CN208226611U - A kind of twoport USB charger containing fast charge - Google Patents
A kind of twoport USB charger containing fast charge Download PDFInfo
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- CN208226611U CN208226611U CN201820532236.3U CN201820532236U CN208226611U CN 208226611 U CN208226611 U CN 208226611U CN 201820532236 U CN201820532236 U CN 201820532236U CN 208226611 U CN208226611 U CN 208226611U
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Abstract
The twoport USB charger containing fast charge that the utility model relates to a kind of, including transforming circuit, rectification circuit, control circuit, switching circuit, the first USB charging interface and the second USB charging interface；The input terminal of the output end connection rectification circuit of transforming circuit, the output end of rectification circuit be electrically connected the input terminal of connection control circuit and the input terminal of switching circuit and first charging USB charging interface power input and the second USB charging interface power input, the control terminal of control circuit connects the control terminal of the first charging interface, and the control terminal of switching circuit connects the control terminal of the second USB charging interface；Using this circuit as charger charging circuit, the conversion that can be completed without increasing DC-DC circuit to voltage between fast fill device and common charging equipment reduces costs without more circuits, circuit integration can reduce the volume of charger on a circuit board simultaneously.
Description
Technical field
The utility model relates to charger technologies fields, charge more specifically to a kind of twoport USB containing fast charge
Device.
Background technique
With the development of fast charge technology and the extensive use of mobile phone peripheral equipment, twoport or more mouthfuls of USB in the market fills
Electric appliance is more and more, has the demand of fast charge function increasing one of delivery outlet on more mouthfuls of chargers.Existing market
On twoport or more mouthfuls of the charger with fast charge function, majority be two independent circuits or it is secondary increase DC-DC converter,
For meeting fast charge and the common required different voltages that charge, this causes the volume of charger to become larger, while increasing DC-DC electricity
Road will increase the quantity of component, lead to increased costs.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide a kind of containing fast charge
Twoport USB charger.
The utility model first aspect provides a kind of twoport USB charger containing fast charge, including transforming circuit, rectified current
Road, control circuit, switching circuit, the first USB charging interface and the second USB charging interface；The output end of the transforming circuit connects
The input terminal of the rectification circuit is connect, the output end of the rectification circuit is electrically connected the input terminal and switch of the control circuit
The power input and second USB charging interface of the input terminal of circuit and the first charging USB charging interface
Power input, the control terminal of the control circuit connect the control terminal of first charging interface, the control of the switching circuit
End processed connects the control terminal of second USB charging interface.
Preferably, the switching circuit include first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance,
Zener diode, triode and the first metal-oxide-semiconductor；The anode of the zener diode connects as the input terminal of the switching circuit
Connect one end and described of the output end of the rectification circuit and one end of the second resistance and the 3rd resistor
The cathode of the first pin as power input of two USB charging interfaces, the zener diode connects the first resistor
One end, the other end of the first resistor connects one end of the 4th resistance and the base stage of the triode, described three
The collector of pole pipe connects the other end of the second resistance and one end of the 5th resistance and first metal-oxide-semiconductor
Grid, the emitter of the triode connect the other end of the 4th resistance and the other end and the institute of the 5th resistance
The source electrode and ground wire of the first metal-oxide-semiconductor are stated, described in the drain electrode of first metal-oxide-semiconductor is connected as the control terminal of the switching circuit
The 4th pin of the other end of 3rd resistor and second USB charging interface as control terminal.
Preferably, the control circuit includes the control chip with fast charge agreement, the 6th resistance, the 7th resistance, the 8th electricity
Resistance, the 9th resistance, optocoupler diode and first capacitor；Input of 5th pin of the control chip as the control circuit
End connects the output end of the rectification circuit by the diode and the 6th resistance, and the 6th of the control chip draws
Foot connects one end of the 7th resistance and one end of the 8th resistance, and the 7th pin and the 8th of the control chip draws
Foot is separately connected second pin and third of first charging interface as control terminal as the control terminal of the control circuit
Pin, the 4th pin of first charging interface connect one end of the 9th resistance, and the other end of the 9th resistance connects
Connect the other end of the 8th resistance and one end and the ground wire of the first capacitor, the other end connection of the first capacitor
The other end of 7th resistance and the power input of first charging interface.
Preferably, the rectification circuit includes inductance rectification chip, the tenth resistance, eleventh resistor, the second capacitor and
Two metal-oxide-semiconductors；6th pin of the rectification chip connects described tenth resistance one end as output end, the tenth resistance it is another
One end connects one end of second capacitor and the output end as the rectification circuit；The third pin of the rectification chip connects
Connecing one end of the eleventh resistor, the other end of the eleventh resistor connects the grid of second metal-oxide-semiconductor, and described second
The source electrode of metal-oxide-semiconductor connects the other end and ground wire of second capacitor.
