CN219893172U - Resonant driving circuit and power supply control system - Google Patents
Resonant driving circuit and power supply control system Download PDFInfo
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- CN219893172U CN219893172U CN202321714162.2U CN202321714162U CN219893172U CN 219893172 U CN219893172 U CN 219893172U CN 202321714162 U CN202321714162 U CN 202321714162U CN 219893172 U CN219893172 U CN 219893172U
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Abstract
The utility model discloses a resonant driving circuit and a power supply control system, and belongs to the technical field of electronic circuits. The resonance drive circuit includes: the control module is used for outputting driving current; the voltage input end of the driving module is connected with the output end of the control module, and the driving module is used for increasing the current intensity of the driving current output by the control module and outputting enhanced driving current; and the input end of the resonance module is connected with the voltage output end of the driving module, and the resonance module is used for receiving the enhanced driving current output by the driving module. The utility model solves the technical problem of insufficient driving capability of the LLC power supply simulation control chip in the related technology by adding the driving module between the control module and the resonance module, so that the LLC power supply simulation control chip can be widely applied to high-power occasions.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a resonant driving circuit and a power control system.
Background
At present, the gate drive current of a MOSFET (Metal-O power control system ide-Semiconductor Field-Effect Transistor, metal-oxide semiconductor field effect transistor) integrated by an analog LLC (resonant circuit formed by 2 inductors and 1 capacitor) power control chip in the related art is small, and the MOSFET with large specification cannot be directly driven in high-power application, so that the application scene of the analog LLC power control chip is limited and cannot be widely applied in high-power occasions.
Disclosure of Invention
The utility model mainly aims to provide a resonant driving circuit and a power supply control system, and aims to solve the technical problem that the driving capability of an analog LLC power supply control chip in the related art is insufficient, so that the analog LLC power supply control chip can be widely applied to high-power occasions.
To achieve the above object, the present utility model provides a resonant driving circuit comprising:
the control module is used for outputting driving current;
the voltage input end of the driving module is connected with the output end of the control module, and the driving module is used for increasing the current intensity of the driving current output by the control module and outputting enhanced driving current;
and the input end of the resonance module is connected with the voltage output end of the driving module, and the resonance module is used for receiving the enhanced driving current output by the driving module.
Optionally, the output end of the control module includes: a first output terminal and a second output terminal; the input end of the resonance module comprises: an upper tube gate and a lower tube gate.
Optionally, the driving module includes:
the voltage input end of the first single-channel integrated driver is connected with the first output end, and the voltage output end of the first single-channel integrated driver is connected with the upper tube grid electrode;
the voltage input end of the second single-channel integrated driver is connected with the second output end, and the voltage output end of the second single-channel integrated driver is connected with the lower tube grid electrode.
Optionally, the first single channel integrated driver and the second single channel integrated driver are isolated gate drivers.
Optionally, the driving module includes:
the first voltage input end of the half-bridge integrated driver is connected with the first output end, the first voltage output end of the half-bridge integrated driver is connected with the upper pipe grid electrode, the second voltage input end of the half-bridge integrated driver is connected with the second output end, and the second voltage output end of the half-bridge integrated driver is connected with the lower pipe grid electrode.
Optionally, the half-bridge integrated driver is an isolated gate driver.
Optionally, the driving module includes:
the separating triode totem circuit comprises an upper tube circuit and a lower tube circuit, wherein the input end of the upper tube circuit is connected with the first output end, the output end of the upper tube circuit is connected with the upper tube grid electrode, the input end of the lower tube circuit is connected with the second output end, and the output end of the lower tube circuit is connected with the lower tube grid electrode.
Optionally, the upper transistor circuit includes a first triode and a second triode, wherein a base electrode of the first triode is connected with a base electrode of the second triode, and an emitter electrode of the first triode is connected with an emitter electrode of the second triode; the lower transistor circuit comprises a third triode and a fourth triode, wherein the base electrode of the third triode is connected with the base electrode of the fourth triode, and the emitter electrode of the third triode is connected with the emitter electrode of the fourth triode.
Optionally, the first triode and the third triode are NPN type triodes, and the second triode and the fourth triode are PNP type triodes.
In addition, to achieve the above object, the present utility model also provides a power supply control system including: the power supply is connected with the resonance driving circuit, and the resonance driving circuit is connected with the load.
