U.2 PCIE to M.2 PCIE adapter plate
By designing a U.2 PCIe to M.2 PCIe adapter board, the incompatibility between U.2 and M.2 interfaces was solved, meeting the voltage requirements and operational convenience of enterprise-level solid-state drives, reducing production costs and improving the utilization rate of testing equipment.
Patent Information
- Application Number
- CN202422869984.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing technologies cannot directly test enterprise-grade solid-state drives with U.2 interfaces. Furthermore, the M.2 and U.2 interfaces differ in voltage requirements, insertion and removal methods, and physical structures, resulting in low utilization of testing equipment, high costs, and inconvenient operation.
Design a U.2 PCIe to M.2 PCIe adapter board, which adopts a circuit board structure and includes a U.2 female connector, an M.2 M-key gold finger interface, a DC12V interface, a 2P header, and a step-down circuit to achieve compatibility between U.2 and M.2 interfaces. The DC12V to DC5V step-down circuit meets the voltage requirements of enterprise-level solid-state drives. At the same time, a rugged design and heat dissipation structure are adopted to improve reliability and convenience.
It achieves compatibility between U.2 and M.2 interfaces, meets the voltage requirements of enterprise-level solid-state drives, avoids connector damage, reduces production costs, and improves the utilization rate and ease of operation of testing equipment.
Smart Images
Figure CN223514379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adapter board technology, specifically to a U.2 PCIE to M.2 PCIE adapter board. Background Technology
[0002] With the rapid development of information technology, enterprise solid state drives (ESSDs) have become indispensable storage components in data centers, servers, the internet, cloud services, smart manufacturing, and high-performance computing. These SSDs not only bear the heavy responsibility of data storage but are also highly favored due to their stringent requirements for data integrity and security. Enterprise SSDs effectively meet the long-term, high-intensity read / write needs of enterprises by providing data encryption, extended write endurance, and ensuring high, stable, and balanced continuous input / output (I / O) performance. Furthermore, they can operate stably under heavy write workloads and extreme environmental conditions and have abnormal power failure protection mechanisms, further enhancing data security and reliability.
[0003] In terms of capacity, enterprise-grade SSDs typically start at 4TB (3.84GB), with some products exceeding 32TB per drive, far surpassing the specifications of ordinary consumer-grade SSDs. However, this high performance and large capacity also bring higher power consumption requirements. Enterprise-grade SSDs place extremely high demands on power supply, generally employing dual-voltage power supplies of DC 5V and DC 12V to ensure stable operation.
[0004] Regarding interfaces, the U.2 interface (SFF-8639) commonly used in enterprise-grade SSDs supports both PCIe x4 and SATA protocols. However, the PCIe x4 U.2 interface requires a dedicated interface for connection testing. Currently, the widely available M.2 PCIe interface testing equipment cannot be directly used for production testing of U.2 PCIe interface enterprise-grade SSDs. This situation not only limits the utilization rate of testing equipment but also increases production costs for enterprises.
[0005] Furthermore, the U.2 and M.2 interfaces differ significantly in physical structure, voltage requirements, and insertion / removal methods. The M.2 interface, a common consumer-grade solid-state drive (SSD) interface, features a simple design without a casing, making it suitable for angled, downward insertion / removal. In contrast, enterprise-grade U.2 SSDs, with their added weight due to the heat-dissipating casing, are unsuitable for angled, downward, or horizontal insertion / removal, as this could damage the connector. Additionally, the M.2 interface only supports DC 3.3V, while enterprise-grade SSDs utilize both DC 12V and DC 5V power supplies, posing a challenge to their compatibility.
[0006] Therefore, designing an adapter board that can solve the incompatibility problem between U.2 and M.2 interfaces, meet the high voltage requirements of enterprise-level solid-state drives, and take into account ease of operation, low cost, and high reliability has become an urgent technical challenge. Utility Model Content
[0007] To overcome the shortcomings of existing technologies, this application provides a U.2 PCIe to M.2 PCIe adapter board, which aims to solve the incompatibility problem between U.2 and M.2 interfaces, while meeting the high voltage requirements of enterprise-level solid-state drives and taking into account ease of operation, low cost and high reliability.
[0008] The technical means adopted by this utility model to solve its technical problem is: a U.2 PCIe to M.2 PCIe adapter board, including a circuit board as the main body of the adapter board, characterized in that the circuit board is provided with a U.2 female connector, an M.2 M-key gold finger interface, a DC12V interface, a 2P header, and a step-down circuit, wherein the U.2 female connector is arranged perpendicular to the circuit board near the side of the circuit board, and is used to connect an enterprise-level solid-state drive with a U.2 PCIe interface and provide power voltage to the enterprise-level solid-state drive; the M.2 M-key gold finger interface is arranged at one end of the circuit board, and a screw mounting slot is provided at the other end of the circuit board; the circuit board is located near the M.2... The M-key gold finger interface is equipped with the DC12V interface, which provides DC12V power to the adapter board through an external industrial power supply; the 2P pin header is located on the center side of the top surface of the circuit board, and the 2P pin header is connected to the DC12V interface through a jumper cap; the step-down circuit is located on the top surface of the circuit board near the 2P pin header, which is used to provide DC5V power voltage to the U.2 female connector.
[0009] The step-down circuit described in the above technical solution is a DC12V to DC5V step-down circuit, including chip U1, capacitors CS1, CX1, C15, CB1, CF1, inductor L1, resistors RA1, RB1, CX2, CS2, and TVS diode D1. One end of capacitors CS1 and CX1 is connected to the DC12V power supply and pin 5 of chip U1, while the other end of capacitors CS1 and CX1 is grounded and connected to pin 7 of chip U1. One end of capacitor C15 is connected to chip U1... Pin 2 of chip U1, the other end of capacitor C15, and pin 8 of chip U1 are grounded; pin 3 of chip U1 is connected to one end of capacitor CB1, the other end of capacitor CB1 is connected to pin 4 of chip U1 and one end of inductor L1, the other end of inductor L1 is grounded through capacitor CX2, capacitor CS2 and TVS diode D1 respectively; the other end of inductor L1 is also connected to pin 4 of chip U1 through capacitor CF1, and the other end of inductor L1 is also connected to the GND pin of chip U1 through resistor RA1 and resistor RB1.
[0010] The circuit board mentioned in the above technical solution is a PCB board.
[0011] In the above technical solution, the chip U1 in the step-down circuit is a high-efficiency, low-heat DC-DC converter chip, and the chip has overcurrent protection, short-circuit protection and overheat protection functions.
[0012] The circuit board surface described in the above technical solution is treated with anti-static coating to effectively prevent potential damage to the adapter board and its connected storage devices caused by electrostatic discharge, thereby improving the reliability and service life of the product.
[0013] The U.2 female connector described in the above technical solution adopts a reinforced design between itself and the circuit board, including but not limited to metal brackets or reinforcing adhesive for fixation.
[0014] The circuit board described in the above technical solution is also equipped with an indicator light or LED display unit to indicate the power status, data transmission status or fault warning, thereby improving the convenience of user operation and the efficiency of fault diagnosis.
[0015] The adapter board described in the above technical solution is also designed with a heat dissipation structure, including but not limited to heat sinks, heat dissipation holes or heat pipes, to effectively dissipate the heat generated during operation and ensure the safe operation of the adapter board and its connected equipment.
[0016] The beneficial effects of this utility model are:
[0017] ① By using a circuit board with the same structural dimensions as the M.2 2280 and a vertically mounted U.2 female connector, the oblique insertion or horizontal insertion method is converted into vertical insertion, so that the weight of the U.2 enterprise-grade solid-state drive is converted into vertical force, avoiding horizontal tilt and error that could damage the connector;
[0018] ② By using an external DC12V power supply and a DC12V to DC5V step-down circuit, the problem of dual-voltage power supply of DC5V and DC12V is solved. At the same time, a TVS diode is added to protect the circuit from damage caused by instantaneous overvoltage.
[0019] ③ It adopts the M.2 2280 solid-state drive board form factor and screw fixing method, and is compatible with traditional M.2 PCIe test fixtures. By installing an adapter board, it can test U.2 PCIe enterprise-level solid-state drives and improve equipment utilization. Attached Figure Description
[0020] Figure 1 The image shows a front view of a U.2 PCIe to M.2 PCIe adapter board according to an embodiment of the present invention;
[0021] Figure 2 This is a side view of a U.2 PCIe to M.2 PCIe adapter board shown in an embodiment of the present invention;
[0022] Figure 3 This is a structural diagram of a step-down circuit shown in an embodiment of the present invention. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0025] like Figure 1-2As shown, this utility model provides a U.2 PCIe to M.2 PCIe adapter board, including a circuit board 1 as the main body of the adapter board. The circuit board 1 is provided with a U.2 female connector 2, an M.2 M-key gold finger interface 3, a DC12V interface 4, a 2P pin header 5, and a step-down circuit 6.
[0026] In one possible implementation, the circuit board 1 is a PCB board, and the U.2 female connector 2 and the M.2 M-key gold finger interface 3 are connected by on-board wiring.
[0027] The U.2 female connector 2 is positioned perpendicular to the side of the circuit board 1 near the circuit board 1, and is used to connect to the enterprise-grade solid-state drive with the U.2 PCIe interface and provide power voltage to the enterprise-grade solid-state drive;
[0028] In one possible implementation, the U.2 female connector 2 and the circuit board 1 are reinforced with a design including, but not limited to, metal brackets or reinforcing adhesive.
[0029] The M.2 M-key gold finger interface 3 is located at one end of the circuit board 1, and the other end of the circuit board 1 is provided with a screw mounting plate groove 11;
[0030] The circuit board 1 is provided with the DC12V interface 4 near the M.2 M-key gold finger interface 3, and the adapter board is provided with DC12V power through an external industrial power supply.
[0031] The 2P pin header 5 is provided on the center side of the top surface of the circuit board 1, and the 2P pin header 5 is connected to the DC12V interface through a jumper cap.
[0032] The step-down circuit 6 is located on the top surface of the circuit board 1 near the 2P pin header 5, and is used to provide a DC 5V power supply voltage to the U.2 female connector 2.
[0033] The 2P header 5 is located near the step-down circuit and together with the step-down circuit, it is located on the other side of the circuit, away from the U.2 female connector, to avoid structural interference with the U.2 enterprise-grade solid-state drive and affecting operation. The adapter board adopts a single-sided component structure layout to avoid structural interference between the bottom components and the test fixture.
[0034] The technical solution of this utility model involves designing an adapter board in the shape of an M.2 SSD. The M.2 M-Key female connector of the test fixture is installed using either a slanted downward insertion or a horizontal insertion / removal method. It is then fixed to the test fixture using screws and screw mounting slots at the rear of the adapter board. The adapter board employs a vertically mounted U.2 female connector, transforming the original slanted downward insertion or horizontal insertion / removal method into a vertical vertical insertion / removal method. This converts the weight of the U.2 enterprise-grade solid-state drive into a vertical force, avoiding horizontal tilt and errors that could damage the connector.
[0035] Since small and medium capacity U.2 enterprise-grade solid-state drives primarily use DC 5V power supply, while large capacity drives use DC 12V power supply, this technical solution directly disconnects the original M.2 interface's DC 3.3V and provides DC 12V power through an external DC 12V industrial power supply. A DC 12V to DC 5V step-down circuit is then used to provide DC 5V power, creating a dual-voltage power supply from DC 12V to DC 5V. Additionally, a jumper header is provided for DC 12V; after disconnecting the header, instruments such as ammeters, oscilloscopes, or multimeters can be connected to test current and other data.
[0036] In one possible implementation, such as Figure 3 As shown, the step-down circuit is a DC12V to DC5V step-down circuit, including chip U1, capacitors CS1, CX1, C15, CB1, CF1, inductor L1, resistors RA1, RB1, capacitors CX2, CS2, and diode D1.
[0037] One end of capacitors CS1 and CX1 is connected to the DC12V power supply and pin 5 of chip U1, and the other end of capacitors CS1 and CX1 is grounded and connected to pin 7 of chip U1.
[0038] One end of the capacitor C15 is connected to pin 2 of the chip U1, and the other end of the capacitor C15 and pin 8 of the chip U1 are grounded.
[0039] The third pin of the chip U1 is connected to one end of the capacitor CB1, and the other end of the capacitor CB1 is connected to the fourth pin of the chip U1 and one end of the inductor L1. The other end of the inductor L1 is grounded through the capacitor CX2, the capacitor CS2 and the diode D1 respectively.
[0040] The other end of the inductor L1 is also connected to the fourth pin of the chip U1 through the capacitor CF1, and the other end of the inductor L1 is also connected to the GND pin of the chip U1 through the resistors RA1 and RB1.
[0041] In one possible implementation, the chip U1 in the step-down circuit is a high-efficiency, low-heat DC-DC converter chip, and the chip has overcurrent protection, short-circuit protection and overheat protection functions.
[0042] Optionally, the chip U1 uses an MT3901 switching power supply chip. The external DC 12V power supply is input from pin 5 and output from pin 4 of U1 through capacitors CS1 (to filter high-frequency noise) and CX1 (to filter low-frequency noise). The capacitor CS1 is used to filter high-frequency noise, and the capacitor CX1 is used to filter low-frequency noise. Then, the inductor L1 stores and converts energy to output a linear and stable DC power supply. Finally, capacitors CX2 (to filter low-frequency noise) and CS2 (to filter high-frequency noise) provide a stable DC 5V power output.
[0043] Meanwhile, pin 1 of chip U1 receives a feedback signal. Through the pull-up signal of resistor RA1 and the pull-down signal of RB1, feedback information is obtained to control the operating frequency of chip U1 and adjust the output voltage of pin 4 of chip U1. Among them, diode D1 is a TVS (transient voltage suppressor diode) diode, which is used to protect the circuit from damage caused by instantaneous overvoltage.
[0044] In one possible implementation, the surface of the adapter board is treated with an anti-static coating to effectively prevent potential damage to the adapter board and the connected storage devices caused by electrostatic discharge, thereby improving the reliability and service life of the product.
[0045] In one possible implementation, the circuit board is further provided with an indicator light or LED display unit to indicate the power status, data transmission status, or fault warning, thereby improving the convenience of user operation and the efficiency of fault diagnosis.
[0046] In one possible implementation, the adapter board is also designed with a heat dissipation structure, including but not limited to heat sinks, heat dissipation holes or heat pipes, to effectively dissipate the heat generated during operation and ensure the safe operation of the adapter board and its connected devices.
[0047] Through the above embodiments, this utility model can test enterprise-grade solid-state drives with PCIe x4 protocol U.2 interface without adding dedicated equipment, improving the uptime and value of the test platform and equipment; at the same time, it has a simple structure, low cost and high reliability, making it suitable for industrial applications and reducing enterprise-level production testing costs.
[0048] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A U.2 PCIe to M.2 PCIe adapter board, comprising a circuit board as the main body of the adapter board, characterized in that, The circuit board is equipped with a U.2 female connector, an M.2 M-key gold finger interface, a DC12V interface, a 2P pin header, and a step-down circuit. The U.2 female connector is positioned perpendicular to the circuit board on the side closest to the circuit board and is used to connect to an enterprise-grade solid-state drive with a U.2 PCIe interface and to provide power voltage to the enterprise-grade solid-state drive. The M.2M-key gold finger interface is located at one end of the circuit board, and a screw mounting slot is provided at the other end of the circuit board; The circuit board has a DC12V interface near the M.2M-key gold finger interface, and an external industrial power supply provides DC12V power to the adapter board. The 2P header is provided on the center side of the top surface of the circuit board, and the 2P header is connected to the DC12V interface through a jumper cap; The step-down circuit is located on the top surface of the circuit board near the 2P header, and is used to provide a DC 5V power supply voltage to the U.2 female connector.
2. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The step-down circuit is a DC12V to DC5V step-down circuit, including chip U1, capacitors CS1, CX1, C15, CB1, CF1, inductor L1, resistors RA1, RB1, capacitors CX2, CS2, and TVS diode D1. One end of capacitors CS1 and CX1 is connected to the DC12V power supply and pin 5 of chip U1, and the other end of capacitors CS1 and CX1 is grounded and connected to pin 7 of chip U1. One end of the capacitor C15 is connected to pin 2 of the chip U1, and the other end of the capacitor C15 and pin 8 of the chip U1 are grounded. The third pin of the chip U1 is connected to one end of the capacitor CB1, and the other end of the capacitor CB1 is connected to the fourth pin of the chip U1 and one end of the inductor L1. The other end of the inductor L1 is grounded through the capacitor CX2, the capacitor CS2 and the TVS diode D1 respectively. The other end of the inductor L1 is also connected to the fourth pin of the chip U1 through the capacitor CF1, and the other end of the inductor L1 is also connected to the GND pin of the chip U1 through the resistors RA1 and RB1.
3. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The circuit board is a PCB board.
4. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The chip U1 in the step-down circuit is a high-efficiency, low-heat DC-DC converter chip, and the chip has overcurrent protection, short-circuit protection and overheat protection functions.
5. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The circuit board surface is treated with anti-static coating to effectively prevent potential damage to the adapter board and its connected storage devices caused by electrostatic discharge, thereby improving the reliability and service life of the product.
6. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The U.2 female connector is reinforced with a design that includes, but is not limited to, a metal bracket or reinforcing adhesive.
7. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The circuit board is also equipped with indicator lights or LED display units to indicate power status, data transmission status or fault warnings, thereby improving the convenience of user operation and the efficiency of fault diagnosis.
8. The U.2 PCIe to M.2 PCIe adapter board according to claim 1, characterized in that, The adapter board is also designed with a heat dissipation structure, including but not limited to heat sinks, heat dissipation holes or heat pipes, to effectively dissipate the heat generated during operation and ensure the safe operation of the adapter board and its connected equipment.