CN115203108A - Expansion device supporting downlink port PD output - Google Patents
Expansion device supporting downlink port PD output Download PDFInfo
- Publication number
- CN115203108A CN115203108A CN202211125418.6A CN202211125418A CN115203108A CN 115203108 A CN115203108 A CN 115203108A CN 202211125418 A CN202211125418 A CN 202211125418A CN 115203108 A CN115203108 A CN 115203108A
- Authority
- CN
- China
- Prior art keywords
- interface
- power supply
- circuit
- electrically connected
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Power Sources (AREA)
Abstract
The invention provides an expansion device supporting downlink port PD output, which comprises: the system comprises an uplink port, a power interface for an external power supply, a protocol chip respectively and electrically connected with the power interface and the uplink port, a fast charging protocol control chip electrically connected with the protocol chip, a first interface and a first power circuit electrically connected with the fast charging protocol control chip, a first concentrator respectively and electrically connected with the uplink port and the first interface, a switching tube circuit respectively and electrically connected with the uplink port, the power interface and the first power circuit, and a first driving circuit respectively and electrically connected with the protocol chip and the switching tube circuit. The first power supply circuit is also electrically connected with the first interface, and the uplink port performs data transmission with the first interface through the first concentrator so as to realize quick charging of the downlink port under the condition of charging the equipment to be expanded.
Description
Technical Field
The invention relates to the technical field of computer peripheral electronic products, in particular to an expansion device supporting the output of a downlink port PD.
Background
As is known, a docking station is an external device designed for a notebook computer. The docking station can enable the notebook computer to have a charging interface, a plurality of USB interfaces and a video interface by copying or even expanding the port of the notebook computer, and the notebook computer with only one TYPE-C interface can be connected with a plurality of accessories or external equipment in a one-stop mode.
At present, a downlink port of an existing docking station for charging an external mobile terminal does not have a fast charging (PD) output function, and cannot meet the requirements of users. And the existing docking station generally adopts a DC socket to be connected with a power supply for supplying power, and the power supply mode needs to be matched with an adapter for use, so that the purchase cost of a user is increased.
Accordingly, the prior art is in need of improvement and development.
Disclosure of Invention
The invention aims to provide an expansion device supporting the output of a PD (personal digital Assistant) of a downlink port, which is used for solving the problem that the downlink port for charging an external mobile terminal by the existing docking station does not have the PD output function.
The technical scheme of the invention is as follows: an expansion device supporting the output of a PD on a downstream port, comprising: the system comprises an uplink port, a power interface for externally connecting a power supply, a protocol chip respectively and electrically connected with the power interface and the uplink port, a fast charging protocol control chip electrically connected with the protocol chip, a first interface and a first power circuit electrically connected with the fast charging protocol control chip, a first concentrator respectively and electrically connected with the uplink port and the first interface, a switching tube circuit respectively and electrically connected with the uplink port, the power interface and the first power circuit, and a first driving circuit respectively and electrically connected with the protocol chip and the switching tube circuit; the first power supply circuit is also electrically connected with a first interface, and the uplink port performs data transmission with the first interface through a first hub;
when the power interface is not connected with a power supply, the uplink port is used for connecting equipment to be expanded and inputting a first power supply from the equipment to be expanded, the switching tube circuit outputs the first power supply input by the uplink port to the protocol chip and the first power supply circuit respectively, the protocol chip is used for feeding back a first level to the quick-charge protocol control chip, and the quick-charge protocol control chip controls the first power supply circuit to output a first charging power supply to the first interface according to the first level;
when the power interface is connected with a power supply, the switching tube circuit is used for respectively outputting a second power supply input by the power interface to the protocol chip and the first power supply circuit; when the protocol chip judges that the second power supply is larger than the preset power supply, the protocol chip feeds back a second level to the quick charging protocol control chip; the quick charge protocol control chip outputs a first feedback voltage to the first power supply circuit according to the second level and when the first interface detects that the equipment to be charged has the quick charge protocol, and the first power supply circuit boosts the power supply output by the switching tube circuit according to the first feedback voltage and outputs a quick charge power supply to the first interface; when the power interface is connected with a power supply, the protocol chip controls a second power supply input by the power interface of the switching tube circuit to be output to the uplink port through the first driving circuit, and the uplink port charges the power supply output by the switching circuit to the equipment to be expanded.
