An FPGA power module

Abstract

The application discloses an FPGA power supply module. The FPGA power supply module comprises a first DC conversion module, a second DC conversion module, a third DC conversion module, a first linear voltage stabilizer and a second linear voltage stabilizer; corresponding first to third voltage feedback adjustment circuits are connected to the interaction ends of the first to third DC conversion modules; the first input ends of the first to third DC conversion modules are used for connecting a DC power supply; the first output ends of the first to third DC conversion modules are used as the first to third power output ends of the FPGA power supply module respectively; the second output ends of the first and second DC conversion modules are connected to the input ends of the first and second linear voltage stabilizers respectively; and the output ends of the first and second linear voltage stabilizers are used as the first and second level output ends of the FPGA power supply module respectively. The FPGA power supply module can adapt to application requirements in different scenes.

Description

Technical Field

[0001] This invention belongs to the field of power supply systems, and more specifically, relates to an FPGA power supply module. Background Technology

[0002] As modern electronic devices become increasingly powerful, the application of FPGAs is becoming more and more necessary. The variety of FPGA models is also increasing, leading to higher requirements for FPGA power supplies. The stability and reliability of the power supply directly affect the normal operation and stability of the equipment. Since FPGA operation requires multiple different power level outputs, engineers often need to use multiple power modules and chips to build a power supply system for FPGA operation. This results in a complex system structure and a large size. Summary of the Invention

[0003] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides an FPGA power supply module, the purpose of which is to use an integrated FPGA power supply module to meet the power supply requirements of FPGA with multiple level outputs while ensuring level stability.

[0004] To achieve the above objectives, according to one aspect of the present invention, an FPGA power supply module is provided, comprising a first DC-DC converter module, a second DC-DC converter module, a third DC-DC converter module, a first linear regulator, and a second linear regulator;

[0005] At the interaction terminals of the first to third DC conversion modules, corresponding first to third voltage feedback regulation circuits are connected respectively.

[0006] The first input terminal of the first to third DC conversion modules is used to connect to a DC power supply;

[0007] The first output terminals of the first to third DC-DC converter modules serve as the first to third power output terminals of the FPGA power supply module, the second output terminal of the first DC-DC converter module is connected to the input terminal of the first linear regulator, the second output terminal of the second DC-DC converter module is connected to the input terminal of the second linear regulator, and the output terminals of the first and second linear regulators serve as the first and second level output terminals of the FPGA power supply module, respectively.

[0008] Preferably, the FPGA power supply module further includes a reference level module, wherein the first to third output terminals of the reference level module are respectively connected to the input terminals of the first to third voltage feedback adjustment circuits.

[0009] As a further preferred embodiment, any one or more of the first to third voltage feedback regulation circuits include a first integrated operational amplifier, a second integrated operational amplifier, a third integrated operational amplifier, a first resistor, a second resistor, and a third resistor; any one of the first to third output terminals of the reference level module is connected to the first terminal of the first resistor, the second terminal of the first resistor is connected to the first terminal of the second resistor and the non-inverting input terminal of the first integrated operational amplifier; the second terminal of the second resistor is grounded.

[0010] The output terminal of the first integrated operational amplifier is connected to the non-inverting input terminal of the second integrated operational amplifier; the output terminal of the second integrated operational amplifier is connected to the non-inverting input terminal of the first integrated operational amplifier, the non-inverting input terminal of the third integrated operational amplifier, and the first terminal of the third resistor.

[0011] The second end of the third resistor is connected to the inverting input of the third integrated operational amplifier; the output of the third integrated operational amplifier is connected to the inverting input of the first integrated operational amplifier.

[0012] The output terminal of the second integrated operational amplifier also serves as the output terminal of the voltage feedback regulation circuit, and the second terminal of the third resistor is also used to connect to the ground wire.

[0013] As a further preferred embodiment, the resistance values ​​R1 of the first resistor and R2 of the second resistor satisfy the following conditions:

[0014]

[0015] Wherein, V_ref is the output voltage of the reference level module, and V_out is the output voltage of the corresponding power output terminal of the DC-DC conversion module connected to the voltage feedback regulation circuit.

[0016] Preferably, the output voltage of the first to third power output terminals is 1V to 5V, and the output current is 1A to 5A.

[0017] As a further preferred embodiment, the output voltages of the first to third power output terminals are 3.3V, 1.5V, and 1.0V, respectively, and the output currents are 2A, 2A, and 4A, respectively.

[0018] Preferably, the output voltage of the first and second level output terminals is 0.5V to 2V, and the output current is less than 0.2A.

[0019] As a further preferred embodiment, the output voltages of the first and second level output terminals are 1.8V and 0.75V, respectively.

[0020] The FPGA power supply module of this invention is highly integrated, versatile, scalable, and easy to use, and can adapt to the application needs of different scenarios. At the same time, it uses a voltage feedback regulation circuit to ensure stable output level, providing an efficient and reliable power supply solution for FPGA operation, suitable for various industrial and scientific applications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the FPGA power supply module of the present invention;

[0022] Figure 2 This is a block diagram of the level feedback adjustment circuit of the present invention;

[0023] Figure 3 This is a block diagram of the FPGA power supply module according to Embodiment 1 of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1 As shown, the present invention provides an FPGA power supply module, including a first DC-DC conversion module, a second DC-DC conversion module, a third DC-DC conversion module, a first linear regulator, and a second linear regulator;

[0026] At the interaction terminals of the first to third DC conversion modules, corresponding first to third voltage feedback adjustment circuits are connected respectively. The first input terminal of the first to third voltage feedback adjustment circuits is used to connect to the reference level.

[0027] The first input terminal of the first to third DC conversion modules is used to connect to a DC power supply;

[0028] The first output terminals of the first to third DC-DC converter modules serve as the first to third power output terminals of the FPGA power supply module, the second output terminal of the first DC-DC converter module is connected to the input terminal of the first linear regulator, the second output terminal of the second DC-DC converter module is connected to the input terminal of the second linear regulator, and the output terminals of the first and second linear regulators serve as the first and second level output terminals of the FPGA power supply module, respectively.

[0029] In some embodiments, the reference level is provided by a reference level module directly integrated on the FPGA power supply module, and the first to third output terminals of the reference level module are respectively connected to the input terminals of the first to third voltage feedback regulation circuits.

[0030] The voltage feedback regulation circuit can adopt the following approach: Figure 2 The structure shown includes a first integrated operational amplifier U1, a second integrated operational amplifier U2, a third integrated operational amplifier U3, a first resistor R1, a second resistor R2, and a third resistor R3; any one of the first to third output terminals of the reference level module is connected to the first terminal of the first resistor R1, and the output voltage is the reference level V_ref; the second terminal of the first resistor R1 is connected to the first terminal of the second resistor R2 and the non-inverting input terminal of the first integrated operational amplifier U1; the second terminal of the second resistor R2 is grounded to GND;

[0031] The output terminal of the first integrated operational amplifier U1 is connected to the non-inverting input terminal of the second integrated operational amplifier; the output terminal of the second integrated operational amplifier U2 is connected to the non-inverting input terminal of the first integrated operational amplifier U1, the non-inverting input terminal of the third integrated operational amplifier U3, and the first terminal of the third resistor R3.

[0032] The second end of the third resistor R3 is connected to the inverting input of the third integrated operational amplifier U3; the output of the third integrated operational amplifier U3 is connected to the inverting input of the first integrated operational amplifier U1.

[0033] The output terminal of the second integrated operational amplifier U2 also serves as the output terminal of the voltage feedback regulation circuit, and the second terminal of the third resistor R3 is also used to connect to the ground wire.

[0034] As a further preferred embodiment, the first resistor R1 and the second resistor R2 satisfy...

[0035]

[0036] Wherein, V_ref is the output voltage of the reference level module, and V_out is the output voltage of the DC-DC converter connected to the voltage feedback regulation circuit, which is the output signal of the voltage feedback regulation circuit.

[0037] Since the voltage at the power output terminal is directly provided by the DC-DC conversion module, the current is usually large and used to provide signals to the FPGA chip. Typically, the output voltage of the first to third power output terminals is 1V to 5V, and the output current is 1A to 5A. Taking the ARTIX7 series FPGA as an example, the output voltages of the first to third power output terminals are 3.3V, 1.5V, and 1.0V, respectively, and the output currents are 2A, 2A, and 4A, respectively.

[0038] The level output terminal provided by the output terminal of the linear regulator is usually used as a reference level. It has low power and the output voltage can only be stepped down from the voltage of the corresponding power output terminal. The output voltage is usually 0.5V to 2V and the output current is less than 0.2A. Taking the ARTIX7 series FPGA as an example, the output voltages of the first and second level output terminals are 1.8V and 0.75V, respectively.

[0039] Example 1

[0040] Taking an ARTIX7 series FPGA as an example, the structure of the FPGA power supply module in this embodiment is as follows: Figure 3 As shown, the voltage feedback regulation circuit used is as follows: Figure 2 As shown in the diagram. The DC-DC power conversion consists of the first to third DC conversion modules, the LDOs are the first and second voltage regulators, the 24V DC input is provided by an external power supply, which also powers the integrated operational amplifier in the voltage feedback regulation circuit. The reference level is also externally connected.

