Voltage supply circuit of the pre-driver module of the arithmetic chip and computing power board

Abstract

The embodiments of the present invention propose a voltage supply circuit and a computing power board for a pre-drive module of an arithmetic chip. The voltage supply circuit includes: a resistor, the first end of the resistor is connected to a power supply; a diode, the positive electrode of the diode is connected to the second end of the resistor, and the negative electrode of the diode is connected to a reference ground; a voltage supply terminal, connected to the positive electrode of the diode, and adapted to be connected to the first end of the pre-drive module; wherein the second end of the pre-drive module is connected to the reference ground, and the turn-on voltage of the diode is greater than the operating voltage of the pre-drive module. Compared with the prior art resistor voltage division method, the embodiments of the present invention significantly reduce power loss.

Description

Technical Field

[0001] The present invention belongs to the field of information technology, and particularly relates to a voltage supply circuit for a pre-driver module of an arithmetic chip and a computing power board. Background Art

[0002] In order to improve computing power, computing power boards are generally circuit boards arranged in an array of chips. Usually, a computing power board is an arithmetic array unit composed of several arithmetic chips (such as ASIC, CPU or GPU).

[0003] The core voltage supply of the arithmetic chips in the computing power board mostly adopts a series power supply mode, in which the power supply positive and power supply negative (reference ground) of the arithmetic chips are connected end to end to form a multi-stage series voltage domain, and each voltage domain usually has one or several arithmetic chips. Moreover, each arithmetic chip has a pre-driver module supplied with voltage by an external auxiliary power supply circuit.

[0004] In the prior art, the pre-driver module is generally powered by a resistor voltage division method. However, the resistor voltage division method results in relatively large power loss. Summary of the Invention

[0005] Embodiments of the present invention provide a voltage supply circuit for a pre-driver module of an arithmetic chip and a computing power board.

[0006] The technical solution of the embodiments of the present invention is as follows:

[0007] A voltage supply circuit for a pre-driver module of an arithmetic chip, comprising:

[0008] A resistor, the first end of which is connected to a power supply;

[0009] A diode, the positive electrode of which is connected to the second end of the resistor, and the negative electrode of which is connected to the reference ground;

[0010] A voltage supply terminal, connected to the positive electrode of the diode, and adapted to be connected to the first end of the pre-driver module of the arithmetic chip; [[ID=,35]]

[0011] Wherein the second end of the pre-driver module is connected to the reference ground, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driver module.

[0012] In one embodiment, the resistance value of the resistor is R, where R = ((VCC - VCC_PRE)) / ((I_PRE + I_D1));

[0013] Where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of the pre-driver module; I_PRE is the operating current of the pre-driver module; I_D1 is the static loss current of the diode.

[0014] In one embodiment, the operating voltage range of the pre-driving module is [0.7 volts, 0.8 volts]; the diode is a silicon diode.

[0015] A voltage supply circuit for a voltage domain of a computing power board, the voltage domain includes one or more computing chips, and each computing chip includes a pre-driving module. The voltage supply circuit includes:

[0016] A resistor, the first end of the resistor is connected to a power supply;

[0017] A diode, the positive electrode of the diode is connected to the second end of the resistor, and the negative electrode of the diode is connected to the reference ground in the voltage domain;

[0018] A voltage supply terminal, connected to the positive electrode of the diode, and adapted to be respectively connected to the first end of the pre-driving module of each computing chip in the voltage domain;

[0019] Wherein the second end of the pre-driving module of each computing chip is respectively connected to the reference ground in the voltage domain, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driving module of each computing chip.

[0020] In one embodiment, the resistance value of the resistor is R, where R = ((VCC - VCC_PRE)) / ((I_PRE + I_D1)); where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of each pre-driving module in this voltage domain; I_PRE is the total operating current of all pre-driving modules in this voltage domain; I_D1 is the static loss current of the diode.

[0021] In one embodiment, the operating voltage range of the pre-driving module is [0.7 volts, 0.8 volts]; the diode is a silicon diode.

