CN214795908U

CN214795908U - High-integration double-port rechargeable USB hub

Info

Publication number: CN214795908U
Application number: CN202121130165.2U
Authority: CN
Inventors: 王黎敏; 华敏; 金鑫; 崔治学; 何伟
Original assignee: Keboda Technology Co ltd
Current assignee: Keboda Technology Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-11-19
Anticipated expiration: 2031-05-25

Abstract

The utility model provides a chargeable USB concentrator of two port of high integration, includes first temperature-detecting circuit, two Type-C interface charging chip, USB Hub chip, enabling circuit, first and second Type-C interface. The output end of the first temperature detection circuit is connected with the temperature acquisition input pin of the double Type-C interface charging chip. First and second current output pins of the double-Type-C interface charging chip are respectively connected with VBUS pins of first and second Type-C interfaces, a first CC1 connecting pin and a first CC2 connecting pin are respectively connected with CC1 and CC2 pins of the first Type-C interface, and a second CC1 connecting pin and a second CC2 connecting pin are respectively connected with CC1 and CC2 pins of the second Type-C interface. The utility model discloses circuit structure is simple, and is with low costs, and calorific capacity is little.

Description

High-integration double-port rechargeable USB hub

Technical Field

The utility model relates to a USB concentrator technique.

Background

The vehicle body electronic product USB HUB (USB HUB) has the functions of charging the mobile equipment of a client and communicating with a vehicle machine. The USB hub is generally installed under the central control or under the console box in the vehicle, both of which are enclosed and narrow spaces.

With the popularization of large screen car machines and the development of mobile internet, the demand for interconnection between mobile devices and car machines is growing vigorously, and a single vehicle-mounted USB charging port (USB DCP) cannot transmit data and is gradually eliminated. However, most vehicle-mounted USB data interfaces (USB SDP) of mass-produced vehicles only have a maximum current output capacity of about 1A, and are gradually careless for the increasingly large battery capacity of smart phones. In view of this, a charging downlink interface (USB CDP) having both a large-current charging capability (equal to or greater than 1.5A) and a data transmission capability will become a standard for future vehicle models.

Fig. 1 shows a schematic circuit diagram of a conventional dual port rechargeable USB HUB (USB HUB). The technical scheme shown in fig. 1 is described in three aspects of power supply, data and temperature control.

Power supply: the voltage VBAT (DC 12V) introduced from the power connector becomes the main power VIN for supplying power to the whole PCB after being processed by the input protection and filter circuit. The two paths of outputs are independent respectively, a 12V power supply is converted into VBUS with the voltage of about 5V through a DC-DC converter, then overcurrent protection and line loss compensation of the port are executed through respective charging port controllers, and the outputs of the charging port controllers are connected with a Type-C protocol controller and used for achieving functions of port output, broadcast output current capability and the like. The 3.3V power supply rail required by the data and temperature control part is generated by one LDO from one 5V power supply rail.

Data: in the prior art, a USB Hub chip is used, and a vehicle machine is connected to an uplink port, and two ports are connected to two downlink ports, so that USB2.0 bidirectional data communication between the vehicle machine and a mobile device can be realized.

Temperature control: the MCU judges the current temperature of the product by collecting the voltage of the external NTC voltage division network, and derates or shuts down the product according to an agreed strategy to prevent the shell temperature from exceeding a limit value. Derating is realized by controlling an external CC configuration resistor of the Type-C protocol controller, and turning off is realized by disabling the charging port controller through an enabling circuit.

The above technical solution mainly has the following three defects:

1. the number of chips and peripheral devices is large. The VBUS output of each port needs one DC-DC chip, a charging port control chip and a Type-C protocol controller chip, so that the number of chips and related peripheral devices is large, and the cost is high;

2. the VBUS line total impedance is high. Because each path of output is composed of 1 DC-DC chip and one charging port controller chip, the output belongs to series connection from the current perspective, and the total line impedance is the sum of the on-resistance Rdson of the two chips and the impedance of PCB wiring. When 3A large current charging is carried out, the devices generate heat seriously, so that the overall thermal performance of the product is poor;

3. the de-rating mechanism is complex to implement. In the above scheme, the derating broadcast function of the output Current is completed by the Type-C protocol controller, but the Type-C protocol controller does not have the temperature sensing function, so that the MCU and the NTC resistor are required to be externally connected, the temperature information is obtained by calculating after the voltage on the NTC resistor is sampled by the analog-to-digital converter ADC of the MCU, and then the level of a Current Mode (Current Mode) pin of the Type-C protocol controller is changed by GPIO (general purpose input/output), the whole process is complex, the devices are various, the reliability is low, and the cost is high.

