CN115940590A - Drive power supply and electronic device - Google Patents
Drive power supply and electronic device Download PDFInfo
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- CN115940590A CN115940590A CN202211351778.8A CN202211351778A CN115940590A CN 115940590 A CN115940590 A CN 115940590A CN 202211351778 A CN202211351778 A CN 202211351778A CN 115940590 A CN115940590 A CN 115940590A
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- power supply
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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 invention provides a driving power supply and an electronic device, the driving power supply includes: a drive circuit and a power amplification circuit; the power amplification circuit comprises at least one switching tube; the input end of the driving circuit is used for being connected with an external power supply, the control end of the driving circuit is used for inputting a control signal, and the output end of the driving circuit is connected with the power amplifying circuit and used for driving a switching tube of the power amplifying circuit; the driving circuit is arranged on the first printed circuit board, the power amplifying circuit is arranged on the second printed circuit board, and the first printed circuit board is electrically connected with the second printed circuit board and is vertically and orthogonally arranged. According to the invention, the driving circuit and the power amplifying circuit are arranged on the two printed circuit boards which are vertically and orthogonally arranged, so that the influence of the PCB wiring layer coupling of the power amplifying circuit on the driving signal of the driving circuit is avoided, the control stability of the switching tube is improved, and the safety and the stability of the driving power supply are effectively improved.
Description
Technical Field
The invention relates to the technical field of driving power supplies, in particular to a driving power supply and electronic equipment.
Background
The driving power supply serves as a power converter for converting an input power supply into a specific voltage and current to drive a load. The driving power supply generally comprises a driving module and a power amplification module, wherein the driving module drives a switching tube of the power amplification module to realize power amplification, and is used for driving a load.
In the prior art, when the switching tube of the power amplification module of the driving power supply adopts the MOS tube or other high-speed devices, the driving module is interfered, which may cause the misconduction of the switching tube, affect the performance of the device, even cause the explosion of the device, and seriously affect the stability and safety of the driving power supply.
Disclosure of Invention
The embodiment of the invention provides a driving power supply and electronic equipment, and aims to solve the problems that the driving power supply is seriously influenced by interference when a high-speed switching tube is adopted in the prior art, and the stability of the driving power supply is influenced.
In a first aspect, an embodiment of the present invention provides a driving power supply, including: a drive circuit and a power amplification circuit; the power amplification circuit comprises at least one switching tube;
the input end of the driving circuit is used for being connected with an external power supply, the control end of the driving circuit is used for inputting a control signal, and the output end of the driving circuit is connected with the power amplifying circuit and used for driving a switching tube of the power amplifying circuit;
the driving circuit is arranged on the first printed circuit board, the power amplifying circuit is arranged on the second printed circuit board, and the first printed circuit board is electrically connected with the second printed circuit board;
the first printed circuit board and the second printed circuit board are vertically and orthogonally arranged.
Optionally, the driving power supply further includes: an isolation filter circuit;
the input end of the isolation filter circuit is connected with an external power supply, and the output end of the isolation filter circuit is connected with the input end of the drive circuit.
Optionally, the isolation filter circuit includes: a common mode inductor and a filter capacitor;
the first end of the first coil of the common-mode inductor is connected with the input end of the isolation filter circuit, and the second end of the first coil of the common-mode inductor is connected with the output end of the isolation filter circuit;
and the first end of the second coil of the common mode inductor is connected with the grounding end corresponding to the external power supply, and the second end of the second coil of the common mode inductor is connected with the grounding end of the driving circuit.
Optionally, the common-mode inductor is a magnetic ring type iron core common-mode inductor.
Optionally, the driving circuit includes: the power supply module and the driving module;
the input end of the power supply module is connected with the input end of the driving circuit, and the output end of the power supply module is connected with the power supply end of the driving module and used for supplying power to the driving module;
the input end of the driving module is connected with the control end of the driving circuit, and the output end of the driving module is connected with the output end of the driving circuit.
Optionally, the driving module is an isolated driving module, and the power supply module is an isolated power supply module; the output of power module includes: the first power supply output end is isolated from the second power supply output end; the power supply terminal of the driving module includes: the input power supply end is isolated from the output power supply end;
the first power supply output end is connected with the input power supply end, and the second power supply output end is isolated from the output power supply end.
Optionally, the power module includes: a non-isolated conversion unit and an isolated conversion unit;
the input end of the isolation conversion unit is respectively connected with the input end of the power module and the input end of the non-isolation conversion unit;
the output end of the non-isolation conversion unit is connected with the first power supply output end, and the output end of the isolation conversion unit is isolated from the second power supply output end.
Optionally, the switching tube is an MOS tube.
In a second aspect, an embodiment of the present invention provides an electronic device, which includes the driving power supply as provided in the first aspect of the embodiment of the present invention.
The embodiment of the invention provides a driving power supply and electronic equipment, wherein the driving power supply comprises: a drive circuit and a power amplification circuit; the power amplification circuit comprises at least one switching tube; the input end of the driving circuit is used for being connected with an external power supply, the control end of the driving circuit is used for inputting a control signal, and the output end of the driving circuit is connected with the power amplifying circuit and used for driving a switching tube of the power amplifying circuit; the driving circuit is arranged on the first printed circuit board, the power amplifying circuit is arranged on the second printed circuit board, and the first printed circuit board and the second printed circuit board are electrically connected and vertically and orthogonally arranged. According to the invention, the driving circuit and the power amplifying circuit are arranged on the two vertical orthogonal printed circuit boards, so that the projection area of the first printed circuit board on the second printed circuit board is minimum, the interference caused by the PCB wiring layer coupling of the power amplifying circuit to a switching tube driving signal generated by the driving circuit is avoided, the stability of the switching tube control is improved, and the safety and the stability of the driving power supply are effectively improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a driving power supply according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of another driving power supply according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an isolation filter circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of a driving circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a power module according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, a driving power supply according to an embodiment of the present invention is shown, including: a drive circuit 11 and a power amplifier circuit 12; the power amplifying circuit 12 includes at least one switching tube;
the input end of the driving circuit 11 is used for being connected with an external power supply VCC, the control end of the driving circuit 11 is used for inputting a control signal, and the output end of the driving circuit 11 is connected with the power amplifying circuit 12 and used for driving a switching tube of the power amplifying circuit 12;
the driving circuit 11 is arranged on a first printed circuit board, the power amplifying circuit 12 is arranged on a second printed circuit board, and the first printed circuit board is electrically connected with the second printed circuit board;
the first printed circuit board and the second printed circuit board are vertically and orthogonally arranged.
In the embodiment of the present invention, the driving circuit 11 outputs a driving signal for driving the switching tube of the power amplifying circuit 12 to achieve power amplification and drive the load 13. If the driving circuit 11 and the power amplifying circuit 12 are disposed on a printed circuit board, there will be interlayer interference between the power amplifying circuit 12 and the wiring layer of the driving circuit 11, so as to affect the accuracy of the driving signal output by the driving circuit 11, cause the malfunction of the switching tube, and affect the stability and safety of the driving power supply.
Based on this, in the embodiment of the present invention, the driving circuit 11 and the power amplifying circuit 12 are separately disposed and arranged on the two printed circuit boards, thereby avoiding interlayer interference, preventing the power amplifying circuit 12 from interfering with the driving signal, and effectively improving the accuracy of the driving signal. Furthermore, the first printed circuit board and the second printed circuit board are perpendicularly and orthogonally arranged, the projection area of the first printed circuit board on the second printed circuit board is the smallest, interlayer interference is minimized, and the stability and the safety of the driving power supply are effectively improved.
Illustratively, the first printed circuit board and the second printed circuit board may be electrically connected by a connector.
In one possible embodiment, referring to fig. 2, the driving power supply may further include: an isolation filter circuit 14;
the input terminal of the isolation filter circuit 14 is connected to an external power source VCC, and the output terminal of the isolation filter circuit 14 is connected to the input terminal of the drive circuit 11.
In order to further reduce the influence of the external interference signal on the circuit, an isolation filter circuit 14 is arranged at the input end of the external power supply VCC to prevent the external interference signal from entering the circuit, thereby reducing crosstalk.
In one possible implementation, referring to fig. 3, the isolation filter circuit 14 may include: a common mode inductor L1 and a filter capacitor C1;
a first end of a first coil of the common mode inductor L1 is connected with an input end of the isolation filter circuit 14, and a second end of the first coil of the common mode inductor L1 is connected with an output end of the isolation filter circuit 14;
the first end of the second coil of the common mode inductor L1 is connected to the ground terminal corresponding to the external power VCC, and the second end of the second coil of the common mode inductor L1 is connected to the ground terminal of the driving circuit 11.
In the embodiment of the invention, the common-mode inductor L1 is adopted to filter the power supply and the ground simultaneously, so that external interference signals are prevented from entering the circuit through the power supply or the ground.
In one possible embodiment, the common mode inductor L1 may be a magnetic ring-type core common mode inductor.
The common mode inductor L1 in the embodiment of the invention adopts the magnetic ring type iron core common mode inductor, has high initial magnetic permeability and high saturation magnetic induction intensity, can obtain larger inductance with small volume, and has small volume. Meanwhile, the temperature is stable, the frequency characteristic is flexible and high, the frequency range is wide, and the method is suitable for isolation filtering.
In a possible implementation, referring to fig. 4, the driving circuit 11 may include: a power module 111 and a driving module 112;
the input end of the power module 111 is connected with the input end of the driving circuit 11, and the output end of the power module 111 is connected with the power end of the driving module 112 and is used for supplying power to the driving module 112;
the input end of the driving module 112 is connected to the control end of the driving circuit 11, and the output end of the driving module 112 is connected to the output end of the driving circuit 11.
In one possible embodiment, the driving module 112 may be an isolated driving module, and the power module 111 may be an isolated power module 111; the output of the power module 111 includes: the first power supply output end is isolated from the second power supply output end; the power terminals of the driving module 112 include: the input power supply end is isolated from the output power supply end;
the first power supply output end is connected with the input power supply end, and the second power supply output end is isolated from the output power supply end.
In the embodiment of the present invention, a separate power module 111 is provided to convert the external power VCC into a suitable voltage to supply power to the driving module 112. In order to further reduce the interference of the circuit, the driving module 112 may adopt an isolation driving module, and the power module 111 may also adopt an isolation power module 111, so as to prevent external interference signals from entering the circuit through power crosstalk and affecting the accuracy of the driving signals. The isolation power supply module 111 outputs two isolated power supplies which are respectively used for supplying power to the input part and the output part of the isolation driving module, so as to ensure the complete isolation of the circuit.
It should be noted that the grounds of the power module 111 and the driving module 112 are isolated. The ground corresponding to the first power output terminal is isolated from the ground corresponding to the second power output terminal, the ground corresponding to the input power supply terminal of the driving module 112 is also isolated from the ground corresponding to the output power supply terminal, the ground corresponding to the first power output terminal is shared with the ground corresponding to the input power supply terminal of the driving module 112, and the ground corresponding to the second power output terminal is shared with the ground corresponding to the output power supply terminal of the driving module 112.
Further, based on fig. 3, the ground terminal of the driving circuit 11 connected to the second terminal of the second coil of the common mode inductor L1 should be the ground terminal corresponding to the input power supply terminal of the driving module 112, so as to achieve effective circuit isolation.
In one possible implementation, referring to fig. 5, the power module 111 may include: a non-isolation transform unit 1111 and an isolation transform unit 1112;
the input end of the isolation conversion unit 1112 is connected to the input end of the power module 111 and the input end of the non-isolation conversion unit 1111, respectively;
the output terminal of the non-isolated transform unit 1111 is connected to the first power output terminal, and the output terminal of the isolated transform unit 1112 is isolated from the second power output terminal.
The isolation driving module can realize the isolation of the input part and the output part, the power supply of the input part can adopt the non-isolation conversion unit 1111, the isolation is not needed, and only the power supply of the output part needs to be isolated.
For example, the non-isolated transform unit 1111 may include: a first DC converter;
the external power source VCC can be a direct current power source, and the first direct current converter performs voltage conversion on the external direct current power source, converts the voltage into a power source matched with the voltage of the input power supply end of the isolation driving module, and supplies power to the input part of the isolation driving module.
Specifically, the first dc converter may be a three-terminal regulator.
Further, the isolation transform unit 1112 may include: a second DC converter and an isolation transformer;
the second direct current converter is used for carrying out voltage conversion on an external direct current power supply and simultaneously transmitting the voltage to the isolation transformer for carrying out isolation transformation. The detailed description of the circuit is omitted here.