[0022] A computing power board includes N voltage domains and N voltage supply circuits corresponding to their respective voltage domains. Each voltage domain includes one or more computing chips, and each computing chip includes a pre-driving module. N is a positive integer of at least 2;

[0023] Wherein each voltage supply circuit includes:

[0024] A resistor, the first end of the resistor is connected to a power supply;

[0025] A diode, the positive electrode of the diode is connected to the second end of the resistor, and the negative electrode of the diode is connected to the reference ground in the voltage domain corresponding to this voltage supply circuit;

[0026] A voltage supply terminal, connected to the positive electrode of the diode, and adapted to be respectively connected to the first end of the pre-driving module of each computing chip in the voltage domain corresponding to this voltage supply circuit;

[0027] The second end of the pre-driver module of each computing chip is respectively connected to the reference ground in the voltage domain corresponding to the voltage providing circuit, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driver module of each computing chip.

[0028] In one embodiment, the resistance of the resistor is R, where R=((VCC-VCC_PRE)) / ((I_PRE+I_D1)); VCC is the voltage of the power supply; VCC_PRE is the operating voltage of each pre-driver module in the voltage domain corresponding to the voltage providing circuit; I_PRE is the total operating current of all pre-driver modules in the voltage domain corresponding to the voltage providing circuit; and I_D1 is the static loss current of the diode.

[0029] In one embodiment, the operating voltage range of the pre-driver module is [0.7 volts, 0.8 volts]; and the diode is a silicon diode.

[0030] As can be seen from the above technical solution, the voltage supply circuit includes: a resistor, a first end connected to a power supply; a diode, a positive electrode connected to the second end of the resistor and a negative electrode connected to a reference ground; a voltage supply terminal connected to the positive electrode of the diode and adapted to be connected to the first end of a pre-driver module; wherein the second end of the pre-driver module is connected to the reference ground, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driver module. Thus, the embodiments of the present invention utilize diodes instead of conventional voltage-dividing resistors, fully utilizing the characteristic that the diode's current is very small when the forward voltage is less than the turn-on voltage, thereby reducing the current loss of the voltage supply circuit and, thereby, reducing power loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural diagram of a voltage providing circuit for a pre-driver module in the prior art.

[0032] Figure 2 An exemplary structural diagram of a voltage providing circuit for the pre-driver module of the present invention.

[0033] Figure 3 Schematic diagram of the diode volt-ampere characteristic curve of the present invention.

[0034] Figure 4 FIG. 4 is a schematic diagram of a forward property curve of a diode of the present invention.

[0035] Figure 5 A structural diagram of a circuit providing the voltage domain of the hash board of the present invention.

[0036] Figure 6 This is an exemplary structural diagram of the hashboard of the present invention. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] For the sake of simplicity and intuitiveness in description, the solutions of the present invention will be elaborated below by describing several representative embodiments. A large number of details in the embodiments are only used to help understand the solutions of the present invention. However, it is obvious that the implementation of the technical solutions of the present invention may not be limited to these details. To avoid unnecessarily obscuring the solutions of the present invention, some embodiments are not described in detail but only the framework is given. Hereinafter, "comprising" means "including but not limited to", and "according to..." means "at least according to..., but not limited to only according to...". Due to the language habits of Chinese, when the quantity of a component is not specifically indicated hereinafter, it means that the component may be one or more, or can be understood as at least one.

[0039] The applicant has found that: in the prior art, the method of using resistor voltage division to supply power to the pre-driving module in the operation chip has the disadvantage of large power loss, which is particularly unfavorable for the energy-saving requirements. [[ID=1OB]]

[0040] Figure 1 It is a structural diagram of the voltage supply circuit for the pre-driving module of the operation chip in the prior art.

[0041] In Figure 1 , taking the case where there are 3 operation chips in the voltage domain as an example for illustration. The pre-driving module 1 is included in the operation chip 1 ( Figure 1 not shown in the figure); the pre-driving module 2 is included in the operation chip 2 ( Figure 1 not shown in the figure); the pre-driving module 3 is included in the operation chip 3 ( Figure 1 not shown in the figure).

[0042] In Figure 1 , two resistors R1 and R2 are connected in series to the power supply VCC (usually 1.8 volts). The voltage supply terminal T arranged between the resistors R1 and R2 is respectively connected to the pre-driving module 1, the pre-driving module 2, and the pre-driving module 3, so as to supply power to the pre-driving module 1, the pre-driving module 2, and the pre-driving module 3 respectively.

[0043] For the purpose of elaboration, the following is a demonstrative illustration based on a pre-driving module with specific electrical property values. Those skilled in the art can realize that these electrical property values (such as operating voltage or operating current) are only demonstrative and are not used to limit the protection scope of the embodiments of the present invention.

[0044] Example: The operating current of each pre-driving module is usually 5 to 6 milliamperes (mA), and 6 milliamperes can be taken in the calculation. The operating voltage VCC of each pre-driving modulePRE Typically, it is 0.7 to 0.8 volts (V), and 0.7 volts can be taken in the calculation. The pre-drive module 1, pre-drive module 2, and pre-drive module 3 are connected in parallel. Therefore, the total operating current I of the pre-drive module 1, pre-drive module 2, and pre-drive module 3 PRE ranges from 15 to 18 milliamperes (mA), and I PRE can be taken as 18 mA.

[0045] According to Ohm's law:

[0046] The equivalent resistance R_PRE of the pre-drive module 1, pre-drive module 2, and pre-drive module 3 is 0.7 volts / 0.018 amperes = 38.9 ohms.

[0047] In addition,

[0048] It can be seen that when R2 is infinite, R1 has a maximum value of 61 ohms (Ω). Therefore, R1 needs to be less than 61 ohms (Ω).

[0049] Considering the instant of power-on, the pre-drive module 1, pre-drive module 2, and pre-drive module 3 are not connected. The voltage division of the resistor R2 is close to VCC_PRE. Moreover, to prevent the voltage division of the resistor R2 from being greatly affected by the load (i.e., the equivalent resistance R_PRE of the pre-drive module 1, pre-drive module 2, and pre-drive module 3), R2 needs to be less than R_PRE (i.e., 38.9 Ω). Assuming R2 = 38 Ω, substituting the value of R2 into formula 1, R1 = 30.2 Ω can be calculated. Then, the VCC_PRE obtained by the voltage division of the resistor R2 is 1.8 * R2 / (R1 + R2) = 1 volt, which is higher than the actual required voltage of VCC_PRE (i.e., the operating voltage of the pre-drive module). Therefore, R2 is continuously reduced to reduce the influence of R_PRE. After continuous iterative calculation, finally R2 may be less than 10 Ω. Assuming R2 = 10 Ω, then R1 = 12.5 Ω. At this time, the VCC_PRE obtained by the voltage division of the resistor R2 is 1.8 * R2 / (R1 + R2) = 0.8 V, which is close to the VCC_PRE voltage (0.7 to 0.8 volts).

[0050] When the pre-drive module 1, pre-drive module 2, and pre-drive module 3 are all connected, the voltage division of the resistor R2 will decrease slightly. Specifically, the parallel equivalent resistance R3 of the resistor R2 and R_PRE is (R2 × R_PRE) / (R2 + R_PRE) = (38.9 × 10) / (38.9 + 10) = 7.95 Ω. Therefore, when the pre-drive module 1, pre-drive module 2, and pre-drive module 3 are all connected, the VCC_PRE obtained by the voltage division of the resistor R2 is 1.8 * R3 / (R1 + R3) = 0.6997 (V). Therefore, at this time, the static loss current consumed by the resistor R2 is approximately 70 mA.

[0051] It can be seen that since the static loss current consumed by the resistor R2 is relatively large, the power consumed by the resistor R2 is relatively large, which is not conducive to energy saving of the arithmetic chip. In particular, when there are multiple voltage domains and the number of arithmetic chips in each voltage domain is relatively large, the disadvantage of large power consumption of the resistor R2 becomes more obvious.

[0052] The applicant also found that when the forward voltage of the diode is small, the forward current of the diode is small (almost zero). Only when the forward voltage of the diode exceeds a certain value (Uon), the forward current will increase significantly. Generally, Uon is called the turn-on voltage. After the forward voltage exceeds the turn-on voltage, as the voltage increases, the forward current will increase rapidly, and the relationship between the current and the voltage is basically an exponential curve. Figure 3 It is a schematic diagram of the volt-ampere characteristic curve of the diode of the present invention.

[0053] Figure 4 It is a schematic diagram of the forward attribute curve of the diode of the present invention. As can be seen from Figure 4 It can be seen that after the diode is turned on, the voltage drop of the diode hardly changes with the current. Moreover, the turn-on voltage of the diode decreases as the temperature increases. The turn-on voltage is related to the material of the diode. Generally, the turn-on voltage of a silicon diode is about 0.7V.

[0054] Considering the disadvantage of large power loss caused by the large static loss current of the resistor R2 in the prior art and the above-mentioned forward characteristics of the diode, the embodiment of the present invention uses a diode to replace Figure 1 the voltage-dividing resistor R2 shown, so as to realize a voltage supply circuit of a pre-drive module with low cost and small loss.

[0055] Figure 2 It is a schematic structural diagram of the voltage supply circuit of the pre-drive module of the present invention. In Figure 2 it, taking 1 arithmetic chip as an example for illustration, the arithmetic chip includes a pre-drive module.

[0056] As shown in Figure 2 , the voltage supply circuit includes:

[0057] A resistor R1, the first end of the resistor R1 is connected to the power supply VCC;

[0058] A diode D1, the positive electrode of the diode D1 is connected to the second end of the resistor R1, and the negative electrode of the diode D1 is connected to the reference ground;

[0059] A voltage supply terminal T, which is connected to the positive electrode of the diode D1 and is adapted to be connected to the first end of the pre-drive module of the arithmetic chip;

[0060] The second terminal of the pre-driving module is connected to the reference ground, and the turn-on voltage of the diode D1 is greater than the operating voltage VCC_PRE of the pre-driving module.

[0061] Here, the reference ground to which the negative electrode of the diode D1 is connected is the low-voltage terminal (i.e., the negative power supply) within the voltage domain where the arithmetic chip is located.

[0062] For the purpose of illustration, the pre-driving module and the diode with specific electrical property values will be further described below by way of example. Those skilled in the art can realize that these electrical property values (such as the operating voltage or operating current) are only exemplary and are not used to limit the protection scope of the embodiments of the present invention.

[0063] In Figure 2 , the resistor R1 and the diode D1 are connected in series to the power supply VCC (usually 1.8 volts). The voltage supply terminal T arranged between the resistor R1 and the diode D1 is connected to the pre-driving module to supply power to the pre-driving module. The operating current I of the pre-driving module PRE is usually 5 to 6 milliamperes (mA) and can be taken as 6 milliamperes in the calculation. The operating voltage VCC of the pre-driving module PRE is usually 0.7 to 0.8 volts (V) and can be taken as 0.7 volts in the calculation.

[0064] When the forward voltage of the diode D1 increases to the operating voltage VCC_PRE of the pre-driving module, the diode D1 is in a slightly conducting state and has a small operating current. At this time, compared with the static loss current consumed by the resistor R2, the static loss current of the slightly conducting diode D1 is significantly reduced.

[0065] Specifically, the power supply VCC can be implemented as a power supply connected to the computing board. For example, after the output voltage of the power supply is stepped down, it is the power supply VCC.

[0066] In one embodiment, the resistor R1 = (VCC - VCC_PRE) / (I PRE + I_D1); where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of the pre-driving module; I PRE is the operating current of the pre-driving module; I_D1 is the static loss current of the diode. Preferably, the operating voltage range of the pre-driving module is [0.7 volts, 0.8 volts]; the diode D1 is a silicon diode.

[0067] From Figure 2 it can be seen that the embodiments of the present invention use the diode D1 instead of Figure 1Resistor R2 therein. At the moment of power-on, when the pre-drive module is not connected, the voltage VCC_PRE provided by the voltage supply terminal T is equal to the voltage across the diode D1. Since the operating voltage VCC_PRE provided to the pre-drive module is usually between 0.7V and 0.8V, it is therefore preferable to select a diode D1 with a turn-on voltage of 0.7V to 0.8V. According to the diode characteristic curve, in order to minimize the current across the diode D1 as much as possible, the turn-on voltage of the diode D1 should be as high as possible, so it is preferable to select a diode D1 with a turn-on voltage of 0.8V.

[0068] The actual operating voltage of the diode D1 is as low as possible, so a suitable resistance value of R1 can be selected to control the VCC_PRE voltage to the lowest level (0.7V). According to Figure 4 the forward attribute curve of the diode of the present invention as shown, when the forward voltage is 0.7V, the static loss current (I_D1) consumed by the diode D1 is about 10mA.

[0069] Therefore:

[0070] R1 = (1.8 - VCC_PRE) / (I PRE + I_D1) = (1.8 - 0.7) / (6 + 10)mA = 68.7Ω.

[0071] In Figure 2 a description is given by taking an arithmetic chip as an example. When there are multiple voltage domains and the number of arithmetic chips in each voltage domain is relatively large, the advantages of the embodiment of the present invention are more obvious. It should be noted that when the number of arithmetic chips changes, the I PRE in calculating R1 is related to the number of arithmetic chips. For example, when there are 3 arithmetic chips in a voltage domain, the respective pre-drive modules of these 3 arithmetic chips are connected in parallel, and the total operating current I PRE of the respective pre-drive modules of these 3 arithmetic chips ranges from 15 to 18 milliamperes (mA), and I PRE can be taken as 18 milliamperes. At this time, R1 = (1.8 - VCC_PRE) / (I PRE + I_D1) = (1.8 - 0.7) / (18 + 10)mA = 39.2Ω.

[0072] It can be seen that in this embodiment, when there are 3 arithmetic chips and the diode D1 is used, R1 is about 39Ω. Moreover, relatively speaking, such as Figure 1In the prior art with 3 arithmetic chips and using resistor R2 as shown, diode D1 saves a loss of (70 mA - 10 mA) = 60 mA. Therefore, the power saved in the embodiment of the present invention is 0.7 V * 60 mA = 42 mW. For example, assuming that the entire computing power board has 40 voltage domains (each voltage domain also contains 3 arithmetic chips), then 1.68 W of power can be saved. Assuming that the whole machine contains 3 computing power boards, then 5 W of power can be saved.

[0073] The above exemplary description presents typical values of the voltage supply circuit. Those skilled in the art can realize that such a description is only exemplary and is not used to limit the protection scope of the embodiments of the present invention.

[0074] Based on the above description, the embodiments of the present invention also propose a voltage supply circuit for the voltage domain of the computing power board.

[0075] Figure 5 It is a structural diagram of the voltage supply circuit for the voltage domain of the computing power board of the present invention.

[0076] In Figure 5 a voltage domain includes K arithmetic chips, and each arithmetic chip contains its own pre-driving module. Therefore, there are K pre-driving modules in the voltage domain, where K is a positive integer of at least 1, and each pre-driving module has the same electrical properties (for example, having the same operating voltage). The voltage supply circuit of the voltage domain includes:

[0077] Resistor R1, the first end of the resistor R1 is connected to the power supply VCC;

[0078] Diode D1, the positive electrode of the diode D1 is connected to the second end of the resistor R1, and the negative electrode of the diode D1 is connected to the reference ground in the voltage domain (that is, the low voltage end (negative power supply) in this voltage domain, and this low voltage end is usually connected in series to the high voltage end (positive power supply) of the next-level voltage domain);

[0079] Voltage supply terminal T, connected to the positive electrode of the diode D1, and adapted to be respectively connected to the first end of the pre-driving module of each arithmetic chip;

[0080] where the second end of the pre-driving module of each arithmetic chip is respectively connected to the reference ground in the voltage domain, and the turn-on voltage of the diode D1 is greater than the operating voltage of the pre-driving module of each arithmetic chip.

[0081] When the forward voltage of the diode D1 increases to the operating voltage of the pre-driving module, the diode D1 is in a slightly conducting state and has a small operating current. At this time, compared with the static loss current consumed by the resistor R2, the static loss current of the slightly conducting diode D1 is significantly reduced.

[0082] In one embodiment, where R1 = (VCC - VCC_PRE) / (I PRE + I_D1); where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of each pre-driver module within the voltage domain; I PRE is the total operating current of K pre-driver modules; I_D1 is the static loss current of the diode. Preferably, the operating voltage range of the pre-driver module is [0.7 volts, 0.8 volts]; the diode D1 is a silicon diode.

[0083] Based on the above description, an embodiment of the present invention also proposes a computing power board. The computing power board includes N voltage domains and N voltage supply circuits corresponding to their respective voltage domains. Each voltage domain includes one or more computing chips, and each computing chip contains a pre-driver module. N is a positive integer of at least 2;

[0084] where each of the N voltage supply circuits includes: a resistor, the first end of the resistor is connected to the power supply; a diode, the positive pole of the diode is connected to the second end of the resistor, and the negative pole of the diode is connected to the reference ground in the voltage domain corresponding to this voltage supply circuit; a voltage supply terminal, connected to the positive pole of the diode, and adapted to be respectively connected to the first end of the pre-driver module of each computing chip in the voltage domain corresponding to this voltage supply circuit; where the second end of the pre-driver module of each computing chip is respectively connected to the reference ground in the voltage domain corresponding to this voltage supply circuit, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driver module of each computing chip.

[0085] Figure 6 is a schematic structural diagram of the computing power board of the present invention.

[0086] In Figure 6 , computing chip 1, computing chip 2, and computing chip 3 constitute voltage domain 1; computing chip 4, computing chip 5, and computing chip 6 constitute voltage domain 2... computing chip 3N - 5, computing chip 3N - 4, and computing chip 3N - 3 constitute voltage domain N - 1; computing chip 3N - 2, computing chip 3N - 1, and computing chip 3N constitute voltage domain N.

[0087] The input voltage VCC1 from the power supply is input to voltage supply circuit 1. Voltage supply circuit 1 has a circuit structure similar to Figure 5 shown in the figure. Voltage supply circuit 1 provides the voltage VCC_PRE1 for the respective pre-driver modules of computing chip 1, computing chip 2, and computing chip 3 in voltage domain 1 based on VCC1. Preferably, the input voltage VCC1 has a potential difference of 1.8 volts relative to the reference ground in voltage domain 1.

[0088] The input voltage VCC2 from the power supply is input to the voltage supply circuit 2. The voltage supply circuit 2 has a circuit structure similar to Figure 5 the circuit structure shown. Based on VCC2, the voltage supply circuit 2 provides the voltage VCC_PRE2 for the respective pre-driver modules of the arithmetic chips 4, 5, and 6 in the voltage domain 2. Preferably, the input voltage VCC2 has a potential difference of 1.8 volts relative to the reference ground in the voltage domain 2.

[0089] And so on, VCC from the power supply N-1 is input to the voltage supply circuit N-1. The voltage supply circuit N-1 has a circuit structure similar to Figure 5 the circuit structure shown. Based on VCC N-1 , the voltage supply circuit N-1 provides the voltage VCC_PREN-1 for the respective pre-driver modules of the arithmetic chips 3N-5, 3N-4, and 3N-3 in the voltage domain N-1. Preferably, the input voltage VCC N-1 has a potential difference of 1.8 volts relative to the reference ground in the voltage domain N-1.

[0090] VCC from the power supply N is input to the voltage supply circuit N. The voltage supply circuit N has a circuit structure similar to Figure 5 the circuit structure shown. Based on VCC N , the voltage supply circuit N provides the voltage VCC_PREN for the respective pre-driver modules of the arithmetic chips 3N-2, 3N-1, and 3N in the voltage domain N. Preferably, the input voltage VCC N has a potential difference of 1.8 volts relative to the reference ground in the voltage domain N.

[0091] Based on the above description, an embodiment of the present invention also proposes a computer, including at least one computing power board as Figure 6 shown.

[0092] In summary, in the embodiment of the present invention, the voltage supply circuit includes: a resistor, the first end of which is connected to the power supply; a diode, the positive pole of which is connected to the second end of the resistor, and the negative pole is connected to the reference ground; a voltage supply terminal, which is connected to the positive pole of the diode and is adapted to be connected to the first end of the pre-driver module; wherein the second end of the pre-driver module is connected to the reference ground, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driver module. It can be seen that the embodiment of the present invention uses a diode instead of the voltage-dividing resistor in the prior art, makes full use of the characteristic that the current of the diode is very small when the forward voltage is less than the turn-on voltage, reduces the current loss of the diode, and thereby reduces the power loss.

[0093] It should be noted that not all modules in the above structural diagrams are necessary, and some modules can be ignored according to actual needs. The division of each module is only a functional division for the convenience of description. In actual implementation, a module can be implemented by multiple modules, and the functions of multiple modules can also be implemented by the same module. These modules can be located in the same device or in different devices.

[0094] The hardware modules in each embodiment can be implemented mechanically or electronically. For example, a hardware module can include a specially designed permanent circuit or logic device (such as a dedicated processor, such as an FPGA or ASIC) for performing specific operations. A hardware module can also include a programmable logic device or circuit (such as including a general-purpose processor or other programmable processor) temporarily configured by software for performing specific operations. As for whether to specifically adopt a mechanical method, a dedicated permanent circuit, or a temporarily configured circuit (such as configured by software) to implement the hardware module, it can be determined according to cost and time considerations.

