, the first diodes (D31, D32) of the two conduction circuits 41 are integrated into one package member H.

[0079] 7 , when the first secondary windings T11 and T12 of the first drive transformer T1 are connected to a conduction circuit 41 for driving the power electronic devices M1 and M2, the dotted terminal of the first secondary winding T11 and the dotted terminal of the first secondary winding T12 of the first drive transformer T1 are connected in a one-to-one correspondence to two input terminals of the two-in-one package H, two first diodes D31 and D32 are integrated and packaged inside the two-in-one package H, and the two output terminals of the two-in-one package H are further connected to one ends of two first resistors R21 and R22, respectively. Note that the device connection method and conduction / cutoff process within the conduction circuit 41 / cutoff circuit 42 of a single power electronic device Mi are described in detail in Example 1, and will not be described again here.

[0080] Note that the embodiment described in FIG. 7 uses diode D3 in the conduction circuit as an example to illustrate one embodiment of an integrated device realizing series drive according to Example 2. In the series drive method based on the basic circuit topology of edge-driven isolation described in Example 1 of the present application, device integration embodiments include, but are not limited to, integrating diodes D3 of N (N≧2) conduction circuits into a single package, integrating diodes D4 of N (N≧2) interruption circuits into a single package, integrating switch tubes S3 of N (N≧2) interruption circuits into a single package, and integrating PMOS field switch tubes S4 of N (N≧2) interruption circuits into a single package, or any number of devices integrated and packaged, all of which are within the scope of protection of the present application. In Example 2 of the present application, in the series drive method based on the basic circuit topology of edge-driven isolation described in Example 1, device integration embodiments are not limited to specific device integration packages, and any package capable of integrating N devices having the same function is within the scope of protection of the present application.

[0081] The above content and scope of protection of Example 1 of the present application are all applicable to Example 2, and all other embodiments that a person skilled in the art can obtain without any creative efforts fall within the scope of protection of the present application.

[0082] When realizing the mode of serially driving the power electronic devices described in the second embodiment, in addition to the mode of integrated devices, the mode of discrete devices is also possible.

[0083] For example, Fig. 8 shows a drive device that uses discrete devices to drive power electronic devices in series. Unlike the example shown in Fig. 7, in the example shown in Fig. 8, all devices with the same function between two conduction circuits 41 have independent packages, and similarly, all devices with the same function between two interruption circuits 42 have independent packages.

[0084] Note that the embodiments described in FIGS. 5, 7, and 8 are only some of the embodiments of the present application and do not include all of the embodiments described in Example 2. For example, a series driving method using N autotransformers instead of one multi-winding transformer (N identical secondary windings) also falls within the scope of protection of the present application. The winding distribution and connection order with the drive circuit in FIGS. 5, 7, and 8 are not unique, and any connection method that can realize series driving of N (N≧2) power electronic devices falls within the scope of protection of the present application. The series driving method based on the edge-isolated drive topology described in Example 1 of Example 2 can be implemented using discrete devices in addition to integrated devices. The above content and scope of protection of Example 1 of the present application are all applicable to Example 2, and all other embodiments that a person skilled in the art can derive without requiring creative effort fall within the scope of protection of the present application.

[0085] Example 3 In the basic circuit topology adopted by the driving device according to the embodiment of the present application, the conduction and cutoff of the power electronic device M1 are controlled by two driving modules, respectively, and these features in its configuration and function make it applicable to applications such as complementary driving, for example, half-bridge, full-bridge, etc. Based on this, the present application proposes a complementary driving form based on the basic circuit topology described in the first embodiment.

[0086] As shown in FIG. 9, FIG. 9 is a schematic diagram of the circuit configuration of another driving device according to an embodiment of the present application.

