Circuit for controlling rotating speed of fan by reading chip temperature through graphics card slot

Abstract

The utility model relates to a graphics card slot reading chip temperature control fan rotating speed circuit, which comprises a slot chip and an SIO chip module, the slot chip is provided with a plurality of reserved pins, the plurality of reserved pins are defined as graphics card pins for correspondingly transmitting temperature signals of various graphics cards, and the SIO chip module is provided with a plurality of temperature sensors. The plurality of display card pins are all connected with the SIO chip module, the SIO chip module is used for receiving a display card temperature signal and controlling the rotating speed of a heat dissipation fan, and the display card slot transmits the temperature signal of the temperature sensor to the SIO chip module through the reserved pins on the slot chip, so that the fan is adjusted through the SIO chip module according to the real-time temperature, and the heat dissipation efficiency is improved. According to the display card slot, the heat dissipation efficiency and noise are balanced, and the display card slot can transmit temperature signals of various display cards through a plurality of reserved pins, so that the display card slot is compatible with various different types of display cards, and the different types of display cards can work under the same MXM standard.

Description

Technical Field

[0001] This utility model relates to the field of temperature control circuits, and more specifically, to a circuit for controlling fan speed by reading chip temperature in a graphics card slot. Background Technology

[0002] MXM (standardized mobile graphics card) slot graphics cards are widely used in high-performance computers and have become a market standard. In conventional MXM graphics card applications, the cooling module (especially the cooling fan) and the MXM graphics card are integrated. The MXM graphics card has a built-in temperature sensor to monitor the temperature of the graphics chip and transmits the temperature signal to the system chip through the designated pins of the MXM slot. However, there are some limitations in practical applications. There are different types of graphics cards, and the MXM slot cannot be compatible with the temperature signal transmission of different types of graphics cards. Utility Model Content

[0003] To address the aforementioned shortcomings of existing technologies, a circuit is provided for controlling fan speed by reading the chip temperature in a graphics card slot.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a circuit for reading chip temperature and controlling fan speed in a graphics card slot, including a slot chip and an SIO chip module. The slot chip is provided with multiple reserved pins, which are defined as graphics card pins for transmitting temperature signals of various graphics cards. The graphics card pins are all connected to the SIO chip module, which is used to receive graphics card temperature signals and control the speed of the cooling fan.

[0005] Preferably, the graphics card is one of three types: NVIDIA, AMD, and Intel, and the graphics card also has three pins.

[0006] Preferably, the three graphics card pins are 38-pin, 40-pin, and 28-pin. The 38-pin pin is defined as OEM_38, which transmits the temperature signal of the NVIDIA graphics card; the 40-pin pin is defined as OEM_40, which transmits the temperature signal of the AMD graphics card; and the 28-pin pin is defined as GPIO1_28, which transmits the temperature signal of the Intel graphics card. All three pins, OEM_38, OEM_40, and GPIO1_28, are connected to the SIO chip module.

[0007] Preferably, pin OEM_38 is connected to capacitors C3 and C19. Pin OEM_38 is connected to the positive terminal of capacitor C3, the negative terminal of capacitor C3 is connected to pin OEM_40, pin OEM_38 is connected to the negative terminal of capacitor C19, the positive terminal of capacitor C19 is connected to pin OEM_40, the positive terminal of capacitor C19 is also grounded, and pin OEM_38 is also connected to the SIO chip module.

[0008] Preferably, pin GPIO1_28 is connected to MOSFET Q2 and resistor R10. Pin GPIO1_28 is connected to the source of MOSFET Q2, the gate of MOSFET Q2 is connected to an external power supply, the drain of MOSFET Q2 is connected to resistor R52, resistor R10 is also connected to resistor R52, resistor R52 is connected to the SIO chip module, and resistor R52 is also connected in parallel with resistor R51, which is connected to the main PECI interface of the external motherboard.

[0009] The beneficial effects of this utility model are as follows: This graphics card slot transmits temperature signals from a temperature sensor to the SIO chip module through reserved pins on the slot chip, thereby monitoring temperature changes on the graphics card chip. This allows the motherboard to obtain the core temperature of the graphics card chip, and then control the speed of the cooling fan through the SIO chip module. The fan is adjusted according to the real-time temperature to balance cooling efficiency and noise. Furthermore, the multiple reserved pins allow this graphics card slot to transmit temperature signals from various graphics cards, making it compatible with a variety of different types of graphics cards. All different types of graphics cards can work under the same MXM standard. Attached Figure Description

[0010] Figure 1 This is a circuit diagram of the slot chip according to an embodiment of the present invention;

[0011] Figure 2 This is a circuit diagram of the connection module for connecting the slot chip to the SIO chip according to an embodiment of this utility model;

[0012] Figure 3 This is a circuit diagram of the SIO chip module according to an embodiment of the present invention. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In addition, the directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. The directional terms are used to better and more clearly explain and understand this utility model, and are not intended to indicate or imply the necessary orientation of this utility model. Therefore, they should not be construed as limitations on this utility model.

[0014] Examples of embodiments of this utility model Figures 1 to 3 As shown, a circuit for reading chip temperature and controlling fan speed in a graphics card slot includes a slot chip and an SIO chip module. The slot chip has multiple reserved pins, which are defined as graphics card pins for transmitting temperature signals from various graphics cards. All graphics card pins are connected to the SIO chip module. The SIO chip module is used to receive the graphics card temperature signal and control the speed of the cooling fan. The SIO chip module is also responsible for parsing the temperature signal from the graphics card and converting it into a recognizable temperature value.

[0015] This graphics card slot transmits temperature signals from a temperature sensor to the SIO chip module via reserved pins on the slot chip. This allows the motherboard to monitor temperature changes on the graphics card chip, enabling it to obtain the core temperature of the graphics card chip. The SIO chip module then controls the fan speed for cooling, adjusting the fan speed based on real-time temperature to balance cooling efficiency and noise. Furthermore, the multiple reserved pins allow this graphics card slot to transmit temperature signals from various graphics cards, making it compatible with a wide range of different types of graphics cards. All different types of graphics cards can operate under the same MXM standard.

[0016] Further improvements, such as Figure 1 and Figure 3 As shown, there are three types of graphics cards: NVIDIA, AMD, and Intel. The graphics card also has three pins.

[0017] Further improvements, such as Figure 1 and Figure 3As shown, the three graphics card pins are 38-pin, 40-pin, and 28-pin. The 38-pin pin is defined as OEM_38, which transmits the temperature signal of the NVIDIA graphics card. The 40-pin pin is defined as OEM_40, which transmits the temperature signal of the AMD graphics card. The 28-pin pin is defined as GPIO1_28, which transmits the temperature signal of the Intel graphics card. Pins OEM_38, OEM_40, and GPIO1_28 are all connected to the SIO chip module.

[0018] Further improvements, such as Figures 1 to 3 As shown, pin OEM_38 is connected to capacitors C3 and C19. Pin OEM_38 is connected to the positive terminal of capacitor C3, and the negative terminal of capacitor C3 is connected to pin OEM_40. Pin OEM_38 is connected to the negative terminal of capacitor C19, and the positive terminal of capacitor C19 is connected to pin OEM_40. The positive terminal of capacitor C19 is also grounded. Pin OEM_38 is also connected to the SIO chip module. Capacitor C19 filters out high-frequency interference on the signal line, ensuring that the temperature signal transmitted to the SIO chip module is clean and stable.

[0019] Further improvements, such as Figure 1 and Figure 3 As shown, pin GPIO1_28 is connected to MOSFET Q2 and resistor R10. Pin GPIO1_28 is connected to the source of MOSFET Q2, and the gate of MOSFET Q2 is connected to an external power supply. Resistor R52 is connected to the drain of MOSFET Q2, and resistor R10 is also connected to resistor R52. Resistor R52 is connected to the SIO chip module. Resistor R52 is also connected in parallel with resistor R51, and resistor R51 is connected to the main PECI interface of the external motherboard.

[0020] The above circuitry allows this graphics card slot to be compatible with NVIDIA, AMD, and Intel graphics cards. Furthermore, this graphics card slot uses reserved pins, which do not affect the functionality of other pins.

[0021] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A circuit for controlling fan speed by reading the temperature of a graphics card slot chip, comprising a slot chip and an SIO chip module; characterized in that, The slot chip has multiple reserved pins; these reserved pins are defined as graphics card pins for transmitting temperature signals from various graphics cards; these graphics card pins are all connected to the SIO chip module; the SIO chip module is used to receive the graphics card temperature signals and control the speed of the cooling fan.

2. The circuit for controlling fan speed by reading chip temperature in a graphics card slot according to claim 1, characterized in that, The graphics card is one of three types: NVIDIA, AMD, and Intel; and the graphics card also has three pins.

3. The circuit for controlling fan speed by reading chip temperature in a graphics card slot according to claim 2, characterized in that, The three graphics card pins are 38-pin, 40-pin, and 28-pin; the 38-pin pin is defined as OEM_38, which transmits the temperature signal of the NVIDIA graphics card; the 40-pin pin is defined as OEM_40, which transmits the temperature signal of the AMD graphics card; and the 28-pin pin is defined as GPIO1_28, which transmits the temperature signal of the Intel graphics card. All three pins, OEM_38, OEM_40, and GPIO1_28, are connected to the SIO chip module.

4. The circuit for controlling fan speed by reading chip temperature in a graphics card slot according to claim 3, characterized in that, Pin OEM_38 is connected to capacitors C3 and C19; pin OEM_38 is connected to the positive terminal of capacitor C3; the negative terminal of capacitor C3 is connected to pin OEM_40; pin OEM_38 is connected to the negative terminal of capacitor C19; the positive terminal of capacitor C19 is connected to pin OEM_40; the positive terminal of capacitor C19 is also grounded; pin OEM_38 is also connected to the SIO chip module.

5. The circuit for controlling fan speed by reading chip temperature in a graphics card slot according to claim 3, characterized in that, The GPIO1_28 pin is connected to MOSFET Q2 and resistor R10; the GPIO1_28 pin is connected to the source of MOSFET Q2; the gate of MOSFET Q2 is connected to an external power supply; the drain of MOSFET Q2 is connected to resistor R52; resistor R10 is also connected to resistor R52; resistor R52 is connected to the SIO chip module; resistor R52 is also connected in parallel with resistor R51; resistor R51 is connected to the main PECI interface of the external motherboard.

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