[0095] In this article, "schematic" means "serving as an example, instance, or illustration", and any diagram or embodiment described as "schematic" in this article should not be construed as a more preferred or more advantageous technical solution. To make the drawings concise, only the parts related to the present invention are schematically shown in each figure, and do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is labeled. In this article, "one" does not mean that the quantity of the parts related to the present invention is limited to "only one", and "one" does not exclude the situation where the quantity of the parts related to the present invention is "more than one". In this article, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. are only used to represent the relative positional relationship between relevant parts, rather than defining the absolute positions of these relevant parts.

[0096] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A voltage supply circuit for a pre-drive module of an arithmetic chip, characterized in that Comprising: A resistor, the first end of the resistor being connected to a power supply; A diode, the positive electrode of the diode being connected to the second end of the resistor, and the negative electrode of the diode being connected to a reference ground; A voltage providing terminal, connected to the positive electrode of the diode, and adapted to be connected to the first end of a pre-driving module of an arithmetic chip; Wherein the second end of the pre-driving module is connected to a reference ground, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driving module.

2. The voltage providing circuit for the pre-driving module of the arithmetic chip according to claim 1, wherein The resistance value of the resistor is R, where R = ((VCC - VCC_PRE)) / ((I_PRE + I_D1)); Where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of the pre-driving module; I_PRE is the operating current of the pre-driving module; I_D1 is the static loss current of the diode.

3. The voltage supply circuit of the pre-driving module of the arithmetic chip according to claim 1 or 2, characterized in that, The operating voltage range of the pre-driving module is [0.7 volts, 0.8 volts]; the diode is a silicon diode.

4. A voltage supply circuit for a voltage domain of a computing power board, the voltage domain including one or more computing chips, each computing chip including a pre-driver module, characterized in that, The voltage providing circuit comprises: A resistor, the first end of the resistor being connected to a power supply; A diode, the positive electrode of the diode being connected to the second end of the resistor, and the negative electrode of the diode being connected to the reference ground in the voltage domain; A voltage providing terminal, connected to the positive electrode of the diode, and adapted to be respectively connected to the first end of the pre-driving module of each arithmetic chip; Wherein the second end of the pre-driving module of each arithmetic chip is respectively connected to the reference ground in the voltage domain, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driving module of each arithmetic chip.

5. The voltage providing circuit for the voltage domain of the computing power board according to claim 4, wherein 6. The voltage supply circuit for the voltage domain of the computing power board according to claim 4 or 5, characterized in that, The resistance value of the resistor is R, where R = ((VCC - VCC_PRE)) / ((I_PRE + I_D1)); where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of each pre-driving module in this voltage domain; I_PRE is the total operating current of all pre-driving modules in this voltage domain; I_D1 is the static loss current of the diode.

7. A computing power board, characterized in that, The operating voltage range of the pre-driving module is [0.7 volts, 0.8 volts]; the diode is a silicon diode. Comprising N voltage domains and N voltage providing circuits corresponding to their respective voltage domains, each voltage domain comprising one or more arithmetic chips, each arithmetic chip comprising a pre-driving module, and N being a positive integer of at least 2; Wherein each voltage providing circuit comprises: A resistor, the first end of the resistor being connected to a power supply; A diode, the positive electrode of the diode being connected to the second end of the resistor, and the negative electrode of the diode being connected to the reference ground in the voltage domain corresponding to this voltage providing circuit; A voltage providing terminal, connected to the positive electrode of the diode, and adapted to be respectively connected to the first end of the pre-driving module of each arithmetic chip in the voltage domain corresponding to this voltage providing circuit; Wherein the second end of the pre-driving module of each arithmetic chip is respectively connected to the reference ground in the voltage domain corresponding to this voltage providing circuit, and the turn-on voltage of the diode is greater than the operating voltage of the pre-driving module of each arithmetic chip.

8. The computing power board according to claim 7, wherein the resistance value of the resistor is R, where R = ((VCC - VCC_PRE)) / ((I_PRE + I_D1)); where VCC is the voltage of the power supply; VCC_PRE is the operating voltage of each pre-drive module in the voltage domain corresponding to the voltage supply circuit; I_PRE is the total operating current of all pre-drive modules in the voltage domain corresponding to the voltage supply circuit; I_D1 is the static loss current of the diode.

9. The computing power board according to claim 7 or 8, wherein the operating voltage range of the pre-drive module is [0.7 volts, 0.8 volts]; the diode is a silicon diode.

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