The utility model beneficial effect is: using this circuit as charger charging circuit, without increasing DC-DC circuit
The conversion to voltage between fast fill device and common charging equipment can be completed, without more circuits, that is, reduce costs, together
When circuit integration on circuit board, the volume of charger can be reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the utility model is described in further detail, and the accompanying drawings in the following description is only section Example of the invention, for this
For the those of ordinary skill of field, without creative efforts, it is attached to can also be obtained according to these attached drawings other
Figure:
Fig. 1 is the circuit diagram of the twoport USB charger containing fast charge of the utility model preferred embodiment.
Specific embodiment
It is practical below in conjunction with this in order to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Technical solution in new embodiment carries out clear, complete description, it is clear that described embodiment is the portion of the utility model
Point embodiment, rather than whole embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art are not paying creation
Property labour under the premise of every other embodiment obtained, belong to the protection scope of the utility model.
A kind of twoport USB charger containing fast charge of the utility model preferred embodiment is as shown in Figure 1, include transforming circuit
1, rectification circuit 2, control circuit 3, switching circuit 4, the first USB charging interface U1 and the second USB charging interface U2；Transforming circuit
1 output end connection rectification circuit 2 input terminal, the output end of rectification circuit 2 be electrically connected connection control circuit 3 input terminal and open
The electricity of the power input and the second USB charging interface U2 of the input terminal on powered-down road 4 and the first charging USB charging interface U1
Source input terminal, the control terminal of control circuit 3 connect the control terminal of the first charging interface U1, the control terminal connection of switching circuit 4 the
The control terminal of two USB charging interface U2；This circuit connects the first USB charging interface of control by control circuit, when the first USB fills
When electrical interface access is conventional equipment, it is 5V that rectification circuit, which is exported to the voltage of two USB charging interfaces, when the first charging
When mouth accesses fast fill device, the output voltage of one end that the output voltage of control circuit is connected with the rectifying circuit slowly rises, when
When voltage rises to 5.5V, switching circuit control terminal disconnects the connection with the second USB charging interface, so that the 2nd USB charging
Mouth is in an off state；Using this circuit as charger charging circuit, it can be completed without increasing DC-DC circuit and fast charge set
Between standby and common charging equipment the conversion of voltage reduces costs without more circuits, while circuit integration and one
On circuit board, the volume of charger can be reduced.
The twoport USB charger containing fast charge of the utility model preferred embodiment is as shown in Figure 1, switching circuit 4 includes the
One resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, zener diode D1, triode Q and
First metal-oxide-semiconductor T1；The anode of zener diode D1 as switching circuit 4 input terminal connection rectification circuit 2 output end and
As power input of one end of second resistance R2 and one end of 3rd resistor R3 and the second USB charging interface U2
One pin, one end of the cathode connection first resistor R1 of zener diode D1, the other end of first resistor R1 connect the 4th resistance
One end of R4 and the base stage of triode Q, the other end and the 5th resistance R5 of the collector connection second resistance R2 of triode Q
One end and the first metal-oxide-semiconductor T1 grid, the emitter of triode Q connects the other end and the 5th resistance of the 4th resistance R4
The source electrode and ground wire of the other end of R5 and the first metal-oxide-semiconductor T1, control of the drain electrode of the first metal-oxide-semiconductor T1 as switching circuit 4
Fourth pin of the other end and the second USB charging interface U2 of end connection 3rd resistor R3 as control terminal；When the first USB fills
When electrical interface accesses fast fill device, on the output voltage of one end that the output voltage of control circuit is connected with the rectifying circuit is slow
It rises, when voltage rises to 5.5V, due to the characteristic of zener diode D1, the electric current of branch can increase rapidly on zener diode
Greatly, triode Q is connected, and the first metal-oxide-semiconductor turns off rapidly, thus the charging connection of the second USB charging interface of shutdown.
The twoport USB charger containing fast charge of the utility model preferred embodiment is as shown in Figure 1, control circuit 3 includes band
Control chip U3, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, optocoupler diode of fast charge agreement
PCA and first capacitor C1；Control chip U3 the 5th pin as control circuit 3 input terminal pass through optocoupler diode PCA with
And the 6th resistance R6 connection rectification circuit 2 output end, control chip U3 the 6th pin connect the 7th resistance R7 one end with
And the 8th resistance R8 one end, control chip U3 the 7th pin and the 8th pin connect respectively as the control terminal of control circuit 3
Connect second pin and third pin of the first charging interface U1 as control terminal, the 4th pin connection of the first charging interface U1 the
One end of nine resistance R9, the other end of the 9th resistance R9 connect the 8th resistance R8 the other end and first capacitor C1 one end with
And ground wire, the other end of first capacitor C1 connect the other end of the 7th resistance R7 and the power input of the first charging interface U1
End；Wherein, the model OB2603 of chip U3 is controlled；It controls chip U3 and passes through the equipment of judgement the first USB charging interface of access
Type, control VFB output pin voltage to cooperate switching circuit realize shutdown the second USB charging interface purpose.
