CN112332494A - PD charger conversion circuit - Google Patents
PD charger conversion circuit Download PDFInfo
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- CN112332494A CN112332494A CN202011311728.8A CN202011311728A CN112332494A CN 112332494 A CN112332494 A CN 112332494A CN 202011311728 A CN202011311728 A CN 202011311728A CN 112332494 A CN112332494 A CN 112332494A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000005070 sampling Methods 0.000 claims description 14
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a charging connector, in particular to a PD charger conversion circuit, which comprises an interface circuit, an input detection circuit, a first charging management circuit and a second charging management circuit, wherein the first charging management circuit is connected with the input detection circuit; the interface circuit is connected with the input detection circuit, and the input detection circuit is in handshake communication with the charging seat through the interface circuit, so that the charging seat after the handshake communication is successful provides high level for the interface circuit; the input end of the first charging management circuit is connected with the interface circuit, and the first charging management circuit is used for receiving a high level and converting the high level into a first conversion voltage; the input end of the second charging management circuit is connected with the interface circuit, and the second charging management circuit is used for receiving the high level and converting the high level into a second conversion voltage. The mobile device charging management circuit comprises a charging management circuit, a charging management circuit and a charging management circuit, wherein the charging management circuit is used for charging a plurality of mobile devices, and the charging management circuit is used for outputting different charging powers.
Description
Technical Field
The invention relates to a charging connector, in particular to a PD charger conversion circuit.
Background
Mobile devices such as mobile phones, palm computers or wireless earphones need to be charged when the mobile devices are not powered, and a traditional mobile device charger is characterized in that one connector corresponds to one charging wire, so that a plurality of mobile devices cannot be charged simultaneously, mobile devices of different types cannot be charged, the self-adaption is poor, and the charger resource cannot be effectively and fully utilized.
Disclosure of Invention
The invention aims to provide a PD charger conversion circuit to overcome the defect that the existing charger cannot charge a plurality of mobile devices at the same time.
In order to achieve the above object, the present invention discloses a PD charger converting circuit for connecting a charging socket and an electric device, wherein:
the PD charger conversion circuit comprises an interface circuit, an input detection circuit, a first charging management circuit and a second charging management circuit;
the interface circuit is connected with the input detection circuit, and the input detection circuit is in handshake communication with the charging seat through the interface circuit, so that the charging seat after the handshake communication is successful provides high level for the interface circuit;
the input end of the first charging management circuit is connected with the interface circuit, and the first charging management circuit is used for receiving a high level through the interface circuit and converting the high level into a first conversion voltage through voltage reduction;
the input end of the second charging management circuit is connected with the interface circuit, and the second charging management circuit is used for receiving the high level through the interface circuit and converting the high level into a second conversion voltage through voltage reduction.
Furthermore, the interface circuit comprises a power-taking interface, a voltage stabilizing chip and a filter element, the power-taking interface and the voltage stabilizing chip are respectively connected with the input detection circuit, the power-taking interface and the voltage stabilizing chip are respectively used for being connected with the charging seat, one end of the filter element is connected with the input end of the voltage stabilizing chip, and the other end of the filter element is connected with the grounding end of the voltage stabilizing chip.
Furthermore, the input detection circuit comprises a detection chip used for handshaking communication with the charging seat, a power supply end of the detection chip is connected with an output end of the voltage stabilization chip, and the power taking interface is in communication connection with the detection chip.
Furthermore, the input detection circuit also comprises an input filter circuit and an input voltage division circuit, the input filter circuit is simultaneously connected with the detection chip and the voltage stabilization chip, the input end of the input voltage division circuit is connected with the power taking interface, and the output end of the input voltage division circuit is connected with the control input end of the detection chip.
Furthermore, get the electric interface and be USB Type-C interface.
Furthermore, the first charging management circuit comprises a first voltage reduction chip, a first inductor and a first charging interface, the input end of the first voltage reduction chip is connected with the interface circuit, and the output end of the first voltage reduction chip, the first inductor and the input end of the first charging interface are sequentially connected in series.
