CN216056804U - Multi-power supply cooperative control power circuit - Google Patents
Multi-power supply cooperative control power circuit Download PDFInfo
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- CN216056804U CN216056804U CN202122260680.9U CN202122260680U CN216056804U CN 216056804 U CN216056804 U CN 216056804U CN 202122260680 U CN202122260680 U CN 202122260680U CN 216056804 U CN216056804 U CN 216056804U
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- voltage conversion
- conversion module
- power supply
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 85
- 238000004146 energy storage Methods 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model provides a multi-power supply cooperative control power supply circuit, and belongs to the field of power supply circuits. The multi-stage voltage reduction circuit comprises a power input module and a multi-stage voltage reduction circuit connected with the output end of the power input module, wherein the multi-stage voltage reduction circuit comprises a first voltage conversion module, a second voltage conversion module and a plurality of stages of third voltage conversion modules, the output end of the power input module is respectively connected with the input ends of the first voltage conversion module and the second voltage conversion module, the output end of the first voltage conversion module outputs a first voltage, the output end of the second voltage conversion module outputs a second voltage, the enable end of the second voltage conversion module is connected with a power control pin of a controller, the input end of the third voltage conversion module is connected with the output end of the first voltage conversion module, and the enable end is connected with the output end of the second voltage conversion module or the output end of the preceding stage third voltage conversion module. The utility model has the beneficial effects that: the control is step by step, the circuit is more reliable, and is convenient and energy-saving.
Description
Technical Field
The utility model relates to a display screen structure, in particular to a multi-power supply cooperative control power supply circuit.
Background
Because the chip and external device are more in the accuse in on-vehicle, and the voltage and the electric current that different chips and equipment need are also different, consequently, the mainboard power supply generally can provide different voltage sources and satisfy its user demand, to the management of power, at present, generally adopts the switch of each voltage source of main control board control. The voltage source is controlled through the main control board, on one hand, a plurality of control pins are needed, on the other hand, the main control board is needed to monitor the service condition of each device or chip all the time, the performance and the power consumption of the main control board can be influenced to a certain extent, and therefore the overall energy consumption of the vehicle-mounted central control is increased, and energy is not saved enough.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a multi-power supply cooperative control power supply circuit.
The multi-stage voltage reduction circuit comprises a power input module and a multi-stage voltage reduction circuit connected with the output end of the power input module, wherein the multi-stage voltage reduction circuit comprises a first voltage conversion module, a second voltage conversion module and a plurality of stages of third voltage conversion modules, the output end of the power input module is respectively connected with the input ends of the first voltage conversion module and the second voltage conversion module, the output end of the first voltage conversion module outputs a first voltage, the output end of the second voltage conversion module outputs a second voltage, the enable end of the second voltage conversion module is connected with a power control pin of a controller, the input end of the third voltage conversion module is connected with the output end of the first voltage conversion module, and the enable end is connected with the output end of the second voltage conversion module or the output end of the preceding stage third voltage conversion module.
The utility model is further improved and also comprises an energy storage module, wherein the input end of the energy storage module is connected with the input end of the power input module.
The utility model is further improved, the energy storage module comprises an isolation unit and a plurality of farad capacitors which are arranged at the rear stage of the isolation unit and are connected in series, and two ends of the isolation unit and two ends of the flange capacitor are respectively connected with a protection resistor in parallel.
The utility model is further improved and also comprises a fourth voltage conversion module, wherein the input end of the fourth voltage conversion module is connected with the output end of the power input module, the output end of the fourth voltage conversion module outputs 5V voltage, and the enabling end of the fourth voltage conversion module is connected with the output end of the second voltage conversion module.
The utility model is further improved, and the power input module comprises a fuse FB21 and a filtering unit arranged at the output end of the fuse FB 21.
The utility model is further improved, the first voltage conversion module and the second voltage conversion module both adopt voltage-reduction adjustable switching regulator chips, the first voltage conversion module converts a 12V power supply into 5V output, and the second voltage conversion module converts the 12V power supply into 3.3V output.
The utility model is further improved, and a plurality of third voltage conversion modules all adopt a synchronous buck regulator MP2112GJ to step down a 5V power supply into different voltages and current outputs.
Compared with the prior art, the utility model has the beneficial effects that: the multi-power supply cooperative control is more convenient to use, the pin consumption of the main control board is saved, the single control of the main control board is not needed, and the tasks of the main control board are reduced, so that the performance of the main control board is improved, and the power consumption is reduced; in addition, the circuit is more stable and reliable due to pure circuit control.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a power input module;
FIG. 3 is a schematic diagram of an energy storage module circuit;
FIG. 4 is a first voltage conversion module;
FIG. 5 is a schematic circuit diagram of a second voltage conversion module;
FIGS. 6 and 7 are schematic circuit diagrams of a third voltage conversion module;
fig. 8 is a schematic circuit diagram of a fourth voltage conversion module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the present invention includes a power input module and a multi-stage voltage-reducing circuit connected to an output end of the power input module, where the multi-stage voltage-reducing circuit includes a first voltage conversion module, a second voltage conversion module and a plurality of stages of third voltage conversion modules, an output end of the power input module is connected to input ends of the first voltage conversion module and the second voltage conversion module, an output end of the first voltage conversion module outputs a first voltage, an output end of the second voltage conversion module outputs a second voltage, an enable end of the second voltage conversion module is connected to a power control pin of a controller, an input end of the third voltage conversion module is connected to an output end of the first voltage conversion module, and an enable end is connected to an output end of the second voltage conversion module or an output end of a preceding stage of the third voltage conversion module.
