High-power in-vehicle USB data and video DP data charging module

Abstract

This invention provides a high-power in-vehicle USB data and video DP data charging module. The control circuit receives the vehicle's DC input power at its input terminal Vin and performs a DC-DC conversion to provide it to a first downstream USB interface and / or a second downstream USB interface. The video data converter converts video data from the HMTD interface to obtain video DP data and provides it to a first multiplexer and / or a second multiplexer. The hub controller provides USB data from the upstream USB interface to the first multiplexer and / or the second multiplexer. The first multiplexer switches between USB data and video DP data to the first downstream USB interface. The second multiplexer switches between USB data and video DP data to the second downstream USB interface based on the control of the control circuit. Compared with existing technologies, this invention not only solves the problem of high-power charging for computers and tablets but also satisfies the customer's in-cabin entertainment experience.

Description

[Technical Field]

[0001] This invention relates to the field of vehicle charging and data communication technology, and in particular to a vehicle-mounted high-power USB data and video DP data charging module. [Background Technology]

[0002] As people's living standards continue to improve, the use of electronic products such as mobile phones, tablets, and laptops is becoming increasingly widespread. However, this brings with it the challenge of solving the problem of fast charging, especially when traveling by car. It's not just about keeping passengers entertained in the car, but also about charging their devices. Furthermore, current high-power USB charging modules suffer from insufficient chip integration, limited peripheral resources, and high costs.

[0003] Therefore, it is necessary to propose an improved technical solution to address the above problems. [Summary of the Invention]

[0004] One of the objectives of this invention is to provide an in-vehicle high-power USB data and video DP data charging module, which uses a CCG7D chip to control PD & DP, achieving 87W high-power charging while also meeting the requirements of high-definition video transmission. This not only solves the problem of high-power charging needs for computers and tablets, but also satisfies the customer's entertainment experience in the cabin.

[0005] According to one aspect of the present invention, an in-vehicle high-power USB data and video DP data charging module is provided, comprising a control circuit, an HMTD interface, a video data converter, a hub controller, a first multiplexer, a second multiplexer, an uplink USB interface, a first downlink USB interface, and a second downlink USB interface. The control circuit performs DC-DC conversion on the in-vehicle DC input power VBAT received at its input terminal Vin to obtain a first DC power supply 0-VBUS provided to the first downlink USB interface and / or a second DC power supply 1-VBUS provided to the second downlink USB interface. The video data converter, based on the control of the control circuit, converts the video data from the HMTD interface to obtain video DP data, and then... The data is provided to the first multiplexer and / or the second multiplexer; the hub controller, based on the control of the control circuit, provides USB data from the uplink USB interface to the first multiplexer and / or the second multiplexer, and provides USB data from the first multiplexer and / or the second multiplexer to the uplink USB interface; the first multiplexer, based on the control of the control circuit, switches the USB data provided by the hub controller or the video DP data provided by the video data converter to the first downlink USB interface; the second multiplexer, based on the control of the control circuit, switches the USB data provided by the hub controller or the video DP data provided by the video data converter to the second downlink USB interface.

[0006] Compared with existing technologies, this invention uses a CCG7D chip to control PD & DP, achieving 87W high-power charging while also meeting the requirements of high-definition video transmission. This not only solves the problem of high-power charging needs for computers and tablets, but also satisfies the customer's entertainment experience in the cabin. [Attached Image Description]

[0007] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0008] Figure 1 This is a circuit diagram of an in-vehicle high-power USB data and video DP data charging module in one embodiment of the present invention.

[0009] Figure 2 For example, in one embodiment of the present invention Figure 1 The circuit diagram shown is of the input protection and filtering circuit.

[0010] Figure 3 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the input interface circuit shown is shown.

[0011] Figure 4 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the first downstream USB interface is shown below;

[0012] Figure 5 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the second downstream USB interface is shown below;

[0013] Figure 6 For example, in one embodiment of the present invention Figure 1 The schematic diagram of the HMTD interface is shown below;

[0014] Figure 7 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the USX2730 chip is shown below;

[0015] Figure 8 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the upstream USB interface is shown below;

[0016] Figure 9 This is a circuit diagram of the thermal protection circuit in one embodiment of the present invention;

[0017] Figure 10 For example, in one embodiment of the present invention Figure 1 The schematic diagram of the MCU section integrated inside the CCG7D chip is shown.

[0018] Figure 11 For example, in one embodiment of the present invention Figure 1 The schematic diagram shown is of the PD controller, buck-boost, and peripheral circuitry integrated within the CCG7D chip.

[0019] Figure 12 In another embodiment of the present invention, as shown Figure 1 The schematic diagram shown is of the PD controller, buck-boost, and peripheral circuitry integrated within the CCG7D chip.

[0020] Figure 13 For example, in one embodiment of the present invention Figure 1 The schematic diagram of the hub controller is shown below;

[0021] Figure 14 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the first multiplexer shown is shown below;

[0022] Figure 15 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the second multiplexer shown is shown below;

[0023] Figure 16 For example, in one embodiment of the present invention Figure 1 The schematic diagram of the video data converter is shown below;

[0024] Figure 17 As in the first embodiment of the present invention Figure 1 The circuit diagram of the power rail circuit shown is shown.

[0025] Figure 18 As in the second embodiment of the present invention Figure 1 The circuit diagram of the power rail circuit shown is shown.

[0026] Figure 19 As in the third embodiment of the present invention Figure 1 The circuit diagram of the power rail circuit shown is shown.

[0027] Figure 20 For example, in one embodiment of the present invention Figure 1 The circuit diagram of the SD card is shown.

Detailed Implementation Methods

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Unless otherwise specified, the terms coupling, connection, linking, and interconnection used herein to indicate electrical connection mean direct or indirect connection. For example, A being connected to B includes both a direct electrical connection between A and B and a connection between A and B via electrical components or circuits.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Please refer to Figure 1 As shown, it is a circuit diagram of an in-vehicle high-power USB data and video DP data charging module in one embodiment of the present invention. Figure 1 The vehicle-mounted high-power USB data and video DP data charging module shown includes a control circuit 110, an HMTD interface 120, a video data converter 130, a hub controller 140, a first multiplexer 150, a second multiplexer 160, an upstream USB interface 170, a first downstream USB interface 180, and a second downstream USB interface 190.

[0032] The control circuit 110 performs DC-DC conversion on the vehicle DC input power VBAT received at its input terminal Vin to obtain a first DC power supply 0-VBUS for the first downstream USB interface 180 and / or a second DC power supply 1-VBUS for the second downstream USB interface 190. The video data converter 130, based on the control of the control circuit 110, converts the video data from the HMTD interface 120 to obtain video DP data and provides it to the first multiplexer 150 and / or the second multiplexer 160. HMTD stands for High Speed-Modular Twisted-pair Data, introduced by Rosenberger in 2017. This connector is primarily designed for vehicle differential signal link transmission and is a 360° fully shielded system. DP stands for DisplayPort, a high-definition digital display interface standard that can connect computers and monitors, as well as computers and home theater systems. Hub controller 140, under the control of control circuit 110, provides USB data from upstream USB interface 170 to first multiplexer 150 and / or second multiplexer 160, and provides USB data from first multiplexer 150 and / or second multiplexer 160 to upstream USB interface 170. First multiplexer 150, under the control of control circuit 110, switches USB data provided by hub controller 140 or video DP data provided by video data converter 130 to first downstream USB interface 180. Second multiplexer 160, under the control of control circuit 110, switches USB data provided by hub controller 140 or video DP data provided by video data converter 130 to second downstream USB interface 190.

[0033] exist Figure 1 In the illustrated embodiment, the control circuit 110 includes a CCG7D chip. Please refer to [reference needed]. Figure 10 As shown, this is one embodiment of the present invention. Figure 1The schematic diagram shown is of the MCU (Microcontroller Unit) integrated within the CCG7D chip; please refer to it. Figure 11 As shown, this is one embodiment of the present invention. Figure 1 The schematic diagram shown is of the PD controller and buck-boost circuit integrated within the CCG7D chip, along with its peripheral circuitry; please refer to it. Figure 12 As shown, this is another embodiment of the present invention. Figure 1 The diagram shows the schematic of the PD controller, buck-boost, and peripheral circuitry integrated within the CCG7D chip. The CCG7D chip integrates an MCU and two PD protocol control circuits. By requesting the CC signal, it determines whether the peripheral device supports the PD protocol and the required charging power. The PD protocol controller then outputs the corresponding power. PD stands for USB Power Delivery Specification, which is a fast charging technology standard introduced by the USB standardization organization.

[0034] based on Figure 1 , Figure 10 , Figure 11 and Figure 12 It is understood that the control circuit 110 (or CCG7D chip) performs DC-DC conversion on the vehicle DC input power VBAT received at its input terminal Vin based on the PD charging protocol to obtain a first DC power supply 0-VBUS provided to the first downstream USB interface 180 and / or a second DC power supply 1-VBUS provided to the second downstream USB interface 190. In one embodiment, when only the first downstream USB interface 180 is connected to a device to be charged, the control circuit 110 (or CCG7D chip) controls the first downstream USB interface 180 to provide a maximum charging power of 60W; when only the second downstream USB interface 190 is connected to a device to be charged, the control circuit 110 (or CCG7D chip) controls the second downstream USB interface 190 to provide a maximum charging power of 27W; when both the first downstream USB interface 180 and the second downstream USB interface 190 are connected to devices to be charged, the control circuit 110 (or CCG7D chip) controls the first downstream USB interface 180 to provide a maximum charging power of 60W, and simultaneously controls the second downstream USB interface 190 to provide a maximum charging power of 27W. In other words, Figure 1 The in-vehicle high-power USB data and video DP data charging module shown can achieve a maximum charging power of 60W per port, and a total charging power of 87W when both ports are output simultaneously, thus greatly shortening the charging time.

[0035] The CCG7D chip communicates with the video data converter 130, hub controller 140, first multiplexer 150, and second multiplexer 160. Figure 1 In the specific embodiment shown, the CCG7D chip is communicatively connected to the video data converter 130, the hub controller 140, the first multiplexer 150, and the second multiplexer 160 via the I2C bus.

[0036] The uplink pins RIN0+ / RIN0- and RIN1+ / RIN1- of the video data converter 130 are connected to the HMTD interface 120. Its downlink pin 0_HPD is connected to the corresponding pin of the control circuit 110 (or CCG7D chip) and the corresponding uplink pin of the first multiplexer 150. Its downlink pin 0_AUX+ / AUX- is connected to the corresponding uplink pin of the first multiplexer 150. Its downlink pin 0_DP 4Lane is connected to the corresponding uplink pin of the first multiplexer 150. Its downlink pin 1_HPD is connected to the corresponding pin of the control circuit 110 (or CCG7D chip) and the corresponding uplink pin of the second multiplexer 160. Its downlink pin 1_AUX+ / AUX- is connected to the corresponding uplink pin of the second multiplexer 160. Its downlink pin 1_DP 4Lane is connected to the corresponding uplink pin of the second multiplexer 160. Figure 1 In the specific embodiment shown, the video data converter 130 uses the DS90UH984WRURTQ1 chip. Please refer to [the documentation / reference] for details. Figure 16 As shown, this is one embodiment of the present invention. Figure 1 The schematic diagram of the video data converter shown is as follows. Figure 16 The video data converter shown includes the DS90UH984WRURTQ1 chip and its peripheral circuitry. The DS90UH984WRURTQ1 chip integrates dual-channel DP and one FPD-LINK (Flat Panel DisplayLink, i.e., video serial communication) channel. The FPD-LINK channel can transmit not only video signals but also I2C and clock signals. The DS90UH984WRURTQ1 chip is connected to the HMTD interface 120 via FPD-LINK. Please refer to [reference needed]. Figure 6 As shown, this is one embodiment of the present invention. Figure 1 The schematic diagram of the HMTD interface is shown.

[0037] exist Figure 1In the illustrated implementation, the first downstream USB interface 180 is a USB 3.1 Type-C interface. Pin 0_CC of the first downstream USB interface 180 is connected to the corresponding pin of the CCG7D chip; pins 0_D+ / D- are connected to the corresponding downstream pins of the hub controller 140; pin 0_VBUS is connected to the corresponding pin of the control circuit 110; pins 0_SUB1 / 2 are connected to the corresponding downstream pins of the first multiplexer 150; and pins 0_TX / 0_RX are connected to the corresponding downstream pins of the first multiplexer 150. Please refer to [reference needed] for details. Figure 4 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the first downstream USB interface shown is as follows. Figure 4 The first downstream USB interface shown is a USB 3.1 Type-C interface.

[0038] exist Figure 1 In the illustrated implementation, the second downstream USB interface 190 is a USB 3.1 Type-C interface. Pin 1_CC of the second downstream USB interface 190 is connected to the corresponding pin of the CCG7D chip; pin 1_D+ / D- is connected to the corresponding downstream pin of the hub controller 140; pin 1_VBUS is connected to the corresponding pin of the control circuit 110; pin 1_SUB1 / 2 is connected to the corresponding downstream pin of the second multiplexer 160; and pins 1_TX / 0_RX are connected to the corresponding downstream pin of the second multiplexer 160. Please refer to [reference needed] for details. Figure 5 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the second downstream USB interface is shown below. Figure 5 The second downstream USB port shown is a USB 3.1 Type-C port.

[0039] exist Figure 1 In the specific implementation shown, the uplink USB interface 170 is a USB 3.1 Type-C interface. The VBUS_UP pin of the uplink USB interface 170 is connected to the corresponding uplink pin of the hub controller 140, its D+ / D- pins are connected to the corresponding uplink pins of the hub controller 140, its CC1 pin is connected to the corresponding uplink pin of the hub controller 140, and its TX / RX pins are connected to the corresponding uplink pins of the hub controller 140. Please refer to [reference needed] for details. Figure 8 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the upstream USB interface shown is as follows. Figure 8The upstream USB interface shown is a USB 3.1 Type-C interface. Correspondingly, the downstream pin 0_TX / RX of the Hub controller 140 is connected to the upstream pin of the first multiplexer 150, and its downstream pin 1_TX / RX is connected to the upstream pin of the second multiplexer 160. Its downstream pin 0_CC1_P is grounded through a resistor.

[0040] Figure 1 The in-vehicle high-power USB data and video DP data charging module shown also includes an SD card control circuit 200. SD stands for Secure Digital Memory Card / SD card, which is a new generation of memory device based on semiconductor flash memory. The downlink port of the SD card control circuit 200 is connected to the SD card 210, and its uplink port is connected to the hub controller 140. The SD card 210 can sequentially interact with the vehicle's infotainment system through the SD card control circuit 200, the hub controller 140, and the uplink USB interface 170. Figure 1 In the specific embodiment shown, the SD card control circuit 200 uses a USX2730 chip (which belongs to automotive SD card control chips). Its downlink port can be designed with SD card PIN-to-PIN, and its uplink port is a USB 2.0 interface, which can be directly connected to the hub controller 140 for data interaction with the vehicle's infotainment system. Specifically, the downlink port of the SD card control circuit 200 includes pins DATA, CLK, VDD, CMD, and CD; the D+ / D- pins of the uplink port of the SD card control circuit 200 are connected to the corresponding downlink pins of the hub controller 140. Figure 1 In the embodiment shown, the SD card control circuit 200 uses a USX2730 chip. Please refer to [reference needed] for details. Figure 7 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the USX2730 chip is shown below. Please refer to it. Figure 20 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the SD card 210 is shown.

[0041] exist Figure 1 In the implementation shown, the hub controller 140 uses the USB7002 HUB Controller chip. Please refer to [link / reference needed] for details. Figure 13 As shown, this is one embodiment of the present invention. Figure 1 The schematic diagram of the hub controller is shown. Figure 13 The hub controller shown includes a USB7002 HUB Controller chip and its peripheral circuitry. Figure 1 and Figure 13In the embodiment shown, the hub controller 140 mainly has one uplink port and three downlink ports, namely three USB 3.1 interfaces and one USB 2.0 interface. The uplink port is mainly used for data communication with the host, and the downlink ports are used to connect to the load or electronic devices such as SD cards, mobile phones, tablets, and computers.

[0042] exist Figure 1 In the implementation shown, the first multiplexer 150 uses the MUX (multiplexer) TUSB1046 chip. Please refer to [reference needed] for details. Figure 14 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the first multiplexer shown is shown below. Figure 14 The first multiplexer shown includes a MUX TUSB1046 chip and its peripheral circuitry; the second multiplexer 160 also uses a MUX TUSB1046 chip. Please refer to [reference needed] for details. Figure 15 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the second multiplexer shown is as follows. Figure 15 The second multiplexer shown includes the MUX TUSB1046 chip and its peripheral circuitry. Figure 1 , Figure 14 and Figure 15 As can be seen, the MUX (i.e., the first multiplexer 150 and the second multiplexer 160) uses the TUSB1046 chip from TI, which is mainly used for switching between DP signals and USB3.1 signals. This chip has built-in signal equalization and can be completely controlled by the MCU in the control circuit 110 through I2C, which can greatly reduce the number of peripheral circuits and reduce design costs.

[0043] Figure 1 The in-vehicle high-power USB data and video DP data charging module shown also includes a thermal protection circuit (not labeled). Please refer to [link / reference needed] for details. Figure 9 As shown, it is a circuit diagram of the thermal protection circuit in one embodiment of the present invention. Figure 9 The thermal protection circuit shown includes resistor R902, thermistor TH901, and capacitor C910. Resistor R902 is connected between the power supply terminal VDDD and connection node TP913; thermistor TH901 is connected between connection node TP913 and ground; capacitor C910 is connected between connection node TP913 and ground; the voltage at connection node TP913 is the RTC voltage NTC_1, which reflects the ambient temperature of the thermal protection circuit. Derating is calculated based on this RTC voltage NTC_1. In other words, Figure 9The thermal protection circuit shown mainly consists of an NTC resistor voltage divider circuit. The different resistance values ​​of the NTC at different temperatures are converted into different voltage signals. The MCU integrated within the CCG7D chip acquires this voltage signal, calculates the ambient temperature of the actual product, and then implements intelligent temperature derating based on different strategies.

[0044] Figure 1 The illustrated in-vehicle high-power USB data and video DP data charging module also includes a power rail circuit 220, which converts the in-vehicle DC input power VBAT received at the input terminal into one or more DC voltages to power the video data converter 130, hub controller 140, first multiplexer 150, second multiplexer 160, and SD card control circuit 200. Figure 1 In the specific embodiment shown, the power rail circuit 220 employs a two-stage power supply method to power the system. It is designed specifically for the different power supply requirements of various circuits, ensuring a reasonable power-on sequence and minimizing standby power consumption. Please refer to... Figure 17 As shown, this is an example of the invention in the first embodiment. Figure 1 The circuit diagram of the power rail circuit shown is for reference only. Figure 18 As shown, this is an example of the invention in the second embodiment. Figure 1 The circuit diagram of the power rail circuit shown is for reference only. Figure 19 As shown, this is the third embodiment of the present invention. Figure 1 The circuit diagram shown is of the power rail circuit.

[0045] Figure 1 The vehicle-mounted high-power USB data and video DP data charging module shown also includes an input interface 230, please refer to [reference needed]. Figure 3 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram of the input interface circuit shown is as follows. Figure 3 The power supply pin 1 of the input interface circuit shown is used to provide the vehicle DC input power VBAT, and its ground pin 3 is grounded.

[0046] Figure 1 The vehicle-mounted high-power USB data and video DP data charging module shown also includes an input protection and filtering circuit 240. The input terminal of the input protection and filtering circuit 240 receives the vehicle-mounted DC input power supply VBAT, and its output terminal is connected to the input terminal Vin of the control circuit 110 and the input terminal of the power rail circuit 220. The input protection and filtering circuit 240 is used for reverse connection protection, surge protection and filtering of the vehicle-mounted DC input power supply VBAT.

[0047] Please refer to Figure 2 As shown, this is one embodiment of the present invention. Figure 1The circuit diagram shown is for the input protection and filtering circuit. Figure 2 The input protection and filtering circuit shown includes an input reverse protection unit 242, a filtering unit 244, and a voltage regulation filtering unit 246.

[0048] The input reverse protection unit 242 includes a PMOS transistor Q100, a PMOS transistor Q101, a Zener diode D100, and a resistor R101. The source of the PMOS transistor Q100 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP103, and its drain is connected to the connection node TP100. The source of the PMOS transistor Q101 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP103, and its drain is connected to the connection node TP100. One end of the resistor R101 is connected to the connection node TP103, and the other end is grounded. The anode of the Zener diode D100 is connected to the connection node TP103, and its cathode is connected to the connection node TP100.

[0049] Filter unit 244 includes capacitors C101, C102, C103, C104, and C105, a Schottky diode D101, a Schottky diode D102, and an inductor L100. Capacitor C101 is connected between connection node TP100 and the ground terminal; capacitor C102 is connected between connection node TP100 and the ground terminal; inductor L100 is connected between connection node TP100 and connection node TP101; and capacitor C104 is connected to the connection node... Between TP101 and the ground terminal; capacitor C103 is connected between TP101 and the ground terminal; capacitor C105 is connected between TP101 and the ground terminal; the cathode of Schottky diode D102 is connected to TP101, and its anode is grounded; the cathode of Schottky diode D101 is connected to TP101, and its anode is grounded; TP101 is connected to the output terminal of the input protection and filtering circuit (or the input terminal Vin of control circuit 110).

[0050] The voltage regulation and filtering unit 246 includes a bidirectional Zener diode D103 and a capacitor C100. The bidirectional Zener diode D103 is connected between the vehicle DC input power supply VBAT and the ground terminal; the capacitor C100 is connected between the vehicle DC input power supply VBAT and the ground terminal.

[0051] In summary, this invention is based on Infineon's chips and uses a CCG7D chip to control PD & DP. While achieving a maximum single-port output of 60W and a total of 87W for simultaneous output from both ports, it also provides efficient audio and video transmission functions, allowing front passenger and rear passengers to enjoy the convenience of in-car screen mirroring. Furthermore, the efficient data communication can also solve the problem of not being able to use mobile phones while driving.

[0052] It should be noted that any modifications made by those skilled in the art to the specific embodiments of the present invention do not depart from the scope of the claims. Accordingly, the scope of the claims is not limited to the foregoing specific embodiments.

Claims

1. A vehicle-mounted high-power USB data and video DP data charging module, characterized in that, It includes control circuitry, an HMTD interface, a video data converter, a hub controller, a first multiplexer, a second multiplexer, an uplink USB interface, a first downlink USB interface, and a second downlink USB interface. The control circuit performs DC-DC conversion on the vehicle DC input power VBAT received at its input terminal Vin to obtain a first DC power supply 0-VBUS provided to the first downlink USB interface and / or a second DC power supply 1-VBUS provided to the second downlink USB interface. The video data converter, under the control of the control circuit, converts the video data from the HMTD interface into video DP data, and provides it to the first multiplexer and / or the second multiplexer. The hub controller, based on the control of the control circuit, provides USB data from the uplink USB interface to the first multiplexer and / or the second multiplexer, and provides USB data from the first multiplexer and / or the second multiplexer to the uplink USB interface. The first multiplexer switches the USB data provided by the hub controller or the video DP data provided by the video data converter to the first downlink USB interface based on the control of the control circuit. The second multiplexer, based on the control of the control circuit, switches the USB data provided by the hub controller or the video DP data provided by the video data converter to the second downlink USB interface. The control circuit includes a CCG7D chip. The CCG7D chip is communicatively connected to the video data converter, hub controller, first multiplexer, and second multiplexer. The uplink pins RIN0+ / RIN0- and RIN1+ / RIN1- of the video data converter are connected to the HMTD interface. Its downlink pin 0_HPD is connected to the corresponding pin of the CCG7D chip and the corresponding uplink pin of the first multiplexer. Its downlink pin 0_AUX+ / AUX- is connected to the corresponding uplink pin of the first multiplexer. Its downlink pin 0_DP4Lane is connected to the corresponding uplink pin of the first multiplexer. Its downlink pin 1_HPD is connected to the corresponding pin of the CCG7D chip and the corresponding uplink pin of the second multiplexer. Its downlink pin 1_AUX+ / AUX- is connected to the corresponding uplink pin of the second multiplexer. Its downlink pin 1_DP4Lane is connected to the corresponding uplink pin of the second multiplexer. It also includes a thermal protection circuit. The thermal protection circuit includes a resistor R902, a thermistor TH901, and a capacitor C910. The resistor R902 is connected between the power supply terminal VDDD and the connection node TP913. The thermistor TH901 is connected between the connection node TP913 and the ground terminal. The capacitor C910 is connected between the connection node TP913 and the ground terminal. The voltage at the connection node TP913 is the RTD voltage NTC_1, which reflects the ambient temperature of the thermal protection circuit. The RTD voltage NTC_1 is used to calculate and derating the circuit accordingly.

2. The in-vehicle high-power USB data and video DP data charging module according to claim 1, characterized in that, The CCG7D chip performs DC-DC conversion on the vehicle DC input power VBAT received at its input terminal Vin based on the PD charging protocol to obtain a first DC power supply 0-VBUS provided to the first downlink USB interface and / or a second DC power supply 1-VBUS provided to the second downlink USB interface.

3. The in-vehicle high-power USB data and video DP data charging module according to claim 2, characterized in that, When only the first downlink USB interface is connected to a device to be charged, the CCG7D chip controls the first downlink USB interface to provide a maximum charging power of 60W. When only the second downstream USB interface is connected to a device to be charged, the CCG7D chip controls the second downstream USB interface to provide a maximum charging power of 27W. When both the first and second downstream USB ports are connected to devices to be charged, the first downstream USB port provides a maximum charging power of 60W, while the second downstream USB port provides a maximum charging power of 27W.

4. The in-vehicle high-power USB data and video DP data charging module according to claim 1, characterized in that, The first downstream USB interface is a Type-C interface. Pin 0_CC of the first downstream USB interface is connected to the corresponding pin of the CCG7D chip, pin 0_D+ / D- is connected to the downstream pin of the hub controller, pin 0-VBUS is connected to the pin of the control circuit, pin 0-SUB1 / 2 is connected to the downstream pin of the first multiplexer, and pin 0_TX / 0_RX is connected to the downstream pin of the first multiplexer. The second downstream USB interface is a Type-C interface. Pin 1_CC of the second downstream USB interface is connected to the corresponding pin of the CCG7D chip, pin 1_D+ / D- is connected to the downstream pin of the hub controller, pin 1_VBUS is connected to the pin of the control circuit, pin 1_SUB1 / 2 is connected to the downstream pin of the second multiplexer, and pin 1_TX / 1_RX is connected to the downstream pin of the second multiplexer. The uplink USB interface is a Type-C interface. The VBUS_UP pin of the uplink USB interface is connected to the uplink pin corresponding to the hub controller, its D+ / D- pin is connected to the uplink pin corresponding to the hub controller, its CC1 pin is connected to the uplink pin corresponding to the hub controller, and its TX / RX pin is connected to the uplink pin corresponding to the hub controller. The downlink pin 0_TX / RX of the hub controller is connected to the uplink pin corresponding to the first multiplexer, and its downlink pin 1_TX / RX is connected to the uplink pin corresponding to the second multiplexer. Its downlink pin 0_CC1_P is grounded through a resistor.

5. The in-vehicle high-power USB data and video DP data charging module according to claim 4, characterized in that, It also includes an SD card control circuit. The downlink port of the SD card control circuit is used to connect to the SD card, and its uplink port pins D+ / D- are connected to the hub controller. The SD card interacts with the vehicle's infotainment system sequentially through the SD card control circuit, the hub controller, and the uplink USB interface.

6. The in-vehicle high-power USB data and video DP data charging module according to claim 5, characterized in that, The video data converter includes a DS90UH984WRURTQ1 and its peripheral circuitry. The SD card control circuit includes a USX chip and its peripheral circuits. Its downlink port can be designed to be pin-to-pin with the SD card PIN, and its uplink port is a USB 2.0 interface, which is directly connected to the hub controller. The hub controller includes a HUB Controller chip and its peripheral circuitry. The first multiplexer includes a MUX chip and its peripheral circuitry; The second multiplexer includes a MUX chip and its peripheral circuitry.

7. The in-vehicle high-power USB data and video DP data charging module according to claim 5, characterized in that, It also includes power rail circuitry. The power rail circuit uses a two-stage power supply method based on the vehicle-mounted DC input power supply VBAT to power the video data converter, hub controller, first multiplexer, second multiplexer, and SD card control circuit.

8. The in-vehicle high-power USB data and video DP data charging module according to any one of claims 1-7, characterized in that, It also includes an input interface. The power pin of the input interface is used to provide the vehicle-mounted DC input power VBAT, and its ground pin is grounded.

9. The in-vehicle high-power USB data and video DP data charging module according to any one of claims 1-7, characterized in that, It also includes input protection and filtering circuitry, which includes: The input reverse protection unit includes a PMOS transistor Q100, a PMOS transistor Q101, a Zener diode D100, and a resistor R101. The source of the PMOS transistor Q100 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP103, and its drain is connected to the connection node TP100. The source of the PMOS transistor Q101 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP103, and its drain is connected to the connection node TP100. One end of the resistor R101 is connected to the connection node TP103, and the other end is grounded. The anode of the Zener diode D100 is connected to the connection node TP103, and its cathode is connected to the connection node TP100. A filtering unit includes capacitors C101, C102, C103, C104, and C105, a Schottky diode D101, a Schottky diode D102, and an inductor L100. Capacitor C101 is connected between connection node TP100 and the ground terminal; capacitor C102 is connected between connection node TP100 and the ground terminal; and inductor L100 is connected between connection node TP100 and connection node TP101. The filter unit includes capacitors C101, C102, C103, C104, and C105, a Schottky diode D101, a Schottky diode D102, and an inductor L100. 4 is connected between connection node TP101 and the ground terminal; capacitor C103 is connected between connection node TP101 and the ground terminal; capacitor C105 is connected between connection node TP101 and the ground terminal; the cathode of the Schottky diode D102 is connected to connection node TP101, and its anode is grounded; the cathode of the Schottky diode D101 is connected to connection node TP101, and its anode is grounded; connection node TP101 is connected to the output terminal of the input protection and filtering circuit. The voltage regulation and filtering unit includes a bidirectional Zener diode D103 and a capacitor C100. The bidirectional Zener diode D103 is connected between the vehicle DC input power supply VBAT and the ground terminal; the capacitor C100 is connected between the vehicle DC input power supply VBAT and the ground terminal.

Images