CN213305037U - Low-standby-power-consumption USB charging circuit - Google Patents
Low-standby-power-consumption USB charging circuit Download PDFInfo
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- CN213305037U CN213305037U CN202022409425.1U CN202022409425U CN213305037U CN 213305037 U CN213305037 U CN 213305037U CN 202022409425 U CN202022409425 U CN 202022409425U CN 213305037 U CN213305037 U CN 213305037U
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- charging
- switch control
- mos tube
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a low standby power consumption USB charging circuit, which comprises a charging conversion circuit, a diode isolation circuit, an MOS tube switch control circuit, an MCU, a USB output end, a voltage stabilizing module and a USB insertion detection circuit; the charging conversion circuit is connected with the diode isolation circuit, and the diode isolation circuit is connected with the MOS tube switch control circuit; the voltage stabilizing module is respectively connected with the MCU and the USB plug-in detection circuit; the MCU is connected with an MOS tube switch control circuit, and the MOS tube switch control circuit is connected with the USB output end; and the USB output end is connected with the USB insertion detection circuit. The utility model discloses a MOS pipe control circuit and diode buffer circuit break off 5V 2A charging circuit and USB output circuit, thereby insert detection circuitry through USB simultaneously and judge whether to close 5V 2A charging conversion circuit and realize the ultralow stand-by power consumption of entire system, effectively practice thrift the life-span of electric energy, extension group battery and the life-span of circuit to the security that entire system used has been improved.
Description
Technical Field
The utility model relates to a charging circuit, concretely relates to low standby power consumption USB charging circuit.
Background
Nowadays, mobile phones in the society are very popular, and many electronic devices such as portable lamps and lanterns all have a USB mobile phone charging function, and a common problem that they meet is how to reduce the standby power consumption of their USB charging, and guarantee that the product is placed for a long time and the battery is not damaged, which presents a great challenge to the design.
Disclosure of Invention
The utility model aims to solve the technical problem that the circuit passes through MOS pipe control circuit and diode buffer circuit to 5V 2A charging circuit and USB output circuit disconnection, thereby insert detection circuitry through USB simultaneously and judge whether to close 5V 2A charging conversion circuit and realize the ultralow stand-by power consumption of entire system, effectively practice thrift the life-span of electric energy, extension group battery and the life-span of circuit to the security that entire system used has been improved.
The utility model discloses low stand-by power consumption USB charging circuit realizes through following technical scheme: the device comprises a charging conversion circuit, a diode isolation circuit, an MOS tube switch control circuit, an MCU, a USB output end, a voltage stabilizing module and a USB plug-in detection circuit;
the charging conversion circuit is connected with the diode isolation circuit, and the diode isolation circuit is connected with the MOS tube switch control circuit; the voltage stabilizing module is respectively connected with the MCU and the USB plug-in detection circuit; the MCU is connected with the MOS tube switch control circuit, and the MOS tube switch control circuit is connected with the USB output end; the USB output end is connected with the USB insertion detection circuit.
Preferably, the rated input of the charge conversion circuit is 5V or 2A.
Preferably, the voltage of the voltage stabilizing module is 5V.
The utility model has the advantages that: the utility model discloses the circuit is through MOS pipe control circuit and diode buffer circuit 5V 2A charging circuit and USB output circuit disconnection, thereby insert detection circuitry through USB simultaneously and judge whether to close 5V 2A charging conversion circuit and realize the ultralow stand-by power consumption of entire system, effectively practice thrift the life-span of electric energy, extension group battery and the life-span of circuit to the security that entire system used has been improved.
Drawings
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, 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 can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the utility model discloses a low standby power consumption USB charging circuit, which comprises a charging conversion circuit, a diode isolation circuit, a MOS transistor switch control circuit, a MCU, a USB output terminal, a voltage stabilizing module and a USB insertion detection circuit;
the charging conversion circuit is connected with the diode isolation circuit, and the diode isolation circuit is connected with the MOS tube switch control circuit; the voltage stabilizing module is respectively connected with the MCU and the USB insertion detection circuit, the voltage stabilizing module passes through the voltage for the USB insertion detection circuit through the current limiting resistor, and the USB insertion detection circuit detects whether current passes through the voltage; the MCU is connected with the MOS tube switch control circuit, and the MOS tube switch control circuit is connected with the USB output end; the USB output end is connected with the USB insertion detection circuit; the rated input of the charging conversion circuit is 5V and 2A; the voltage of the voltage stabilizing module is 5V.
The working process is as follows:
when the USB output end is not connected with a battery or a load, the 5V voltage supplies voltage to the USB plug-in detection circuit through the current-limiting resistor, and at the moment, because the USB output end does not have a battery or a load loop, the USB plug-in detection circuit does not have current flowing through; the signal is transmitted to the MCU to judge that no battery or load is connected at the moment so as to close the MOS tube and the main power loop charged by 5V 2A, and the standby working current of the whole system is only the standby current from the voltage stabilizing module and the MCU after the shutdown, generally about 10uA, so that the purpose of ultralow standby power consumption is realized;
when the USB output end is connected with a battery or a load, the 5V voltage forms a loop with the battery or the load through the current limiting resistor, namely, the current flows through the USB plug-in detection circuit. After the MCU receives the current signal, the 5V 2A charging circuit and the master control MOS tube are opened, and the current of the charging circuit is output to the USB output end through the diode and the MOS tube to realize the charging function.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (3)
1. A low standby power consumption USB charging circuit which characterized in that: the device comprises a charging conversion circuit, a diode isolation circuit, an MOS tube switch control circuit, an MCU, a USB output end, a voltage stabilizing module and a USB plug-in detection circuit;
the charging conversion circuit is connected with the diode isolation circuit, and the diode isolation circuit is connected with the MOS tube switch control circuit; the voltage stabilizing module is respectively connected with the MCU and the USB plug-in detection circuit; the MCU is connected with an MOS tube switch control circuit, and the MOS tube switch control circuit is connected with the USB output end; and the USB output end is connected with the USB insertion detection circuit.
2. The low standby power consumption USB charging circuit of claim 1, wherein: and the rated input of the charging conversion circuit is 5V and 2A.
3. The low standby power consumption USB charging circuit of claim 1, wherein: the voltage of the voltage stabilizing module is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022409425.1U CN213305037U (en) | 2020-10-26 | 2020-10-26 | Low-standby-power-consumption USB charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022409425.1U CN213305037U (en) | 2020-10-26 | 2020-10-26 | Low-standby-power-consumption USB charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213305037U true CN213305037U (en) | 2021-05-28 |
Family
ID=76014347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022409425.1U Expired - Fee Related CN213305037U (en) | 2020-10-26 | 2020-10-26 | Low-standby-power-consumption USB charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213305037U (en) |
-
2020
- 2020-10-26 CN CN202022409425.1U patent/CN213305037U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 |