Type-c interface detection circuit and automatic test equipment

Abstract

This utility model discloses a Type-C interface testing circuit and automated testing equipment, including a Type-C controller, an MCU module, a storage module, and a Type-C socket module. The Type-C controller includes a power management chip and has an IIC interface and an SPI interface; the Type-C controller is used for Type-C interface testing. The MCU module is connected to the Type-C controller via the IIC interface and is used to control the power management chip. The storage module is connected to the Type-C controller via the SPI interface and is used to store data during the testing process. The Type-C socket module includes a Type-C socket, a USB-A socket, and a Micro-USB socket; the Type-C socket is used to connect the product under test (DUT), the USB-A socket is used to connect to a computer, and the Micro-USB socket connects to the MCU module. By integrating a high-precision testing module, comprehensive and efficient Type-C functional testing is achieved, meeting the automated testing needs of large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology, and in particular to a Type-C interface detection circuit and automated testing equipment. Background Technology

[0002] The Type-C interface has become the standard interface for electronic devices due to its advantages such as reversible plugging, high-speed data transmission, and fast charging. Current technologies require multiple testing devices to measure parameters such as voltage, current, and resistance, and to mechanically test the reversible functionality of the Type-C interface through repeated plugging and unplugging. The complex functions of the Type-C interface, such as Alt Mode and the PD protocol, further increase the testing difficulty, resulting in cumbersome testing procedures, high equipment costs, and the inability to achieve accurate results due to human error. Traditional testing equipment suffers from low efficiency, large size, high cost, and is prone to errors. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a Type-C interface detection circuit and automated testing equipment. By integrating a high-precision testing module, it achieves comprehensive and efficient Type-C functional testing, meeting the automated testing needs of large-scale production.

[0004] On one hand, this utility model embodiment provides a Type-C interface detection circuit, including: The Type-C controller includes a power management chip and has an IIC interface and an SPI interface. The Type-C controller is used for Type-C interface detection. The MCU module is connected to the Type-C controller via the IIC interface, and the MCU module is used to control the power management chip; A storage module is connected to the Type-C controller via the SPI interface, and the storage module is used to store data during the testing process; The Type-C socket module includes a Type-C socket, a USB-A socket, and a Micro-USB socket. The Type-C socket is used to connect the product under test, the USB-A socket is used to connect to a computer, and the Micro-USB socket is connected to the MCU module.

[0005] According to some embodiments of this utility model, the Type-C controller is connected to an LDO module, which is used to stabilize the output DC voltage.

[0006] According to some embodiments of the present invention, the LDO module includes a voltage regulator chip, a first filter capacitor, a second filter capacitor, and a first diode. The first filter capacitor and the first diode are connected in parallel to the input terminal of the voltage regulator chip, and the second filter capacitor is connected to the output terminal of the voltage regulator chip.

[0007] According to some embodiments of the present invention, the Type-C controller is provided with a PLUG pin and an EN pin. The PLUG pin is used to receive a signal that triggers the start of detection, and the EN pin is used to receive a signal that controls the power management chip to switch.

[0008] According to some embodiments of the present invention, the storage module has a first IO terminal and a second IO terminal, and the Type-C controller is provided with a MISO pin and a MOSI pin. The first IO terminal is connected to the MISO pin, and the second IO terminal is connected to the MOSI pin.

[0009] According to some embodiments of the present invention, the Type-C socket is connected to a filtering network, which includes multiple filtering capacitors connected in parallel.

[0010] According to some embodiments of this utility model, the power management chip uses an integrated circuit with model number TPS65987DDHRSHR.

[0011] According to some embodiments of this utility model, the MCU module adopts an integrated circuit with model number STM32F070F6P6TR.

[0012] According to some embodiments of the present invention, the storage module is an EEPROM memory, which is used to store data during the testing process.

[0013] On the other hand, this utility model embodiment provides an automated testing device, including the above-mentioned Type-C controller.

[0014] The embodiments of this utility model have at least the following beneficial effects: The Type-C interface detection circuit of this embodiment includes a Type-C controller, an MCU module, a storage module, and a Type-C socket module. The main function of the Type-C controller is to detect the operating status of the Type-C interface, ensuring that the Type-C interface can transmit data and supply power normally. The MCU module is responsible for controlling the power management chip, realizing precise management and control of the Type-C interface detection. The storage module 300 is used to store various types of data during the test; when power is lost and then restored, this data will also be saved in the storage module. The Type-C socket module can provide a Type-C interface for the product under test, while also supporting USB-A and Micro-USB interfaces, facilitating connection and data transmission with computers and other devices. This effectively detects the Type-C interface of the product under test, meeting the automated testing needs of large-scale production; it is easy to operate, improves testing efficiency, and reduces testing costs.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic block diagram of the Type-C interface detection circuit according to an embodiment of the present invention; Figure 2 for Figure 1 The circuit schematic of the Type-C controller for the Type-C interface detection circuit is shown. Figure 3 for Figure 1 The circuit schematic of the MCU module for the Type-C interface detection circuit is shown. Figure 4 for Figure 1 The circuit diagram of the Type-C socket of the Type-C socket module shown is a Type-C interface detection circuit. Figure 5 for Figure 1 The circuit diagram shown is of the USB-A socket of the Type-C socket module with the Type-C interface detection circuit. Figure 6 for Figure 1 The circuit diagram shown is of the Micro-USB socket of the Type-C socket module with the Type-C interface detection circuit. Figure 7 for Figure 1The circuit schematic of the LDO module of the Type-C interface detection circuit is shown. Figure 8 This is a circuit diagram of the filter network of the Type-C interface detection circuit in an embodiment of this utility model.

[0017] Figure label: Type-C controller 100, MCU module 200, storage module 300, Type-C socket module 400, Type-C socket 410, USB-A socket 420, Micro-USB socket 430, LDO module 500, and filter network 600. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, the terms "setting" and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] This embodiment discloses a Type-C interface detection circuit. Please refer to... Figures 1 to 6The Type-C interface detection circuit includes a Type-C controller 100, an MCU module 200, a storage module 300, and a Type-C socket module 400. The Type-C controller 100 includes a power management chip and has both an IIC and SPI interface; it is used for Type-C interface detection. The MCU module 200 connects to the Type-C controller 100 via the IIC interface and controls the power management chip. The storage module 300 connects to the Type-C controller 100 via the SPI interface and stores data during the test. The Type-C socket module 400 includes a Type-C socket 410, a USB-A socket 420, and a Micro-USB socket 430. The Type-C socket 410 connects to the product under test (DUT), the USB-A socket 420 connects to a computer, and the Micro-USB socket 430 connects to the MCU module 200.

[0022] The main function of the Type-C controller 100 is to detect and control the operating status of the Type-C interface, ensuring that the Type-C interface can transmit data and supply power normally for Type-C interface testing. The MCU module 200 is responsible for controlling the power management chip, achieving precise management and control of the Type-C interface testing. The storage module 300 stores various data during the testing process; this data is also stored in the storage module 300 when power is lost and then restored. The Type-C socket module 400 provides a Type-C interface for the product under test, while also supporting USB-A and Micro-USB interfaces, facilitating connection and data transfer with computers and other devices. This effectively enables Type-C interface testing of the product under test; it is easy to operate, improves testing efficiency, and reduces testing costs.

[0023] Please refer to Figure 2 and Figure 7 The Type-C controller 100 is connected to an LDO module 500, which is used to stabilize the output DC voltage. The LDO module includes a voltage regulator chip B1, a first filter capacitor C17, a second filter capacitor C19, and a first diode D4. The first filter capacitor C17 and the first diode D4 are connected in parallel to the input terminal of the voltage regulator chip B1, and the second filter capacitor C19 is connected to the output terminal of the voltage regulator chip B1. Through a linear regulation mechanism, the LDO module 500 can maintain a stable output voltage even when the difference between the input and output voltages is extremely low, exhibiting characteristics such as low voltage drop, high precision, and low noise.

[0024] Please refer to Figure 2The Type-C controller 100 has a PLUG pin and an EN pin. The PLUG pin receives a signal to trigger the start of detection, while the EN pin receives a signal to control the power management chip's switch. The PLUG pin primarily receives external connection signals. When a Type-C interface is inserted into a device under test (DUT), the PLUG pin receives the corresponding signal, thus initiating the detection process. The EN pin receives control signals. When an external signal is received, the EN pin's control signal allows the relevant circuitry of the Type-C controller 100 to operate, thereby initiating communication and data transmission between Type-C devices. When a Type-C interface is inserted, the PLUG pin receives an insertion signal and transmits it to the core circuitry of the Type-C controller 100. Simultaneously, the EN pin, upon receiving the external signal, controls the corresponding signal path to open, enabling the Type-C controller 100 to begin detection and data transmission.

[0025] Please refer to Figure 2 The storage module 300 has a first I / O port and a second I / O port. The Type-C controller 100 has a MISO pin and a MOSI pin. The first I / O port is connected to the MISO pin, and the second I / O port is connected to the MOSI pin. The first I / O port of the storage module 300 is used to receive data signals from the Type-C controller 100 and acquire data through the MISO pin; the second I / O port is used to send data signals to the Type-C controller 100 and output data through the MOSI pin. The Type-C controller 100 is responsible for managing bidirectional data transmission with the storage module 300, enabling smooth read and write operations through these two different ports. By inputting data through the MISO pin and sending data to the storage module 300 through the MOSI pin, the Type-C controller 100 achieves efficient data transmission and enables smooth read and write operations.

[0026] Please refer to Figure 4 and Figure 8 The Type-C socket 410 is connected to a filter network 600, which includes multiple filter capacitors connected in parallel. The filter network 600 reduces electromagnetic interference and power fluctuations. It consists of multiple filter capacitors connected in parallel, which smooth current fluctuations, provide voltage regulation, and reduce the impact of transient voltage changes. It also includes a diode D1 with surge protection, which conducts and shunts current for a very short time to absorb sudden energy, preventing damage to the test equipment from instantaneous overvoltage or overcurrent.

[0027] Please refer to Figure 2The power management chip uses an integrated circuit with model number TPS65987DDHRSHR. It employs surface mount technology (SMT) for high-density integration, meeting the miniaturization requirements of the test board; the package type is VQFN-56, with 56 pins and an operating voltage of 3.14V~3.45V.

[0028] Please refer to Figure 3 The MCU module 200 uses an STM32F070F6P6TR integrated circuit. It employs SMT surface mount technology for high-density integration, meeting the miniaturization requirements of the test board; it has 20 pins, uses a 32-bit MCU, and operates at a voltage of 2.4V~3.6V.

[0029] Please refer to Figure 2 The storage module 300 is an EEPROM memory, using an integrated circuit of model W25X05CLUXIGTR. The EEPROM memory is used to store data during the testing process. Surface mount technology (SMT) is used for surface mounting to achieve high-density integration and meet the miniaturization requirements of the test board; it has 8 pins, a storage capacity of 512K, and an operating voltage of 2.3V~3.6V.

[0030] Please refer to Figure 4 The Type-C socket 410 uses an integrated circuit of model DX07VN24WA2C1568. It adopts surface mount technology (SMT) to achieve high-density integration and meet the miniaturization requirements of test boards; the package size is 18.4*14.6*6.9mm, and the number of pins is 24PIN+6PIN.

[0031] Please refer to Figure 5 The USB-A socket 420 uses a component with model number CY-ZAF1-9PA-165. It adopts DIP mounting, has a package size of 16.5x14.5x7.0mm, 9+2 pins, and a horizontal interface type.

[0032] Please refer to Figure 6 The Micro-USB socket 430 uses component number 10118194-0001LF. It uses SMT surface mount technology, has a package size of 8.08x5.53x3.0mm, 5+4 pins, and a horizontal interface type.

[0033] This embodiment also discloses an automated testing device, including the aforementioned Type-C interface detection circuit. This achieves fully automated control of the Type-C interface testing process, reducing manual intervention and errors, and improving testing stability.

[0034] Connect the product under test (DUT) to the Type-C connector 410 and to the computer via the USB-A connector 420. Test the Type-C interface communication and speed of the DUT through both the Type-C connector 410 and the USB-A connector 420. Use the STM32F070F6P6TR chip in the MCU module 200 to control the power management chip of the Type-C controller 100 to perform the following Type-C interface tests: 1. Connection Detection and Role Determination: When the Type-C socket 410 of the test board is plugged into the product under test, the TPS65987DDHRSHR chip detects the connection event and orientation via the CC1 pin. By default, it operates as a dual-role port, capable of negotiating with the PD protocol to become a power source or power receiver, or simultaneously perform data master / slave functions, depending on the connected device.

[0035] 2. Power Transmission Negotiation: After establishing a connection, the power management chip's PD physical layer and policy engine communicate via USB PD through the CC line; negotiating voltage and current levels with the connected product under test, for example, supporting 5V to 20V, up to 5A. Its integrated high-efficiency bidirectional power path, with built-in 25mΩ power FETs, then activates the corresponding power path based on the negotiation result, providing comprehensive protection mechanisms such as undervoltage, overvoltage, and reverse current protection.

[0036] 3. Continuous Management and Disconnection Handling: Throughout the connection process, the Type-C controller 100 continuously monitors parameters such as VBUS voltage, current, and temperature. When it detects that the cable has been unplugged, it quickly shuts off the power path and resets the relevant registers, waiting for the next connection.

[0037] This embodiment has the following beneficial effects: 1. Simple circuit design: By simplifying the circuit design, the complexity and maintenance difficulty of the system are reduced; the operation is simple and the detection efficiency is improved.

[0038] 2. Comprehensive Type-C Interface Detection: Enables PD protocol detection for Type-C interfaces, connection detection, reversible insertion detection, port role detection, and power management such as overvoltage, overcurrent, and overheat protection for Type-C interfaces.

[0039] 3. Small size: The main circuit components are surface mounted using SMT technology to achieve high-density integration and meet the miniaturization requirements of the test board.

[0040] 4. Low cost: The use of low-cost circuit components reduces the overall cost of the solution.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A Type-C interface detection circuit, characterized in that, include: Type-C controller (100), the Type-C controller (100) includes a power management chip, has an IIC interface and an SPI interface, the Type-C controller (100) is used for Type-C interface detection; MCU module (200), the MCU module (200) is connected to the Type-C controller (100) through the IIC interface, and the MCU module (200) is used to control the power management chip; A storage module (300) is connected to the Type-C controller (100) via the SPI interface. The storage module (300) is used to store data during the testing process. Type-C socket module (400), the Type-C socket module (400) includes a Type-C socket (410), a USB-A socket (420) and a Micro-USB socket (430), the Type-C socket (410) is used to connect the product under test, the USB-A socket (420) is used to connect the computer, and the Micro-USB socket (430) is connected to the MCU module (200).

2. The Type-C interface detection circuit of claim 1, wherein, The Type-C controller (100) is connected to an LDO module (500), which is used to stabilize the output DC voltage.

3. The Type-C interface detection circuit of claim 2, wherein, The LDO module (500) includes a voltage regulator chip, a first filter capacitor, a second filter capacitor, and a first diode. The first filter capacitor and the first diode are connected in parallel to the input terminal of the voltage regulator chip, and the second filter capacitor is connected to the output terminal of the voltage regulator chip.

4. The Type-C interface detection circuit of claim 1, wherein, The Type-C controller (100) is provided with a PLUG pin and an EN pin. The PLUG pin is used to receive a signal that triggers the start of detection, and the EN pin is used to receive a signal that controls the power management chip to switch.

5. The Type-C interface detection circuit according to claim 1, characterized in that, The storage module (300) has a first IO terminal and a second IO terminal. The Type-C controller (100) is provided with a MISO pin and a MOSI pin. The first IO terminal is connected to the MISO pin, and the second IO terminal is connected to the MOSI pin.

6. The Type-C interface detection circuit of claim 1, wherein, The Type-C socket (410) is connected to a filter network (600), which includes a plurality of filter capacitors connected in parallel.

7. The Type-C interface detection circuit of claim 1, wherein, The power management chip uses an integrated circuit with the model number TPS65987DDHRSHR.

8. The Type-C interface detection circuit according to claim 1, characterized in that, The MCU module (200) uses an integrated circuit with model number STM32F070F6P6TR.

9. The Type-C interface detection circuit according to claim 1, characterized in that, The storage module (300) is an EEPROM memory, which is used to store data during the testing process.

10. An automated testing device, characterized in that, Includes the Type-C interface detection circuit as described in any one of claims 1 to 9.

Images