Further, when the protocol chip judges that the second power supply is smaller than the preset power supply, the protocol chip feeds back a first level to the quick charge protocol control chip; and the quick charging protocol control chip controls the first power supply circuit to output a first charging power supply to the first interface according to the first level.
Furthermore, the expansion device further comprises a multiplexer connected between the first interface and the first hub, and the multiplexer is also electrically connected with the fast charging protocol control chip;
the first interface is a USB-C interface, the quick-charging protocol control chip comprises a first detection pin and a second detection pin, the first detection pin and the second detection pin are used for detecting that the equipment to be charged is provided with a quick-charging protocol, the quick-charging protocol control chip judges that the first interface is forwardly connected to the equipment to be charged according to a quick-charging protocol signal fed back by the first detection pin, the quick-charging protocol control chip judges that the first interface is reversely connected to the equipment to be charged according to a quick-charging protocol signal fed back by the second detection pin, the quick-charging protocol control chip outputs a first switch signal to the multiplexer according to the quick-charging protocol signal fed back by the second detection pin, and the multiplexer reversely outputs a USB signal to the first interface according to the first switch signal.
Further, the power interface is a USB-C interface.
Further, the expansion device further includes: a second interface is electrically connected to the first hub.
Further, the expansion device further includes: a second hub electrically connected to the first hub, and a number of third interfaces electrically connected to the second hub.
Further, the expansion device further includes: the current-limiting protection circuit and a second power supply circuit are electrically connected with the switching tube circuit; the second power supply circuit is used for supplying power to the first concentrator, the second concentrator, the protocol chip, the video converter, the video interface and the fast charging protocol control chip;
the input end of the current-limiting protection circuit is electrically connected with the second power supply circuit, and the output end of the current-limiting protection circuit is respectively connected with the second interface and the third interface.
Further, the switching tube circuit comprises a first switching tube and a second switching tube, and the first driving circuit comprises a third switching tube; the drain electrode of the first switching tube is electrically connected with the uplink port, the source electrode of the first switching tube is respectively electrically connected with the grid electrode of the first switching tube, the source electrode of the second switching tube, the grid electrode of the second switching tube, the drain electrode of the third switching tube, the first power supply circuit and the second power supply circuit, the drain electrode of the second switching tube is electrically connected with the power supply interface, the source electrode of the third switching tube is grounded, and the grid electrode of the third switching tube is electrically connected with the protocol chip;
when the power interface is connected with a power supply, the protocol chip controls the third switching tube to be conducted, and enables the first switching tube to be conducted to output a second power supply input by the power interface to the uplink port after passing through the second switching tube.
Further, the expansion device further includes: the first detection circuit is respectively and electrically connected with the uplink port and the protocol chip, and the second detection circuit is respectively and electrically connected with the power interface and the protocol chip;
the protocol chip judges the charging power of the power supply according to the first detection circuit, and the protocol chip also judges the size of the second power supply input by the power supply interface through the second detection circuit.
Furthermore, the first detection circuit comprises a first resistor and a second resistor, the VBUS end in the uplink port is grounded through the first resistor and the second resistor in sequence, and the output end of the first resistor is electrically connected with the protocol chip;
the second detection circuit comprises a third resistor and a fourth resistor, a power supply input by the power supply interface is grounded through the third resistor and the fourth resistor in sequence, and the output end of the third resistor is electrically connected with the protocol chip.
