CN219643792U - N-type switching tube driving circuit structure, circuit board and intelligent power supply - Google Patents
N-type switching tube driving circuit structure, circuit board and intelligent power supply Download PDFInfo
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- CN219643792U CN219643792U CN202320726560.XU CN202320726560U CN219643792U CN 219643792 U CN219643792 U CN 219643792U CN 202320726560 U CN202320726560 U CN 202320726560U CN 219643792 U CN219643792 U CN 219643792U
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- 238000004146 energy storage Methods 0.000 claims abstract description 58
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000013256 coordination polymer Substances 0.000 description 31
- 238000010586 diagram Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model is suitable for the technical field of electronic circuits, and particularly provides an N-type switching tube driving circuit structure, a circuit board and an intelligent power supply, wherein the structure comprises a switching tube driving circuit which is connected with an N-type switching tube, and the N-type switching tube is arranged on a circuit between an input end and an output end of a main circuit; the bootstrap voltage circuit is connected with the energy storage element in the switching tube driving circuit and used for outputting charging voltage to the energy storage element for charging so as to enable the energy storage element to drive the N-type switching tube to be conducted. The utility model adopts the N-type switching tube as the switching control, so that the circuit is simple, the internal resistance of the N-type switching tube is small, the power loss of the switching tube can be effectively reduced, the heating value of the device is reduced, the area of the radiating fin is greatly reduced, and the hardware cost is effectively controlled.
Description
Technical Field
The utility model belongs to the technical field of electronic circuits, and particularly relates to an N-type switching tube driving circuit structure, a circuit board and an intelligent power supply.
Background
For inverter-type intelligent power products, the high voltage side needs to be switch controlled. In the prior art, a P-type MOS tube or an N-type MOS tube is used as a switching tube to realize switching control.
But the bootstrap voltage IC is required to drive by using the N-type MOS tube as a switch tube, so that the circuit structure is complex, and the hardware cost is increased. The P-type MOS tube has larger internal resistance due to the process, so that the switching loss of the P-type MOS tube is large, the device is serious in heating, a matched heat dissipation structure is needed, the heat dissipation area of the heat dissipation structure is required to be larger, the hardware cost is increased, and the structural design and production difficulty are improved.
Disclosure of Invention
The utility model provides an N-type switching tube driving circuit structure, which solves the problems of complex structure, high switching loss, serious heating of devices, increased hardware cost caused by increased heat dissipation area and increased structural design and production difficulty of the traditional switching control circuit of a power supply.
The utility model is realized in such a way that an N-type switching tube driving circuit structure comprises:
the switching tube driving circuit is connected with an N-type switching tube, and the N-type switching tube is arranged on a line between the input end and the output end of the main line;
the bootstrap voltage circuit is connected with the energy storage element in the switching tube driving circuit and used for outputting charging voltage to the energy storage element for charging so that the energy storage element drives the N-type switching tube to be conducted.
Optionally, the N-type switching tube driving circuit structure further includes:
the switching tube driving circuit is connected with the switching tube driving circuit and is used for outputting a driving signal to the switching tube driving circuit when receiving an external control signal so as to enable the switching tube driving circuit to output the voltage of the energy storage element to the N-type switching tube to drive the N-type switching tube to be conducted.
Optionally, the bootstrap voltage circuit is further connected to the input end, and is configured to output the output charging voltage and the voltage of the input end to the energy storage element for charging after the output charging voltage and the voltage of the input end are superimposed.
Optionally, the switching tube driving circuit includes a first resistor;
one end of the first resistor is connected with the grid electrode of the N-type switching tube and one end of the energy storage element, and the other end of the first resistor is connected with the source electrode of the N-type switching tube;
the other end of the energy storage element is grounded.
Optionally, the switching tube driving circuit further comprises a second resistor;
one end of the first resistor is connected with one end of the energy storage element through the second resistor.
Optionally, the switching tube driving circuit further comprises a first diode;
one end of the energy storage element is connected with the second resistor through the first diode which is conducted in the forward direction.
Optionally, the switching tube driving circuit further comprises a voltage stabilizing tube;
the cathode of the voltage stabilizing tube is connected with the grid electrode of the N-type switching tube, and the anode of the voltage stabilizing tube is connected with the source electrode of the N-type switching tube.
