Control circuit supporting double-port Type-C rapid charging

Abstract

The utility model discloses a control circuit supporting double-port Type-C fast charging, which comprises a Type-C interface module, a power management module, a control module, a protection module, a communication module and an indication module, the modules are connected through lines on a circuit board, the power management module is connected with the Type-C interface module, and the control module is connected with the Type-C interface module. The control module is connected with other modules through data lines, and the communication module is connected with external equipment.

Description

Technical Field

[0001] This utility model relates to the field of circuits, specifically a control circuit that supports dual-port Type-C fast charging. Background Technology

[0002] With the rapid development and widespread adoption of mobile electronic devices, especially smartphones, tablets, and wearable devices, higher demands are being placed on battery life and charging efficiency. Traditional charging technologies are gradually failing to meet market needs for fast charging, intelligent management, and portability, particularly in scenarios where multiple devices are charging simultaneously, where single interfaces and inefficient charging rates have become limiting factors. Therefore, fast charging technology, intelligent charging management, and multi-interface designs have become important research directions in the field of electronic device power management.

[0003] Due to its bidirectional charging, high-speed data transmission, and high-power transmission capabilities, the Type-C interface is gradually becoming the preferred charging and data transmission interface standard for next-generation electronic devices. However, implementing fast charging functionality with the Type-C interface is not simple. It requires complex circuit design to support multiple fast charging protocols (such as USB Power Delivery, Qualcomm Quick Charge, etc.), dynamic voltage and current adjustment, and intelligent identification and protection mechanisms. At the same time, compatibility with devices, security, and user experience must also be considered.

[0004] Current charging control circuit designs often face several key challenges: how to ensure battery safety and device compatibility while maintaining fast charging efficiency; how to achieve intelligent charging management to adapt to different device needs; and how to design for miniaturization and ease of use to suit portable scenarios. Therefore, designing an integrated dual-port Type-C fast charging control circuit that supports intelligent charging management, efficient protection, communication monitoring, and simple operation is crucial for solving existing technical challenges and driving advancements in charging technology. Utility Model Content

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A control circuit supporting dual-port Type-C fast charging includes a Type-C interface module, a power management module, a control module, a protection module, a communication module, and an indicator module. The modules are connected to each other via lines on a circuit board. The power management module is connected to the Type-C interface module, the control module is connected to other modules via a data cable, and the communication module is connected to external devices.

[0007] The Type-C interface module includes: two Type-C ports, a CC logic control chip, an E-Marker sensing resistor, and a VCONN controller.

[0008] The power management module includes: an AC-DC converter, a DC-DC buck converter, a MOSFET, and a voltage and current sensing resistor.

[0009] The control module includes: microcontroller, EEPROM, clock source, and ADC.

[0010] The protection modules include: overvoltage protection, overcurrent protection, overtemperature protection, and short circuit protection.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. Improved charging efficiency and convenience: By supporting the dual Type-C interface design, not only is the convenience of charging improved, allowing two devices to be fast charged at the same time, but each interface is also compatible with fast charging protocols, significantly shortening charging time and meeting the needs of modern users for fast charging.

[0013] 2. Intelligent charging management and compatibility: The intelligent design of the power management module and control module can automatically adjust the output voltage and current according to the specific needs of the connected device, realizing intelligent charging. The MCU, which supports multiple charging protocols, ensures wide compatibility and can automatically identify and match the most suitable charging mode for different devices, improving charging efficiency and battery life.

[0014] 3. Safety Assurance: Through comprehensive protection mechanisms, including overvoltage, overcurrent, overtemperature, and short circuit protection, the circuit can react quickly in abnormal situations to avoid damage to equipment or safety risks, thereby enhancing the safety of the charging process and protecting the user's property and personal safety.

[0015] 4. Real-time monitoring and communication functions: The integrated communication module allows the device to transmit data and monitor charging status with external devices such as smartphones and computers, making it easy for users to keep track of charging progress and device information in real time. The charging process can be managed through an APP or software, which improves user experience and interactivity.

[0016] 5. Compact Portability and Ease of Use: The design focuses on the product's compact size, making it suitable for diverse usage scenarios. The reversible Type-C interface simplifies user operation and improves the user experience. There is no need to worry about the plug direction, making charging more convenient and faster.

[0017] 6. Flexible configuration and upgrade potential: Adopting high-performance, programmable MCUs and EEPROMs, it leaves enough room for future upgrades and the addition of new functions. The system is scalable and supports new charging protocols or function updates that can be implemented through software, extending the product life cycle.

[0018] In summary, this application, through the comprehensive application of advanced technologies and designs, not only improves charging efficiency and convenience but also enhances safety, while simultaneously improving user experience and compatibility. It fully embodies the modern, convenient, safe, and efficient characteristics of smart electronic products and is of great significance to promoting the advancement of charging technology. Attached Figure Description

[0019] Figure 1 This is a circuit connection block diagram of this application; Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] A control circuit that supports dual-port Type-C fast charging, such as Figure 1 As shown, including

[0022] Type-C interface module:

[0023] It has two Type-C ports that support reversible insertion, making it convenient for users to connect devices.

[0024] The interface contains the necessary circuitry to support data transmission and power transmission functions.

[0025] Power management module:

[0026] It includes one or more power conversion units, which are responsible for converting the input electrical energy into electrical energy suitable for use by the charging device.

[0027] It includes voltage and current regulation circuitry to enable intelligent charging for different devices.

[0028] Control module:

[0029] A high-performance microcontroller (MCU) is used to handle the control logic of the entire circuit.

[0030] The MCU has built-in charging protocols, such as USB PD and QC, to enable fast charging.

[0031] Protection module:

[0032] It includes circuits for overvoltage protection, overcurrent protection, and overtemperature protection to ensure safety during the charging process.

[0033] When an abnormality is detected, the power supply can be quickly cut off to prevent equipment damage or danger.

[0034] Communication module:

[0035] It supports communication with external devices, such as smartphones and computers, to enable data transmission and charging status monitoring.

[0036] Wireless communication technologies such as Bluetooth and Wi-Fi, or wired communication technologies such as USB can be used.

[0037] Indicator module:

[0038] It includes display elements such as LED indicators to indicate charging status, power level, and other information.

[0039] Different light flashing modes can be set as needed to distinguish different charging states.

[0040] Connection method

[0041] The various modules are interconnected via circuitry on a circuit board, ensuring efficient transmission of power and signals. The power management module connects to the Type-C interface module through appropriate circuitry to deliver power to the charging device. The control module connects to other modules via data cables for control and monitoring. The communication module connects to external devices through a specific interface.

[0042] Function Description

[0043] 1. Dual-port fast charging:

[0044] It supports simultaneous charging via two Type-C ports, improving charging convenience.

[0045] Each port supports fast charging protocols, enabling rapid charging of the device.

[0046] 2. Intelligent charging management:

[0047] It automatically adjusts the output voltage and current according to the charging needs of the connected device to achieve intelligent charging.

[0048] It can identify the charging protocols of different devices and select the most suitable charging mode for them.

[0049] 3. Safety Protection:

[0050] Multiple protection measures ensure the safety and reliability of the charging process.

[0051] When an abnormality is detected, the power supply can be quickly cut off to prevent equipment damage or danger.

[0052] 4. Communication and Monitoring:

[0053] It supports communication with external devices, allowing users to easily check charging status and device information at any time.

[0054] The charging process can be monitored and managed via a mobile app or computer software.

[0055] 5. Convenience:

[0056] The product is small in size, easy to carry, and suitable for various scenarios.

[0057] The Type-C interface supports reversible insertion, making it convenient for users.

[0058] In a specific embodiment, each module is configured in detail:

[0059] 1. Type-C interface module

[0060] Includes: Type-C port, CC logic control chip, E-Marker sensing resistor, and VCONN controller.

[0061] Specific model examples:

[0062] Type-C port: Amphenol 10Gbps USB Type-C Receptacle, supporting high-speed data transfer and high-current charging.

[0063] CC logic control chip: TUSB2046B02, supports USB Power Delivery 3.0, and can automatically identify connected devices and perform role switching and voltage negotiation.

[0064] 2. Power Management Module

[0065] This includes: AC-DC converters, DC-DC buck converters (such as Buck), MOSFETs, and voltage and current sensing resistors.

[0066] Specific model examples:

[0067] AC-DC converter: PI INR2191818, a high-efficiency isolated AC-DC converter suitable for fast charging adapter applications.

[0068] DC-DC buck converter: TI LM51176500, supports high-efficiency synchronous buck, suitable for fast dynamic voltage regulation.

[0069] MOSFET: Infineon BSC010N05LS, suitable for high-efficiency power switching, used for current control.

[0070] 3. Control Module

[0071] This includes: a microcontroller (MCU), an EEPROM (used to store firmware), a clock source, and an ADC (analog-to-digital converter).

[0072] Specific model examples:

[0073] MCU: STM32F407ZG-E6, a high-performance Cortex-M4F MCU with FPU, supporting USB PD protocol stack and fast charging algorithm.

[0074] EEPROM: Micron M25M010A, used to store firmware and configuration parameters.

[0075] ADC: Integrated within the STM32F407ZG-E6, used for voltage and current monitoring.

[0076] 4. Protection Module

[0077] This includes: overvoltage protection (TVS), overcurrent protection (fuse or MOSFET), overtemperature protection (thermometer), and short-circuit protection (current sensing resistor).

[0078] Specific model examples:

[0079] Overvoltage protection: Bourns TUSB33CA6005C, 60V transient voltage suppressor diode.

[0080] Overcurrent protection: PolySwitch (resetting fuse) Raychem R3020P, which can automatically reset overcurrent protection.

[0081] Over-temperature protection: NTC thermistors, such as EPCOSCON NTC10K33D103F0G, are used to monitor temperature and trigger the protection circuit.

[0082] Short circuit protection: Rapid disconnection is achieved through ADC monitoring of current and MOSFET control.

[0083] Type-C interface module

[0084] Type-C Port: The Amphenol 10Gbps USB Type-C Receptacle is soldered directly onto the PCB board for connecting external devices.

[0085] CC logic control chip (such as TUSB2046B02): Its CC pin is connected to the CC pin of the Type-C port for detection and configuration; the INT pin is connected to the interrupt pin of the MCU for notification of connection status changes.

[0086] E-Marker sensing resistor: Configured on the CC pin according to the Type-C specification, connected to the VCONN controller or directly connected to the CC logic chip.

[0087] VCONN controller: If used, it is connected to the power management module under the control of the CC logic chip to adjust the power supply strategy, according to the design configuration.

[0088] Power Management Module

[0089] AC-DC converter (PI INR2181818): Input connects to AC power supply, output connects to DC-DC step-down converter.

[0090] DC-DC buck converter (such as TI LM51176500): The input comes from the AC-DC converter, the output is connected to the MOSFET, and the control signal is controlled by the MCU through PWM output to control the voltage.

[0091] MOSFET (Infineon BSC010N05LS): Gate connected to the MCU control signal, source to the load (battery or directly to the Type-C interface), and drain to ground.

[0092] Voltage and current sensing resistor: connected in series between the power supply output and the load, with its two ends connected to the ADC of the MCU, used to detect voltage and current.

[0093] Control module

[0094] MCU (STM32F407ZG-E6): GPIO is used to control various modules (such as PWM output to DC-DC, interrupt input from CC logic chip), ADC input is connected to voltage and current sensing resistor, I2C / SPI is used for Type-C communication.

[0095] EEPROM (Micron M25M0A): Connects to the MCU via the SPI interface to store firmware and configuration parameters.

[0096] Clock source: Directly connected to the clock pin of the MCU to provide the clock signal.

[0097] ADC: The built-in ADC pin is connected to voltage and current sensing resistors, and the sampling point and control are configured through software.

[0098] Protection module

[0099] Overvoltage protection (Bourns TUSB33CA6005C): Connected in series between the input and the AC-DC converter, it conducts protection at the back end in case of overvoltage.

[0100] Overcurrent protection (e.g., PolySwitch Raychem R3020P): Connected in series at the power output, it automatically disconnects the circuit during overcurrent and reconnects after recovery.

[0101] Over-temperature protection (NTC thermistor): Connected to the ADC input of the MCU, the MOSFET is cut off by software control when the temperature exceeds the limit.

[0102] Short circuit protection: By monitoring the ADC to quickly detect abnormal current, the MCU controls the MOSFET to quickly turn off the circuit.

[0103] Communication module

[0104] The MCU communicates with external devices via its USB or wireless module (such as the ESP32826 module) to achieve control and status updates.

[0105] Indicator Module

[0106] LED indicator: Controlled by GPIO and driven by MCU, different flashing modes are programmed according to the charging status.

[0107] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A control circuit supporting dual-port Type-C fast charging, characterized in that, It includes a Type-C interface module, a power management module, a control module, a protection module, a communication module, and an indicator module. The modules are connected to each other through lines on the circuit board. The power management module is connected to the Type-C interface module, the control module is connected to other modules through a data cable, and the communication module is connected to external devices.

2. The control circuit supporting dual-port Type-C fast charging according to claim 1, characterized in that, The Type-C interface module includes: two Type-C ports, a CC logic control chip, an E-Marker sensing resistor, and a VCONN controller.

3. The control circuit supporting dual-port Type-C fast charging according to claim 2, characterized in that, The power management module includes: an AC-DC converter, a DC-DC buck converter, a MOSFET, and a voltage and current sensing resistor.

4. The control circuit supporting dual-port Type-C fast charging according to claim 3, characterized in that, The control module includes: microcontroller, EEPROM, clock source, and ADC.

5. A control circuit supporting dual-port Type-C fast charging according to claim 4, characterized in that, The protection modules include: overvoltage protection, overcurrent protection, overtemperature protection, and short circuit protection.

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