The invention has the beneficial effects that: compared with the prior art, the power interface is connected with the power supply, the protocol chip is used for detecting the size of the power supply input by the power interface and outputting the second level to the quick-charging protocol control chip when the power supply input by the power interface is larger than a certain value, and the quick-charging protocol control chip controls the first power circuit to boost the voltage to the first interface and output the first charging power supply to the first interface according to the second level and when the quick-charging protocol is detected to exist in the equipment to be charged connected with the first interface, so that the expansion device can output the PD to the downlink port. And when the equipment to be charged accessed by the first interface does not have the quick charging function or when the power interface is not accessed with a power supply, the common charging power supply is output to the downlink port to charge the equipment to be charged. In addition, when the power supply is input into the power supply interface, the device to be expanded can be charged, so that the quick charging can be carried out on the downlink port under the condition of charging the device to be expanded.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a circuit diagram of a switching tube circuit and a first driving circuit according to the present invention;
FIG. 3 is a circuit diagram of a second detection circuit according to the present invention;
FIG. 4 is a circuit diagram of a first detection circuit according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and the embodiments.
Referring to fig. 1-4, an expansion device for supporting output of a downstream port PD according to an embodiment of the present invention is shown.
Referring to fig. 1, the expansion device supporting the output of the downstream port PD includes: the system comprises an uplink port 2, a power interface 1 for an external power supply, a protocol chip 4 respectively electrically connected with the power interface 1 and the uplink port 2, a fast charging protocol control chip 6 electrically connected with the protocol chip 4, a first interface 75 and a first power circuit 52 electrically connected with the fast charging protocol control chip 6, a first concentrator 7 respectively electrically connected with the uplink port 2 and the first interface 75, a switch tube circuit 5 respectively electrically connected with the uplink port 2, the power interface 1 and the first power circuit 52, and a first driving circuit 51 respectively electrically connected with the protocol chip 4 and the switch tube circuit 5. The first power circuit 52 is also electrically connected to the first interface 75, and the upstream port 2 performs data transmission with the first interface 75 through the first hub 7.
When the power interface 1 is not connected to a power supply, the uplink port 2 is used for connecting a device to be expanded and inputting a first power supply from the device to be expanded, the switching tube circuit 5 outputs the first power supply input by the uplink port 2 to the protocol chip 4 and the first power supply circuit 52 respectively, the protocol chip 4 is used for feeding back a first level to the rapid charging protocol control chip 6, and the rapid charging protocol control chip 6 controls the first power supply circuit 52 to output a first charging power supply to the first interface 75 according to the first level.
When the power interface 1 is connected to a power supply, the switching tube circuit 5 is configured to output the second power input by the power interface 1 to the protocol chip 4 and the first power circuit 52, respectively; and when the protocol chip 4 judges that the second power supply is larger than the preset power supply, the protocol chip 4 feeds back a second level to the quick charging protocol control chip 6. The fast charging protocol control chip 6 outputs a first feedback voltage to the first power circuit 52 according to the second level and when detecting that the device to be charged has the fast charging protocol through the first interface 75, and the first power circuit 52 boosts the power output by the switching tube circuit 5 according to the first feedback voltage and outputs a fast charging power to the first interface 75. When the power interface 1 is connected to a power supply, the protocol chip 4 controls the switching tube circuit 5 through the first driving circuit 51, and the second power supply input by the power interface 1 is output to the uplink port 2, and the uplink port 2 charges the device to be expanded with the power supply output by the switching circuit.
According to the invention, the power supply is connected to the power supply interface 1, the protocol chip 4 is used for detecting the size of the power supply input by the power supply interface 1, and when the power supply input by the power supply interface 1 is larger than a certain value, a second level is output to the quick charging protocol control chip 6, and the quick charging protocol control chip 6 controls the first power supply circuit 52 to boost the voltage to the first interface 75 to output the first charging power supply when detecting that the equipment to be charged connected to the first interface 75 has a quick charging protocol according to the second level, so that the PD output of the expansion device to the downlink port is realized, and the problem that the downlink port of the existing expansion dock for charging an external mobile terminal does not have the PD output function is solved. And when the device to be charged accessed by the first interface 75 does not have the quick charging function or when the power supply interface 1 is not accessed by the power supply, the common charging power supply is output to the downlink port to charge the device to be charged. In addition, when the power supply is input to the power supply interface 1, the device to be expanded can be charged, so that the downlink port can be quickly charged under the condition of charging the device to be expanded.
Specifically, the device to be charged may be a flashlight, a tablet, and the like, and the device to be expanded may be a notebook computer, a mobile phone, and the like, which is not limited herein.
In an embodiment, when the protocol chip 4 determines that the second power input by the power interface 1 is smaller than the preset power, the protocol chip 4 feeds back the first level to the fast charging protocol control chip 6. The fast charging protocol control chip 6 controls the first power circuit 52 to output the first charging power to the first interface 75 according to the first level, so as to provide a common voltage to the downlink port.
Specifically, in this embodiment, the protocol chip 4 may be a chip of a type such as VL103 or VL102, and the quick charging protocol control chip 6 may be a chip of a type such as SC2151 or SC 2021. The first power supply circuit 52 includes a first power supply chip, which may be a chip of a model such as IM2603, MT3905, or the like, and is not limited herein.
In an embodiment, the expansion device further includes a multiplexer 71 connected between the first interface 75 and the first hub 7, and the multiplexer 71 is further electrically connected to the fast charge protocol control chip 6.
The first interface 75 is a USB-C interface, and as is well known, the USB-C interface can be inserted in a forward direction or a reverse direction when in use, and the forward insertion and the reverse insertion respectively have a CC1 channel and a CC2 channel, for this reason, to detect the direction of the insertion of the USB-C interface, the fast charging protocol control chip 6 includes a first detection pin and a second detection pin for detecting that the device to be charged has the fast charging protocol, where the first detection pin is connected to the CC1 channel on the USB-C interface, and the second detection pin is connected to the CC2 channel on the USB-C interface.
Based on this, the fast charge protocol control chip 6 can determine that the first interface 75 is accessed to the device to be charged in the forward direction according to the fast charge protocol signal fed back by the first detection pin, and the fast charge protocol control chip 6 can determine that the first interface 75 is accessed to the device to be charged in the reverse direction according to the fast charge protocol signal fed back by the second detection pin. The multiplexer 71 has a common channel and a plurality of branch channels therein, and a switch is connected between the common channel and the plurality of branch channels to switch the branch channels according to an external signal. Furthermore, when the fast charging protocol control chip 6 detects that the device to be charged is connected to the host according to the first detection pin, the fast charging protocol control chip 6 outputs a default signal to the multiplexer 71, so that the multiplexer 71 connects the hub to the first interface 75. The second fast charge protocol control chip 6 may output a first switch signal to the multiplexer 71 according to the fast charge protocol signal fed back by the second detection pin, and the multiplexer 71 reversely outputs the USB signal to the first interface 75 according to the first switch signal.
Specifically, the multiplexer 71 may be a chip of VL162, VL163, or the like, and is not limited herein.
In an embodiment, the power interface 1 is a USB-C interface, and since the power interface 1 of the conventional docking station is generally a DC interface and is used in cooperation with the DC interface, a user needs to purchase an adapter used in cooperation with the DC interface, which increases the expenditure cost. And because the user generally will dispose suitable adapter when purchasing extension equipment such as notebook computer, cell-phone to realize the fast fill. The power interface 1 is set as a USB-C interface, so that the expenditure of purchasing an adapter by a user can be reduced, and the purchasing cost of the expansion device is reduced.
Specifically, in the present embodiment, the first hub 7 has a function of expanding a set of USB signals into four sets of USB signals, and each USB signal includes a USB2.0 signal and a USB3.0 signal, and the first hub 7 uses the set of USB signals through the first interface 75.
In one embodiment, the expansion device further comprises: a card reader 73 electrically connected to the first hub 7, and an SD card slot and/or a TF card slot 77 electrically connected to the card reader 73. The first hub 7 provides a set of USB signals to the card reader 73 to implement expansion of SD card slot and TF card slot.
In one embodiment, the expansion device further comprises: a network card 72 electrically connected to the first hub 7, and a network port 76 electrically connected to the network card 72. The first hub 7 further provides a set of USB signals for the network card 72 to expand the network outlet 76, and the network outlet 76 is connected to a network cable, so that the network speed of computer data transmission can be increased, and the user experience can be improved.
In an embodiment, the expansion device further comprises a second interface 74 electrically connected to the first hub 7. The first hub 7 also provides ase:Sub>A set of USB signals to the second interface 74, and the second interface 74 is ase:Sub>A USB-ase:Sub>A interface for connecting devices such as ase:Sub>A USB disk and ase:Sub>A printer.
In one embodiment, the expansion device further comprises: a second hub 8 electrically connected to the first hub 7, and a number of third interfaces 81 electrically connected to the second hub 8. Specifically, the first hub 7 uses the USB2.0 signal of the group of USB signals from the second hub 8, and can expand 4 groups of USB2.0 signals using the second hub 8, so that a maximum of 4 third interfaces 81 can be expanded using the second hub 8.
In one embodiment, the expansion device further comprises: a current limiting protection circuit 54 and a second power supply circuit 53 electrically connected to the switching tube circuit 5. The second power circuit 53 is used for supplying power to the first hub 7, the second hub 8, the protocol chip 4, the video converter, the video interface and the fast charging protocol control chip 6, the input end of the current limiting protection circuit 54 is electrically connected with the second power circuit 53, and the output end of the current limiting protection circuit is respectively connected with the second interface 74 and the third interface 81, so that current backflow is prevented when the second interface 74 and the third interface 81 are connected with electrical equipment.
Specifically, referring to fig. 2, in an embodiment, the first power source input by the uplink port 2 from the device to be expanded is VBUS, and the second power source input by the power interface 1 is 5V to 20V. The switching tube circuit 5 includes a first switching tube Q1 and a second switching tube Q2, and the first driving circuit 51 includes a third switching tube Q3. The drain of the first switch tube Q1 is electrically connected to the uplink port 2, the source of the first switch tube Q1 is electrically connected to the gate of the first switch tube Q1, the source of the second switch tube Q2, the gate of the second switch tube Q2, the drain of the third switch tube Q3, the first power circuit 52 and the second power circuit 53, respectively, the drain of the second switch tube Q2 is electrically connected to the power interface 1, the source of the third switch tube Q3 is grounded, and the gate of the third switch tube Q3 is electrically connected to the protocol chip 4.
When the uplink port 2 is connected to the device to be expanded and the power interface 1 is not connected to the power supply, the power supply VBUS input by the device to be expanded through the uplink port 2 flows through the diode in the first switch tube Q1 and is then output to the first power supply circuit 52, so that power is supplied to the internal circuit of the expansion device.
When the uplink port 2 is connected to the device to be expanded, and when the power interface 1 is connected to a power supply, the protocol chip 4 controls the third switching tube Q3 to be conducted when detecting that the power interface 1 is connected to the power supply, the third switching tube Q3 is conducted to pull down the voltage of the gate of the first switching tube Q1, so that the first switching tube Q1 is conducted, so that the power supply input by the power interface 1 can sequentially pass through the diode in the second switching tube Q2, the first switching tube Q1 and the uplink port 2 to charge the device to be expanded, and when the power supply input by the power interface 1 is a quick-charging power supply of the device to be expanded, the protocol chip 4 can control the duty ratio conducted by the first switching tube Q1 through the third switching tube Q3 to control the output of the power supply, so as to output a suitable power supply to the device to be expanded, and prevent the device to be expanded from being damaged. And the power input by the power interface 1 is transmitted to the first power circuit 52 through the diode in the second switch tube Q2, so as to supply power to the downlink port.
In one embodiment, the expansion device further comprises: a first detection circuit 11 electrically connected to the uplink port 2 and the protocol chip 4, respectively, and a second detection circuit 53 electrically connected to the power interface 1 and the protocol chip 4, respectively. The protocol chip 4 judges the power charging power according to the first detection circuit 11, and the protocol chip 4 also judges the magnitude of the second power input by the power interface 1 through the second detection circuit 53. Therefore, the protocol chip 4 can know the voltage of the power input and the charging size of the device to be expanded, so as to control the output of the power supply by controlling the duty ratio of the conduction of the first switching tube Q1 through the third switching tube Q3.
Specifically, referring to fig. 3 and fig. 4, the first detection circuit 11 includes a first resistor R16 and a second resistor R19, the VBUS terminal in the uplink port 2 is grounded through the first resistor R16 and the second resistor R19 in sequence, the output terminal of the first resistor R16 is electrically connected to the protocol chip 4, and the protocol chip 4 determines the charging voltage applicable to the device to be expanded by using the voltage fed back after voltage division by the first resistor R16 and the second resistor R19.
The second detection circuit 53 includes a third resistor R12 and a fourth resistor R13, the power source accessed by the power source interface 1 is grounded through the third resistor R12 and the fourth resistor R13 in sequence, the output end of the third resistor R12 is electrically connected with the protocol chip 4, and the protocol chip 4 realizes the judgment of the size of the power source input by the power source interface 1 by using the voltage fed back after the voltage division of the third resistor R12 and the fourth resistor R13.
In one embodiment, the expansion device further comprises: a video converter 3 electrically connected to the upstream port 2 and the protocol chip 4, and a third resistor 31 electrically connected to the video converter 3. The third resistor 31 is used for connecting a display, and the video converter 3 is used for converting the DP video signal output from the upstream port 2 and outputting the converted signal from the third resistor 31. The third resistor 31 is an HDMI interface, and the video converter 3 is configured to convert the DP video signal output from the upstream port 2 into an HDMI signal and transmit the HDMI signal to the third resistor 31.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. An expansion device supporting output of a PD on a downstream port, comprising: the system comprises an uplink port, a power interface for externally connecting a power supply, a protocol chip respectively and electrically connected with the power interface and the uplink port, a fast charging protocol control chip electrically connected with the protocol chip, a first interface and a first power circuit electrically connected with the fast charging protocol control chip, a first concentrator respectively and electrically connected with the uplink port and the first interface, a switching tube circuit respectively and electrically connected with the uplink port, the power interface and the first power circuit, and a first driving circuit respectively and electrically connected with the protocol chip and the switching tube circuit; the first power supply circuit is also electrically connected with the first interface, and the uplink port performs data transmission with the first interface through the first concentrator;
when the power interface is not connected with a power supply, the uplink port is used for connecting equipment to be expanded and inputting a first power supply from the equipment to be expanded, the switching tube circuit outputs the first power supply input by the uplink port to the protocol chip and the first power supply circuit respectively, the protocol chip is used for feeding back a first level to the quick-charge protocol control chip, and the quick-charge protocol control chip controls the first power supply circuit to output a first charging power supply to the first interface according to the first level;
when the power interface is connected with a power supply, the switching tube circuit is used for respectively outputting a second power supply input by the power interface to the protocol chip and the first power supply circuit; when the protocol chip judges that the second power supply is larger than the preset power supply, the protocol chip feeds back a second level to the quick charging protocol control chip; the fast charging protocol control chip outputs a first feedback voltage to the first power circuit according to the second level and when the first interface detects that the equipment to be charged has the fast charging protocol, and the first power circuit boosts the power output by the switching tube circuit according to the first feedback voltage and then outputs a fast charging power to the first interface; the protocol chip also controls a second power supply input by the power supply interface of the switching tube circuit to be output to the uplink port through the first driving circuit, and the uplink port charges the equipment to be expanded with the power supply output by the switching circuit.
2. The extension device supporting downlink port PD output according to claim 1, wherein when the protocol chip determines that the second power supply is smaller than a preset power supply, the protocol chip feeds back a first level to the fast charging protocol control chip; and the quick charging protocol control chip controls the first power supply circuit to output a first charging power supply to the first interface according to the first level.
3. The expansion device supporting PD output at a downstream port according to claim 2, further comprising a multiplexer connected between the first interface and the first hub, the multiplexer being further electrically connected to the fast charging protocol control chip;
the first interface is a USB-C interface, the quick-charging protocol control chip comprises a first detection pin and a second detection pin, the first detection pin and the second detection pin are used for detecting that the equipment to be charged is provided with a quick-charging protocol, the quick-charging protocol control chip judges that the first interface is forwardly connected to the equipment to be charged according to a quick-charging protocol signal fed back by the first detection pin, the quick-charging protocol control chip judges that the first interface is reversely connected to the equipment to be charged according to a quick-charging protocol signal fed back by the second detection pin, the quick-charging protocol control chip outputs a first switch signal to the multiplexer according to the quick-charging protocol signal fed back by the second detection pin, and the multiplexer reversely outputs a USB signal to the first interface according to the first switch signal.