[0087] 9, the switch module 40 includes a first switch module 40a and a second switch module 40b, each of which includes the above-mentioned conducting circuit and interrupting circuit. The first drive input terminal VI11 of the first switch module 40a is connected to the first drive module 20, and the second drive input terminal VI21 of the first switch module 40a is connected to the second drive module 30. The first drive input terminal VI12 of the second switch module 40b is connected to the second drive module 30, and the second drive input terminal VI22 of the second switch module 40b is connected to the first drive module 20. A power electronic device M1 is connected to the first switch module 40a, and a power electronic device M2 is connected to the second switch module 40b.

[0088] The circuit topology structures of the conduction circuits and interruption circuits of the first switch module 40a and the second switch module 40b shown in FIG. 9 are identical to the circuit topology structures of the conduction circuits and interruption circuits in the example shown in FIG. 4, and will not be described again here.

[0089] The first driving module 20 includes a first driving transformer T1, which includes a first primary winding T10 and at least two first secondary windings (T11, T12, ...), and the second driving module 30 includes a second driving transformer T2, which includes a second primary winding T20 and at least two second secondary windings (T21, T22, ...).

[0090] 9, the first switch module 40a has a first drive input terminal VI11 of its conduction circuit connected to the first secondary winding T11 and a second drive input terminal VI21 of its interruption circuit connected to the second secondary winding T21. The second switch module 40b has a first drive input terminal VI12 of its conduction circuit connected to the second secondary winding T22 and a second drive input terminal VI22 of its interruption circuit connected to the first secondary winding T12. The first switch module 40a is connected to the power electronic device M1, and the second switch module 40b is connected to the power electronic device M2.

[0091] The driver shown in Figure 9 can realize the XOR gate logic function of a digital circuit (also known as "XOR" driving technology). The specific operating processes of the conduction circuit 41 and the cutoff circuit 42 of a single power electronic device Mi (i = 1, 2) have been described in detail in Example 1, so they will not be repeated here.

[0092] When the edge control generation module 10 alternately outputs the first edge control signal and the second edge control signal at a predetermined interval, the waveform relationship between the ON signals of the power electronic device M1 and the power electronic device M2 and the first edge control signal and the second edge control signal in the example shown in FIG. 9 is shown in FIG. 10. In FIG. 10, T on denotes the on-time of the power electronic device, and T off indicates the off time of the power electronic device. As shown in Figure 10, the on signals of the power electronic devices M1 and M2 have a complementary waveform relationship, that is, when M1 is on, M2 is off, and when M1 is off, M2 is on.

[0093] Dead time between the on signals of M1 and M2 (T dead) may be adjusted by the first resistor R2 and the second resistor R3 in Fig. 4. A resistor may be further connected in series between the dotted terminals of the secondary windings of the drive transformers T1 and T2 and the anode of the first diode D3 in the conduction circuit 41 of each power electronic device to adjust the dead time.

[0094] The operating principle of the drive device shown in FIG. 9 is as follows.

[0095] The edge control generating module 10 outputs a first edge control signal to the gate of the third switch tube S1, turning on the third switch tube S1 and applying the voltage between the power supply circuit and the reference ground to both ends of the first primary winding T10 of the first driving transformer T1. The two first secondary windings T11 and T12 of T1 respectively detect the edge voltage corresponding to the first edge control signal from the first primary winding T10 and output first edge driving signals. The first edge driving signal output by T11 acts on the conduction circuit 41 of the power electronic device M1, turning on the power electronic device M1. The first edge driving signal output by T12 acts on the cutoff circuit 42 of the power electronic device M2, turning off the power electronic device M2. Here, the first edge control signal output by the edge control generating module 10 has multiple functions, allowing M1 to be turned on and M2 to be cut off simultaneously.