[0041] The voltage feedback regulation circuit of this invention stabilizes the output level through dynamic balance regulation, and the specific implementation method is as follows:

[0042] 1. First, based on the FPGA chip attributes and power supply requirements, determine the required voltage amplitude of the FPGA power supply system; configure the values ​​of resistors R1 and R2 based on the reference voltage V_ref and the output voltage V_out, using the following formula:

[0043]

[0044] 2. Taking an output voltage of 1.0V as an example, the working principle of this level feedback adjustment circuit is explained as follows:

[0045] ① Adjust resistors R1 / R2 to make V 1+ =1.0V;

[0046] ②When the output voltage V out When >1.0V → Output voltage V of op-amp U3 3_out >1.0V → Input voltage V of op-amp U1 1+ =1.0V < V 1-→Operational amplifier U1 outputs V 1_out ↓→ Op-amp U2 output V out ↓;

[0047] ③ When the output voltage V out When <1.0V → Output voltage V of op-amp U3 3_out <1.0V → Input voltage V of op-amp U1 1+ =1.0V>V1-→Op-amp U1 output V 1_out ↑→Op-amp U2 output V out ↑;

[0048] In this way, the operation of the level feedback adjustment circuit will dynamically maintain the output level at 1.0V.

[0049] In summary, the above can constitute a power supply module design scheme for A7 series FPGAs, providing an efficient and convenient power supply for FPGA operation.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An FPGA power supply module, characterized in that, It includes a first DC-DC converter module, a second DC-DC converter module, a third DC-DC converter module, a first linear regulator, and a second linear regulator; At the interaction terminals of the first to third DC conversion modules, corresponding first to third voltage feedback regulation circuits are connected respectively. The first input terminal of the first to third DC conversion modules is used to connect to a DC power supply; The first output terminals of the first to third DC-DC converter modules serve as the first to third power output terminals of the FPGA power supply module, respectively. The second output terminals of the first and second DC-DC converter modules are respectively connected to the input terminals of the first and second linear regulators. The output terminals of the first and second linear regulators serve as the first and second level output terminals of the FPGA power supply module, respectively. It also includes a reference level module, the first to third output terminals of which are respectively connected to the input terminals of the first to third voltage feedback adjustment circuits. The voltage feedback regulation circuit in the first to third voltage feedback regulation circuits includes a first integrated operational amplifier, a second integrated operational amplifier, a third integrated operational amplifier, a first resistor, a second resistor, and a third resistor; any one output terminal of the reference level module is connected to the first terminal of the first resistor, the second terminal of the first resistor is connected to the first terminal of the second resistor and the non-inverting input terminal of the first integrated operational amplifier; the second terminal of the second resistor is grounded; The output terminal of the first integrated operational amplifier is connected to the non-inverting input terminal of the second integrated operational amplifier; the output terminal of the second integrated operational amplifier is connected to the non-inverting input terminal of the first integrated operational amplifier, the non-inverting input terminal of the third integrated operational amplifier, and the first terminal of the third resistor. The second end of the third resistor is connected to the inverting input of the third integrated operational amplifier; the output of the third integrated operational amplifier is connected to the inverting input of the first integrated operational amplifier. The output terminal of the second integrated operational amplifier also serves as the output terminal of the voltage feedback regulation circuit, and the second terminal of the third resistor also serves as ground.

2. The FPGA power supply module as described in claim 1, characterized in that, The resistance values ​​R1 of the first resistor and R2 of the second resistor satisfy the following: in, V_ref The output voltage of the reference level module. V_out The voltage is the output voltage of the power output terminal of the DC-DC converter module to which the voltage feedback regulation circuit is connected.

3. The FPGA power supply module as described in claim 1, characterized in that, The output voltage of the first to third power output terminals is 1V to 5V, and the output current is 1A to 5A.

4. The FPGA power supply module as described in claim 3, characterized in that, The output voltages of the first to third power output terminals are 3.3V, 1.5V, and 1.0V, respectively, and the output currents are 2A, 2A, and 4A, respectively.

5. The FPGA power supply module as described in claim 1, characterized in that, The output voltage of the first and second level output terminals is 0.5V ~ 2V, and the output current is less than 0.2A.

6. The FPGA power supply module as described in claim 5, characterized in that, The output voltages of the first and second level output terminals are 1.8V and 0.75V, respectively.

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