Disclosure of Invention

The utility model aims to solve the technical problem that a chargeable USB concentrator of two port of high integration degree is provided, its circuit structure is simple, and is with low costs, and calorific capacity is little.

The utility model provides a chargeable USB concentrator of two port of high integration, including first temperature-detecting circuit, two Type-C interface charging chip, USB Hub chip, enabling circuit, first Type-C interface and second Type-C interface; the output end of the first temperature detection circuit is connected with a temperature acquisition input pin of the double Type-C interface charging chip, and the first temperature detection circuit is used for detecting the ambient temperature of the double Type-C interface charging chip; a first current output pin and a second current output pin of the double-Type-C interface charging chip are respectively connected with VBUS pins of the first Type-C interface and the second Type-C interface; a first CC1 connecting pin and a first CC2 connecting pin of the double-Type-C interface charging chip are respectively connected with a CC1 pin and a CC2 pin of a first Type-C interface, and a second CC1 connecting pin and a second CC2 connecting pin of the double-Type-C interface charging chip are respectively connected with a CC1 pin and a CC2 pin of a second Type-C interface; a first downlink data transmission pin and a second downlink data transmission pin of the USB Hub chip are respectively connected with data transmission pins of a first Type-C interface and a second Type-C interface; the first enabling control pin and the second enabling control pin of the USB Hub chip are respectively connected with a first input end and a second input end of an enabling circuit, a first output end and a second output end of the enabling circuit are respectively connected with a first current output enabling pin and a second current output enabling pin of the double-Type-C interface charging chip, the enabling circuit is used for outputting a first enabling signal to the first current output enabling pin of the double-Type-C interface charging chip when receiving a first enabling control signal output from the first enabling control pin of the USB Hub chip, and outputting a second enabling signal to the second current output enabling pin of the double-Type-C interface charging chip when receiving a second enabling control signal output from the second enabling control pin of the USB Hub chip.

The utility model discloses a chargeable USB concentrator of two mouthfuls adopts 1 two types-C interface charging chip to replace traditional 2 DC-DC converter chips, 2 charging port controller chips and 2 types-C protocol controller chips, and the chip that replaces counts 6 altogether, has following advantage at least:

1. the types and the number of chips and accessory peripheral devices are greatly reduced, the BOM (bill of material) cost is reduced, and the layout flexibility is increased;

2. because the number of chips is reduced, the total on-resistance on a power supply path is reduced, the heat generation during large current output is reduced, and the high-temperature performance of the product is obviously improved;

3. the double-Type-C interface charging chip of the embodiment can directly collect temperature information, does not need an external MCU to obtain the temperature information, simplifies the derating realization mechanism and improves the reliability of products.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 shows a schematic circuit diagram of a conventional dual port rechargeable USB hub.

Fig. 2 is a schematic circuit diagram of a dual port rechargeable USB hub according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Fig. 2 is a schematic circuit diagram of a dual port rechargeable USB hub according to an embodiment of the present invention. Referring to fig. 2, a dual-port rechargeable USB Hub with high integration according to an embodiment of the present invention includes a dual Type-C interface charging chip 1, a USB Hub chip 2, an enabling circuit 3, a hysteresis comparator 4, a power connector 5, an input protection and filtering circuit 6, a signal connector 7, a first temperature detection circuit 81, a second temperature detection circuit 82, a first Type-C interface 91, and a second Type-C interface 92.

In this embodiment, the model of the dual Type-C interface charging chip 1 is SN2008003, a DC-DC converter is built in the chip, a maximum output of 6.6A is supported (that is, a maximum output of 3.3A per port), and 5V 200mA may be additionally provided to drive a peripheral logic circuit. The chip integrates cable compensation, overcurrent protection and Type-C protocol processing functions of two ports. Meanwhile, the chip is provided with a temperature acquisition input pin TS, and intelligent derating can be realized through an external temperature detection circuit.

The input end of the power connector 5 is used for connecting a power supply, the output end of the power connector 5 is connected with the input end of the input protection and filter circuit 6, and the output end of the input protection and filter circuit 6 is connected with a power supply input pin IN of the double-Type-C interface charging chip 1. The 12V voltage VBAT output from the power connector 5 is connected to the IN pin of the SN2008003 chip after protection and filtering, the DC-DC converter built IN the chip converts the 12V voltage into a specified voltage (the voltage may change due to the cable compensation function, and is about 5.17V), the specific method is to modulate the 12V voltage VBAT into a 12V PWM pulse voltage VSW with a corresponding pulse width through a synchronous step-down circuit inside the chip, the PWM pulse voltage VSW is output from the PWM signal output pin SW pin, the PWM signal output pin SW is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to the rectification input pin Sense of the double Type-C interface charging chip 1. The PWM pulse voltage VSW passes through an external inductor and a capacitor rectifier filter (a filter capacitor is not shown in the figure) to form a dc level VSENSE of about 5.17V, which becomes a main power rail for the chip output.

The output end of the first temperature detection circuit 81 is connected with a temperature acquisition input pin TS of the double Type-C interface charging chip 1, the first temperature detection circuit 81 is used for detecting the ambient temperature of the double Type-C interface charging chip and comprises an NTC thermistor Rt1 and a divider resistor R9, one end of the NTC thermistor Rt1 is connected with a rectification input pin Sense of the double Type-C interface charging chip, and the other end of the NTC thermistor Rt1 is connected with the divider resistor R9 in series and then grounded; the common contact of the NTC thermistor Rt1 and the divider resistor R9 is connected with the temperature acquisition input pin TS of the double Type-C interface charging chip 1.

A first current output pin PA _ OUT and a second current output pin PB _ OUT of the double-Type-C interface charging chip 1 are respectively connected with VBUS pins of a first Type-C interface 91 and a second Type-C interface 92; a first CC1 connection pin PA _ CC1 and a first CC2 connection pin PA _ CC2 of the double-Type-C interface charging chip 1 are respectively connected with a CC1 pin and a CC2 pin of a first Type-C interface, and a second CC1 connection pin PB _ CC1 and a second CC2 connection pin PB _ CC2 of the double-Type-C interface charging chip 1 are respectively connected with a CC1 pin and a CC2 pin of a second Type-C interface 92.

The first downlink data transmission pin and the second downlink data transmission pin of the USB Hub chip 2 are respectively connected to the data transmission pins of the first Type-C interface 91 and the second Type-C interface 92, and the connection mode is consistent with the connection mode in the prior art, so no pin symbol is marked in the figure. The first downlink data transmission pin and the second downlink data transmission pin are both differential data transmission pins, each differential data transmission pin is composed of a positive data transmission pin and a negative data transmission pin, the positive data transmission pin and the negative data transmission pin of the first downlink data transmission pin are respectively connected with the D + and the D-pins of the first Type-C interface 91, and the positive data transmission pin and the negative data transmission pin of the second downlink data transmission pin are respectively connected with the D + and the D-pins of the second Type-C interface 92.

The first enabling control pin PTR _ CTL1 and the second control pin PTR _ CTL2 of the USB Hub chip 2 are respectively connected to the first input terminal and the second input terminal of the enabling circuit 3, the first output terminal and the second output terminal of the enabling circuit 3 are respectively connected to the first current output enabling pin PA _ EN and the second current output enabling pin PB _ EN of the dual Type-C interface charging chip 1, the enabling circuit 3 is configured to, upon receiving the first enabling control signal output from the first enabling control pin PTR _ CTL1 of the USB Hub chip 2, a first enable signal is output to a first current output enable pin PA _ EN of the dual Type-C interface charging chip 1, upon receiving the second enable control signal output from the second enable control pin PTR _ CTL2 of the USB Hub chip 2, and outputting a second enable signal to a second current output enable pin PB _ EN of the double Type-C interface charging chip 1. When the double-Type-C interface charging chip 1 receives a first enabling signal, the first current output pin PA _ OUT is allowed to output current to the first Type-C interface 91 so as to realize charging through the first Type-C interface, and when the double-Type-C interface charging chip 1 receives a second enabling signal, the second current output pin PB _ OUT is allowed to output current to the second Type-C interface 92 so as to realize charging through the second Type-C interface.

In this embodiment, the charging protocol is cooperatively completed by the SN2008003 chip and the USB Hub chip, and can support the common Type-C rev 1.3, BC1.2, YD/T1591-. For Type-C rev 1.3, the CC Monitor (CC Monitor) inside the SN2008003 chip monitors the CC signal line voltage state of the corresponding port through PA _ CCx and PB _ CCx (note: x represents 1 or 2) pins, and is implemented by combining with internal control logic. For the BC1.2 charging protocol, the voltage of the corresponding downlink data transmission pin is controlled by a DCP module in the USB HUB chip.

In this embodiment, the thermal derating function (that is, the output current of two ports is decreased from 3A to 1.5A at the same time) is implemented by the temperature comparator circuit inside the SN2008003 chip and the first external temperature detection circuit. The NTC thermistor Rt1 is pulled up to a voltage VSENSE, and is grounded through a divider resistor R9, a voltage division VTS between the NTC thermistor Rt and the voltage division VTS is connected with a temperature acquisition input pin TS of the SN2008003 chip, and an internal comparator of the chip compares the proportional relation between the VTS and the VSENSE. The voltage dividing resistor R9 with proper size is selected to enable the VTS to be far smaller than VSENSE at low temperature, along with temperature rise, the resistance value of the NTC thermistor Rt1 is reduced, the VTS is gradually increased, and when the VTS =1/2 VSENSE, the internal comparator of the SN2008003 chip outputs derating signals to the CC monitor, and the CC monitor controls the levels of two corresponding CC pins to broadcast 1.5A current capacity. The internal comparator of the SN2008003 chip has a return difference function, when the temperature is reduced, the resistance value of the NTC thermistor Rt1 is gradually increased, the VTS is gradually reduced, when the VTS is reduced to 0.4 times of VSENSE, the internal comparator of the SN2008003 chip outputs a recovery signal to the CC monitor, the CC monitor controls the levels of two corresponding CC pins, and 3A current capacity is broadcasted to the outside.

In the present embodiment, the active thermal shutdown function (when the case temperature of the dual-port rechargeable USB hub reaches a specified value, the output of the two Type-C interfaces is turned off) is jointly performed by the hysteresis comparator 4, the second temperature detection circuit 82 and the enable circuit 3, which are formed by operational amplifiers. The second temperature detection circuit 82 is used to detect the temperature of the housing of the dual port rechargeable USB hub. The first input end of the hysteresis comparator 4 is connected with the output end of the second temperature detection circuit 82, the second input end of the hysteresis comparator 4 is connected with the reference voltage VREF, the output end of the hysteresis comparator 4 is connected with the third input end of the enabling circuit 3, and the hysteresis comparator 4 is used for outputting a disabling trigger signal when the voltage which is output by the second temperature detection circuit 82 and represents the temperature exceeds the preset threshold voltage which represents the temperature threshold value. The enabling circuit 3 is configured to output a disabling signal to the first current output enabling pin PA _ EN and the second current output enabling pin PB _ EN of the dual Type-C interface charging chip 1 when receiving the disabling trigger signal output by the hysteresis comparator 4, so as to turn off the current output of the dual Type-C interface charging chip 1.

Further, the dual port rechargeable USB hub of the present embodiment includes an LDO regulator 10a and a voltage divider circuit 10 b. The input end of the LDO regulator 10 is connected with the auxiliary load output pin OUT of the dual Type-C interface charging chip 1, and the output end of the LDO regulator 10 is connected with the input end of the voltage dividing circuit, the power input end of the hysteresis comparator 4 and the power input end of the USB HUB chip 2, respectively, so as to convert the output voltage (5V voltage in this embodiment) from the dual Type-C interface charging chip 1 into the working voltage (3.3V voltage in this embodiment) of the voltage dividing circuit, the hysteresis comparator 4 and the USB HUB chip 2; an output terminal of the voltage divider circuit 10b is connected to a second input terminal of the hysteresis comparator 4 to output a reference voltage VREF to the hysteresis comparator 4.