[0096] The edge control generating module 10 outputs a second edge control signal to the gate of the fourth switch tube S2, turning on the fourth switch tube S2 and applying the voltage between the power supply circuit and the reference ground to both ends of the second primary winding T20 of the second driving transformer T2. The two second secondary windings T21 and T22 of the second driving transformer T2 respectively detect the edge voltage corresponding to the second edge control signal from the second primary winding T20 and output second edge driving signals. The second edge driving signal output by T21 acts on the interruption circuit 42 of the power electronic device M1 to interrupt the power electronic device M1, and the second edge driving signal output by T22 acts on the conduction circuit 41 of the power electronic device M2 to turn on the power electronic device M2. Here, the second edge control signal output by the edge control generating module 10 has multiple functions, simultaneously realizing the conduction of M2 and the interruption of M1.

[0097] 9, the third diode D1 may be a reset diode, providing a discharge circuit for the first drive transformer T1 after the first edge control signal is removed and the third switch tube S1 is turned off. Similarly, the fourth diode D2 may be a reset diode, providing a discharge circuit for the second drive transformer T2 after the second edge control signal is removed and the fourth switch tube S2 is turned off. The third diode D1 and the fourth diode D2 reset the driver circuit, preventing both M1 and M2 from turning on.

[0098] Note that the embodiment described in FIG. 9 is only a portion of the embodiments of the present application, and does not cover all of the embodiments of Example 3. For example, FIG. 9 illustrates a multi-winding transformer as an example. A complementary driving method in which two auto-transformers are used instead of one multi-winding transformer (two identical secondary windings) also falls within the scope of protection of the present application. In FIG. 9, the source of M1 and the drain of M2 may or may not be connected together. The winding distribution and the connection order of the driving circuits in FIG. 9 are not unique; any connection method that can achieve complementary driving of two power electronic devices falls within the scope of protection of the present application. The above content and scope of protection of Example 1 of the present application are all applicable to Example 3, and all other embodiments that a person skilled in the art can derive without creative effort fall within the scope of protection of the present application.

[0099] Example 4 As shown in FIG. 11, FIG. 11 is a schematic diagram of the circuit configuration of another driving device according to an embodiment of the present invention.

[0100] 11, the switch modules 40 include a first switch module 40a and a second switch module 40b, and there are a plurality of first switch modules 40a and a plurality of second switch modules 40b. The first drive input terminals of the first switch modules 40a are connected to the first drive module 20, and the second drive input terminals of the first switch modules 40a are connected to the second drive module 30. The first drive input terminals of the second switch modules 40b are connected to the second drive module 30, and the second drive input terminals of the second switch modules 40b are connected to the first drive module 20.

[0101] The circuit topology structures of the conduction circuits and interruption circuits of the first switch module 40a and the second switch module 40b in FIG. 11 are the same as the circuit topology structures of the conduction circuits and interruption circuits in the example shown in FIG. 4, and will not be described again here.

[0102] 11 includes a first power electronic device combination and a second power electronic device combination, each of which includes at least two series-connected power electronic devices. For example, the first power electronic device combination includes power electronic devices M1 and M2, and the second power electronic device combination includes power electronic devices M3 and M4. The power electronic devices M1 and M2 in the first power electronic device combination are connected to a first switch module 40a, and the power electronic devices M3 and M4 in the second power electronic device combination are connected to a second switch module 40b.

[0103] 11 , the first driving module 20 includes a first driving transformer T1, which includes a first primary winding T10 and first secondary windings T11, T12, T13, and T14. The second driving module 30 includes a second driving transformer T2, which includes a second primary winding T20 and second secondary windings T21, T22, T23, and T24. The first driving input terminals VI11 and VI12 of the conducting circuits 41 of the two first switch modules 40a are connected to the first secondary windings T11 and T12. The second driving input terminals VI21 and VI22 of the interrupting circuits 42 of the two first switch modules 40a are connected to the second secondary windings T21 and T22. The first drive input terminals VI13, VI14 of the conduction circuits 41 of the two second switch modules 40b are connected to correspond to the second secondary windings T23, T24. The second drive input terminals VI23, VI24 of the interruption circuits 42 of the two second switch modules 40b are connected to correspond to the first secondary windings T13, T14.

[0104] The operating principle of the drive device shown in FIG. 11 is as follows.