Optionally, the bootstrap voltage circuit includes a first switching tube, a second switching tube, a third switching tube, a first capacitor, a second diode, a third resistor, a fourth resistor and a fifth resistor;
the first pole pin of the first switching tube is connected with the system controller, the second pole pin of the first switching tube is grounded, and the third pole pin of the first switching tube is connected with one end of the third resistor, the first pole pin of the second switching tube and the first pole pin of the third switching tube;
a second pole pin of the second switching tube is connected with the first voltage end and the other end of the third resistor; a third electrode pin of the second switch tube is connected with one end of the fourth resistor;
the second electrode pin of the third switching tube is grounded, and the third electrode pin of the third switching tube is connected with one end of the fifth resistor;
the other end of the fourth resistor and the other end of the fifth resistor are connected with one end of the first capacitor;
the other end of the first capacitor is connected with the anode of the second diode;
the cathode of the second diode is connected with the energy storage element.
Optionally, the bootstrap voltage circuit further comprises a third diode;
the anode of the third diode is connected with the input end, and the cathode of the third diode is connected with the anode of the second diode.
Optionally, the conduction driving circuit comprises a fourth switching tube, a fifth switching tube, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor;
a first pole pin of the fourth switching tube is connected with one end of the sixth resistor and one end of the seventh resistor, a second pole pin of the fourth switching tube is connected with the other end of the sixth resistor and one end of the energy storage element, and a third pole pin of the fourth switching tube is connected with the N-type switching tube;
a first pole pin of the fifth switching tube is connected with one end of the eighth resistor and one end of the ninth resistor, a second pole pin of the fifth switching tube is connected with the other end of the seventh resistor, and a third pole pin of the fifth switching tube is grounded;
the other end of the eighth resistor is connected with an external control signal;
the other end of the ninth resistor is grounded.
Optionally, the input terminal and/or the output terminal is grounded through at least one filter capacitor.
In a second aspect, the present utility model also provides a circuit board, including:
a PCB substrate; and
the N-type switch tube driving circuit structure is arranged on the PCB substrate.
In a third aspect, the present utility model further provides an intelligent power supply, including the N-type switching tube driving circuit structure described above.
The bootstrap voltage circuit charges the energy storage element in the switching tube driving circuit so as to enable the energy storage element to drive the N-type switching tube to be conducted. Because the N-type switching tube is adopted for switching control, the implementation circuit is simple, the internal resistance of the N-type switching tube is small, the power loss of the switching tube can be effectively reduced, the heating value of a device is reduced, the area of a radiating fin is greatly reduced, and the hardware cost is effectively controlled.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of an N-type switching tube driving circuit structure according to the present utility model;
FIG. 2 is a schematic diagram of a driving circuit structure of an N-type switching transistor according to an embodiment of the present utility model;
FIG. 3 is a schematic block diagram of another embodiment of an N-type switching tube driving circuit structure according to the present utility model;
FIG. 4 is a schematic diagram of a driving circuit structure of an N-type switching transistor according to another embodiment of the present utility model;
fig. 5 is a schematic circuit diagram of an N-type switching transistor driving circuit according to still another embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The embodiment of the utility model adopts the N-type switching tube as the switching control, so that the implementation circuit is simple, the internal resistance of the N-type switching tube is small, the power loss of the switching tube can be effectively reduced, the heating value of a device is reduced, the area of a radiating fin is greatly reduced, and the hardware cost is effectively controlled.
Example 1
As shown in fig. 1 to 5, the present embodiment provides an N-type switching tube driving circuit structure, which includes:
the switching tube driving circuit 100 is connected with an N-type switching tube QT, and the N-type switching tube QT is arranged on a line between an INPUT end PWR_INPUT and an OUTPUT end PWR_OUTPUT of the main line;
the bootstrap voltage circuit 200 is connected to the energy storage element CP in the switching tube driving circuit 100, and is configured to output a charging voltage to the energy storage element CP for charging, so that the energy storage element CP drives the N-type switching tube QT to be turned on.
In implementation, the N-type switching transistor QT may be an NMOS transistor, where the N-type switching transistor QT includes a gate, a source, and a drain, the drain of the N-type switching transistor QT is connected to the INPUT terminal pwr_input, the source of the N-type switching transistor QT is connected to the OUTPUT terminal pwr_output, and the gate of the N-type switching transistor QT is connected to the switching transistor driving circuit 100.
Alternatively, the INPUT terminal pwr_input may be regarded as the end of the N-type switching transistor QT connected to the power source, and the OUTPUT terminal pwr_output may be regarded as the end of the N-type switching transistor QT connected to the system load. When the N-type switching tube QT is cut off, the power supply and the system load are disconnected, and when the N-type switching tube QT is conducted, the power supply and the system load are connected.
The switching tube driving circuit 100 is optionally provided with an energy storage element CP, which may be charged, or alternatively, the energy storage element CP may use a capacitor or other components capable of storing electric energy for charging, which is not limited herein.
Optionally, the bootstrap voltage circuit 200 may charge the energy storage element CP, and in the implementation, taking the application of the N-type switching tube driving circuit structure provided by the present utility model to an electrical product as an example, when the electrical product is powered on and started, the bootstrap voltage circuit 200 will charge the energy storage element CP first. At this time, the voltage of the energy storage element CP is insufficient to drive the N-type switching transistor QT to be turned on, and the N-type switching transistor QT is turned off.
Alternatively, when the bootstrap voltage circuit 200 charges the energy storage element CP to a preset voltage value, the preset voltage value may be used to turn on the N-type switching tube QT, where the N-type switching tube QT is turned on.
The utility model is connected with an N-type switching tube QT through a switching tube driving circuit 100, the N-type switching tube QT is arranged on a main line, and a bootstrap voltage circuit 200 charges an energy storage element CP in the switching tube driving circuit 100 so as to enable the energy storage element CP to drive the N-type switching tube QT to be conducted. Because the N-type switching tube QT is adopted for switching control, no special bootstrap voltage IC drive is needed, the implementation circuit is simple, the internal resistance of the N-type switching tube QT is small, the power loss of the switching tube can be effectively reduced, the heating value of a device is reduced, the area of a radiating fin is greatly reduced, and the hardware cost is effectively controlled.
Example two
In some optional embodiments, the N-type switching tube driving circuit structure provided by the present utility model further includes:
the turn-on driving circuit 300 is connected to the switching tube driving circuit 100, and is configured to output a driving signal to the switching tube driving circuit 100 when receiving an external control signal, so that the switching tube driving circuit 100 outputs the voltage of the energy storage element CP to the N-type switching tube QT to drive the N-type switching tube QT to be turned on.
Alternatively, the external control signal may be regarded as a control signal input by a user, and the above-mentioned electric product is exemplified by a switch structure such as a switch button, and the user generates the external control signal when pressing the switch button.
Then, when the on-driving circuit 300 receives the external control signal, the on-driving circuit 300 outputs a driving signal to the switching tube driving circuit 100.
Alternatively, the switching tube driving circuit 100 functions as a switch between the N-type switching tube QT and the energy storage element CP. When the on-driving circuit 300 does not output a driving signal to the switching tube driving circuit 100, the switching tube driving circuit 100 turns off the connection between the N-type switching tube QT and the energy storage element CP, and at this time, the voltage of the energy storage element CP cannot be supplied to the N-type switching tube QT, which is turned off. When the on-driving circuit 300 outputs a driving signal to the switching tube driving circuit 100, the switching tube driving circuit 100 turns on the connection between the N-type switching tube QT and the energy storage element CP, and at this time, the voltage of the energy storage element CP is given to the N-type switching tube QT, which is turned on.
Example III
In some alternative embodiments, bootstrap voltage circuit 100 is further connected to INPUT terminal pwr_input for superimposing the output charging voltage and the voltage of INPUT terminal pwr_input and outputting the superimposed voltage to energy storage element CP for charging.
The charging voltage output by the bootstrap voltage circuit 100 and the voltage of the INPUT terminal pwr_input are overlapped and then output to the energy storage element CP for charging, so as to reduce the requirement on the output voltage of the bootstrap voltage circuit 100.
Example IV
Optionally, the switching tube driving circuit 100 includes a first resistor R1;
one end of the first resistor R1 is connected with the grid electrode of the N-type switching tube QT and one end of the energy storage element CP, and the other end of the first resistor R1 is connected with the source electrode of the N-type switching tube QT;
the other end of the energy storage element CP is grounded.
In implementation, two ends of the first resistor R1 are respectively connected with a grid electrode and a source electrode of the N-type switching tube QT, so that the conduction reliability and stability of the N-type switching tube QT are improved.
Optionally, the switching tube driving circuit 100 further includes a second resistor R2;
one end of the first resistor R1 is connected to one end of the energy storage element CP through the second resistor R2.
