CN215772914U - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN215772914U CN215772914U CN202122021170.6U CN202122021170U CN215772914U CN 215772914 U CN215772914 U CN 215772914U CN 202122021170 U CN202122021170 U CN 202122021170U CN 215772914 U CN215772914 U CN 215772914U
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Abstract
The present invention provides a power supply device, including: the voltage regulation circuit comprises a voltage input module, a voltage reduction module, a voltage regulation module and a microcontroller; the input end of the voltage input module is connected with an external power supply when in use; the voltage reduction module is used for reducing the voltage output by the voltage input module and providing working voltage for the voltage regulation module or/and the first rear-stage load; the voltage regulating module is used for outputting different voltage values according to various control signals output by the microcontroller, so that the different voltage values provide working voltage for the second rear-stage load; the problem that power supply devices in the related art are low in universality and narrow in applicable environment is solved, and the voltage range output by the power supply devices is enlarged, so that the application scenes of the power supply devices are improved, and the actual application requirements are met.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to a power supply device.
Background
Various high integrated data transmission board cards usually require to input various different voltage values at present for supplying power for various chips or I0 interfaces in the transmission board card, but the existing power module can only output a single voltage value, and usually adopts LDO special chips to realize step-by-step voltage reduction processing to achieve the purpose of outputting various fixed voltage values, but has the problems of weak universality and narrow applicable environment, and can not meet the requirements of practical application.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the power supply device provided by the utility model solves the problems of low universality and narrow applicable environment of the power supply device in the related art, and increases the voltage range output by the power supply device, thereby improving the application scene of the power supply device and meeting the actual application requirements.
The present invention provides a power supply device, including: the voltage regulation circuit comprises a voltage input module, a voltage reduction module, a voltage regulation module and a microcontroller; the input end of the voltage input module is connected with an external power supply when in use; the input end of the voltage reduction module is connected with the output end of the voltage input module, the output end of the voltage reduction module is connected with the power supply end of the voltage regulation module, and the output end of the voltage reduction module is also connected with a first rear-stage load when in use, is used for reducing the voltage output by the voltage input module and provides working voltage for the voltage regulation module or/and the first rear-stage load; the input end of the voltage regulation module is connected with the output end of the voltage input module, the control end of the voltage regulation module is connected with the microcontroller, and the output end of the voltage regulation module is connected with the second rear-stage load when in use and used for outputting different voltage values according to various control signals output by the microcontroller so that the different voltage values provide working voltage for the second rear-stage load.
Optionally, the voltage regulation module comprises: the voltage stabilizing chip, the digital potentiometer chip, the first inductor, the first resistor and the second resistor; the input end of the voltage stabilizing chip is connected with the output end of the voltage input module, the output end of the voltage stabilizing chip is connected with the first end of the first inductor, and the second end of the first inductor is the output end of the voltage regulating module; the power supply end of the digital potentiometer chip is connected with the output end of the voltage reduction module, the first control end and the second control end of the digital potentiometer chip are respectively connected with the microcontroller, the first output end of the digital potentiometer chip is connected with the second end of the first inductor, and the second output end of the digital potentiometer chip is connected with the first end of the first resistor; the second end of the first resistor is connected with the first end of the second resistor, the second end of the first resistor is also connected with the reference voltage end of the voltage stabilizing chip, and the second end of the second resistor is grounded.
Optionally, the voltage regulation module further comprises: and one end of the resistor connector is connected with the first end of the first resistor, and the second end of the resistor connector is connected with the second end of the first inductor and used for connecting an external resistor with the first resistor in series.
Optionally, the voltage input module includes: a battery connector, a first end of which is grounded, and a second end of which is an output end of the voltage input module and is used for providing input voltage through an external battery; and the output end of the power plug is connected with the second end of the battery connector and is used for providing input voltage through an external socket.
Optionally, the voltage input module further comprises: a first end of the start-stop switch is connected with a second end of the battery connector; the first end of the fuse is connected with the second end of the start-stop switch, and the second end of the fuse is connected with the input end of the voltage reduction module; and the first end of the TVS diode is connected with the second end of the fuse, and the second end of the TVS diode is grounded.