The twoport USB charger containing fast charge of the utility model preferred embodiment is as shown in Figure 1, rectification circuit 2 includes electricity
Feel rectification chip U4, the tenth resistance R10, eleventh resistor R11, the second capacitor C2 and the second metal-oxide-semiconductor T2；The of rectification chip U4
Six pins connect the tenth one end resistance R10 as output end, and the other end of the tenth resistance R10 connects one end of the second capacitor C2 simultaneously
Output end as rectification circuit 2；One end of the third pin connection eleventh resistor R11 of rectification chip U4, eleventh resistor
The other end of R11 connects the grid of the second metal-oxide-semiconductor T2, the source electrode of the second metal-oxide-semiconductor T2 connect the second capacitor C2 the other end and
Ground wire；Wherein, the model LN5S03 of rectification chip U4；Rectification circuit will provide stable electric current after the electric current integration after transformation
Output.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations belong to the protection scope of the appended claims for the utility model.
Claims (4)
1. a kind of twoport USB charger containing fast charge, which is characterized in that including transforming circuit, rectification circuit, control circuit, open
Powered-down road, the first USB charging interface and the second USB charging interface；The output end of the transforming circuit connects the rectification circuit
Input terminal, the output end of the rectification circuit be electrically connected the control circuit input terminal and switching circuit input terminal with
And first USB charging interface power input and second USB charging interface power input, the control
The control terminal of circuit connects the control terminal of first charging interface, and the control terminal of the switching circuit connects the 2nd USB
The control terminal of charging interface.
2. the twoport USB charger according to claim 1 containing fast charge, which is characterized in that the switching circuit includes the
One resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, zener diode, triode and the first metal-oxide-semiconductor；Institute
The anode for stating zener diode connects the output end and described of the rectification circuit as the input terminal of the switching circuit
As power input of one end and second USB charging interface of one end of two resistance and the 3rd resistor
One pin, the cathode of the zener diode connect one end of the first resistor, and the other end of the first resistor connects institute
One end of the 4th resistance and the base stage of the triode are stated, the collector of the triode connects the another of the second resistance
The grid of one end and first metal-oxide-semiconductor of end and the 5th resistance, the emitter connection described the of the triode
The source electrode and ground wire of the other end and first metal-oxide-semiconductor of the other end of four resistance and the 5th resistance, described
The drain electrode of one metal-oxide-semiconductor connects the other end and the 2nd USB of the 3rd resistor as the control terminal of the switching circuit
Fourth pin of the charging interface as control terminal.
3. the twoport USB charger according to claim 1 containing fast charge, which is characterized in that the control circuit includes band
Control chip, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, optocoupler diode and the first capacitor of fast charge agreement；
5th pin of the control chip passes through the optocoupler diode and the described 6th as the input terminal of the control circuit
Resistance connects the output end of the rectification circuit, the 6th pin of the control chip connect the 7th resistance one end and
One end of 8th resistance, control terminal point of the 7th pin and the 8th pin of the control chip as the control circuit
Second pin and third pin of first charging interface as control terminal are not connected, and the 4th of first charging interface draws
Foot connects one end of the 9th resistance, and the other end of the 9th resistance connects the other end of the 8th resistance and described
One end of first capacitor and ground wire, the other end of the first capacitor connect the other end and described of the 7th resistance
The power input of one charging interface.
4. the twoport USB charger according to claim 1 containing fast charge, which is characterized in that the rectification circuit includes electricity
Feel rectification chip, the tenth resistance, eleventh resistor, the second capacitor and the second metal-oxide-semiconductor；6th pin conduct of the rectification chip
Output end connects described tenth resistance one end, and the other end of the tenth resistance connects one end of second capacitor and as institute
State the output end of rectification circuit；The third pin of the rectification chip connects one end of the eleventh resistor, and the described 11st
The other end of resistance connects the grid of second metal-oxide-semiconductor, and the source electrode of second metal-oxide-semiconductor connects the another of second capacitor
End and ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532236.3U CN208226611U (en) | 2018-04-16 | 2018-04-16 | A kind of twoport USB charger containing fast charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532236.3U CN208226611U (en) | 2018-04-16 | 2018-04-16 | A kind of twoport USB charger containing fast charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208226611U true CN208226611U (en) | 2018-12-11 |
Family
ID=64529139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820532236.3U Expired - Fee Related CN208226611U (en) | 2018-04-16 | 2018-04-16 | A kind of twoport USB charger containing fast charge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208226611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567033A (en) * | 2022-02-21 | 2022-05-31 | 湖南炬神电子有限公司 | Circuit for improving conversion efficiency of multi-port charger |
-
2018
- 2018-04-16 CN CN201820532236.3U patent/CN208226611U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567033A (en) * | 2022-02-21 | 2022-05-31 | 湖南炬神电子有限公司 | Circuit for improving conversion efficiency of multi-port charger |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 Termination date: 20200416 |