Specifically, the second dc converter may be a switching regulator.
It should be noted that, if the driving module 112 includes two or more driving chips, the isolation transformer should have a plurality of isolation outputs (a plurality of second power output terminals) respectively for providing isolated power supply for each driving chip.
In one possible embodiment, the external power source VCC voltage may be 15V, and the power source of the output terminal of the first dc converter may be 5V.
In one possible embodiment, the switching tube may be a MOS tube.
In the embodiment of the present invention, the driving module 112 performs switching control by using an MOS transistor with a higher switching rate, and is suitable for high-frequency occasions.
Corresponding to the above embodiments, embodiments of the present invention provide an electronic device, including the driving power supply provided in the above embodiments of the present invention, and having advantages of the driving power supply, which are not described herein again.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. A drive power supply, characterized by comprising: a drive circuit and a power amplification circuit; the power amplification circuit comprises at least one switching tube;
the input end of the driving circuit is used for being connected with an external power supply, the control end of the driving circuit is used for inputting a control signal, and the output end of the driving circuit is connected with the power amplification circuit and used for driving a switching tube of the power amplification circuit;
the driving circuit is arranged on a first printed circuit board, the power amplifying circuit is arranged on a second printed circuit board, and the first printed circuit board is electrically connected with the second printed circuit board;
wherein the first printed circuit board and the second printed circuit board are vertically orthogonally disposed.
2. The drive power supply according to claim 1, further comprising: an isolation filter circuit;
the input end of the isolation filter circuit is connected with the external power supply, and the output end of the isolation filter circuit is connected with the input end of the drive circuit.
3. The drive power supply according to claim 2, wherein the isolation filter circuit includes: a common mode inductor and a filter capacitor;
the first end of the first coil of the common-mode inductor is connected with the input end of the isolation filter circuit, and the second end of the first coil of the common-mode inductor is connected with the output end of the isolation filter circuit;
and the first end of the second coil of the common mode inductor is connected with the grounding end corresponding to the external power supply, and the second end of the second coil of the common mode inductor is connected with the grounding end of the driving circuit.
4. The driving power supply according to claim 3, wherein the common mode inductor is a magnetic ring type core common mode inductor.
5. The drive power supply according to any one of claims 1 to 4, wherein the drive circuit includes: the power supply module and the driving module;
the input end of the power supply module is connected with the input end of the driving circuit, and the output end of the power supply module is connected with the power supply end of the driving module and used for supplying power to the driving module;
the input end of the driving module is connected with the control end of the driving circuit, and the output end of the driving module is connected with the output end of the driving circuit.
6. The driving power supply according to claim 5, wherein the driving module is an isolated driving module, and the power supply module is an isolated power supply module; the output of the power module includes: a first power supply output terminal and a second power supply output terminal, the first power supply output terminal being isolated from the second power supply output terminal; the power end of the driving module comprises: the power supply device comprises an input power supply end and an output power supply end, wherein the input power supply end is isolated from the output power supply end;
the first power output end is connected with the input power supply end, and the second power output end is isolated from the output power supply end.
7. The driving power supply according to claim 6, wherein the power supply module comprises: a non-isolated conversion unit and an isolated conversion unit;
the input end of the isolation conversion unit is respectively connected with the input end of the power module and the input end of the non-isolation conversion unit;
the output end of the non-isolation conversion unit is connected with the first power supply output end, and the output end of the isolation conversion unit is isolated from the second power supply output end.
8. The driving power supply according to any one of claims 1 to 4, wherein the switching transistor is a MOS transistor.
9. An electronic device characterized by comprising the drive power supply according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211351778.8A CN115940590A (en) | 2022-10-31 | 2022-10-31 | Drive power supply and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211351778.8A CN115940590A (en) | 2022-10-31 | 2022-10-31 | Drive power supply and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115940590A true CN115940590A (en) | 2023-04-07 |
Family
ID=86651759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211351778.8A Pending CN115940590A (en) | 2022-10-31 | 2022-10-31 | Drive power supply and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115940590A (en) |
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2022
- 2022-10-31 CN CN202211351778.8A patent/CN115940590A/en active Pending
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