CN205453206U - USB (universal serial bus) charging circuit - Google Patents
USB (universal serial bus) charging circuit Download PDFInfo
- Publication number
- CN205453206U CN205453206U CN201620118900.0U CN201620118900U CN205453206U CN 205453206 U CN205453206 U CN 205453206U CN 201620118900 U CN201620118900 U CN 201620118900U CN 205453206 U CN205453206 U CN 205453206U
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- China
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- electric capacity
- feet
- resistance
- ground connection
- power supply
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a USB (universal serial bus) charging circuit is connected with power E1's anodal electricity behind main chip IC1's the 2 foot series connection R3, power E1's minus earth, main chip IC1's 3 feet and electric capacity C1's one end are connected, and main chip IC1's 4 feet and electric capacity C1's the other end are connected the back and are connected with electric capacity C2's one end, electric capacity C2's other end ground connection, and main chip IC1's 8 feet and 7 foot ground connection, main chip IC1's 6 feet and the connection of 5 feet is back is connected with freewheeling diode D1's one end, freewheeling diode D1's other end ground connection, main chip IC1's 6 feet and 5 feet still are connected with inductance la's one end after connecting, and inductance la's the other end and electric capacity C3's one end are connected, electric capacity C3's other end ground connection, and power E2's positive electrode groud, power E2's negative pole and resistance R2's one end are connected, and resistance R2's the other end connects in parallel with main chip IC1's 1 foot and then is connected with resistance R1's one end, resistance R1's other end ground connection. Its advantage is: work efficiency is high, the circuit is simple and with low costs.
Description
Technical field
This utility model relates to a kind of circuit, is especially a kind of USB charging circuit.
Background technology
At present a lot of compact electric apparatus such as MP3 player, camera, phones all can be charged by the charger of self band, it is also possible to be inserted into computer etc. by data wire and have on the equipment of USB interface and be charged.The DC-DC 5VUSB charging technique of prior art often also exists that efficiency is low, complex circuit and the high problem of cost.
Utility model content
In view of the defect of above-mentioned prior art, the purpose of this utility model is: provide a kind of USB charging circuit, and work efficiency is high, circuit is simple and low cost.
Technical solution of the present utility model is: USB charging circuit, including master chip IC1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, sustained diode 1, inductance La, power supply E1 and power supply E2；It is connected with the positive electrical of power supply E1 after the 2 foot series connection R3 of described master chip IC1, the minus earth of described power supply E1,3 feet of described master chip IC1 are connected with one end of electric capacity C1,4 feet of described master chip IC1 are connected with one end of electric capacity C2 after being connected with the other end of electric capacity C1, the other end ground connection of electric capacity C2；8 feet of described master chip IC1 and 7 foot ground connection；6 feet of described master chip IC1 and 5 feet are connected with one end of sustained diode 1 after connecting, the other end ground connection of sustained diode 1, after 6 feet of described master chip IC1 and 5 feet connect, also one end with inductance La is connected, the other end of inductance La is connected with one end of electric capacity C3, the other end ground connection of electric capacity C3；The plus earth of described power supply E2, the negative pole of power supply E2 is connected with one end of resistance R2, and the other end of resistance R2 is connected with one end of resistance R1 with after the 1 foot parallel connection of master chip IC1, the other end ground connection of resistance R1.
Further, the rated voltage of described power supply E1 and power supply E2 is respectively 35V and 16V.
Applying USB charging circuit provided by the utility model, it provides the benefit that: when sustained diode 1 works, and when input voltage is 6V-48V, output voltage can be maintained at 5V all the time, and work efficiency is high, circuit is simple and low cost.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Detailed description of the invention
For relatively more directly perceived, be fully understood by the technical solution of the utility model, existing just combine this utility model accompanying drawing to carry out nonrestrictive feature description as follows:
As it is shown in figure 1, USB charging circuit, including master chip IC1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, sustained diode 1, inductance La, power supply E1 and power supply E2；It is connected with the positive electrical of power supply E1 after the 2 foot series connection R3 of master chip IC1, the minus earth of power supply E1, the other end of 4 feet and electric capacity C1 that 3 feet of described master chip IC1 are connected master chip IC1 with one end of electric capacity C1 is connected with one end of electric capacity C2 after being connected, the other end ground connection of electric capacity C2；8 feet of master chip IC1 and 7 foot ground connection；6 feet of master chip IC1 and 5 feet are connected with one end of sustained diode 1 after connecting, the other end ground connection of sustained diode 1, after 6 feet of master chip IC1 and 5 feet connect, also one end with inductance La is connected, and the other end of inductance La is connected with one end of electric capacity C3, the other end ground connection of electric capacity C3；The plus earth of power supply E2, the negative pole of power supply E2 is connected with one end of resistance R2, and the other end of resistance R2 is connected with one end of resistance R1 with after the 1 foot parallel connection of master chip IC1, the other end ground connection of resistance R1.
The rated voltage of power supply E1 and power supply E2 is respectively 35V and 16V.
USB charging circuit provided by the utility model, when sustained diode 1 works, when input voltage is 6V-48V, output voltage can be maintained at 5V all the time, and work efficiency is high, circuit is simple and low cost.
Certainly; these are only preferred embodiment of the present utility model; non-the scope of the claims of the present utility model, all utilization this utility model description and graphic content institute simple modification and the equivalent structure for it of the most i.e. limiting to changes, within all should being in like manner contained in scope of patent protection of the present utility model.
Claims (2)
1.USB charging circuit, it is characterised in that: include master chip IC1, resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, electric capacity C3, sustained diode 1, inductance La, power supply E1 and power supply E2；
It is connected with the positive electrical of power supply E1 after the 2 foot series connection R3 of described master chip IC1, the minus earth of described power supply E1,3 feet of described master chip IC1 are connected with one end of electric capacity C1,4 feet of described master chip IC1 are connected with one end of electric capacity C2 after being connected with the other end of electric capacity C1, the other end ground connection of electric capacity C2；
8 feet of described master chip IC1 and 7 foot ground connection；
6 feet of described master chip IC1 and 5 feet are connected with one end of sustained diode 1 after connecting, the other end ground connection of sustained diode 1, after 6 feet of described master chip IC1 and 5 feet connect, also one end with inductance La is connected, the other end of inductance La is connected with one end of electric capacity C3, the other end ground connection of electric capacity C3；
The plus earth of described power supply E2, the negative pole of power supply E2 is connected with one end of resistance R2, and the other end of resistance R2 is connected with one end of resistance R1 with after the 1 foot parallel connection of master chip IC1, the other end ground connection of resistance R1.
USB charging circuit the most according to claim 1, it is characterised in that: the rated voltage of described power supply E1 and power supply E2 is respectively 35V and 16V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118900.0U CN205453206U (en) | 2016-01-29 | 2016-01-29 | USB (universal serial bus) charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118900.0U CN205453206U (en) | 2016-01-29 | 2016-01-29 | USB (universal serial bus) charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205453206U true CN205453206U (en) | 2016-08-10 |
Family
ID=56581601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620118900.0U Expired - Fee Related CN205453206U (en) | 2016-01-29 | 2016-01-29 | USB (universal serial bus) charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205453206U (en) |
-
2016
- 2016-01-29 CN CN201620118900.0U patent/CN205453206U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20170129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |