Type-C adapter protection circuit

Abstract

The utility model relates to the field of circuit protection, and discloses a protection circuit of a Type-C adapter. The protection circuit of the Type-C adapter includes: a Type-C male head is connected to a first electrostatic protection module, the first electrostatic protection module is used to protect the Type-C male head from electrostatics, a Type-C female head is connected to a second electrostatic protection module, the second electrostatic protection module is used to protect the Type-C female head from electrostatics; the power supply pin of the Type-C male head is connected to a voltage stabilization module, and the power supply pin of the Type-C female head is connected to a voltage stabilization module; the configuration pin and sideband pin of the Type-C male head are connected to the voltage stabilization module, and the configuration pin and sideband pin of the Type-C female head are connected to the voltage stabilization module; the differential pin of the Type-C male head is connected to a differential signal stabilization module, and the differential pin of the Type-C female head is connected to a differential signal stabilization module. In the embodiment of the utility model, the effect of stabilizing the transmission current and voltage in the test process of producing electronic products is achieved, and the damage of electronic products by electrostatic discharge is avoided.

Description

Technical Field

[0001] The utility model relates to the field of circuit protection, and in particular to a protection circuit for a Type-C adapter. Background Art

[0002] During the production and testing of electronic products, it is difficult to avoid various static electricity problems and unstable voltage output problems. The existing static electricity protection of electronic products mainly protects the human body from static electricity, and uses protective clothing to guide the charge for pre-protection. Inside the electronic products, it is mainly to connect the electronic products with external conductors to guide the charge accumulated in the operation of the electronic products, so as to avoid static electricity discharge in the operation of the electronic products.

[0003] Although the existing anti-static protection can greatly reduce the failure of electronic products caused by static discharge, the production process requires the product to be constantly plugged in and out of the interface for product quality testing. During the long-term plugging and unplugging process, iron filings and loose circuits will cause the interface to short-circuit. Even if a series of anti-static measures are taken, it is difficult to eliminate static electricity. Due to the interface short circuit, the equipment will still be damaged. Therefore, the current anti-static measures and solutions cannot perfectly solve the problem of electronic equipment damage in the product production process, and a new technology is needed to solve the current technical problems. Utility Model Content

[0004] The main purpose of the utility model is to solve the technical problem that current anti-static measures and solutions cannot perfectly solve the damage of electronic equipment in the product production process.

[0005] The first aspect of the utility model provides a protection circuit for a Type-C adapter, comprising:

[0006] Type-C male connector, Type-C female connector, first electrostatic protection module, second electrostatic protection module, voltage stabilization module, overload protection module, differential signal stabilization module;

[0007] The Type-C male connector is connected to a first electrostatic protection module, and the first electrostatic protection module is used to provide electrostatic protection for the Type-C male connector. The Type-C female connector is connected to a second electrostatic protection module, and the second electrostatic protection module is used to provide electrostatic protection for the Type-C female connector.

[0008] The power supply pin of the Type-C male connector is connected to the voltage stabilization module, and the power supply pin of the Type-C female connector is connected to the voltage stabilization module;

[0009] The configuration pin and the sideband pin of the Type-C male connector are connected to the overload protection module, and the configuration pin and the sideband pin of the Type-C female connector are connected to the overload protection module;

[0010] The differential pins of the Type-C male connector are connected to the differential signal stabilization module, and the differential pins of the Type-C female connector are connected to the differential signal stabilization module.

[0011] Optionally, in a first implementation of the first aspect of the utility model, the first electrostatic protection module includes: a first diode, a second diode, a third diode, a fourth diode, and a fifth diode;

[0012] Anodes of the first diode, the second diode and the third diode are connected and grounded;

[0013] The cathode of the first diode is connected to the anode of the fourth diode, and the cathode of the second diode is connected to the anode of the fifth diode;

[0014] The cathode of the fourth diode is connected to the cathode of the third diode, and the cathode of the fifth diode is connected to the cathode of the third diode.

[0015] Optionally, in a second implementation of the first aspect of the utility model, the cathode of the first diode is connected to the pin of the Type-C male connector, and the cathode of the second diode is connected to the pin of the Type-C male connector.

[0016] Optionally, in a third implementation of the first aspect of the utility model, the fifth diode includes: a unidirectional TVS diode.

[0017] Optionally, in a fourth implementation of the first aspect of the utility model, one end of the first electrostatic protection module is connected to a configuration pin of the Type-C male connector, and the other end of the first electrostatic protection module is connected to a sideband pin of the Type-C male connector.

[0018] Optionally, in a fifth implementation of the first aspect of the utility model, one end of the first electrostatic protection module is connected to the DP positive pin of the Type-C male connector, and the other end of the first electrostatic protection module is connected to the DP negative pin of the Type-C male connector.

[0019] Optionally, in a sixth implementation of the first aspect of the utility model, one end of the second electrostatic protection module is connected to a configuration pin of the Type-C female connector, and the other end of the second electrostatic protection module is connected to a sideband pin of the Type-C female connector.

[0020] Optionally, in a seventh implementation of the first aspect of the utility model, one end of the second electrostatic protection module is connected to the DP positive pin of the Type-C female connector, and the other end of the second electrostatic protection module is connected to the DP negative pin of the Type-C female connector.

[0021] Optionally, in an eighth implementation of the first aspect of the utility model, the voltage stabilization module includes: a KTS1675A voltage stabilizer.

[0022] Optionally, in a ninth implementation of the first aspect of the utility model, the differential signal stabilization module includes: an RClamp0524P voltage stabilizer.

[0023] In the embodiment of the utility model, a stable electrostatic protection module is connected and arranged between the male and female heads of the Type-C adapter to avoid damage to the test at the plug-in point of the male and female heads. A voltage stabilization module, an overload protection module, and a differential signal stabilization module are arranged at different pin connections of the male and female heads to avoid damage to the connected devices due to voltage fluctuations during the transfer process. This achieves a stable transmission of current and voltage during the test process of producing electronic products, and avoids damage to electronic products due to static electricity release. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an embodiment of a protection circuit of a Type-C adapter in an embodiment of the utility model;

[0025] Figure 2 Schematic diagram of the circuit of the Type-C female connector in an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the circuit of the Type-C male connector in an embodiment of the present invention;

[0027] Figure 4 is a circuit diagram of a first electrostatic protection module in an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of a voltage stabilization module in an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of an overload protection module in an embodiment of the present invention;

[0030] Figure 7 Schematic diagram of a differential signal stabilization module in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] An embodiment of the utility model provides a protection circuit for a Type-C adapter.

[0032] The following will describe the embodiments of the present invention in more detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0033] In the description of the embodiments disclosed in the present utility model, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0034] For ease of understanding, the specific process of the embodiment of the utility model is described below. Figure 1 , a schematic diagram of an embodiment of the protection circuit of the Type-C adapter in the embodiment of the utility model includes:

[0035] Type-C male connector 101, Type-C female connector 102, first electrostatic protection module 103, second electrostatic protection module 104, voltage stabilization module 106, overload protection module 105, differential signal stabilization module 107;

[0036] In this circuit, a first electrostatic protection module 103 is connected to the Type-C male connector 101, which can directly conduct away the abnormal voltage to protect the Type-C male connector from electrostatic discharge when a short circuit occurs at the Type-C male connector 101. Similarly, a second electrostatic protection module 104 is connected to the Type-C female connector 102, which can directly conduct away the abnormal voltage to protect the Type-C female connector 102 from electrostatic discharge when a short circuit occurs at the Type-C female connector 102.

[0037] See also Figure 2 , Figure 2 This is a circuit diagram of the Type-C female connector in an embodiment of the present invention. Please refer to Figure 3 , Figure 3The circuit diagram of the Type-C male connector in the embodiment of the present invention is shown in Figure 1. The Type-C female connector 101 and the Type-C male connector 102 both have 24 external pins. Specifically, the power supply pin VBUS of the Type-C male connector 101 is connected to one end of the voltage stabilization module, while the power supply pin VBUS of the Type-C female connector 102 is connected to the other end of the voltage stabilization module. Long-term plugging and unplugging may cause surge high voltage on the VBUS line. The voltage stabilization module can quickly release excess energy when detecting abnormally high voltage, thereby protecting the computer's power supply system from overvoltage damage. This design not only improves the reliability of the product, but also provides a strong guarantee for safety during the production process.

[0038] Furthermore, the configuration pin CC1, the configuration pin CC2, the sideband pin SBU1, and the sideband pin SBU2 of the Type-C male connector 101 are connected to the overload protection module 105, and the configuration pin CC1, the configuration pin CC2, the sideband pin SBU1, and the sideband pin SBU2 of the Type-C female connector 102 are connected to the overload protection module 105; the differential pin TX1+, the differential pin TX1-, the differential pin TX2+, and the differential pin TX2- of the Type-C male connector 101 are connected to the differential signal stabilization module 107, and the differential pin TX1+, the differential pin TX1-, the differential pin TX2+, and the differential pin TX2- of the Type-C female connector 102 are connected to the differential signal stabilization module 107.

[0039] Please refer to Figure 4 , Figure 4 This is a circuit diagram of the first electrostatic protection module in an embodiment of the present invention. The first electrostatic protection module 103 includes: a first diode M1, a second diode M2, a third diode M3, a fourth diode M4, and a fifth diode M5; the anodes of the first diode M1, the second diode M2, and the third diode M3 are connected and grounded; the cathode of the first diode M1 is connected to the anode of the fourth diode M4, and the cathode of the second diode M2 ​​is connected to the anode of the fifth diode M5; the cathode of the fourth diode M4 is connected to the cathode of the third diode M3, and the cathode of the fifth diode M5 is connected to the cathode of the third diode M3.

[0040] Specifically, the cathode of the first diode M1 is connected to the pin of the Type-C male connector 101 , and the cathode of the second diode M2 ​​is connected to the pin of the Type-C male connector 101 .

[0041] In terms of specific connection methods, the first connection method is: the cathode of the first diode M1 is connected to the DP negative pin of the Type-C male connector 101 , and the cathode of the second diode M2 ​​is connected to the DP positive pin of the Type-C male connector 101 .

[0042] The connection can be B7 as the DP negative pin and B6 as the DP positive pin. The connection can also be A7 as the DP negative pin and A6 as the DP positive pin.

[0043] Specifically, the fifth diode M5 includes: a unidirectional TVS diode.

[0044] It should be noted that there may be two first electrostatic protection modules, with B7 connected as the DP negative pin and B6 as the DP positive pin, and A7 connected as the DP negative pin and A6 as the DP positive pin.

[0045] The second connection method is: one end of the first electrostatic protection module is connected to a configuration pin of the Type-C male connector 101 , and the other end of the first electrostatic protection module is connected to a sideband pin of the Type-C male connector 101 .

[0046] The connection can be that A5 serves as the configuration pin CC1 of the Type-C male connector 101, and B8 serves as the sideband pin SBU2. The connection can also be that B5 serves as the configuration pin CC2, and A8 serves as the sideband pin SBU1.

[0047] It should be noted that there can be four first electrostatic protection modules 103, and B7 is connected as the DP negative pin, B6 is connected as the DP positive pin, and A7 is connected as the DP negative pin, A6 is connected as the DP positive pin, A5 is connected as the configuration pin CC1, and B8 is connected as the sideband pin SBU2, and B5 is connected as the configuration pin CC2, and A8 is connected as the sideband pin SBU1.

[0048] The structure of the second electrostatic protection module 104 is the same as that of the first electrostatic protection module 103. One end of the second electrostatic protection module 104 is connected to a configuration pin of the Type-C female connector 102, and the other end of the second electrostatic protection module 104 is connected to a sideband pin of the Type-C female connector 102. One end of the second electrostatic protection module 104 is connected to the DP positive pin of the Type-C female connector 102, and the other end of the second electrostatic protection module 104 is connected to the DP negative pin of the Type-C female connector 102.

[0049] In terms of connection mode, the first electrostatic protection module 103 and the second electrostatic protection module 104 are the same, and the connection of the second electrostatic protection module can refer to the first electrostatic protection module.

[0050] Please refer to Figure 5 , Figure 5 : is a schematic diagram of a voltage stabilization module in an embodiment of the present invention. One end of the voltage stabilization module is connected to the VBUS power supply pin of the Type-C male connector 101, and the other end of the voltage stabilization module is connected to the C_VBUS power supply pin of the Type-C female connector 102.

[0051] It should be noted that the voltage stabilization module includes: KTS1675A voltage stabilizer, whose model is KineticKTS1675A overvoltage protection IC, with high current integrated n-channel mosfet, with ultra-low IN to OUT on-resistance 25 milliohms (typical), output protection voltage supply failure of low voltage system up to +28V, internal clamp at the input end protects the device from surges up to ±100V, and input voltage exceeding the overvoltage threshold will cause the internal mosfet to shut down to prevent overvoltage from damaging downstream devices.

[0052] Please refer to Figure 6 , Figure 6 Schematic diagram of an overload protection module in an embodiment of the present invention.

[0053] Please refer to Figure 7 , Figure 7 Schematic diagram of a differential signal stabilizing module in an embodiment of the present invention. The differential signal stabilizing module is respectively connected to the differential lines TX and RX of the Type-C male connector 101 , and the differential signal stabilizing module is respectively connected to the differential lines TX and RX of the Type-C female connector 102 .

[0054] In the embodiment of the utility model, a stable electrostatic protection module is connected and arranged between the male and female heads of the Type-C adapter to avoid damage to the test at the plug-in point of the male and female heads. A voltage stabilization module, an overload protection module, and a differential signal stabilization module are arranged at different pin connections of the male and female heads to avoid damage to the connected devices due to voltage fluctuations during the transfer process. This achieves a stable transmission of current and voltage during the test process of producing electronic products, and avoids damage to electronic products due to static electricity release.

[0055] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0056] In addition, although each operation is described in a specific order, this should be understood as requiring such operation to be performed in the specific order shown or in a sequential order, or requiring that all illustrated operations should be performed to obtain desired results. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation can also be implemented in multiple implementations individually or in any suitable sub-combination mode.

[0057] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A protection circuit for a Type-C adapter, characterized in that: include: Type-C male connector, Type-C female connector, first electrostatic protection module, second electrostatic protection module, voltage stabilization module, overload protection module, differential signal stabilization module; The Type-C male connector is connected to a first electrostatic protection module, and the first electrostatic protection module is used to provide electrostatic protection for the Type-C male connector. The Type-C female connector is connected to a second electrostatic protection module, and the second electrostatic protection module is used to provide electrostatic protection for the Type-C female connector. The power supply pin of the Type-C male connector is connected to the voltage stabilization module, and the power supply pin of the Type-C female connector is connected to the voltage stabilization module; The configuration pin and the sideband pin of the Type-C male connector are connected to the overload protection module, and the configuration pin and the sideband pin of the Type-C female connector are connected to the overload protection module; The differential pins of the Type-C male connector are connected to the differential signal stabilization module, and the differential pins of the Type-C female connector are connected to the differential signal stabilization module.

2. The protection circuit of the Type-C adapter according to claim 1, characterized in that: The first electrostatic protection module includes: a first diode, a second diode, a third diode, a fourth diode, and a fifth diode; Anodes of the first diode, the second diode and the third diode are connected and grounded; The cathode of the first diode is connected to the anode of the fourth diode, and the cathode of the second diode is connected to the anode of the fifth diode; The cathode of the fourth diode is connected to the cathode of the third diode, and the cathode of the fifth diode is connected to the cathode of the third diode.

3. The protection circuit of the Type-C adapter according to claim 2, characterized in that: The cathode of the first diode is connected to the pin of the Type-C male connector, and the cathode of the second diode is connected to the pin of the Type-C male connector.

4. The protection circuit of the Type-C adapter according to claim 2, characterized in that: The fifth diode includes: a unidirectional TVS diode.

5. The protection circuit of the Type-C adapter according to claim 1, characterized in that: One end of the first electrostatic protection module is connected to a configuration pin of the Type-C male connector, and the other end of the first electrostatic protection module is connected to a sideband pin of the Type-C male connector.

6. The protection circuit of the Type-C adapter according to claim 1, characterized in that: One end of the first electrostatic protection module is connected to the DP positive pin of the Type-C male connector, and the other end of the first electrostatic protection module is connected to the DP negative pin of the Type-C male connector.

7. The protection circuit of the Type-C adapter according to claim 1, characterized in that: One end of the second electrostatic protection module is connected to a configuration pin of the Type-C female connector, and the other end of the second electrostatic protection module is connected to a sideband pin of the Type-C female connector.

8. The protection circuit of the Type-C adapter according to claim 1, characterized in that: One end of the second electrostatic protection module is connected to the DP positive pin of the Type-C female connector, and the other end of the second electrostatic protection module is connected to the DP negative pin of the Type-C female connector.

9. The protection circuit of the Type-C adapter according to claim 1, characterized in that: The voltage stabilization module includes: a KTS1675A voltage stabilizer.

10. The protection circuit of the Type-C adapter according to claim 1, characterized in that: The differential signal stabilization module includes: RClamp0524P voltage stabilizer.

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