The power supply further comprises a fourth voltage conversion module, wherein the input end of the fourth voltage conversion module is connected with the output end of the power supply input module, the output end of the fourth voltage conversion module outputs 5V voltage, and the enabling end of the fourth voltage conversion module is connected with the output end of the second voltage conversion module. And a 5V power supply is additionally arranged to independently supply power for uninterrupted working equipment, such as a GPS module and the like.
The power supply also comprises an energy storage module, and the input end of the energy storage module is connected with the input end of the power supply input module. When the periphery is powered off, the power supply is used as a standby power supply to supply power to the system, so that the system can be maintained to work for a certain time, and the damage to the system and the data loss caused by sudden power failure and shutdown are prevented.
As shown in fig. 3, the energy storage module of this example includes a diode D11, and 5 farad capacitors connected in series and disposed at the positive terminal of the diode D11, and the two terminals of the isolation unit and the flange capacitor are respectively connected in parallel with a protection resistor. The farad capacitor not only can be used as a large-capacitance storage battery for power storage, but also can be used for filtering a circuit controlled in a vehicle.
As shown in fig. 2, the power input module of this embodiment includes a fuse FB21 and a filter unit disposed at the output end of the fuse FB 21.
As shown in fig. 4, 5 and 8, in this embodiment, the first voltage conversion module, the second voltage conversion module and the fourth voltage conversion module all use buck adjustable switching regulator chips, the first voltage conversion module converts a 12V power supply into 5V output, the second voltage conversion module converts the 12V power supply into 3.3V output, and the output can be adjusted to other power supplies according to requirements.
As shown in fig. 6 and 7, in this example, two third voltage conversion modules are provided, each of which uses a synchronous buck regulator MP2112GJ, the first one reduces the voltage of the 5V power supply to 1.5V and 1.2V outputs, respectively, the enable terminal is controlled by the 3.3V power supply, the second one rectifies the current to 2A and 2.73A outputs, and the enable terminal is also controlled by 3.3V. In this embodiment, 1.5V and 1.2V can be set as different buck chip control outputs, or the 1.5V output can control the switch of the 1.2V power supply.
If the chip also needs other power supplies, one or more third voltage conversion modules can be additionally arranged and controlled by different voltage sources according to requirements.
In the embodiment, only the enabling end of the second voltage conversion module is connected with the control pin of the main control board, and the main control board closes the 3.3V power output in the energy-saving state, so that other peripheral equipment or chip power supplies are uniformly closed, and the energy-saving effect can be realized through hardware.
Compared with the prior art, the utility model is controlled cooperatively by various power supplies, is more convenient to use, saves the pin consumption of the main control board, does not need the single control of the main control board, and lightens the tasks of the main control board, thereby improving the performance of the main control board and reducing the power consumption; in addition, the circuit is more stable and reliable due to pure circuit control.
The above-described embodiments are intended to be illustrative, and not restrictive, of the utility model, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A multi-power supply cooperative control power supply circuit is characterized in that: the multistage voltage reduction circuit comprises a power input module and a multistage voltage reduction circuit connected with the output end of the power input module, wherein the multistage voltage reduction circuit comprises a first voltage conversion module, a second voltage conversion module and a plurality of stages of third voltage conversion modules, the output end of the power input module is connected with the input ends of the first voltage conversion module and the second voltage conversion module respectively, the output end of the first voltage conversion module outputs a first voltage, the output end of the second voltage conversion module outputs a second voltage, the enabling end of the second voltage conversion module is connected with a power control pin of a controller, the input end of the third voltage conversion module is connected with the output end of the first voltage conversion module, and the enabling end is connected with the output end of the second voltage conversion module or the output end of the preceding stage of the third voltage conversion module.
2. The multi-power supply cooperative control power supply circuit according to claim 1, characterized in that: the energy storage module is arranged, and the input end of the energy storage module is connected with the input end of the power input module.
3. The multi-power supply cooperative control power supply circuit according to claim 2, characterized in that: the energy storage module comprises an isolation unit and a plurality of serially connected farad capacitors arranged at the rear stage of the isolation unit, and the two ends of the isolation unit and the two ends of the flange capacitor are respectively connected with a protection resistor in parallel.
4. The multi-power supply cooperative control power supply circuit according to claim 1, characterized in that: the power supply further comprises a fourth voltage conversion module, wherein the input end of the fourth voltage conversion module is connected with the output end of the power supply input module, the output end of the fourth voltage conversion module outputs 5V voltage, and the enabling end of the fourth voltage conversion module is connected with the output end of the second voltage conversion module.
5. A multi-power supply cooperative control power supply circuit according to any one of claims 1 to 4, characterized in that: the power input module comprises a fuse FB21 and a filtering unit arranged at the output end of the fuse FB 21.
6. A multi-power supply cooperative control power supply circuit according to any one of claims 1 to 4, characterized in that: the first voltage conversion module and the second voltage conversion module both adopt voltage-reducing adjustable switching regulator chips, the first voltage conversion module converts a 12V power supply into 5V output, and the second voltage conversion module converts the 12V power supply into 3.3V output.
7. The multi-power supply cooperative control power supply circuit according to claim 6, characterized in that: the third voltage conversion modules all adopt a synchronous buck regulator MP2112GJ to step down the 5V power supply into different voltage and current outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260680.9U CN216056804U (en) | 2021-09-17 | 2021-09-17 | Multi-power supply cooperative control power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260680.9U CN216056804U (en) | 2021-09-17 | 2021-09-17 | Multi-power supply cooperative control power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056804U true CN216056804U (en) | 2022-03-15 |
Family
ID=80537895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122260680.9U Expired - Fee Related CN216056804U (en) | 2021-09-17 | 2021-09-17 | Multi-power supply cooperative control power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056804U (en) |
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2021
- 2021-09-17 CN CN202122260680.9U patent/CN216056804U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |