Control circuit for low-temperature starting of chip
By designing a control circuit for low-temperature start of chips, using heating circuits to transfer heat to CPU chips, the problems of high cost, poor versatility and high circuit complexity in the prior art are solved, and the CPU chips are realized under low-temperature environments efficient start-up and stable operation.
Patent Information
- Application Number
- CN202421452248.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-24
AI Technical Summary
When solving the problem of low-temperature startup of CPU chips, the prior art has problems such as high cost, poor versatility and high circuit complexity.
A control circuit for low-temperature start of the chip is designed, including a power supply, heating resistor and load resistor, through which heat is transferred to the CPU chip until the start-up temperature is reached. This circuit does not require an external temperature sensor, and the heating and startup process is automatically completed by the internal mechanism of the CPU chip.
It effectively avoids the risks of CPU chip being unable to start, performance degraded, shortened life or even damaged due to too low temperature, reduces the overall power consumption of the system, and improves the reliability and stability of the equipment.
Smart Images
Figure CN222529693U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit design, in particular to a control circuit for low-temperature starting of a chip. Background Art
[0002] At present, the operating temperatures of different types of CPU chips are different. If the working environment temperature of the CPU chip exceeds the working range of the CPU chip, the CPU chip cannot be started or even damaged. In a low temperature environment, the modules inside the CPU chip may not work properly, resulting in the problem of being unable to start the CPU chip.
[0003] In order to solve the problem of low-temperature startup of CPU chips, the existing methods are as follows: Method 1, by adopting a special process to obtain a wide-temperature chip, the temperature range of the CPU chip is expanded; Method 2, by charging and heating certain chips through their specific pins, thereby solving the problem of low-temperature startup of the CPU chip; Method 3, by using an external temperature sensor to read the temperature of the CPU chip; starting the heating device according to the temperature of the CPU chip, thereby solving the problem of low-temperature startup of the CPU chip.
[0004] Regarding the above-mentioned related technologies, there are the following problems: the manufacturing cost of the wide-temperature chip in method 1 is relatively high; method 2 is only applicable to certain specific chips and has poor versatility; method 3 requires an additional temperature sensor, which increases the complexity and cost of the circuit. Utility Model Content
[0005] The utility model aims at the deficiencies in the prior art and provides a control circuit for low-temperature starting of a chip.
[0006] The technical solution of the utility model to solve the above technical problems is as follows:
[0007] A control circuit for low-temperature startup of a chip comprises a power supply, a heating resistor and a load resistor. The heating resistor is located on one side of a CPU chip. The heating resistor and the load resistor are connected in series to form a heating circuit for heating the CPU chip. When the temperature of the CPU chip reaches the startup temperature, the CPU chip starts.
[0008] By adopting the above technical solution, when the device is powered on in a low temperature environment, the CPU chip may not be able to start immediately due to the low ambient temperature. At this time, the heating circuit starts to work, and the heating resistor generates heat through the current, transferring the heat to the CPU chip. As time goes by, the temperature of the CPU chip gradually increases. The heating circuit enables the CPU chip to reach a suitable operating temperature before starting, thereby avoiding the risk of the CPU chip failing to start, performance degradation, shortened life, or even damage due to too low a temperature. The entire heating and startup process is completely completed automatically by the internal mechanism of the CPU chip, which improves the automation and ease of use of the device.
[0009] Furthermore, a transistor is connected in parallel at both ends of the heating resistor, and the collector and emitter of the transistor are respectively located at both ends of the heating resistor. After the CPU chip is started, the transistor is turned on, so that the heating resistor R1 is short-circuited and no longer consumes power to generate heat.
[0010] By adopting the above technical solution, once the CPU chip starts and controls the transistor to turn on, the heating resistor is short-circuited and no longer consumes electricity to generate heat. This significantly reduces the overall power consumption of the system, especially when the equipment runs for a long time or needs to be started frequently, the energy saving effect is more significant. Since the heating resistor no longer works continuously, its life is extended. This reduces the risk of equipment failure due to resistor damage and improves the reliability and stability of the equipment.
[0011] Furthermore, the base of the transistor is connected to the CPU chip via an I / O control pin, and the CPU chip issues instructions via the I / O control pin to control the transistor to open.
[0012] Furthermore, the CPU chip is connected to a power supply.
[0013] In summary, compared with the prior art, the above technical solution has the following beneficial effects:
[0014] The control circuit for low-temperature startup of a chip described in the utility model has strong versatility and does not require a specific chip type; it does not require a temperature sensor to obtain the ambient temperature, which reduces the complexity and cost of the circuit; the circuit is simple, the cost is low, and the control logic is simple, which reduces the cost and threshold of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a module block diagram of the utility model. DETAILED DESCRIPTION
[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0017] The utility model embodiment discloses a control circuit for low temperature startup of a chip.
[0018] Reference Figure 1 A control circuit for low-temperature startup of a chip, comprising a power supply VCC, a heating resistor R1 and a load resistor R2, wherein a CPU chip is connected to the power supply VCC, the power supply VCC, the load resistor R2 and the heating resistor R1 are sequentially connected in series, one end of the heating resistor R1 away from the load resistor R2 is grounded, the heating resistor R1 and the load resistor R2 form a heating circuit, the heating resistor R1 is located on one side of the CPU chip, and is used to heat the CPU chip, and when the temperature of the CPU chip reaches the startup temperature, the CPU chip starts.
[0019] The heating resistor R1 is located on one side of the CPU chip and is used to increase the temperature of the CPU chip. The load resistor R2 is connected in series with the heating resistor R1 to form a heating circuit. The load resistor R2 may be used to adjust the current and voltage in the circuit to ensure that the heating resistor R1 operates within a safe and effective range. The resistance of the heating resistor R1 is between 1000-2000 ohms, and the resistance of the load resistor R2 is between 500 ohms and 1000 ohms. In this embodiment, the resistance ratio of the heating resistor R1 to the load resistor R2 is 2:1 or 3:1.
[0020] When the device is powered on in a low temperature environment, the CPU chip may not start immediately due to the low ambient temperature. At this time, the heating circuit starts to work, and the heating resistor R1 generates heat through the current, transferring the heat to the CPU chip. Over time, the temperature of the CPU chip gradually increases.
[0021] The CPU chip contains a temperature detection circuit for real-time monitoring of the temperature of the chip. The temperature detection circuit is a prior art and will not be described in detail here. When the temperature of the CPU chip reaches the preset startup temperature, the temperature detection circuit sends a signal to the CPU startup logic. After receiving this signal, the CPU startup logic will perform initialization operations according to the predetermined process, such as checking the hardware status, loading the operating system, etc., to ensure that the CPU chip can start normally.
[0022] The heating circuit composed of heating resistor R1 and load resistor R2 can effectively improve the startup success rate of the CPU chip in a low temperature environment. The heating circuit ensures that the CPU chip reaches a suitable operating temperature before startup, thereby avoiding the risk of the CPU chip failing to start, performance degradation, shortened life, or even damage due to low temperature. The entire heating and startup process does not require additional external input and logical judgment, and is completely completed automatically by the CPU internal mechanism, which improves the automation and ease of use of the equipment.
[0023] A transistor V1 is connected in parallel at both ends of the heating resistor R1, and the collector and emitter of the transistor V1 are respectively located at both ends of the heating resistor R1. After the CPU chip is started, the transistor V1 is turned on, so that the heating resistor R1 is short-circuited and no longer consumes power to generate heat. The load resistor R2 will continue to generate heat, but the heat generated is very small, and is mainly used to prevent the transistor V1 from being broken down and protect the transistor V1.
[0024] Once the CPU chip starts and controls transistor V1 to turn on, the heating resistor R1 is short-circuited and no longer consumes electricity to generate heat. This significantly reduces the overall power consumption of the system, especially when the equipment runs for a long time or needs to be started frequently, the energy saving effect is more significant. Since the heating resistor R1 no longer works continuously, its life is extended. This reduces the risk of equipment failure due to resistor damage and improves the reliability and stability of the equipment.
[0025] The CPU chip can precisely control the working state of the heating resistor R1 by controlling the opening and closing of the transistor V1, thereby achieving precise control of the temperature around the CPU chip. This helps ensure that the CPU chip operates within the optimal temperature range, improving performance and stability. When the CPU chip is started, if the heating resistor R1 continues to work, it may cause the CPU chip to overheat. By connecting the transistor V1 in parallel and turning it on after the CPU chip is started, this situation can be effectively avoided and the CPU chip can be protected from overheating damage.
[0026] The entire heating and temperature control process is automatically completed by the CPU chip without external intervention or manual operation. This improves the automation of the equipment and reduces the possibility of human error. The CPU chip can intelligently adjust the working state of the heating resistor R1 based on the temperature information monitored in real time. This intelligent management helps to achieve more efficient and accurate temperature control.
[0027] The base of the transistor V1 is connected to the CPU chip through the I / O control pin, and the CPU chip issues an instruction through the I / O control pin to control the transistor V1 to turn on. After the CPU chip is started and reaches the normal working temperature, an instruction is issued through the I / O control pin to control the transistor V1 to turn on, and the heating resistor R1 is short-circuited, thereby stopping the heat generation. The I / O control pin of the CPU chip is utilized, and no additional control circuit or logic circuit is required, which simplifies the circuit design and reduces the cost.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A control circuit for low temperature startup of a chip, characterized in that: include: A power supply, a heating resistor and a load resistor, wherein the heating resistor is located on one side of the CPU chip, and the heating resistor and the load resistor are connected in series to form a heating circuit for heating the CPU chip. When the temperature of the CPU chip reaches the starting temperature, the CPU chip starts.
2. A control circuit for low temperature startup of a chip according to claim 1, characterized in that: A transistor is connected in parallel at both ends of the heating resistor, and the collector and emitter of the transistor are respectively located at the two ends of the heating resistor. After the CPU chip is started, the transistor is turned on, so that the heating resistor R1 is short-circuited and no longer consumes power to generate heat.
3. A control circuit for low temperature startup of a chip according to claim 2, characterized in that: The base of the transistor is connected to the CPU chip via an I / O control pin, and the CPU chip sends instructions via the I / O control pin to control the transistor to turn on.
4. The control circuit for low temperature startup of a chip according to claim 1, characterized in that: The CPU chip is connected to a power source.