Driving circuit and driving device of transistor

Abstract

The invention discloses a driving circuit and a driving device of a transistor. The driving circuit of the transistor at least comprises a first driving unit and a first voltage holding unit, the first driving unit comprises a first end and a second end; the first end is electrically connected with a driving signal end, and the second end is electrically connected with one end of the first voltage holding unit; the other end of the first voltage holding unit is electrically connected with the control electrode of the transistor; wherein the first driving unit provides a first driving signal for the control electrode through the first voltage holding unit for the first time, so that the transistor is in a conducting state; after the transistor is switched from the on state to the off state, the first voltage holding unit is used for controlling the second end to be maintained at the first holding voltage. According to the technical scheme, the current waveform of the control electrode of the transistor can be optimized, and current and voltage oscillation generated in the conduction process of the transistor is reduced.

Description

Technical Field

[0001] This invention relates to the field of switch driving technology, and more particularly to a transistor driving circuit and driving device. Background Technology

[0002] A field-effect transistor (FET) is a semiconductor device widely used in analog and digital circuits. For example, in digital circuits, FETs can be used as switches, and FET driver circuits are used to turn on FETs.

[0003] Previously, the driving circuit of a field-effect transistor (FET) included a driving resistor and a capacitor. By adjusting the resistance value of the driving resistor, the conduction speed of the FET could be controlled. However, the conduction process of a FET can be divided into different stages, and the FET driving circuit in the prior art cannot meet the requirement of adjusting the different stages individually. Summary of the Invention

[0004] This invention provides a transistor driving circuit and driving device that can optimize the current waveform of the control electrode, reduce current oscillations generated during transistor conduction, and effectively suppress electromagnetic interference.

[0005] In a first aspect, the present invention provides a transistor driving circuit, comprising at least: a first driving unit and a first voltage holding unit;

[0006] The first driving unit includes a first terminal and a second terminal; the first terminal is electrically connected to a driving signal terminal, and the second terminal is electrically connected to one end of the first voltage holding unit; the other end of the first voltage holding unit is electrically connected to the control electrode of the transistor.

[0007] Specifically, when the first driving unit first provides a first driving signal to the control electrode through the first voltage holding unit, causing the transistor to be in a conducting state; after the transistor switches from the conducting state to the de-conducting state, the first voltage holding unit is used to control the second terminal to maintain a first holding voltage.

[0008] Optionally, the first voltage holding unit includes: a first capacitor and a first diode;

[0009] One end of the first capacitor is electrically connected to the second end, the other end of the first capacitor is electrically connected to the anode of the first diode, and the cathode of the first diode is electrically connected to the control electrode.

[0010] Optionally, the first driving unit includes: a first resistor;

[0011] One end of the first resistor is electrically connected to the drive signal terminal, and the other end of the first resistor is electrically connected to one end of the first capacitor.

[0012] Optionally, the drive circuit may also include: a holding resistor;

[0013] The sustaining resistor is electrically connected to both the drive signal terminal and the control electrode.

[0014] Optionally, the driving circuit may further include: a second driving unit and a second voltage holding unit;

[0015] The second drive unit includes a third terminal and a fourth terminal; the third terminal is electrically connected to the drive signal terminal, and the fourth terminal is electrically connected to one end of the second voltage holding unit; the other end of the second voltage holding unit is electrically connected to the control electrode.

[0016] Specifically, when the second driving unit first provides a second driving signal to the control electrode through the second voltage holding unit, the transistor is in an off state; after the transistor switches from the off state to the on state, the second voltage holding unit is used to control the fourth terminal to maintain the second holding voltage.

[0017] Optionally, the second voltage holding unit includes: a second capacitor and a second diode;

[0018] One end of the second capacitor is electrically connected to the fourth terminal, the other end of the second capacitor is electrically connected to the cathode of the second diode, and the anode of the second diode is electrically connected to the control electrode.

[0019] Optionally, the second driving unit includes: a second resistor;

[0020] One end of the second resistor is electrically connected to the drive signal terminal, and the other end of the second resistor is electrically connected to one end of the second capacitor.

[0021] Optionally, the drive circuit may also include: a protection resistor;

[0022] The protective resistor is electrically connected to the control electrode and the second electrode of the transistor, respectively.

