CN113014083A - Adapter and port voltage adjusting method thereof - Google Patents
Adapter and port voltage adjusting method thereof Download PDFInfo
- Publication number
- CN113014083A CN113014083A CN202110372425.5A CN202110372425A CN113014083A CN 113014083 A CN113014083 A CN 113014083A CN 202110372425 A CN202110372425 A CN 202110372425A CN 113014083 A CN113014083 A CN 113014083A
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- Prior art keywords
- voltage
- conversion circuit
- conversion
- load
- output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses an adapter and a port voltage adjusting method thereof, which comprises an AC/DC conversion circuit and a DC/DC conversion circuit, wherein the output end of the AC/DC conversion circuit is connected with the input end of the DC/DC conversion circuit in parallel, the output end of the DC/DC conversion circuit is connected with a load, when the load voltage is greater than a set value, the DC/DC conversion circuit is in direct connection, the output voltage of the AC/DC conversion circuit is adjustable and equal to the load voltage, when the load voltage is not greater than the set value, the output voltage of the AC/DC conversion circuit is unchanged, and the DC/DC conversion circuit adjusts the voltage to enable the output of the DC/DC conversion circuit to be equal to the load voltage. The technical scheme of the invention further improves the efficiency of the adapter.
Description
Technical Field
The present invention relates to an adapter for supplying power to a power terminal, and more particularly, to an adapter having a plurality of power supply ports.
Background
In the multi-output adapter, in order to adjust the output voltage of each output port conveniently, a scheme that multiple Buck buses are input in common is generally adopted, and the conversion efficiency of the whole machine is reduced due to the fact that one-stage Buck power conversion is added. Therefore, a new architecture is needed to improve the conversion efficiency of the whole adapter.
Disclosure of Invention
The invention provides an adapter which can effectively improve the conversion efficiency of the whole adapter.
In order to achieve the purpose, the invention adopts the technical scheme that:
an adapter comprises an AC/DC conversion circuit and a DC/DC conversion circuit, wherein the output end of the AC/DC conversion circuit is connected with the input end of the DC/DC conversion circuit in parallel, the output end of the DC/DC conversion circuit is connected with a load, when the load voltage is greater than a set value, the DC/DC conversion circuit is connected in a straight-through mode, the output voltage of the AC/DC conversion circuit is adjustable and equal to the load voltage, when the load voltage is not greater than the set value, the output voltage of the AC/DC conversion circuit is unchanged, and the DC/DC conversion circuit adjusts the voltage to enable the output of the AC/DC conversion circuit to be equal to the load voltage.
The adapter further comprises a fourth switch, wherein the fourth switch is connected between the positive input electrode and the positive output electrode of the DC/DC conversion circuit, and when the output voltage of the AC/DC conversion circuit is adjustable and equal to the load voltage, the fourth switch is turned on, otherwise, the fourth switch is turned off.
The DC/DC conversion circuit is a buck conversion topology.
The AC/DC conversion circuit comprises an AC/DC conversion module and a DC/DC conversion module, wherein the AC/DC conversion module receives alternating current input, the output end of the AC/DC conversion module is connected with the input end of the DC/DC conversion module in parallel, the output end of the DC/DC conversion module is connected with the DC/DC conversion circuit in parallel, and when the output voltage of the AC/DC conversion circuit is adjustable and equal to the load voltage, the output voltage of the DC/DC conversion module is adjustable and equal to the load voltage.
A multiport adapter comprises an AC/DC conversion circuit and a plurality of DC/DC conversion circuits, wherein the input ends of the plurality of DC/DC conversion circuits are connected with the output end of the AC/DC conversion circuit in parallel, the output ends of the DC/DC conversion circuits are respectively connected with a load, the voltage of the x-th load is detected, the voltage of the x-th load is identified to be the largest, the DC/DC conversion circuit connected with the x-th load in parallel is connected in a through mode, the output voltage of the AC/DC conversion circuit is adjustable and equal to the voltage of the x-th load, and the other DC/DC conversion circuits adjust the output voltage of the AC/DC conversion circuit to be equal to the respective load voltage.
The multi-port adapter further comprises a plurality of fourth switches, the fourth switches are respectively connected between the input positive electrode and the output positive electrode of the DC/DC conversion circuit, the fourth switches at two ends of the DC/DC conversion circuit connected with the x-th load in parallel are turned on, and the rest of the fourth switches are turned off.
The DC/DC conversion circuit is a buck conversion topology.
The AC/DC conversion circuit comprises an AC/DC conversion module and a DC/DC conversion module, wherein the AC/DC conversion module receives alternating current input, the output end of the AC/DC conversion module is connected with the input end of the DC/DC conversion module in parallel, the output end of the DC/DC conversion module is connected with the DC/DC conversion circuit in parallel, and the output voltage of the DC/DC conversion module is adjustable and equal to the voltage of the xth load.
The invention also provides an adapter port voltage regulating method, which comprises the following steps:
setting an AC/DC conversion circuit and a DC/DC conversion circuit, wherein the AC/DC conversion circuit outputs bus voltage, and the DC/DC conversion circuit converts the bus voltage into load voltage;
detecting load voltage, and if the load voltage is greater than a first set value, directly outputting the load voltage by the AC/DC conversion circuit; otherwise, the AC/DC conversion circuit outputs the bus voltage, and the DC/DC conversion circuit converts the bus voltage into load voltage for output.
The invention also provides another adapter port voltage regulating method, which comprises the following steps: the method comprises the steps that an AC/DC conversion circuit and a plurality of DC/DC conversion circuits are arranged, the AC/DC conversion circuit outputs bus voltage, and the plurality of DC/DC conversion circuits respectively convert the bus voltage into load voltage; the load voltages of the multiple ports are detected, the load voltage value of the x-th port is judged to be the largest, the AC/DC conversion circuit outputs the load voltage value of the x-th port as bus voltage, the DC/DC conversion circuits connected with the x-th port in parallel are connected in a straight-through mode, and the rest DC/DC conversion circuits convert the bus voltage into the load voltage.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic view of a first embodiment of the adapter of the present invention.
Fig. 2 is a schematic view of a second embodiment of the adapter of the present invention.
Fig. 3 is a schematic view of a third embodiment of the adapter of the present invention.
Fig. 4 is a schematic view of a third embodiment of the adapter of the present invention.
Fig. 5 is a block diagram of an embodiment of the AC/DC conversion circuit 11 of the present invention.
FIG. 6 is a flowchart illustrating a first embodiment of a method for adjusting adapter port voltage according to the present invention.
FIG. 7 is a flowchart illustrating a method for adjusting the port voltage of the adapter according to a second embodiment of the present invention.
Fig. 8 is a flowchart of a third embodiment of the adapter port voltage adjustment method of the present invention.
FIG. 9 is a flowchart illustrating a fourth embodiment of a method for adjusting adapter port voltage according to the present invention.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The terms "first," "second," "third," and the like (if any) in this description are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the subject matter described herein are, for example, capable of operation in other sequences than those illustrated or otherwise described herein. Further, wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
As shown in fig. 1, the adaptor includes an AC/DC conversion circuit 11 and a DC/DC conversion circuit 12, an output terminal of the AC/DC conversion circuit 11 outputs a voltage Vbus and is connected in parallel to an input terminal of the DC/DC conversion circuit 12, the DC/DC conversion circuit outputs a voltage Vo1, please refer to fig. 6, the port voltage regulating method applied to the adaptor shown in fig. 1 detects a load voltage Vo, the DC/DC conversion circuit 12 is turned through when the voltage Vo is greater than a set value, switches S1 and S2 are turned on, the AC/DC conversion circuit 11 regulates the voltage Vbus to be equal to the voltage Vo, and the output voltage Vbus of the AC/DC conversion circuit 11 is kept constant when the voltage Vo is not greater than the set value, and the DC/DC conversion circuit regulates its output to be equal to the voltage Vo.
Referring to fig. 5, the AC/DC conversion circuit 11 includes an AC/DC conversion module 111 and a DC/DC conversion module 112, the AC/DC conversion module 111 and the DC/DC conversion module 112 are connected in series, the AC/DC conversion module 111 rectifies the input alternating current vin, and the DC/DC conversion module 112 regulates the output of the AC/DC conversion module 111 and outputs a voltage Vbus. When the voltage Vo1 is not greater than the set value, the output voltage Vbus of the DC/DC conversion module 112 remains unchanged, and when the voltage Vo1 is greater than the set value, the DC/DC conversion circuit regulates the voltage to have an output equal to the voltage Vo 1. The DC/DC conversion module 112 samples the output voltage and compares it with a reference value to generate a driving signal that controls its master switch.
The topology of the DC/DC conversion circuit 12 shown in fig. 1 is a BUCK topology, but the invention is not limited thereto, and any topology capable of implementing DC/DC conversion can be used, such as a BOOST topology.
In the embodiment shown in fig. 2, unlike fig. 1, a switch S4 is connected in parallel between the input positive electrode and the output positive electrode of the DC/DC converter circuit 12.
As shown in fig. 7, the port voltage adjusting method applied to the embodiment shown in fig. 5 detects the load voltage Vo, when the load voltage Vo is greater than the set value, the AC/DC converting circuit adjusts the voltage to make the output of the AC/DC converting circuit equal to the voltage Vo, the switch S4 is turned on, otherwise, the switch S4 is turned off, the AC/DC converting circuit outputs the voltage Vbus, and the DC/DC converting circuit adjusts the voltage to make the output of the DC/DC converting circuit equal to the load voltage Vo.
In the embodiment shown in fig. 3, the adapter includes a plurality of DC/DC conversion circuits, and the output terminal of each DC/DC conversion circuit is a port of the adapter.
The output end of the AC/DC conversion circuit 11 outputs a voltage Vbus, and is connected in parallel to the input ends of the plurality of DC/DC conversion circuits, and the plurality of DC/DC conversion circuits output voltages Von, respectively. The invention also provides a control method based on the circuit, as shown in fig. 8, the load voltage Von of each port is detected, and the load voltage Vox of the x-th port is judged to be the maximum value, the AC/DC conversion circuit 11 adjusts the voltage Vbus to be equal to the voltage Vox, the DC/DC conversion circuit 12x is through, the switches S4x-3 and S4x-1 are turned on, and the AC/DC conversion circuit 11 adjusts the voltage Vbus to be equal to the voltage Vox.
For example, when n ═ 2, the adapter includes two ports, let Vbus ═ Vo1 when Vo1> Vo 2. For the first port, S3 is normally on, the switching tube S1 of the DC/DC conversion circuit 121 is normally on, and S2 is off, the DC/DC conversion circuit 121 can obtain the maximum conversion efficiency. For the second port, S7 is normally on, and the DC/DC converter circuit 122 normally performs a switching operation.
Let Vbus be Vo2 when Vo2> Vo 1. The duty ratio of the DC/DC converter circuit 122 is constant at 1, and the DC/DC converter circuit 121 performs a switching operation.
In the embodiment shown in fig. 4, each DC/DC converter circuit 12n is connected in parallel with a switch S4n, and the switch S4n is connected in parallel between the input positive pole and the output positive pole of the DC/DC converter circuit 12 n.
The port voltage adjusting method shown in fig. 9 is applied to the embodiment shown in fig. 4, the load voltage Von of each port is detected, and it is determined that the load voltage Vox of the x-th port is the maximum value, the AC/DC converting circuit 11 adjusts the voltage Vbus to be equal to the voltage Vox, the DC/DC converting circuit 12x is through, the switch S4x is turned on, and the AC/DC converting circuit 11 adjusts the voltage Vbus to be equal to the voltage Vox.
The invention designs Vbus to be adjustable, which makes Vbus equal to the larger load voltage, and fixes the duty ratio of the DC/DC conversion circuit with higher output voltage to 1, thus only the switch of the DC/DC conversion circuit with lower output voltage is doing switching action. Thereby improving the conversion efficiency of the whole machine
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An adapter is characterized by comprising an AC/DC conversion circuit and a DC/DC conversion circuit, wherein the output end of the AC/DC conversion circuit is connected with the input end of the DC/DC conversion circuit in parallel, the output end of the DC/DC conversion circuit is connected with a load, the DC/DC conversion circuit is connected in a straight-through mode when the load voltage is larger than a set value, the output voltage of the AC/DC conversion circuit is adjustable and equal to the load voltage, the output voltage of the AC/DC conversion circuit is unchanged when the load voltage is not larger than the set value, and the DC/DC conversion circuit is adjusted to enable the output of the DC/DC conversion circuit to be equal to the load voltage.
2. An adapter as recited in claim 1, further comprising a fourth switch connected between the positive input terminal and the positive output terminal of said DC/DC converter circuit, said fourth switch being turned on when the output voltage of said AC/DC converter circuit is regulated and equal to the load voltage, and being turned off otherwise.
3. An adapter as recited in claim 2, wherein said DC/DC conversion circuit is a buck conversion topology.
4. An adapter as recited in claim 3, wherein said AC/DC converter circuit includes an AC/DC converter module and a DC/DC converter module, said AC/DC converter module receiving an AC input, said AC/DC converter module having an output connected in parallel with an input of said DC/DC converter module, said DC/DC converter module having an output connected in parallel with said DC/DC converter circuit, said DC/DC converter module having an output voltage that is adjustable and equal to a load voltage, said output voltage of said DC/DC converter module being adjustable and equal to said load voltage.
5. A multiport adapter is characterized by comprising an AC/DC conversion circuit and a plurality of DC/DC conversion circuits, wherein the input ends of the plurality of DC/DC conversion circuits are connected with the output end of the AC/DC conversion circuit in parallel, the output ends of the DC/DC conversion circuits are respectively connected with a load, the voltage of the x-th load is detected, the voltage of the x-th load is identified to be the largest, the DC/DC conversion circuit connected with the x-th load in parallel is connected in a through mode, the output voltage of the AC/DC conversion circuit is adjustable and equal to the voltage of the x-th load, and the other DC/DC conversion circuits adjust the output voltage of the AC/DC conversion circuit to be equal to the respective load voltage.
6. The multi-port adapter as claimed in claim 5, further comprising a plurality of fourth switches respectively connected between the input positive electrode and the output positive electrode of said DC/DC conversion circuit, wherein the fourth switches across the DC/DC conversion circuit connected in parallel with said xth load are turned on, and the remaining of said fourth switches are turned off.
7. An adapter as described in claim 6, wherein said DC/DC conversion circuit is a buck conversion topology.
8. An adapter as recited in claim 7, wherein said AC/DC conversion circuit comprises an AC/DC conversion module and a DC/DC conversion module, said AC/DC conversion module receiving an AC input, said AC/DC conversion module having an output connected in parallel with a DC/DC conversion module input, said DC/DC conversion module having an output connected in parallel with a DC/DC conversion circuit, said DC/DC conversion module having an output voltage that is adjustable and equal to the voltage of the xth load.
9. The method for adjusting the voltage of the adapter port is characterized by comprising the following steps:
setting an AC/DC conversion circuit and a DC/DC conversion circuit, wherein the AC/DC conversion circuit outputs bus voltage, and the DC/DC conversion circuit converts the bus voltage into load voltage;
detecting load voltage, and if the load voltage is greater than a first set value, directly outputting the load voltage by the AC/DC conversion circuit; otherwise, the AC/DC conversion circuit outputs the bus voltage, and the DC/DC conversion circuit converts the bus voltage into load voltage for output.
10. The method for adjusting the voltage of the adapter port is characterized by comprising the following steps:
the method comprises the steps that an AC/DC conversion circuit and a plurality of DC/DC conversion circuits are arranged, the AC/DC conversion circuit outputs bus voltage, and the plurality of DC/DC conversion circuits respectively convert the bus voltage into load voltage;
the load voltages of the multiple ports are detected, the load voltage value of the x-th port is judged to be the largest, the AC/DC conversion circuit outputs the load voltage value of the x-th port as bus voltage, the DC/DC conversion circuits connected with the x-th port in parallel are connected in a straight-through mode, and the rest DC/DC conversion circuits convert the bus voltage into the load voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372425.5A CN113014083A (en) | 2021-04-07 | 2021-04-07 | Adapter and port voltage adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372425.5A CN113014083A (en) | 2021-04-07 | 2021-04-07 | Adapter and port voltage adjusting method thereof |
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| Publication Number | Publication Date |
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| CN113014083A true CN113014083A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110372425.5A Pending CN113014083A (en) | 2021-04-07 | 2021-04-07 | Adapter and port voltage adjusting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI796859B (en) * | 2021-12-03 | 2023-03-21 | 偉詮電子股份有限公司 | Power supplies with multiple ports, and control methods thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270812A1 (en) * | 2004-02-24 | 2005-12-08 | Patrizio Vinciarelli | Universal AC adapter |
| CN101668369A (en) * | 2009-10-01 | 2010-03-10 | 英飞特电子（杭州）有限公司 | High-efficiency constant-current LED driver |
| CN201919217U (en) * | 2010-12-27 | 2011-08-03 | 英飞特电子（杭州）有限公司 | Load driving device and system |
| CN110120752A (en) * | 2018-02-05 | 2019-08-13 | 台达电子企业管理（上海）有限公司 | Power inverter and its control method |
-
2021
- 2021-04-07 CN CN202110372425.5A patent/CN113014083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270812A1 (en) * | 2004-02-24 | 2005-12-08 | Patrizio Vinciarelli | Universal AC adapter |
| CN101668369A (en) * | 2009-10-01 | 2010-03-10 | 英飞特电子（杭州）有限公司 | High-efficiency constant-current LED driver |
| CN201919217U (en) * | 2010-12-27 | 2011-08-03 | 英飞特电子（杭州）有限公司 | Load driving device and system |
| CN110120752A (en) * | 2018-02-05 | 2019-08-13 | 台达电子企业管理（上海）有限公司 | Power inverter and its control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI796859B (en) * | 2021-12-03 | 2023-03-21 | 偉詮電子股份有限公司 | Power supplies with multiple ports, and control methods thereof |
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