In practice, the second resistor R2 is used to improve EMC (Electromagnetic Compatibility ).
Optionally, the switching tube driving circuit 100 further includes a first diode D1;
one end of the energy storage element CP is connected to the second resistor R2 through the first diode D1 that is turned on in the forward direction.
In implementation, one end of the energy storage element CP is connected with the anode of the first diode D1, the cathode of the first diode D1 is connected with the second resistor R2, and the first diode D1 plays a role of unidirectional conduction, so that the requirement on the energy storage element CP can be effectively reduced.
Optionally, the switching tube driving circuit 100 further includes a voltage stabilizing tube DZ1;
the cathode of the voltage stabilizing tube DZ1 is connected with the grid electrode of the N-type switching tube QT, and the anode of the voltage stabilizing tube DZ1 is connected with the source electrode of the N-type switching tube QT.
In implementation, the voltage stabilizing tube DZ1 plays a role in stabilizing the GS (gate source) pole driving voltage of the N-type switching tube QT, and ensures the stability and reliability of the circuit.
Example five
Optionally, the bootstrap voltage circuit 200 includes a first switching tube Q1, a second switching tube Q2, a first capacitor C1, a third switching tube Q3, a second diode D2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5;
the first pole pin of the first switching tube Q1 is connected with the system controller, the second pole pin of the first switching tube Q1 is grounded, and the third pole pin of the first switching tube Q1 is connected with one end of the third resistor R3, the first pole pin of the second switching tube Q2 and the first pole pin of the third switching tube Q3;
the second pole pin of the second switching tube Q2 is connected with the first voltage end V1 and the other end of the third resistor R3; a third electrode pin of the second switch tube Q2 is connected with one end of a fourth resistor R4;
the second electrode pin of the third switching tube Q3 is grounded, and the third electrode pin of the third switching tube Q3 is connected with one end of a fifth resistor R5;
the other end of the fourth resistor R4 and the other end of the fifth resistor R5 are connected with one end of the first capacitor C1;
the other end of the first capacitor C1 is connected with the anode of the second diode D2;
the cathode of the second diode D2 is connected to the energy storage element CP.
Optionally, the bootstrap voltage circuit 200 further comprises a third diode D3;
an anode of the third diode D3 is connected to the INPUT terminal pwr_input, and a cathode of the third diode D3 is connected to an anode of the second diode D2.
Optionally, the on-driving circuit 300 includes a fourth switching tube Q4, a fifth switching tube Q5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9;
a first electrode pin of the fourth switching tube Q4 is connected with one end of the sixth resistor R6 and one end of the seventh resistor R7, a second electrode pin of the fourth switching tube Q4 is connected with the other end of the sixth resistor R6 and one end of the energy storage element CP, and a third electrode pin of the fourth switching tube Q4 is connected with the N-type switching tube QT;
a first pole pin of the fifth switching tube Q5 is connected with one end of an eighth resistor R8 and one end of a ninth resistor R9, a second pole pin of the fifth switching tube Q5 is connected with the other end of a seventh resistor R7, and a third pole pin of the fifth switching tube Q5 is grounded;
the other end of the eighth resistor R8 is connected with an external control signal;
the other end of the ninth resistor R9 is grounded.
Optionally, one end of the energy storage element CP is connected to the cathode of the second diode D2 and the second pin of the fourth switching tube Q4, the other end of the energy storage element CP is grounded, and the third pin of the fourth switching tube Q4 is connected to the anode of the first diode.
Optionally, the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4 and the fifth switching tube Q5 all adopt switching elements, and in implementation, the switching elements include, but are not limited to, a triode, a MOS tube, a relay or other components with switching functions, which are not limited herein.
Optionally, the first pole pin, the second pole pin and the third pole pin of the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4 and the fifth switching tube Q5 respectively correspond to three pins of the switching element. Illustratively, taking a switching element as a triode, the first pole pin, the second pole pin and the third pole pin respectively correspond to a base electrode, an emitter electrode and a collector electrode of the triode. When the switching element is a MOS tube, the first pole pin, the second pole pin and the third pole pin respectively correspond to the grid electrode, the source electrode and the drain electrode of the MOS tube.
Optionally, the system controller is a control chip of the product, and in implementation, the system controller is denoted as dc_pwm5, and generates a PWM signal to drive the first switching tube Q1, so that the second switching tube Q2, the third switching tube Q3, the fourth resistor R4, and the fifth resistor R5 form an oscillation, and the fourth resistor R4, the fifth resistor R5, and the first capacitor C1 form an RC oscillation, so as to charge the first capacitor C1.
The first voltage terminal V1 provides the power supply voltage of the bootstrap voltage circuit 200, and taking the voltage of the first voltage V1 as an example, the voltage of the first capacitor C1 is added to the voltage of the INPUT terminal pwr_input, and then the energy storage element CP is charged by the second diode D2, so that the voltage of the energy storage element CP is 12v+pwr_input, and the N-type switching tube QT can be driven to be turned on.
In some embodiments, when the circuit further includes the turn-on driving circuit 300, when the turn-on driving circuit 300 receives an external control signal, taking the external control signal ngat5_en as an example of a high voltage, the ngat5_en high voltage turns on the fifth switching tube Q5, so that the fourth switching tube Q4 is turned on, the G electrode (gate) of the N-type switching tube QT obtains a voltage of 12v+pwr_input, that is, the GS electrode (gate-source) of the N-type switching tube QT on the high voltage side obtains a driving voltage of 12V, so the N-type switching tube QT can be stably turned on.
It should be noted that, the bootstrap voltage of 12V in the above embodiment is an example of an embodiment of the present utility model, but not a limitation of the present utility model, in other embodiments, the bootstrap voltage may also be other voltage values, and the bootstrap voltage may be a high-voltage side N-type switching tube QT driving voltage according to the selection, which is not limited herein.
Example six
In some embodiments, INPUT terminal pwr_input and/or OUTPUT terminal pwr_output are grounded through at least one filter capacitor.
In implementation, the INPUT terminal pwr_input and the OUTPUT terminal pwr_output are grounded through the filter capacitor, and, for example, taking the filter capacitor C2 and the filter capacitor C3 as examples, as shown in fig. 2, the INPUT terminal pwr_input is grounded through the filter capacitor C2, and the OUTPUT terminal pwr_output is grounded through the filter capacitor C3, which can effectively filter clutter and improve signal stability.
Optionally, the INPUT terminal pwr_input and/or the OUTPUT terminal pwr_output may be grounded through a plurality of filter capacitors, where the plurality of filter capacitors may further filter out clutter, and in a certain range, the greater the number of filter capacitors, the higher the signal stability, and preferably the filter capacitors are set to be two.
Example seven
In some embodiments, the present utility model also provides a circuit board comprising:
a PCB substrate; and
the N-type switch tube driving circuit structure is arranged on the PCB substrate.
In practice, the PCB (Printed Circuit Board ) substrate is a support for the electronic components and is a carrier for the electronic components to be electrically interconnected. The arrangement of the N-type switching tube driving circuit structure on the PCB substrate can be regarded as etching a circuit on the PCB substrate and welding corresponding components so that the PCB substrate can drive the N-type switching tube to be conducted. Because the N-type switching tube is adopted for switching control, the implementation circuit is simple, the internal resistance of the N-type switching tube is small, the power loss of the switching tube can be effectively reduced, the heating value of a device is reduced, the area of a radiating fin is greatly reduced, and the hardware cost is effectively controlled.
It will be clear to those skilled in the art that, for convenience and indirection of the description, the structure and implementation principle of the circuit board described above may refer to the corresponding structure and implementation principle in the first to sixth embodiments, and are not repeated herein.
Example eight
In some alternative embodiments, the utility model also provides an intelligent power supply, which comprises a circuit board as described above.
It will be clear to those skilled in the art that, for convenience and indirection of the description, the structure and implementation principle of the intelligent power supply described above may refer to the corresponding structure and implementation principle in the first to seventh embodiments, and are not repeated herein.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (13)
1. An N-type switching tube driving circuit structure, comprising:
the switching tube driving circuit is connected with an N-type switching tube, and the N-type switching tube is arranged on a line between the input end and the output end of the main line;
and the bootstrap voltage circuit is connected with the energy storage element in the switching tube driving circuit and is used for outputting charging voltage to the energy storage element for charging so that the energy storage element drives the N-type switching tube to be conducted.
2. The N-type switching tube driving circuit structure according to claim 1, wherein the N-type switching tube driving circuit structure further comprises:
and the conduction driving circuit is connected with the switching tube driving circuit and is used for outputting a driving signal to the switching tube driving circuit when receiving an external control signal so that the switching tube driving circuit outputs the voltage of the energy storage element to the N-type switching tube to drive the N-type switching tube to be conducted.
3. The N-type switching tube driving circuit structure according to claim 1, wherein the bootstrap voltage circuit is further connected to the input terminal, and is configured to superimpose the output charging voltage and the voltage of the input terminal and output the superimposed charging voltage and voltage of the input terminal to the energy storage element for charging.
4. The N-type switching tube driving circuit structure according to claim 1, wherein the switching tube driving circuit comprises a first resistor;
one end of the first resistor is connected with the grid electrode of the N-type switching tube and one end of the energy storage element, and the other end of the first resistor is connected with the source electrode of the N-type switching tube;
the other end of the energy storage element is grounded.
5. The N-type switching tube driving circuit structure as claimed in claim 4, wherein said switching tube driving circuit further comprises a second resistor;
one end of the first resistor is connected with one end of the energy storage element through the second resistor.
6. The N-type switching tube driving circuit structure as claimed in claim 5, wherein said switching tube driving circuit further comprises a first diode;
one end of the energy storage element is connected with the second resistor through the first diode which is conducted in the forward direction.
7. An N-type switching tube driving circuit structure according to any one of claims 4 to 6, wherein the switching tube driving circuit further comprises a regulator tube;
the cathode of the voltage stabilizing tube is connected with the grid electrode of the N-type switching tube, and the anode of the voltage stabilizing tube is connected with the source electrode of the N-type switching tube.
8. The N-type switching tube driving circuit structure of claim 1, wherein the bootstrap voltage circuit comprises a first switching tube, a second switching tube, a third switching tube, a first capacitor, a second diode, a third resistor, a fourth resistor and a fifth resistor;
the first pole pin of the first switching tube is connected with the system controller, the second pole pin of the first switching tube is grounded, and the third pole pin of the first switching tube is connected with one end of the third resistor, the first pole pin of the second switching tube and the first pole pin of the third switching tube;
a second pole pin of the second switching tube is connected with the first voltage end and the other end of the third resistor; a third electrode pin of the second switch tube is connected with one end of the fourth resistor;
the second electrode pin of the third switching tube is grounded, and the third electrode pin of the third switching tube is connected with one end of the fifth resistor;
the other end of the fourth resistor and the other end of the fifth resistor are connected with one end of the first capacitor;
the other end of the first capacitor is connected with the anode of the second diode;
the cathode of the second diode is connected with the energy storage element.
9. The N-type switching tube driving circuit structure according to claim 8, wherein the bootstrap voltage circuit further comprises a third diode;
the anode of the third diode is connected with the input end, and the cathode of the third diode is connected with the anode of the second diode.
10. The N-type switching tube driving circuit structure according to claim 2, wherein the on driving circuit includes a fourth switching tube, a fifth switching tube, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor;
a first pole pin of the fourth switching tube is connected with one end of the sixth resistor and one end of the seventh resistor, a second pole pin of the fourth switching tube is connected with the other end of the sixth resistor and one end of the energy storage element, and a third pole pin of the fourth switching tube is connected with the N-type switching tube;
a first pole pin of the fifth switching tube is connected with one end of the eighth resistor and one end of the ninth resistor, a second pole pin of the fifth switching tube is connected with the other end of the seventh resistor, and a third pole pin of the fifth switching tube is grounded;
the other end of the eighth resistor is connected with an external control signal;
the other end of the ninth resistor is grounded.
11. The N-type switching tube driving circuit structure according to claim 1, wherein the input terminal and/or the output terminal is grounded through at least one filter capacitor.
12. A circuit board, comprising:
a PCB substrate; and
the N-type switching tube driving circuit structure according to any one of claims 1 to 11, disposed on the PCB substrate.
13. An intelligent power supply comprising the circuit board of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726560.XU CN219643792U (en) | 2023-03-27 | 2023-03-27 | N-type switching tube driving circuit structure, circuit board and intelligent power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320726560.XU CN219643792U (en) | 2023-03-27 | 2023-03-27 | N-type switching tube driving circuit structure, circuit board and intelligent power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643792U true CN219643792U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320726560.XU Active CN219643792U (en) | 2023-03-27 | 2023-03-27 | N-type switching tube driving circuit structure, circuit board and intelligent power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643792U (en) |
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2023
- 2023-03-27 CN CN202320726560.XU patent/CN219643792U/en active Active
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