The second temperature detecting circuit 82 is composed of an NTC thermistor Rt2 and a voltage dividing resistor R10 connected in series with each other. The NTC thermistor Rt2 is arranged at the position of the edge of the PCB far away from the heat source (the position is the conventional means in the industry), has the similar thermal characteristics with the temperature of the shell, and can establish the good corresponding relation between the temperature of the PCB and the temperature of the shell. The reference voltage VREF is obtained by dividing voltage through resistors, and the value of the reference voltage VREF is obtained by testing and calculating in advance according to the corresponding relation between the temperature of the PCB and the temperature of the shell. The specific method is that a point thermometer measuring point is arranged on the shell and used for measuring the temperature of the shell, a voltage measuring point is arranged on an output node of the second temperature detection circuit, and the voltage of the point is measured continuously. And carrying out a full-temperature end operation test on the product in a working range required by a customer to obtain a characteristic curve of the voltage VSD relative to the ambient temperature Ta. And searching the characteristic curve according to the required shutdown temperature value Tsd provided by the customer requirement file to obtain a voltage VSD value corresponding to Tsd, and taking the voltage value as a VREF value. Thus, when the case temperature rises to Tsd, the value of VSD can reach the value of VREF, causing the hysteretic comparator output to change.

During operation, as the temperature of the shell rises, the resistance value of the NTC thermistor Rt2 decreases, the voltage VSD gradually increases, and when the VSD is greater than the upper limit voltage threshold, the hysteresis comparator 4 outputs a low-level disabling trigger signal Thermal _ EN to the enable circuit 3, and the enable circuit 3 performs a logical and operation, so that the output is also low, and the first current output enable pin PA _ EN and the second current output enable pin PB _ EN of the SN2008003 chip become low level, so that the SN2008003 chip stops outputting, and the Thermal shutdown function is realized.

In the present embodiment, the enabling circuit 3 is formed by an and logic circuit, and optionally, the enabling circuit 3 adopts a chip with a model number BAW56, 215.

The embodiment of the utility model provides an use hysteresis comparator circuit to replace MCU among the prior art to realize the hot turn-off function, not only reduced software work load (including development, debugging, version maintenance etc.), still reduced the BOM cost of product.

In other embodiments, the dual Type-C interface charging chip 1 is a dual Type-C interface charging chip manufactured by Monolithic Power Systems, Inc. and having model number MPQ4488 b.

The utility model discloses a chargeable USB concentrator of two port adopts 1 two types-C interface chip that charges to replace traditional 2 DC-DC converter chips, 2 port controller chips and 2 types-C protocol controller chips of charging, reduced the kind and the quantity of chip and attached peripheral device by a wide margin, the BOM cost has been reduced, because chip quantity reduces, total on-resistance on the power route has been reduced, generate heat when having reduced heavy current output, the high temperature performance of product can show the promotion. The utility model discloses a chargeable USB concentrator of two port is particularly suitable for using as the chargeable USB concentrator of on-vehicle two port.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A high-integration-level double-port rechargeable USB Hub is characterized by comprising a first temperature detection circuit, a double Type-C interface charging chip, a USB Hub chip, an enabling circuit, a first Type-C interface and a second Type-C interface;

the output end of the first temperature detection circuit is connected with the temperature acquisition input pin of the double Type-C interface charging chip, and the first temperature detection circuit is used for detecting the ambient temperature of the double Type-C interface charging chip;

a first current output pin and a second current output pin of the double-Type-C interface charging chip are respectively connected with VBUS pins of a first Type-C interface and a second Type-C interface; a first CC1 connecting pin and a first CC2 connecting pin of the double-Type-C interface charging chip are respectively connected with a CC1 pin and a CC2 pin of a first Type-C interface, and a second CC1 connecting pin and a second CC2 connecting pin of the double-Type-C interface charging chip are respectively connected with a CC1 pin and a CC2 pin of a second Type-C interface;

a first downlink data transmission pin and a second downlink data transmission pin of the USB Hub chip are respectively connected with data transmission pins of a first Type-C interface and a second Type-C interface; the first enabling control pin and the second enabling control pin of the USB Hub chip are respectively connected with a first input end and a second input end of the enabling circuit, a first output end and a second output end of the enabling circuit are respectively connected with a first current output enabling pin and a second current output enabling pin of the double-Type-C interface charging chip, the enabling circuit is used for outputting a first enabling signal to the first current output enabling pin of the double-Type-C interface charging chip when receiving a first enabling control signal output from the first enabling control pin of the USB Hub chip, and outputting a second enabling signal to the second current output enabling pin of the double-Type-C interface charging chip when receiving a second enabling control signal output from the second enabling control pin of the USB Hub chip.

2. The high-integration dual-port rechargeable USB hub according to claim 1, wherein the dual-port rechargeable USB hub comprises a second temperature detection circuit and a hysteresis comparator;

the second temperature detection circuit is used for detecting the temperature of the shell of the dual-port rechargeable USB hub;

a first input end of the hysteresis comparator is connected with an output end of the second temperature detection circuit, a second input end of the hysteresis comparator is connected with a reference voltage VREF, an output end of the hysteresis comparator is connected with a third input end of the enabling circuit, and the hysteresis comparator is used for outputting a disabling trigger signal when the voltage which is output by the second temperature detection circuit and represents the temperature exceeds a preset threshold voltage which represents the temperature threshold;

the enabling circuit is used for outputting a disabling signal to a first current output enabling pin and a second current output enabling pin of the double Type-C interface charging chip when the disabling triggering signal output by the hysteresis comparator is received so as to switch off the current output of the double Type-C interface charging chip.

3. The dual port rechargeable USB hub of claim 2, wherein the dual port rechargeable USB hub comprises an LDO regulator and a voltage divider circuit;

the input end of the LDO voltage stabilizer is connected with an auxiliary load output pin of the double-Type-C interface charging chip, and the output end of the LDO voltage stabilizer is respectively connected with the input end of the voltage division circuit, the power input end of the hysteresis comparator and the power input end of the USB HUB chip so as to convert the output voltage from the double-Type-C interface charging chip into the working voltage of the voltage division circuit, the hysteresis comparator and the USB HUB chip;

and the output end of the voltage division circuit is connected with the second input end of the hysteresis comparator so as to output a reference voltage VREF to the hysteresis comparator.

4. The high-integration dual-port rechargeable USB hub according to claim 1, wherein a PWM signal output pin of the dual Type-C interface charging chip is connected to one end of an inductor, and the other end of the inductor is connected to a rectifying input pin of the dual Type-C interface charging chip.

5. The high-integration dual-port rechargeable USB hub according to claim 4, wherein the first temperature detection circuit comprises an NTC thermistor Rt1 and a voltage dividing resistor R9, one end of the NTC thermistor Rt1 is connected to the rectifying input pin of the dual Type-C interface charging chip, and the other end of the NTC thermistor Rt1 is connected in series with the voltage dividing resistor R9 and then grounded; and a common joint of the NTC thermistor Rt1 and the divider resistor R9 is connected with the temperature acquisition input pin of the double Type-C interface charging chip.

6. The dual port rechargeable USB Hub of claim 1, wherein said dual port rechargeable USB Hub comprises a signal connector connected to an upstream data transfer pin of said USB Hub chip.

7. The dual-port rechargeable USB hub according to claim 1, wherein the dual-port rechargeable USB hub comprises an input protection and filter circuit, an input terminal of the input protection and filter circuit is used for connecting a power supply, and an output terminal of the input protection and filter circuit is connected to the power supply input pin of the dual Type-C interface charging chip.

8. The dual port rechargeable USB hub of claim 7, wherein the dual port rechargeable USB hub comprises a power connector having an input end for connecting to a power source and an output end connected to the input end of the input protection and filtering circuit.

9. The high-integration dual-port rechargeable USB hub according to any one of claims 1 to 8, wherein the dual Type-C interface rechargeable chip is SN 2008003.

10. The high-integration dual-port rechargeable USB hub according to any one of claims 1 to 8, wherein the dual Type-C interface charging chip is a dual Type-C interface charging chip of MPQ4488b manufactured by chip Source systems, Inc.