Optionally, the power supply device further includes: and the first end of the reverse connection preventing module is connected with the output end of the voltage input module, and the second end of the reverse connection preventing module is connected with the input end of the voltage reducing module.
Optionally, the reverse connection prevention module comprises: the field effect transistor, the third resistor, the fourth resistor and the rectifier diode; the drain electrode of the field effect transistor is connected with the output end of the voltage input module, the grid electrode of the field effect transistor is grounded through the third resistor, and the source electrode of the field effect transistor is connected with the input end of the voltage reduction module; the first end of the fourth resistor is connected with the source electrode of the field effect transistor, the second end of the fourth resistor is connected with the grid electrode of the field effect transistor, the cathode of the rectifier diode is connected with the source electrode of the field effect transistor, and the anode of the rectifier diode is connected with the grid electrode of the field effect transistor.
Optionally, the reverse connection prevention module further comprises: a fifth resistor, a first capacitor and a second capacitor; the first end of the fifth resistor is connected with the drain electrode of the field effect transistor, the second end of the fifth resistor is connected with the first end of the first capacitor, the second end of the first capacitor is connected with the source electrode of the field effect transistor, the first end of the second capacitor is connected with the source electrode of the field effect transistor, and the second end of the second capacitor is connected with the grid electrode of the field effect transistor.
Optionally, the voltage reduction module includes: the input end of the first voltage reduction module is connected with the output end of the voltage input module, and the output end of the first voltage reduction module is connected with the power supply end of the voltage regulation module; and the input end of the second voltage reduction module is connected with the output end of the first voltage reduction module, and the output end of the second voltage reduction module is connected with the power supply end of the microcontroller.
Optionally, the power supply device further includes: a sixth resistor and a light emitting diode; the first end of the sixth resistor is connected with the output end of the voltage regulating module, the second end of the sixth resistor is connected with the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.
Compared with the prior art, the utility model has the following beneficial effects:
in the embodiment, the voltage output by the external power supply is introduced through the voltage input module, and the input voltage is reduced according to the voltage reduction module to provide the working voltage for the voltage regulation module or/and the first rear-stage load, so that the power supply device can be applied to a circuit scene in which the working voltage of the rear-stage load is relatively fixed. Furthermore, the voltage regulation module in this embodiment outputs various different voltage values according to various control signals output by the microcontroller, so that the voltage value output by the power supply device can be automatically regulated according to different voltage requirements of a rear-stage load, the problems of poor universality and narrow applicable environment of the power supply device in the related art are solved, the voltage range output by the power supply device is increased, the application scene of the power supply device is further improved, and the actual application requirements are met.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a power supply device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Like numbered functional units in the examples of the present invention have the same and similar structure and function.
Example one
Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention, and as shown in fig. 1, a power supply device 100 according to the embodiment includes:
a voltage input module 110, a voltage reduction module 120, a voltage regulation module 130, and a microcontroller 140;
the input end of the voltage input module 110 is connected with an external power supply 200 when in use;
the input end of the voltage reduction module 120 is connected to the output end of the voltage input module 110, the output end of the voltage reduction module 120 is connected to the power end of the voltage regulation module 130, and the output end of the voltage reduction module 120 is connected to the first rear-stage load 300 when in use, so as to reduce the voltage output by the voltage input module 110 and provide working voltage for the voltage regulation module 130 or/and the first rear-stage load 300;
the input end of the voltage regulation module 130 is connected to the output end of the voltage input module 110, the control end of the voltage regulation module 130 is connected to the microcontroller 140, and the output end of the voltage regulation module 130 is connected to the second rear-stage load 400 during use, and is configured to output different voltage values according to various control signals output by the microcontroller 140, so that the different voltage values provide working voltages for the second rear-stage load 400.
It should be noted that, in this embodiment, the voltage output by the external power supply 200 is introduced through the voltage input module 110, and then the voltage reduction module 120 reduces the input voltage and provides the working voltage for the voltage regulation module 130 or/and the first rear-stage load, so that the power supply apparatus can be applied to a circuit scenario where the working voltage of the rear-stage load is relatively fixed.
Further, in this embodiment, the voltage adjusting module 130 outputs various different voltage values according to various control signals output by the microcontroller 140, so that the voltage value output by the power supply device can be automatically adjusted according to different voltage requirements of a rear-stage load, the problems of poor universality and narrow applicable environment of the power supply device in the related art are solved, the voltage range output by the power supply device is expanded, the application scenario of the power supply device is further improved, and the actual application requirements are met.
Example two
Fig. 2 is a schematic circuit diagram of a power supply apparatus according to an embodiment of the present invention, and as shown in fig. 2, the voltage regulation module includes:
the voltage stabilizing chip U1, the digital potentiometer chip U2, a first inductor L1, a first resistor R1 and a second resistor R2; the input end of the voltage stabilizing chip U1 is connected with the output end of the voltage input module, the output end of the voltage stabilizing chip U1 is connected with the first end of the first inductor L1, and the second end of the first inductor L1 is the output end of the voltage regulating module; a power supply end of the digital potentiometer chip U2 is connected to an output end of the voltage reduction module, a first control end and a second control end of the digital potentiometer chip U2 are respectively connected to the microcontroller, a first output end of the digital potentiometer chip U2 is connected to a second end of the first inductor L1, and a second output end of the digital potentiometer chip U2 is connected to a first end of the first resistor R1; the second end of the first resistor R1 is connected with the first end of the second resistor R2, the second end of the first resistor R1 is also connected with the reference voltage end of the voltage stabilizing chip U1, and the second end of the second resistor R2 is grounded.
It should be noted that, as shown in fig. 2, the first control end and the second control end of the digital potentiometer chip U2 are respectively a pin 3 and a pin 4, and the digital potentiometer chip U2 is connected to the microcontroller through the pin 3 and the pin 4, when the pin 3 and the pin 4 receive different level signals simultaneously, the digital potentiometer chip U2 outputs different resistance values through the pin 5 and the pin 6, which is equivalent to the digital potentiometer chip U2 is a variable resistor, and the variable resistor is connected in series with the first resistor R1 and the second resistor R2 to divide the voltage, so that the voltage adjusting module outputs different voltage values according to the different resistance values output by the digital potentiometer chip U2, thereby achieving automatic adjustment of the output voltage.
In another embodiment of the present invention, the voltage regulation module further comprises:
one end of the resistive connector P1 is connected to a first end of the first resistor R1, and a second end of the resistive connector P1 is connected to a second end of the first inductor L1, so that an external resistor is connected in series with the first resistor R1.
It should be noted that the resistor connector P1 may be connected to external resistors with different resistances, so that the external resistors with different resistances are connected in series with the first resistor R1 to divide the voltage, thereby adjusting the output voltage of the voltage adjustment module; in this embodiment, the voltage range output by the voltage regulating module is further increased by the matched voltage division of the resistor connector P1 and the digital potentiometer chip U2.
In this embodiment, the voltage input module includes:
a battery connector P2, a first end of the battery connector P2 being connected to ground, a second end of the battery connector P2 being an output end of the voltage input module for providing an input voltage through an external battery; a power plug having an output terminal connected to the second terminal of the battery connector P2 for providing an input voltage through an external outlet.
It should be noted that, in order to improve the stability and application scenario of the input power, the present embodiment provides the input voltage through the external battery and the external socket via the battery connector P2 and the power plug, respectively.
In another embodiment of the present invention, the voltage input module further includes: a start-stop switch S1, a first end of the start-stop switch S1 being connected to a second end of the battery connector P2; a fuse F1, wherein a first end of the fuse F1 is connected with a second end of the start-stop switch S1, and a second end of the fuse F1 is connected with an input end of the voltage reduction module; a TVS diode D1, a first terminal of the TVS diode D1 is connected to the second terminal of the fuse F1, and a second terminal of the TVS diode D1 is grounded.
It should be noted that the start-stop switch S1 is used to control the operating state of the power supply device, the fuse F1 is used to prevent overvoltage and overcurrent from damaging the circuit device, and the TVS diode D1 is used as an anti-surge protection device.
In another embodiment of the present invention, the power supply device further includes: and a reverse connection prevention module 150, wherein a first end of the reverse connection prevention module 150 is connected with the output end of the voltage input module, and a second end of the reverse connection prevention module 150 is connected with the input end of the voltage reduction module.
In this embodiment, the reverse connection prevention module 150 includes: the field effect transistor Q1, the third resistor R3, the fourth resistor R4 and the rectifier diode D2; the drain of the field effect transistor Q1 is connected with the output end of the voltage input module, the gate of the field effect transistor Q1 is grounded through the third resistor R3, and the source of the field effect transistor Q1 is connected with the input end of the voltage reduction module; a first end of the fourth resistor R4 is connected to the source of the fet Q1, a second end of the fourth resistor R4 is connected to the gate of the fet Q1, a cathode of the rectifier diode D2 is connected to the source of the fet Q1, and an anode of the rectifier diode D2 is connected to the gate of the fet Q1.
In this embodiment, the reverse connection prevention module 150 further includes: a fifth resistor R5, a first capacitor C1 and a second capacitor C2; a first end of the fifth resistor R5 is connected to the drain of the fet Q1, a second end of the fifth resistor R5 is connected to a first end of the first capacitor C1, a second end of the first capacitor C1 is connected to the source of the fet Q1, a first end of the second capacitor C2 is connected to the source of the fet Q1, and a second end of the second capacitor C2 is connected to the gate of the fet Q1.
In another embodiment of the present invention, the voltage dropping module includes: the input end of the first voltage reduction module is connected with the output end of the voltage input module, and the output end of the first voltage reduction module is connected with the power supply end of the voltage regulation module; and the input end of the second voltage reduction module is connected with the output end of the first voltage reduction module, and the output end of the second voltage reduction module is connected with the power supply end of the microcontroller.
It should be noted that, in order to further increase the application range of the power supply device, the first voltage-reducing module and the second voltage-reducing module output different fixed voltage values, so that different voltage requirements of a rear-stage load are met.
In another embodiment of the present invention, the power supply device further includes: a sixth resistor R6 and a light emitting diode D3; a first end of the sixth resistor R6 is connected to the output end of the voltage regulating module, a second end of the sixth resistor R6 is connected to the anode of the led D3, and the cathode of the led D3 is grounded.
It should be noted that, in this embodiment, the operating state of the power supply device can be intuitively reflected through the display state of the light emitting diode.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A power supply device characterized by comprising:
the voltage regulation circuit comprises a voltage input module, a voltage reduction module, a voltage regulation module and a microcontroller;
the input end of the voltage input module is connected with an external power supply when in use;
the input end of the voltage reduction module is connected with the output end of the voltage input module, the output end of the voltage reduction module is connected with the power supply end of the voltage regulation module, and the output end of the voltage reduction module is also connected with a first rear-stage load when in use, is used for reducing the voltage output by the voltage input module and provides working voltage for the voltage regulation module or/and the first rear-stage load;
the input end of the voltage regulation module is connected with the output end of the voltage input module, the control end of the voltage regulation module is connected with the microcontroller, and the output end of the voltage regulation module is connected with the second rear-stage load when in use and used for outputting different voltage values according to various control signals output by the microcontroller so that the different voltage values provide working voltage for the second rear-stage load.
2. The power supply apparatus of claim 1, wherein the voltage regulation module comprises:
the voltage stabilizing chip, the digital potentiometer chip, the first inductor, the first resistor and the second resistor;
the input end of the voltage stabilizing chip is connected with the output end of the voltage input module, the output end of the voltage stabilizing chip is connected with the first end of the first inductor, and the second end of the first inductor is the output end of the voltage regulating module;
the power supply end of the digital potentiometer chip is connected with the output end of the voltage reduction module, the first control end and the second control end of the digital potentiometer chip are respectively connected with the microcontroller, the first output end of the digital potentiometer chip is connected with the second end of the first inductor, and the second output end of the digital potentiometer chip is connected with the first end of the first resistor;
the second end of the first resistor is connected with the first end of the second resistor, the second end of the first resistor is also connected with the reference voltage end of the voltage stabilizing chip, and the second end of the second resistor is grounded.
3. The power supply apparatus of claim 2, wherein the voltage regulation module further comprises:
and one end of the resistor connector is connected with the first end of the first resistor, and the second end of the resistor connector is connected with the second end of the first inductor and used for connecting an external resistor with the first resistor in series.
4. The power supply apparatus of claim 1, wherein the voltage input module comprises:
a battery connector, a first end of which is grounded, and a second end of which is an output end of the voltage input module and is used for providing input voltage through an external battery;
and the output end of the power plug is connected with the second end of the battery connector and is used for providing input voltage through an external socket.
5. The power supply apparatus of claim 4, wherein the voltage input module further comprises:
a first end of the start-stop switch is connected with a second end of the battery connector;
the first end of the fuse is connected with the second end of the start-stop switch, and the second end of the fuse is connected with the input end of the voltage reduction module;
and the first end of the TVS diode is connected with the second end of the fuse, and the second end of the TVS diode is grounded.
6. The power supply device according to claim 1, characterized in that the power supply device further comprises:
and the first end of the reverse connection preventing module is connected with the output end of the voltage input module, and the second end of the reverse connection preventing module is connected with the input end of the voltage reducing module.
7. The power supply apparatus according to claim 6, wherein the reverse connection preventing module comprises:
the field effect transistor, the third resistor, the fourth resistor and the rectifier diode;
the drain electrode of the field effect transistor is connected with the output end of the voltage input module, the grid electrode of the field effect transistor is grounded through the third resistor, and the source electrode of the field effect transistor is connected with the input end of the voltage reduction module; the first end of the fourth resistor is connected with the source electrode of the field effect transistor, the second end of the fourth resistor is connected with the grid electrode of the field effect transistor, the cathode of the rectifier diode is connected with the source electrode of the field effect transistor, and the anode of the rectifier diode is connected with the grid electrode of the field effect transistor.
8. The power supply apparatus according to claim 7, wherein the reverse-connection preventing module further comprises:
a fifth resistor, a first capacitor and a second capacitor;
the first end of the fifth resistor is connected with the drain electrode of the field effect transistor, the second end of the fifth resistor is connected with the first end of the first capacitor, the second end of the first capacitor is connected with the source electrode of the field effect transistor, the first end of the second capacitor is connected with the source electrode of the field effect transistor, and the second end of the second capacitor is connected with the grid electrode of the field effect transistor.
9. The power supply device of claim 1, wherein the voltage-reducing module comprises:
the input end of the first voltage reduction module is connected with the output end of the voltage input module, and the output end of the first voltage reduction module is connected with the power supply end of the voltage regulation module;
and the input end of the second voltage reduction module is connected with the output end of the first voltage reduction module, and the output end of the second voltage reduction module is connected with the power supply end of the microcontroller.
10. The power supply device according to any one of claims 1 to 9, characterized in that the power supply device further comprises:
a sixth resistor and a light emitting diode;
the first end of the sixth resistor is connected with the output end of the voltage regulating module, the second end of the sixth resistor is connected with the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122021170.6U CN215772914U (en) | 2021-08-25 | 2021-08-25 | Power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122021170.6U CN215772914U (en) | 2021-08-25 | 2021-08-25 | Power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215772914U true CN215772914U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122021170.6U Active CN215772914U (en) | 2021-08-25 | 2021-08-25 | Power supply device |
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| Country | Link |
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| CN (1) | CN215772914U (en) |
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2021
- 2021-08-25 CN CN202122021170.6U patent/CN215772914U/en active Active
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