[0023] Optionally, the driving circuit may also include: a third capacitor;

[0024] The third capacitor is electrically connected to the control electrode and the second electrode of the transistor.

[0025] Based on the same inventive concept, the present invention also provides a transistor driving device, comprising: a driving signal providing module and a driving circuit for the transistor described in the first aspect;

[0026] The drive signal providing module is electrically connected to the drive circuit.

[0027] The technical solution provided by this invention involves setting a first voltage holding unit between a first driving unit and the control electrode of a transistor. The first driving unit provides a first driving signal to the control electrode through the first voltage holding unit for the first time, causing the transistor to be in a conducting state. After the transistor switches from the conducting state to the de-conducting state, the first voltage holding unit controls the second terminal to maintain a first holding voltage. Consequently, when the first driving unit receives the first driving signal again, the voltage difference between the first driving signal and the first holding voltage decreases, thereby reducing the gate current flowing through the control electrode, smoothing current spikes, optimizing the current waveform of the control electrode, reducing current and voltage oscillations generated during transistor conduction, and effectively suppressing electromagnetic interference. Attached Figure Description

[0028] Figure 1 A schematic diagram of a transistor driving circuit provided in an embodiment of the present invention;

[0029] Figure 2 A waveform diagram of the control electrode current during the conduction process of a transistor is provided for related technologies;

[0030] Figure 3 This invention provides a waveform diagram of the control electrode current during the conduction process of a transistor.

[0031] Figure 4 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of another transistor driving circuit provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention;

[0034] Figure 7 A waveform diagram of the control electrode current of a transistor is provided for related technologies;

[0035] Figure 8 A control electrode current waveform diagram of a transistor provided in an embodiment of the present invention;

[0036] Figure 9 A schematic diagram of a transistor driving circuit provided in an embodiment of the present invention;

[0037] Figure 10 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of a transistor driving device provided in an embodiment of the present invention. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] Figure 1 This is a schematic diagram of a transistor driving circuit provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the transistor driving circuit 100 includes at least a first driving unit 11 and a first voltage holding unit 12. The first driving unit 11 includes a first terminal and a second terminal; the first terminal is electrically connected to the driving signal terminal Vdriver, and the second terminal is electrically connected to one end of the first voltage holding unit 12; the other end of the first voltage holding unit 12 is electrically connected to the control electrode G of the transistor Q.

[0041] Specifically, the first driving unit 11 provides a first driving signal to the control electrode through the first voltage holding unit 12 for the first time, so that the transistor Q is in the conducting state; after the transistor Q switches from the conducting state to the off state, the first voltage holding unit 12 is used to control the second terminal to maintain the first holding voltage U1.

[0042] The first driving unit 11 and the first voltage holding unit 12 may include resistors and / or capacitors, which can be configured according to actual needs, and are not specifically limited here.

[0043] Specifically, the drive signal terminal Vdriver can receive a drive signal, and the voltage value of the drive signal can be a high-level voltage value or a low-level voltage value. When the drive signal provided by the drive signal terminal Vdriver is a first drive signal that controls the transistor Q to turn on, the first drive unit 11 can transmit the first drive signal of the drive signal terminal Vdriver to the first voltage holding unit 12, and then the first voltage holding unit 12 transmits it to the control electrode Q of the transistor Q.

[0044] For ease of explanation, we will use an N-type transistor Q as an example. Figure 2 This invention provides a waveform diagram of the control electrode current during the conduction process of a transistor, which is provided for related technologies. However, the drive circuit for controlling transistor conduction in related technologies only includes a first drive unit 11 and does not include the first voltage holding unit 12 as described in this invention. Figure 2As shown, when transistor Q is in the off state, a transient current spike I is generated in the electrical connection path between the first driving unit 11 and the control electrode G at the instant the first driving unit 11 provides the first driving signal to the control electrode G. G ,pluse, the current spike I G The addition may cause problems such as current and voltage oscillations in transistor Q.

[0045] This invention establishes a first voltage holding unit 12 between the first driving unit 11 and the control electrode G. When the transistor Q is in the off state, after the first driving unit 11 receives the first driving signal for the first time, it transmits the first driving signal to the control electrode G through the first voltage holding unit 12. During this process, a current spike I is still generated in the current flowing through the control electrode G. G ,pluse, as Figure 2 As shown. However, after transistor Q switches from the on state to the off state, the first voltage holding unit 12 can control the second terminal of the first driving unit 11 to maintain the first holding voltage U1, avoiding the second driving signal of the control electrode G from affecting the voltage signal of the second terminal of the first driving unit 11. Therefore, when the first driving unit 11 receives the first driving signal again, since the second terminal of the first driving unit 11 maintains the first holding voltage U1, the transient voltage difference generated on the first driving unit 11 can be reduced, thereby reducing the current flowing through the first driving unit 11 and the control electrode G. Figure 3 As shown, the peak current is smoothed, the conduction current waveform of the control electrode G is optimized, and the current and voltage oscillations generated during the conduction of transistor G are reduced.

[0046] The technical solution provided by this invention involves setting a first voltage holding unit between a first driving unit and the control electrode of a transistor. The first driving unit provides a first driving signal to the control electrode through the first voltage holding unit for the first time, causing the transistor to be in a conducting state. After the transistor switches from the conducting state to the de-conducting state, the first voltage holding unit controls the second terminal to maintain a first holding voltage. Consequently, when the first driving unit receives the first driving signal again, the voltage difference between the first driving signal and the first holding voltage decreases, thereby reducing the gate current flowing through the control electrode, avoiding current spikes, optimizing the current waveform of the control electrode, reducing current and voltage oscillations during transistor conduction, and effectively suppressing electromagnetic interference.

[0047] It is understood that when the first driving unit 11 first provides a first driving signal to the control electrode G through the first voltage holding unit 12, causing the transistor Q to be in the conducting state; after the transistor Q switches from the conducting state to the off state, the first voltage holding unit 12 can control the second terminal to maintain the first holding voltage U1. The specific structure of the first voltage holding unit 12 is not limited in this embodiment. In an optional embodiment, Figure 4 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention is shown below. Figure 4 As shown, the first voltage holding unit 12 includes a first capacitor C1 and a first diode D1; one end of the first capacitor C1 is electrically connected to the second terminal, the other end of the first capacitor C1 is electrically connected to the anode of the first diode D1, the cathode of the first diode D1 is electrically connected to the control electrode G, and the cathode of the first diode D1 is electrically connected to the control electrode G.

[0048] The first diode D1 can be a point contact diode, a surface contact diode, or a planar diode, etc. The capacitance value of the first capacitor C1 can be set according to actual needs, and no specific limitation is made here.

[0049] Specifically, when the first drive signal is provided at the drive signal terminal Vdriver, the first drive signal can be quickly transmitted to the control electrode G through the first drive unit 11, the first capacitor C1, and the first diode D1, allowing the voltage of the control electrode G to rise rapidly, reducing the turn-on delay time and voltage rise time, and helping to reduce turn-on losses. When the control electrode voltage Vgs is fully charged and stabilized, the first capacitor C1 is also fully charged, and the voltage across the first capacitor C1 is equal to the voltage value of the first drive signal. When the transistor G switches from the current on state to the off state, the voltage value of the control electrode G will drop to zero or a negative voltage value. The unidirectional conductivity of the first diode D1 prevents the zero or negative voltage value of the control electrode G from being transmitted to the first capacitor C1 through the first diode D1, thereby maintaining a first holding voltage U1 across the first capacitor C1. When the first drive signal passes through the first drive unit 11 and the first capacitor C1 again, the instantaneous voltage difference generated on the first drive unit 11 will decrease, thereby reducing the current flowing through the first drive unit 11 and the control electrode G, reducing the peak current, and optimizing the current and voltage waveform.

[0050] In an alternative embodiment, reference continues. Figure 4 The first driving unit 11 includes a first resistor Ron. One end of the first resistor Ron is electrically connected to the driving signal terminal Vdriver, and the other end of the first resistor Ron is electrically connected to one end of the first capacitor C1.

[0051] The resistance value of the first resistor Ron can be set according to actual needs, and no specific limitation is made here.

[0052] Specifically, by setting a first resistor Ron and a first capacitor C1 connected in series, the first drive signal is provided at the initial moment of the drive signal terminal Vdriver. Since the first capacitor C1 has the characteristics of high impedance to DC signals and low impedance to AC signals, the first drive signal is quickly transmitted to the control electrode G through the first resistor Ron, the first capacitor C1 and the first voltage holding unit 12, so that the voltage of the control electrode G can rise quickly, reducing the turn-on delay time and rise time, which helps to reduce turn-on losses.

[0053] It is understandable that the positions of the first resistor Ron and the first capacitor C1 can be interchanged. That is, the first resistor Ron can be connected in series between the first capacitor C1 and the first diode D1, and can be set according to actual needs.

[0054] Optional, Figure 5 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention is shown below. Figure 5 As shown, the drive circuit 100 also includes a holding resistor Rss; the holding resistor Rss is electrically connected to the drive signal terminal Vdriver and the control terminal G, respectively.

[0055] The value of the holding resistor Rss can be set according to actual needs, and no specific limitation is made here.

[0056] Specifically, after the first driving signal controls the transistor Q to be reliably turned on through the first driving unit 11 and the first voltage holding unit 12, the first capacitor C1 is equivalent to an open circuit. At this time, the first driving signal can provide a small stable current to the control electrode G through the holding resistor Rss to maintain the level of the control electrode G, which helps to suppress high-frequency oscillation.

[0057] Optional, Figure 6 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention is shown below. Figure 6 As shown, the driving circuit 100 further includes a second driving unit 21 and a second voltage holding unit 22; the second driving unit 21 includes a third terminal and a fourth terminal; the third terminal is electrically connected to the driving signal terminal Vdriver, and the fourth terminal is electrically connected to one end of the second voltage holding unit 22; the other end of the second voltage holding unit 22 is electrically connected to the control electrode G.

[0058] Specifically, the second driving unit 21 provides a second driving signal to the control electrode through the second voltage holding unit 22 for the first time, so that the transistor Q is in the off state; after the transistor Q switches from the off state to the on state, the second voltage holding unit 22 is used to control the fourth terminal to maintain the second holding voltage U2.

[0059] The second driving unit 21 and the second voltage holding unit 22 may include resistors and / or capacitors, which can be configured according to actual needs, and are not specifically limited here.

[0060] Specifically, the drive signal terminal Vdriver can receive a drive signal, and the voltage value of the drive signal can be a high-level voltage value or a low-level voltage value. When the drive signal provided by the drive signal terminal Vdriver is a second drive signal that controls the transistor Q to turn off, the second drive unit 21 can transmit the second drive signal of the drive signal terminal Vdriver to the second voltage holding unit 22, and then the second voltage holding unit 22 transmits it to the control electrode Q of the transistor Q.

[0061] For ease of explanation, we will use an N-type transistor Q as an example. Figure 7 This provides a control electrode current waveform diagram for a transistor in related technologies. In these related technologies, the drive circuit for controlling the transistor's conduction only includes a second drive unit 21, and does not include the second voltage holding unit 22 found in this invention. For example... Figure 7 As shown, when transistor Q is in the on state, a transient current spike -I is generated in the electrical connection path between the second driving unit 21 and the control electrode G at the instant the second driving unit 21 provides the second driving signal to the control electrode G. G ,pluse, the current spike -I G The addition may cause problems such as voltage and current oscillations in transistor Q.

[0062] This invention establishes a second voltage holding unit 22 between the second driving unit 21 and the control electrode G. When transistor Q is in the on state, after the second driving unit 21 receives the second driving signal for the first time, the high-level signal of the control electrode G can be transmitted to the driving signal terminal Vdriver through the second voltage holding unit 22 and the second driving unit 21. During this process, a current spike -I will still occur in the current flowing through the control electrode G. G ,pluse, as Figure 7 As shown. However, after transistor Q switches from the off state to the on state, the second voltage holding unit 22 can control the fourth terminal of the second driving unit 21 to maintain the second holding voltage U2, avoiding the first driving signal of the control electrode G from affecting the voltage signal of the fourth terminal of the second driving unit 21. Therefore, when the second driving unit 21 receives the second driving signal again, since the fourth terminal of the second driving unit 21 maintains the second holding voltage U2, the transient voltage difference generated on the second driving unit 21 can be reduced, thereby reducing the current flowing through the second driving unit 21 and the control electrode G, such as... Figure 8As shown, to avoid current spikes, the conduction current waveform of the control electrode G is optimized, the voltage and current oscillations generated during the conduction of transistor G are reduced, and electromagnetic interference is effectively suppressed.

[0063] It is understood that when the second driving unit 21 first provides a second driving signal to the control electrode G through the second voltage holding unit 22, causing the transistor Q to be in the off state; after the transistor Q switches from the off state to the on state, the second voltage holding unit 22 can control the fourth terminal to maintain the second holding voltage U2. The specific structure of the second voltage holding unit 22 is not limited in this embodiment. In an optional embodiment, Figure 9 This is a schematic diagram of a transistor driving circuit provided in an embodiment of the present invention, as shown below. Figure 9 As shown, the second voltage holding unit 22 includes a second capacitor C2 and a second diode D2; one end of the second capacitor C2 is electrically connected to the fourth terminal, the other end of the second capacitor C2 is electrically connected to the cathode of the second diode D2, and the anode of the second diode D2 is electrically connected to the control electrode G.

[0064] The second diode D2 can be a point contact diode, a surface contact diode, or a planar diode, etc. The capacitance value of the second capacitor C2 can be set according to actual needs, and no specific limitation is made here.

[0065] Specifically, when the second drive signal is provided at the drive signal terminal Vdriver, the signal of the control electrode G can be quickly transmitted to the drive signal terminal Vdriver through the second drive unit 21, the second capacitor C2, and the second diode D2. This allows the voltage of the control electrode G to drop rapidly, reducing the disconnection delay time and voltage drop time, which helps to reduce disconnection losses. After the control electrode voltage Vgs decreases and stabilizes, the second capacitor C2 is also fully charged, and the voltage across the second capacitor C2 is equal to the voltage value of the second drive signal. When the transistor G switches from the current off state to the on state, the voltage value of the control electrode G will rise to a high level. The unidirectional conductivity of the second diode D2 prevents the high-level voltage value of the drive signal terminal Vdriver from being transmitted to the second capacitor C2 through the second diode D2, thereby maintaining a small second holding voltage U2 across the second capacitor C2. When the second drive signal is provided at the next drive signal terminal Vdriver, the electrical signal of the control electrode G passes through the second capacitor C2, the second capacitor C3 and the second drive unit 21 again, and the instantaneous voltage difference generated on the first resistor Roff will decrease, thereby reducing the current flowing through the second drive unit 21 and the control electrode G, avoiding the generation of peak current and optimizing the current waveform.

[0066] Optional, continue to refer to Figure 9The second driving unit 21 includes a second resistor Roff; one end of the second resistor Roff is electrically connected to the driving signal terminal Vdriver, and the other end of the second resistor Roff is electrically connected to one end of the second capacitor C2.

[0067] The resistance value of the second resistor Roff can be set according to actual needs, and no specific limitation is made here.

[0068] Specifically, by setting a second resistor Roff and a second capacitor C2 connected in series, at the initial moment when the second drive signal is provided at the drive signal terminal Vdriver, since the second capacitor C2 has the characteristics of high impedance to DC signals and low impedance to AC signals, the second capacitor C2 is equivalent to a short circuit. The second drive signal is quickly transmitted to the control electrode G through the second resistor Roff, the second capacitor C2 and the first voltage holding unit 12, so that the voltage of the control electrode G can drop quickly, reducing the disconnection delay time and helping to reduce disconnection loss.

[0069] It is understandable that the positions of the second resistor Roff and the second capacitor C2 can be interchanged. That is, the second resistor Roff can be connected in series between the second capacitor C2 and the second diode D2, which can be set according to actual needs.

[0070] Optional, Figure 10 A schematic diagram of another transistor driving circuit provided in an embodiment of the present invention is shown below. Figure 10 As shown, the drive circuit 100 also includes a protection resistor Rh; the protection resistor Rh is electrically connected to the control electrode G and the second electrode of the transistor Q, respectively.

[0071] The resistance value of the protection resistor Rh can be set according to actual needs. In an optional embodiment, the resistance value of the protection resistor Rh is in the range of 1KΩ to 100KΩ. For example, the resistance value of the protection resistor Rh is 3KΩ, but it can also be other values, which are not specifically limited here.

[0072] Specifically, by setting a protective resistor Rh between the control electrode G and the second electrode S of transistor Q, when transistor Q malfunctions or fails, the charge on the control electrode G can be discharged to the second electrode S through the protective resistor Rh, so that transistor Q is in an off state to protect transistor Q.

[0073] Optional, see reference Figure 10 The driving circuit 100 also includes a third capacitor C3; the third capacitor C3 is electrically connected to the control electrode G and the second electrode of the transistor Q.

[0074] The capacitance value of the third capacitor C3 can be set according to actual needs, and no specific limitation is made here.

[0075] Specifically, by setting a third capacitor C3 between the control electrode G and the second electrode S of transistor Q, the drive signal of the control electrode G is filtered, the waveform of the control electrode G is optimized, and the on / off control stability of transistor Q is improved.

[0076] Based on the same inventive concept, the present invention also provides a transistor driving device. Figure 11 This is a schematic diagram of a transistor driving device provided in an embodiment of the present invention, as shown below. Figure 11 As shown, the driving device 1000 of the transistor includes a driving signal providing module 200 and a driving circuit 100 of the transistor provided in any embodiment of the present invention; the driving signal providing module 200 is electrically connected to the driving circuit 100.

[0077] The drive signal providing module 20 may include devices such as a pulse generator for generating pulse signals, and can be configured according to actual needs; no specific limitations are made here.

[0078] The driving device 1000 includes the driving circuit 100 provided in any embodiment of the present invention. Therefore, the driving device 1000 possesses the technical features of the driving circuit 100 provided in the embodiments of the present invention and can achieve the beneficial effects of the driving circuit 100 provided in the embodiments of the present invention. Similarities can be referred to the above description of the driving circuit 100 provided in the embodiments of the present invention, and will not be repeated here.

[0079] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A transistor driving circuit, characterized in that, At least including: First driving unit and first voltage holding unit; The first driving unit includes a first terminal and a second terminal; the first terminal is electrically connected to a driving signal terminal, and the second terminal is electrically connected to one end of the first voltage holding unit; the other end of the first voltage holding unit is electrically connected to the control electrode of the transistor. Specifically, when the first driving unit first provides a first driving signal to the control electrode through the first voltage holding unit, causing the transistor to be in a conducting state; after the transistor switches from the conducting state to the de-conducting state, the first voltage holding unit is used to control the second terminal to maintain a first holding voltage.

2. The driving circuit according to claim 1, characterized in that, The first voltage holding unit includes: a first capacitor and a first diode; One end of the first capacitor is electrically connected to the second end, the other end of the first capacitor is electrically connected to the anode of the first diode, and the cathode of the first diode is electrically connected to the control electrode.

3. The driving circuit according to claim 2, characterized in that, The first driving unit includes: a first resistor; One end of the first resistor is electrically connected to the drive signal terminal, and the other end of the first resistor is electrically connected to one end of the first capacitor.

4. The driving circuit according to claim 1, characterized in that, Also includes: Maintaining resistance; The sustaining resistor is electrically connected to both the drive signal terminal and the control electrode.

5. The driving circuit according to claim 4, characterized in that, Also includes: Second driving unit and second voltage holding unit; The second drive unit includes a third terminal and a fourth terminal; the third terminal is electrically connected to the drive signal terminal, and the fourth terminal is electrically connected to one end of the second voltage holding unit; the other end of the second voltage holding unit is electrically connected to the control electrode. Specifically, when the second driving unit first provides a second driving signal to the control electrode through the second voltage holding unit, the transistor is in an off state; after the transistor switches from the off state to the on state, the second voltage holding unit is used to control the fourth terminal to maintain the second holding voltage.

6. The driving circuit according to claim 5, characterized in that, The second voltage holding unit includes: a second capacitor and a second diode; One end of the second capacitor is electrically connected to the fourth terminal, the other end of the second capacitor is electrically connected to the cathode of the second diode, and the anode of the second diode is electrically connected to the control electrode.

7. The driving circuit according to claim 5, characterized in that, The second driving unit includes: a second resistor; One end of the second resistor is electrically connected to the drive signal terminal, and the other end of the second resistor is electrically connected to one end of the second capacitor.

8. The driving circuit according to claim 1, characterized in that, Also includes: Protective resistor; The protective resistor is electrically connected to the control electrode and the second electrode of the transistor, respectively.

9. The driving circuit according to claim 8, characterized in that, Also includes: Third capacitor; The third capacitor is electrically connected to the control electrode and the second electrode of the transistor.

10. A transistor driving device, characterized in that, include: A drive signal providing module and a drive circuit for the transistor according to any one of claims 1 to 9; The drive signal providing module is electrically connected to the drive circuit.

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