Furthermore, the first charging management circuit further comprises a first voltage division circuit and a voltage sampling circuit, wherein the input end of the first voltage division circuit is connected with the interface circuit, the output end of the first voltage division circuit is connected with the starting end of the first voltage reduction chip, and the voltage sampling circuit is respectively connected with the sampling end of the first voltage reduction chip and the output end of the first inductor.
Furthermore, the second charging management circuit comprises a second voltage reduction chip, a second inductor and a second charging interface, the input end of the second voltage reduction chip is connected with the interface circuit, the output end of the second voltage reduction chip, the second inductor and the input end of the second charging interface are sequentially connected in series, and the second voltage reduction chip and the second charging interface are in data intercommunication.
Furthermore, the second charging management circuit further comprises a second filter circuit and a third filter circuit, one end of the second filter circuit is connected with the input end and the data end of the second buck chip, the other end of the second filter circuit is grounded, and the second inductor is connected with the input end of the second charging interface through the third filter circuit.
The invention has the beneficial effects that: through setting up a plurality of charging management circuits, can charge to a plurality of different mobile devices simultaneously, each charging management circuit can be set for the charging power of output difference, and the mobile device of adaptable different grade type has good practicality and suitability.
Drawings
Fig. 1 is a schematic structural diagram of a PD charger conversion circuit according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a connection structure of the power-taking interface and the input detection circuit.
Fig. 3 is a schematic structural diagram of a first charge management circuit.
Fig. 4 is a schematic structural diagram of a second charge management circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described with reference to the embodiments and the accompanying drawings.
Referring to fig. 1, an embodiment of a PD charger conversion circuit according to the present invention includes an interface circuit 1, an input detection circuit 2, a first charging management circuit 3, and a second charging management circuit 4.
Specifically, the interface circuit 1 is connected with the input detection circuit 2, and the input detection circuit 2 communicates with the charge holder through the interface circuit 1, so that the charge holder after successful handshake communication provides a high level to the interface circuit 1; the input end of the first charging management circuit 3 is connected with the interface circuit 1, and the first charging management circuit 3 is used for receiving a high level through the interface circuit 1 and converting the high level into a first conversion voltage by voltage reduction; the input end of the second charging management circuit 4 is connected to the interface circuit 1, and the second charging management circuit 4 is configured to receive a high level through the interface circuit 1 and step down the high level to a second conversion voltage.
The charger conversion circuit is connected between the charging seat and the electric equipment, and when the input detection circuit 2 is communicated with a chip in the charging seat, handshaking communication is carried out to prepare for level conversion; the first charging management circuit 3 and the second charging management circuit 4 are substantially step-down conversion circuits, and can convert the high level from the charging stand into power output suitable for the corresponding electric device, for example, the first charging management circuit 3 can output an electric signal with a constant voltage of 5V and a maximum output current of 2A, the second charging management circuit 4 can output an electric signal with a constant voltage of 5V and a maximum output current of 3A, and can simultaneously charge different types of mobile devices, thereby solving the problem that the existing charger cannot simultaneously charge a plurality of mobile devices.
Referring to fig. 2, the power-taking interface 11 is electrically connected to the input detection circuit 2, and the input detection circuit 2 communicates with the charging base through the power-taking interface 11.
The interface circuit 1 includes getting electric interface 11, steady voltage chip 12 and filter element 13, gets electric interface 11 and steady voltage chip 12 and is connected with input detection circuit 2 respectively, gets electric interface 11 and steady voltage chip 12 and is used for being connected with the charging seat respectively, and the one end of filter element 13 is connected with the input of steady voltage chip 12, and the other end of filter element 13 is connected with the earthing terminal of steady voltage chip 12. Get electric interface 11 and be USB Type-C interface.
The input detection circuit 2 comprises a detection chip 21 used for handshake communication with the charging seat, a power supply end of the detection chip 21 is connected with an output end of the voltage stabilization chip 12, and the power taking interface 11 is in communication connection with the detection chip 21. The input detection circuit 2 further comprises an input filter circuit 22 and an input voltage division circuit 23, the input filter circuit 22 is connected with the detection chip 21 and the voltage stabilization chip 12, the input end of the input voltage division circuit 23 is connected with the power taking interface 11, and the output end of the input voltage division circuit 23 is connected with the control input end of the detection chip 21.
Specifically, the input filter circuit 22 includes a filter resistor and a filter capacitor, the filter resistor is connected in series between the output terminal of the voltage stabilizing chip 12 and the power supply terminal of the first voltage dropping chip 31, and the filter capacitor is connected beside the filter resistor; the input voltage-dividing circuit 23 is formed by connecting two voltage-dividing resistors in parallel with each other in series with a voltage-dividing resistor, one end of the input voltage-dividing circuit 23 is connected with the power-taking interface 11, the other end is grounded, and the common end of the voltage-dividing resistor is connected with the control input end of the detection chip 21.
Referring to fig. 3, the first charging management circuit 3 includes a first buck chip 31, a first inductor 32 and a first charging interface 33, an input end of the first buck chip 31 is connected to the interface circuit 1, and an output end of the first buck chip 31, the first inductor 32 and an input end of the first charging interface 33 are sequentially connected in series.
In this embodiment, the first charging management circuit 3 further includes a first voltage dividing circuit 34 and a voltage sampling circuit 35, an input end of the first voltage dividing circuit 34 is connected to the interface circuit 1, an output end of the first voltage dividing circuit 34 is connected to the start end of the first buck chip 31, and the voltage sampling circuit 35 is respectively connected to the sampling end of the first buck chip 31 and the output end of the first inductor 32.
Specifically, the first voltage dividing circuit 34 includes two sampling resistors connected in series, one end of each sampling resistor is connected to the first inductor 32, the other end of each sampling resistor is grounded, and a common end of each sampling resistor is connected to a voltage sampling end of the first voltage dropping chip 31; the first voltage dividing circuit 34 includes two voltage dividing resistors connected in series, one end of each voltage dividing resistor is connected to the bus connected to the charging socket, the other end of each voltage dividing resistor is grounded, and the common end of each voltage dividing resistor is connected to the start end of the first buck chip 31.
Referring to fig. 4, the second charging management circuit 4 includes a second buck chip 41, a second inductor 42 and a second charging interface 43, an input end of the second buck chip 41 is connected to the interface circuit 1, an output end of the second buck chip 41, the second inductor 42 and an input end of the second charging interface 43 are sequentially connected in series, and the second buck chip 41 and the second charging interface 43 are in data communication.
In this embodiment, the second charging management circuit 4 further includes a second filter circuit 44 and a third filter circuit 45, one end of the second filter circuit 44 is connected to the input end and the data end of the second buck chip 41, the other end is grounded, and the second inductor 42 is connected to the input end of the second charging interface 43 through the third filter circuit 45.
Specifically, the second filter circuit 44 includes a plurality of filter capacitors, one end of each of which is connected to the input end of the second voltage-to-current chip and the plurality of data ends one by one, and the other end of each of which is grounded; the third filter circuit 45 includes a filter resistor connected in series between the second inductor 42 and the second charging interface 43, and a filter capacitor connected in parallel with the filter resistor.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A PD charger conversion circuit is used for connecting a charging seat and electric equipment and is characterized by comprising an interface circuit (1), an input detection circuit (2), a first charging management circuit (3) and a second charging management circuit (4);
the interface circuit (1) is connected with the input detection circuit (2), and the input detection circuit (2) communicates with a charge holder through the interface circuit (1), so that the charge holder after successful communication provides high level for the interface circuit (1);
the input end of the first charging management circuit (3) is connected with the interface circuit (1), and the first charging management circuit (3) is used for receiving the high level through the interface circuit (1) and converting the high level into a first conversion voltage through voltage reduction;
the input end of the second charging management circuit (4) is connected with the interface circuit (1), and the second charging management circuit (4) is used for receiving the high level through the interface circuit (1) and converting the high level into a second conversion voltage through voltage reduction.
2. The PD charger converting circuit according to claim 1, characterized in that the interface circuit (1) comprises a power-taking interface (11), a voltage-stabilizing chip (12) and a filter element (13), the power-taking interface (11) and the voltage-stabilizing chip (12) are respectively connected with the input detection circuit (2), the power-taking interface (11) and the voltage-stabilizing chip (12) are respectively used for being connected with a charging seat, one end of the filter element (13) is connected with an input end of the voltage-stabilizing chip (12), and the other end of the filter element (13) is connected with a grounding end of the voltage-stabilizing chip (12).
3. The PD charger conversion circuit according to claim 2, wherein said input detection circuit (2) comprises a detection chip (21) for handshaking communication with a charging cradle, a power supply terminal of said detection chip (21) is connected to an output terminal of the voltage regulation chip (12), and said power supply interface (11) is connected to said detection chip (21) in communication.
4. The PD charger converting circuit according to claim 3, characterized in that the input detection circuit (2) further comprises an input filter circuit (22) and an input voltage divider circuit (23), the input filter circuit (22) is connected with the detection chip (21) and the voltage stabilization chip (12) at the same time, the input end of the input voltage divider circuit (23) is connected with the power taking interface (11), and the output end of the input voltage divider circuit (23) is connected with the control input end of the detection chip (21).
5. The PD charger conversion circuit according to any of claims 2 to 4, characterized in that the power-taking interface (11) is a USB Type-C interface.
6. The PD charger conversion circuit according to claim 1, wherein the first charging management circuit (3) comprises a first buck chip (31), a first inductor (32) and a first charging interface (33), wherein an input of the first buck chip (31) is connected to the interface circuit (1), and an output of the first buck chip (31), the first inductor (32) and an input of the first charging interface (33) are serially connected in sequence.
7. The PD charger converting circuit according to claim 1, wherein the first charging management circuit (3) further comprises a first voltage divider circuit (34) and a voltage sampling circuit (35), an input terminal of the first voltage divider circuit (34) is connected to the interface circuit (1), an output terminal of the first voltage divider circuit (34) is connected to the start terminal of the first buck chip (31), and the voltage sampling circuit (35) is connected to the sampling terminal of the first buck chip (31) and the output terminal of the first inductor (32), respectively.
8. The PD charger conversion circuit according to claim 1, wherein the second charging management circuit (4) includes a second buck chip (41), a second inductor (42), and a second charging interface (43), an input of the second buck chip (41) is connected to the interface circuit (1), an output of the second buck chip (41), the second inductor (42), and an input of the second charging interface (43) are sequentially connected in series, and the second buck chip (41) is in data communication with the second charging interface (43).
9. The PD charger conversion circuit according to claim 8, wherein said second charge management circuit (4) further comprises a second filter circuit (44) and a third filter circuit (45), one end of said second filter circuit (44) is connected to the input and data terminal of the second buck chip (41), the other end is grounded, and said second inductor (42) is connected to the input of the second charging interface (43) through the third filter circuit (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311728.8A CN112332494A (en) | 2020-11-20 | 2020-11-20 | PD charger conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311728.8A CN112332494A (en) | 2020-11-20 | 2020-11-20 | PD charger conversion circuit |
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| Publication Number | Publication Date |
|---|---|
| CN112332494A true CN112332494A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011311728.8A Withdrawn CN112332494A (en) | 2020-11-20 | 2020-11-20 | PD charger conversion circuit |
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| Country | Link |
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| CN (1) | CN112332494A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204367A (en) * | 2021-11-18 | 2022-03-18 | 深圳新联胜光电科技有限公司 | USB Type-C full-function switching device adopting SFP module communication |
-
2020
- 2020-11-20 CN CN202011311728.8A patent/CN112332494A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204367A (en) * | 2021-11-18 | 2022-03-18 | 深圳新联胜光电科技有限公司 | USB Type-C full-function switching device adopting SFP module communication |
| CN114204367B (en) * | 2021-11-18 | 2023-12-05 | 深圳新联胜光电科技有限公司 | USB Type-C full-function switching device adopting SFP module for communication |
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Application publication date: 20210205 |