[0105] The edge control generating module 10 outputs a first edge control signal to the gate of the third switch tube S1 to turn on the third switch tube S1, and applies the voltage between the power supply circuit and the reference ground to both ends of the first primary winding T10 of the first driving transformer T1. The first secondary windings T11, T12, T13, and T14 of T1 respectively detect the edge voltage corresponding to the first edge control signal from the first primary winding T10 and output first edge driving signals. The first edge driving signals output by T11 and T12 act on the conduction circuits 41 of the power electronic devices M1 and M2 to turn on the power electronic devices M1 and M2. The first edge driving signals output by T13 and T14 act on the cutoff circuits 42 of the power electronic devices M3 and M4 to cut off the power electronic devices M3 and M4. Here, the first edge control signal output by the edge control generating module 10 has multiple functions to simultaneously realize the conduction of M1 and M2 and the interruption of M3 and M4.

[0106] The edge control generating module 10 outputs the second edge control signal to the gate of the fourth switch tube S2 to turn on the fourth switch tube S2, and applies the voltage between the power supply circuit and the reference ground to both ends of the second primary winding T20 of the second driving transformer T2. The second secondary windings T21, T22, T23, and T24 of the second driving transformer T2 respectively detect the edge voltage corresponding to the second edge control signal from the second primary winding T20 and respectively output second edge driving signals. The second edge driving signals output by T21 and T22 act on the interruption circuits 42 of the power electronic devices M1 and M2 to interrupt the power electronic devices M1 and M2. The second edge driving signals output by T23 and T24 act on the conduction circuits 41 of the power electronic devices M3 and M4 to turn on the power electronic devices M3 and M4. Here, the second edge control signal output by the edge control generating module 10 achieves multiple functions of simultaneously realizing the conduction of M3 and M4 and the interruption of M1 and M2.

[0107] The waveform relationships between the ON signals of the power electronic devices M1, M2, M3, and M4 and the first edge control signal and the second edge control signal in the example shown in FIG. 11 are shown in FIG. 12. The dead time (T dead ) is adjusted by the first resistor R2 and the second resistor R3 in Fig. 4. A resistor may be further connected in series between the dotted terminals of the secondary windings of the drive transformers T1 and T2 and the anode of the first diode D3 in the conduction circuit 41 of each power electronic device to adjust the dead time.

[0108] 11, the third diode D1 may be a reset diode that provides a discharge circuit for the first drive transformer T1 after the first edge control signal is removed and the third switch tube S1 is turned off. Similarly, the fourth diode D2 may be a reset diode that provides a discharge circuit for the second drive transformer T2 after the second edge control signal is removed and the fourth switch tube S2 is turned off. The third and fourth diodes D1 and D2 reset the driver circuit, preventing any of M1, M2, M3, and M4 from turning on.

[0109] The embodiment of Example 4 combines the serial driving function of Example 2 and the complementary driving function of Example 3.

[0110] Note that the embodiment described in FIG. 11 is only a part of the embodiments of the present application and does not include all of the embodiments of Example 4. For example, while FIG. 11 illustrates the driving of four power electronic devices, the function integration method 2 of Example 4 of the present application includes, but is not limited to, driving four power electronic devices. It can also be applied to driving 2N (N≧2) power electronic devices (each of the N devices is in a series driving relationship, and a combination of N series-driven devices and another combination of N series-driven devices are in a complementary driving relationship). In Example 4 of the present application, the first and second edge-driven transformers T1 and T2 each have 2N secondary windings, and the N secondary windings are connected to the conduction circuits of the N series-driven devices, respectively, and the remaining N secondary windings are connected to the interruption circuits of the other combinations of N series-driven devices, respectively. The distribution of the windings and the order of connection to the driving circuits in FIG. 11 are not unique. Any connection method that can realize driving of 2N (N≧2) power electronic devices by function integration driving method 2 falls within the scope of protection of the present application. 11, the source of M2 and the drain of M3 may be connected together, but in reality, the source of M2 and the drain of M3 may not be connected together, and in an application for functionally integrated driving of 2N (N≧2) power electronic devices, the source of the last device among N series-driven devices and the drain of the first device among another N series-driven devices may or may not be connected together. The above content and scope of protection of Examples 1, 2, and 3 of the present application are all applicable to Example 4, and all other embodiments that a person skilled in the art can derive without requiring creative effort fall within the scope of protection of the present application.

[0111] In addition, since the third and fourth embodiments of the present application relate to complementary driving, the durations of the two first and second edge control signals from the edge control generating circuit are the same. On the other hand, in the basic circuit topology of the serial driving method described in the second embodiment and the edge isolation driving described in the first embodiment, the durations of the first and second edge control signals may be the same or different, and generally, the duration of the first edge control signal is longer than the duration of the second edge control signal.

[0112] In the edge-isolated driving method described in the embodiments of the present application, the duration of the edge control signal used to turn on / off the power electronic devices Mi (i=1, 2, ..., N) is on the order of nanoseconds, and the energy transmitted by the driving transformers is small. Therefore, the first driving transformer T1 and the second driving transformer T2 described in embodiments 1 to 4 can be very small transformers, and may be wire-wound transformers or PCB planar transformers. Note that any transformer type (e.g., a conventional wire-wound transformer) that can realize the function of the edge-isolated driving circuit of the present application falls within the scope of protection of the present application.

[0113] It should be noted that this application focuses on the description of various embodiments, and for parts that are not described or explained in detail in one embodiment, reference may be made to related descriptions of other embodiments.

[0114] An embodiment of the present application also provides an electronic device including the drive device according to any of the above embodiments.

[0115] In an electronic device according to an embodiment of the present application, an edge control generating module 10 outputs a first edge control signal and a second edge control signal at a predetermined interval. The first edge control signal controls a first driving module 20 to output a first edge driving signal to a switch module 40. The second edge control signal controls a second driving module 30 to output a second edge driving signal to the switch module 40. The switch module 40 then controls the first and second edge driving signals to turn on and off a power electronic device 50. The power electronic device is continuously turned on within the time interval between the rising edge of the first and second edge driving signals. This allows the first and second edge driving signals to turn on and off the driving signal for the power electronic device. In this embodiment of the present application, there is no need to provide a continuously high level to keep the power electronic device 50 turned on. This reduces the energy required to continuously keep the power electronic device on, reduces driving losses, and is advantageous for reducing the volume of the driving device.

[0116] In an embodiment of the present application, an edge control generating module outputs a first edge control signal and a second edge control signal at a predetermined interval, the first edge control signal controls the first driving module to output the first edge driving signal to the switch module, and the second edge control signal controls the second driving module to output the second edge driving signal to the switch module, the switch module turns on and off a power electronic device by controlling the first edge driving signal and the second edge driving signal, and the power electronic device is continuously turned on within the time interval between the rising edge of the first edge driving signal and the rising edge of the second edge driving signal, thereby realizing the driving signal of the power electronic device being turned on or off by the first edge driving signal and the second edge driving signal. In an aspect according to an embodiment of the present application, it is not necessary to provide a continuously maintained high level to keep the power electronic device turned on, so less energy is required to continuously keep the power electronic device on, driving loss is reduced, and it is advantageous for reducing the volume of the driving device.

[0117] Although several embodiments of the present application have been specifically described above, the present application is not limited to the above-described embodiments, and a person skilled in the art may make various equivalent modifications and substitutions without departing from the spirit of the present application, and all of these equivalent modifications and substitutions are intended to be included within the scope limited by the claims of the present application.

Claims

1. an edge control generating module configured to output a first edge control signal and a second edge control signal at predetermined intervals; a first drive module configured to receive the first edge control signal from the edge control generation module and output at least one first edge drive signal based on the first edge control signal; a second drive module configured to receive the second edge control signal from the edge control generation module and output at least one second edge drive signal based on the second edge control signal; at least one switch module configured to receive the first edge drive signal from the first drive module, receive the second edge drive signal from the second drive module, and turn on or off a power electronic device based on the first edge drive signal and the second edge drive signal, The switch module includes a conducting circuit and a blocking circuit; the conduction circuit includes a first diode and a first drive input terminal, an anode of the first diode is connected to the first drive input terminal, and a cathode of the first diode is connected to the power electronic device; the interruption circuit includes a first switch tube, a second switch tube, and a second drive input terminal, a gate of the first switch tube is connected to the second drive input terminal, a drain of the first switch tube is connected to the gate of the second switch tube, and a drain of the second switch tube is connected to the power electronic device; A driving device, wherein the first driving input terminal is used to receive the first edge driving signal from the first driving module and the second driving input terminal is used to receive the second edge driving signal from the second driving module, or the first driving input terminal is used to receive the second edge driving signal from the second driving module and the second driving input terminal is used to receive the first edge driving signal from the first driving module.

2. The conduction circuit further includes a first resistor, the first resistor being connected to the cathode of the first diode. and the power electronic device, The drive apparatus according to claim 1 , wherein the interruption circuit further includes a second resistor, the second resistor being connected between the source of the second switch tube and the power electronic device.

3. 2. The driving device according to claim 1, wherein the interruption circuit further includes a second diode and an RC circuit, the RC circuit being connected between the drain and source of the first switch tube, the anode of the second diode being connected to the first driving input terminal, and the cathode of the second diode being connected to the RC circuit.

4. The switch module includes a first switch module and a second switch module, and each of the first switch module and the second switch module includes the conducting circuit and the interrupting circuit; The first drive input terminal of the first switch module is connected to the first drive module, and the second drive input terminal of the first switch module is connected to the second drive module; The drive device according to claim 1 , wherein the first drive input terminal of the second switch module is connected to the second drive module, and the second drive input terminal of the second switch module is connected to the first drive module.

5. 2. The driving device of claim 1, wherein the first driving module includes a first driving transformer, the first driving transformer including a first primary winding and at least one first secondary winding, the first primary winding being used to receive the first edge control signal from an edge control generating module, and each of the first secondary windings being used to output one first edge driving signal based on the first edge control signal.

6. a third switch tube and a third diode are provided between the edge control generating module and the first driving transformer, the gate of the third switch tube is connected to the first output terminal of the edge control generating module, the anode of the third diode is connected to the drain of the third switch tube, and the cathode of the third diode is connected to the dot-side terminal of the first primary winding; The edge control generation module includes an edge control generation chip and a first driving capability enhancement circuit; the edge control generating chip is used to output the first edge control signal to the first driving capability enhancing circuit; 6. The driving device according to claim 5, wherein the first driving capability enhancing circuit enhances the first edge control signal and outputs the processed first edge control signal to the gate of the third switch tube.

7. 2. The driving device of claim 1, wherein the second driving module includes a second driving transformer, the second driving transformer including a second primary winding and at least one second secondary winding, the second primary winding being used to receive the second edge control signal from the edge control generating module, and each of the second secondary windings being used to output one second edge driving signal based on the second edge control signal.

8. a fourth switch tube and a fourth diode are provided between the edge control generating module and the second driving transformer, the gate of the fourth switch tube is connected to the second output terminal of the edge control generating module, the anode of the fourth diode is connected to the drain of the fourth switch tube, and the cathode of the fourth diode is connected to the dot-side terminal of the second primary winding; The edge control generating module includes an edge control generating chip and a second driving capability enhancing circuit; the edge control generating chip is used to output the second edge control signal to the second driving capability enhancing circuit; 8. The driving device according to claim 7, wherein the second driving capability enhancing circuit enhances the second edge control signal and outputs the processed second edge control signal to the gate of the fourth switch tube.

9. An electronic device comprising the drive device according to any one of claims 1 to 8.

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