The utility model provides a resonance driving circuit and a power supply control system, wherein the resonance driving circuit comprises: the control module is used for outputting driving current; the voltage input end of the driving module is connected with the output end of the control module, and the driving module is used for increasing the current intensity of the driving current output by the control module and outputting enhanced driving current; and the input end of the resonance module is connected with the voltage output end of the driving module, and the resonance module is used for receiving the enhanced driving current output by the driving module. According to the utility model, the driving capability of the control module to the resonance module is enhanced by adding the driving module between the control module and the resonance module, the technical problem of insufficient driving capability of the control chip for simulating the LLC power supply in the related technology is solved, and the driving module has the advantages of simple circuit architecture, strong circuit adaptability, high reliability, capability of being matched with different control modules for use, capability of realizing the product application of a larger power section with lower cost and larger popularization and application value.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a resonant driving circuit according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a driving module related to a resonant driving circuit according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of another driving module related to a resonant driving circuit according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of another driving module related to a resonant driving circuit according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a power control system according to an embodiment of the utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should also be appreciated that references to "one embodiment" or "some embodiments" or the like described in the specification of an embodiment of the present utility model mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
At present, the gate drive current of the MOSFET integrated with the analog LLC power supply control chip in the related technology is smaller, and the MOSFET with large specification cannot be directly driven in high-power application, so that the application scene of the analog LLC power supply control chip is limited, and the analog LLC power supply control chip cannot be widely applied to high-power occasions.
Based on this, an embodiment of the present utility model provides a resonant driving circuit and a power control system, where the resonant driving circuit includes: the control module is used for outputting driving current; the voltage input end of the driving module is connected with the output end of the control module, and the driving module is used for increasing the current intensity of the driving current output by the control module and outputting enhanced driving current; and the input end of the resonance module is connected with the voltage output end of the driving module, and the resonance module is used for receiving the enhanced driving current output by the driving module. According to the utility model, the driving module is added between the control module and the resonance module, which is equivalent to adding one driving circuit between the MOSFET gate electrode output of the analog LLC power supply control chip and the MOSFET, so that the driving capability of the analog LLC power supply control chip to the MOSFET is enhanced, the technical problem of insufficient driving capability of the analog LLC power supply control chip in the related technology is solved, and the driving module has the advantages of simple circuit architecture, strong circuit adaptability, high reliability, capability of being matched with different control ICs for use, and capability of realizing the product application of a larger power section with lower cost, and larger popularization and application value.
The resonant driving circuit and the power supply control system provided by the embodiment of the utility model are specifically described through the following embodiments, and the resonant driving circuit in the embodiment of the utility model is described first.
An embodiment of the present utility model provides a resonant driving circuit, referring to fig. 1, fig. 1 is a schematic structural diagram of the resonant driving circuit provided in an embodiment of the present utility model, where the resonant driving circuit includes:
a control module 100, wherein the control module 100 is used for outputting a driving current;
the voltage input end of the driving module 200 is connected with the output end of the control module 100, and the driving module 200 is used for increasing the current intensity of the driving current output by the control module 100 and outputting an enhanced driving current;
and the input end of the resonance module 300 is connected with the voltage output end of the driving module 200, and the resonance module 300 is used for receiving the enhanced driving current output by the driving module 200.
It should be noted that, in the present embodiment, the control module 100 is originally directly connected to the resonance module 300 and is configured to output a driving current to the resonance module 300, but since the MOSFET gate driving current integrated by the LLC power control chip is small, the large-sized MOSFET cannot be directly driven in high-power applications, so that the existing LLC control chip is limited. The driving module 200 is added between the control module 100 and the resonance module 300 in this embodiment to enhance the driving capability of the control module 100 to the resonance module 300.
As an example, the power module 100 may be an LLC analog IC (Integrated Circuit ), and the specific model may be FA6a31N.
In some possible embodiments, the output of the control module 100 includes: a first output terminal and a second output terminal; the input terminal of the resonance module 300 includes: an upper tube gate and a lower tube gate.
It should be noted that, in this embodiment, the output of the control module 100 is divided into a positive output and a negative output, so there are two output ends, where the first output end corresponds to the positive output and the second output end corresponds to the negative output; two MOSFETs for receiving the driving signals, namely an upper tube MOS and a lower tube MOS, exist in the resonance module 300, wherein the G pole of the upper tube MOS is an upper tube grid, and the G pole of the lower tube MOS is a lower tube grid.
The embodiment provides a resonance driving circuit, through increasing driving module between control module and resonance module, be equivalent to increasing a driving circuit between analog LLC power control chip's MOSFET gate pole output and MOSFET, strengthened analog LLC power control chip to MOSFET's driving capability, solved the technical problem that analog LLC power control chip driving capability is not enough among the related art, and the circuit architecture of this driving module is succinct, circuit adaptability is strong, can match different control ICs to use, the reliability is high, can realize the product application of great power section with lower cost, have great popularization and application value.
In some possible embodiments, the driving module 200 includes:
the voltage input end of the first single-channel integrated driver is connected with the first output end, and the voltage output end of the first single-channel integrated driver is connected with the upper tube grid electrode;
the voltage input end of the second single-channel integrated driver is connected with the second output end, and the voltage output end of the second single-channel integrated driver is connected with the lower tube grid electrode.
It should be noted that, in the embodiment, the driving module 200 includes two single-channel integrated drivers as shown in fig. 2, and the two single-channel integrated drivers have the same structure, and each of the two single-channel integrated drivers has 5 pins, pin 1 is connected to the power VCC, pin 2 is grounded, pin 3 is connected to the voltage input terminal vin+ corresponding to pin VIN, pin 4 is connected to the ground, and pin 5 is connected to the voltage output terminal VOUT corresponding to pin OUT; the first single-channel integrated driver differs from the second single-channel integrated driver in that: the first single-channel integrated driver is connected with the first output end of the control module 100 and the upper tube grid electrode of the resonance module 300, namely, is used for transmitting an upper tube driving signal; the second single-channel integrated driver is connected to the second output terminal of the control module 100 and the down tube gate of the resonance module 300, i.e., is used for transmitting the down tube driving signal.
As one example, the first single channel integrated driver and the second single channel integrated driver are UCC27517DBVR isolated gate drivers.
Referring to fig. 3, in some possible embodiments, the driving module 200 includes:
the first voltage input end VIN1 of the half-bridge integrated driver U2 is connected with the first output end, the first voltage output end VOUT1 of the half-bridge integrated driver U2 is connected with the upper pipe grid electrode, the second voltage input end VIN2 of the half-bridge integrated driver U2 is connected with the second output end, and the second voltage output end VOUT2 of the half-bridge integrated driver U2 is connected with the lower pipe grid electrode.
It should be noted that, in this embodiment, the driving module 200 includes a half-bridge integrated driver U2 as shown in fig. 3, which has 14 pins, pin HI 1 corresponds to the first voltage input terminal VIN1, pin LI 2 corresponds to the second voltage input terminal VIN2, pin VSS 3 and pin COM 5 are grounded GND, pin LO 6 corresponds to the second voltage output terminal VOUT2, pin VDD 7 is connected to the power VCC, pin HS 11 is connected to one end of the capacitor C1, pin HO 12 corresponds to the first voltage output terminal VOUT1, pin HB 13 is connected to the other end of the capacitor C1 and one end of the diode DB1, the other end of the diode DB1 is connected to the power VCC, and pins EN/NC 4, pin NC 8, pin NC 9, pin NC 10 and pin NC are all connected in air.
As an example, the half-bridge integrated driver is a UCC27714DR isolated gate driver.
Referring to fig. 4, in some possible embodiments, the driving module 200 includes:
the separating triode totem circuit comprises an upper tube circuit 201 and a lower tube circuit 202, wherein the input end of the upper tube circuit 201 is connected with the first output end, the output end of the upper tube circuit 201 is connected with the upper tube grid electrode, the input end of the lower tube circuit 202 is connected with the second output end, and the output end of the lower tube circuit 202 is connected with the lower tube grid electrode.
It can be understood that, in the embodiment shown in fig. 4, the driving module 200 includes a split transistor totem circuit, and the split transistor totem circuit is composed of an upper transistor circuit 201 and a lower transistor circuit 202, and the connection manner between the split transistor totem circuit and the control module 100 and the resonance module 300 can also be known from fig. 4, which is not repeated herein.
In some possible embodiments, the upper transistor circuit 201 includes a first transistor Q1 and a second transistor Q2, a base of the first transistor Q1 is connected to a base of the second transistor Q2, and an emitter of the first transistor Q1 is connected to an emitter of the second transistor Q2; the lower transistor circuit 202 includes a third transistor Q3 and a fourth transistor Q4, where a base of the third transistor Q3 is connected to a base of the fourth transistor Q4, and an emitter of the third transistor Q3 is connected to an emitter of the fourth transistor Q4.
As an example, the first transistor Q1 and the third transistor Q3 are NPN transistors, and the second transistor Q2 and the fourth transistor Q4 are PNP transistors.
In addition, an embodiment of the present utility model further provides a power control system, referring to fig. 5, fig. 5 is a schematic structural diagram of the power control system according to an embodiment of the present utility model, as shown in fig. 5, where the power control system includes: a power supply 01, a load 03 and a resonant drive circuit 02 according to any of the embodiments described above, the power supply 01 being connected to the resonant drive circuit 02, the resonant drive circuit 02 being connected to the load 03.
As an example, the power supply control system can be applied to various electronic devices requiring constant current control, such as multi-channel LED constant current driving, electronic loads and the like, and has strong practicability and popularity.
The power supply control system provided in this embodiment and the resonant driving circuit provided in the foregoing embodiments belong to the same technical concept, and specific circuit structures and principles of the resonant driving circuit refer to the resonant driving circuits provided in the foregoing embodiments for details, which are not described in detail herein, and are all within the protection scope of this embodiment.
It should be noted that the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the embodiments, and when the technical solutions are contradictory or cannot be implemented, those skilled in the art should consider that the technical solutions are not combined, and are not within the scope of protection claimed by the present utility model.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A resonant drive circuit, the resonant drive circuit comprising:
the control module is used for outputting driving current;
the voltage input end of the driving module is connected with the output end of the control module, and the driving module is used for increasing the current intensity of the driving current output by the control module and outputting enhanced driving current;
and the input end of the resonance module is connected with the voltage output end of the driving module, and the resonance module is used for receiving the enhanced driving current output by the driving module.
2. The resonant drive circuit of claim 1, wherein the output of the control module comprises: a first output terminal and a second output terminal; the input end of the resonance module comprises: an upper tube gate and a lower tube gate.
3. The resonant drive circuit of claim 2, wherein the drive module comprises:
the voltage input end of the first single-channel integrated driver is connected with the first output end, and the voltage output end of the first single-channel integrated driver is connected with the upper tube grid electrode;
the voltage input end of the second single-channel integrated driver is connected with the second output end, and the voltage output end of the second single-channel integrated driver is connected with the lower tube grid electrode.
4. The resonant drive circuit of claim 3, wherein the first single channel integrated driver and the second single channel integrated driver are isolated gate drivers.
5. The resonant drive circuit of claim 2, wherein the drive module comprises:
the first voltage input end of the half-bridge integrated driver is connected with the first output end, the first voltage output end of the half-bridge integrated driver is connected with the upper pipe grid electrode, the second voltage input end of the half-bridge integrated driver is connected with the second output end, and the second voltage output end of the half-bridge integrated driver is connected with the lower pipe grid electrode.
6. The resonant drive circuit of claim 5, wherein the half-bridge integrated driver is an isolated gate driver.
7. The resonant drive circuit of claim 2, wherein the drive module comprises:
the separating triode totem circuit comprises an upper tube circuit and a lower tube circuit, wherein the input end of the upper tube circuit is connected with the first output end, the output end of the upper tube circuit is connected with the upper tube grid electrode, the input end of the lower tube circuit is connected with the second output end, and the output end of the lower tube circuit is connected with the lower tube grid electrode.
8. The resonant drive circuit of claim 7, wherein the upper transistor circuit comprises a first transistor and a second transistor, a base of the first transistor being connected to a base of the second transistor, an emitter of the first transistor being connected to an emitter of the second transistor; the lower transistor circuit comprises a third triode and a fourth triode, wherein the base electrode of the third triode is connected with the base electrode of the fourth triode, and the emitter electrode of the third triode is connected with the emitter electrode of the fourth triode.
9. The resonant drive circuit of claim 8, wherein the first transistor and the third transistor are NPN transistors, and the second transistor and the fourth transistor are PNP transistors.
10. A power control system, the power control system comprising: a power supply, a load and a resonant drive circuit according to any one of claims 1 to 9, the power supply being connected to the resonant drive circuit, the resonant drive circuit being connected to the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321714162.2U CN219893172U (en) | 2023-06-30 | 2023-06-30 | Resonant driving circuit and power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321714162.2U CN219893172U (en) | 2023-06-30 | 2023-06-30 | Resonant driving circuit and power supply control system |
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| Publication Number | Publication Date |
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| CN219893172U true CN219893172U (en) | 2023-10-24 |
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| CN202321714162.2U Active CN219893172U (en) | 2023-06-30 | 2023-06-30 | Resonant driving circuit and power supply control system |
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- 2023-06-30 CN CN202321714162.2U patent/CN219893172U/en active Active
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