4. The expansion device supporting output of a downstream port PD of claim 3, characterized in that the power interface is a USB-C interface.
5. The expansion device of claim 4, wherein the expansion device further comprises: a second interface is electrically connected to the first hub.
6. The expansion device of claim 5, wherein the expansion device further comprises: a second hub electrically connected to the first hub, and a number of third interfaces electrically connected to the second hub.
7. The expansion device of claim 6, wherein the expansion device further comprises: the current-limiting protection circuit and a second power supply circuit are electrically connected with the switching tube circuit; the second power supply circuit is used for supplying power to the first concentrator, the second concentrator, the protocol chip, the video converter, the video interface and the fast charging protocol control chip;
the input end of the current-limiting protection circuit is electrically connected with the second power supply circuit, and the output end of the current-limiting protection circuit is respectively connected with the second interface and the third interface.
8. The extension device supporting downlink port PD output according to claim 7, wherein said switch tube circuit includes a first switch tube and a second switch tube, and said first driving circuit includes a third switch tube; the drain electrode of the first switching tube is electrically connected with the uplink port, the source electrode of the first switching tube is respectively electrically connected with the grid electrode of the first switching tube, the source electrode of the second switching tube, the grid electrode of the second switching tube, the drain electrode of the third switching tube, the first power supply circuit and the second power supply circuit, the drain electrode of the second switching tube is electrically connected with the power supply interface, the source electrode of the third switching tube is grounded, and the grid electrode of the third switching tube is electrically connected with the protocol chip;
when the power interface is connected with a power supply, the protocol chip controls the third switching tube to be conducted, and enables the first switching tube to be conducted to output a second power supply input by the power interface to the uplink port after passing through the second switching tube.
9. The expansion device of claim 8, wherein the expansion device further comprises: the first detection circuit is respectively and electrically connected with the uplink port and the protocol chip, and the second detection circuit is respectively and electrically connected with the power interface and the protocol chip;
the protocol chip judges the charging power of the power supply according to the first detection circuit, and the protocol chip also judges the size of the second power supply input by the power supply interface through the second detection circuit.
10. The expansion device according to claim 9, wherein the first detection circuit includes a first resistor and a second resistor, the VBUS terminal of the uplink port is grounded via the first resistor and the second resistor in sequence, and an output terminal of the first resistor is electrically connected to the protocol chip;
the second detection circuit comprises a third resistor and a fourth resistor, a power supply input by the power supply interface is grounded through the third resistor and the fourth resistor in sequence, and the output end of the third resistor is electrically connected with the protocol chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211125418.6A CN115203108B (en) | 2022-09-16 | 2022-09-16 | Expansion device supporting downlink port PD output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211125418.6A CN115203108B (en) | 2022-09-16 | 2022-09-16 | Expansion device supporting downlink port PD output |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115203108A true CN115203108A (en) | 2022-10-18 |
| CN115203108B CN115203108B (en) | 2022-12-06 |
Family
ID=83572595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211125418.6A Active CN115203108B (en) | 2022-09-16 | 2022-09-16 | Expansion device supporting downlink port PD output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115203108B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115856573A (en) * | 2022-11-30 | 2023-03-28 | 珠海英集芯半导体有限公司 | PD protocol test system and method for chip mass production test |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608035A (en) * | 2015-12-25 | 2016-05-25 | 深圳罗马仕科技有限公司 | Type-C USB hub |
| CN106654742A (en) * | 2016-12-27 | 2017-05-10 | 歌尔科技有限公司 | USB hub supporting rapid charge |
| CN109617039A (en) * | 2018-11-15 | 2019-04-12 | 华为技术有限公司 | Power receiving equipment and Power over Ethernet system |
| CN109935221A (en) * | 2019-01-26 | 2019-06-25 | 深圳市松冠科技有限公司 | A kind of display Driver Card with double TYPE-C global function interfaces |
| CN212809197U (en) * | 2020-10-15 | 2021-03-26 | 深圳市拔超科技有限公司 | Multifunctional docking station supporting multi-USB-C switching |
| CN213124991U (en) * | 2020-10-20 | 2021-05-04 | 深圳市绿联科技有限公司 | A expander and docking station for Type-C interface adapter that charges |
| CN214754581U (en) * | 2021-04-25 | 2021-11-16 | 深圳市光逸科技创新有限公司 | Concentrator and data transmission system |
| CN216391231U (en) * | 2021-10-19 | 2022-04-26 | 深圳市海盈智联实业有限公司 | Docking station with double video interfaces |
-
2022
- 2022-09-16 CN CN202211125418.6A patent/CN115203108B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608035A (en) * | 2015-12-25 | 2016-05-25 | 深圳罗马仕科技有限公司 | Type-C USB hub |
| CN106654742A (en) * | 2016-12-27 | 2017-05-10 | 歌尔科技有限公司 | USB hub supporting rapid charge |
| CN109617039A (en) * | 2018-11-15 | 2019-04-12 | 华为技术有限公司 | Power receiving equipment and Power over Ethernet system |
| CN109935221A (en) * | 2019-01-26 | 2019-06-25 | 深圳市松冠科技有限公司 | A kind of display Driver Card with double TYPE-C global function interfaces |
| CN212809197U (en) * | 2020-10-15 | 2021-03-26 | 深圳市拔超科技有限公司 | Multifunctional docking station supporting multi-USB-C switching |
| CN213124991U (en) * | 2020-10-20 | 2021-05-04 | 深圳市绿联科技有限公司 | A expander and docking station for Type-C interface adapter that charges |
| CN214754581U (en) * | 2021-04-25 | 2021-11-16 | 深圳市光逸科技创新有限公司 | Concentrator and data transmission system |
| CN216391231U (en) * | 2021-10-19 | 2022-04-26 | 深圳市海盈智联实业有限公司 | Docking station with double video interfaces |
Non-Patent Citations (1)
| Title |
|---|
| 阮志芳: ""USB Type-C 技术分析与应用"", 《信息通信》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115856573A (en) * | 2022-11-30 | 2023-03-28 | 珠海英集芯半导体有限公司 | PD protocol test system and method for chip mass production test |
| CN115856573B (en) * | 2022-11-30 | 2023-10-03 | 珠海英集芯半导体有限公司 | PD protocol test system and method for chip mass production test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115203108B (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108718020B (en) | Concentrator | |
| CN105789991B (en) | Concentrator with combined power supply | |
| CN105281398B (en) | Portable equipment, CA cable assembly and USB system | |
| US9153999B2 (en) | Circuits and methods for automatic power source detection | |
| US10263444B2 (en) | Two way charging-discharging circuit structure | |
| JP2015535384A (en) | High voltage dedicated charging port | |
| US10574070B1 (en) | Multi-functional hub integrated with AC power supply | |
| CN115203108B (en) | Expansion device supporting downlink port PD output | |
| EP3490100A1 (en) | Charging system, terminal, power adapter and charging line | |
| CN211405512U (en) | Adapter | |
| CN210669562U (en) | Notebook computer switching structure that charges based on USBType-C | |
| TWI554889B (en) | Electric system | |
| CN109861038A (en) | It can automatically switch the USB Port and its control method of connection mode | |
| CN211017659U (en) | USB connects converting circuit and connects converter | |
| TWI806769B (en) | Power delivery device and control method of power supply path | |
| CN101359836B (en) | Self-switching charging circuit | |
| CN114815978B (en) | Docking station and method for improving compatibility of docking station equipment | |
| CN216873301U (en) | Interface circuit, intelligent glasses and control system | |
| CN114865403A (en) | Quick charging system, one-to-many quick charging data line, charging management device and method | |
| CN214314637U (en) | One-to-two quick-charging data line adopting TYPE-C interface input | |
| CN112086830B (en) | Data line circuit communicating with iOS device | |
| CN104065030B (en) | Overvoltage protection and method | |
| CN116401190A (en) | Expansion device supporting simultaneous charging of two uplink ports | |
| CN218497492U (en) | Desktop computer expansion interface circuit capable of supporting PD protocol quick charging | |
| CN212572109U (en) | Charging wire, charger and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |