Integrated circuit control systems and integrated circuits

Abstract

The present invention proposes a control system of an integrated circuit and an integrated circuit, wherein the control system includes: a leakage current circuit; a switch module; a current bias module voltage buffer circuit for receiving an input reference voltage; a control module, the control module is connected to the switch module and the voltage buffer circuit respectively, and the control module is used to open the voltage buffer circuit and close the switch module when the leakage current circuit is in a standby mode, and close the voltage buffer circuit and open the switch module when the leakage current circuit is in a normal working mode. Thus, the control system sets a voltage buffer circuit and a switch module, and controls the states of the voltage buffer circuit and the switch module according to the mode of the leakage current circuit, reduces the standby leakage current, and quickly restores the leakage current circuit to a normal working state when the standby mode ends, so as to reduce the standby power consumption of the integrated circuit while ensuring its performance.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuits, and in particular to an integrated circuit control system and an integrated circuit. Background Art

[0002] As the size of semiconductors gradually decreases, the leakage current of semiconductor devices also increases; at the same time, in order to maintain some data states and chip functions in standby mode, the power supply voltage of some leakage current circuits of many integrated circuits still exists in standby mode, which directly leads to increased standby power consumption of the integrated circuit, thereby affecting the standby time.

[0003] In the related art, the leakage current of the integrated circuit is reduced by lowering the power supply voltage of the leakage current circuit in the standby state. However, when the standby state ends, it takes a long time for the leakage current circuit to recover to the normal working state. This will directly affect the performance of the integrated circuit that needs to quickly recover to the normal working state from the standby state. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the first object of the present invention is to propose a control system for an integrated circuit to control the states of a voltage buffer circuit and a switch module according to the mode of a leakage current circuit, thereby reducing the standby leakage current and enabling the leakage current circuit to quickly return to a normal working state when the standby mode ends, thereby reducing the standby power consumption of the integrated circuit while ensuring its performance.

[0006] A second object of the present invention is to provide an integrated circuit.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a control system for an integrated circuit, comprising: a leakage current circuit; a switch module, a first end of the switch module is connected to a virtual ground end of the leakage current circuit, and a second end of the switch module is connected to a real ground; a current bias module, the current bias module comprises a voltage buffer circuit and a resistor, the voltage buffer circuit is respectively connected to the virtual ground end of the leakage current circuit and the first end of the resistor, the second end of the resistor is connected to a real ground, and the voltage buffer circuit is used to receive an input reference voltage; a control module, the control module is respectively connected to the switch module and the voltage buffer circuit, and the control module is used to open the voltage buffer circuit and close the switch module when the leakage current circuit is in a standby mode, and to close the voltage buffer circuit and open the switch module when the leakage current circuit is in a normal working mode.

[0008] According to the control system of the integrated circuit of the embodiment of the present invention, when the leakage current circuit is in the standby mode, the voltage buffer circuit is turned on and the switch module is turned off through the control module; when the leakage current circuit is in the normal working mode, the voltage buffer circuit is turned off and the switch module is turned on through the control module. Thus, the control system sets the voltage buffer circuit and the switch module, and controls the states of the voltage buffer circuit and the switch module according to the mode of the leakage current circuit, reduces the standby leakage current, and makes the leakage current circuit quickly return to the normal working state when the standby mode ends, so as to reduce the standby power consumption of the integrated circuit while ensuring its performance.

[0009] In addition, the control system of the integrated circuit according to the above embodiment of the present invention may also have the following additional technical features:

[0010] According to one embodiment of the present invention, the voltage buffer circuit includes: an operational amplifier unit, the input positive terminal of the operational amplifier unit is used to receive the input reference voltage, the input negative terminal of the operational amplifier unit is connected to the first end of the resistor, and the control end of the operational amplifier unit is connected to the control module; a first transistor, the control end of the first transistor is connected to the output end of the operational amplifier unit, the first end of the first transistor is connected to the virtual ground end of the leakage current circuit, and the second end of the first transistor is connected to the first end of the resistor.

[0011] According to an embodiment of the present invention, the control system of the integrated circuit further includes: a reference circuit, wherein the reference circuit is connected to the voltage buffer circuit, and the reference circuit is used to generate the reference voltage.

[0012] According to one embodiment of the present invention, the control system of the integrated circuit further includes: a temperature detection circuit, which is connected to the control module and is used to detect the ambient temperature of the leakage current circuit; the control module is connected to the reference circuit and the resistor, and the control module is also used to: adjust the voltage value of the reference voltage generated by the reference circuit or the resistance value of the resistor according to the received ambient temperature.

[0013] According to one embodiment of the present invention, the control system of the integrated circuit further includes: a reference voltage adjustment circuit, the control module is connected to the reference circuit through the reference voltage adjustment circuit, and the control module adjusts the voltage value of the reference voltage generated by the reference circuit through the reference voltage adjustment circuit.

[0014] According to an embodiment of the present invention, the control system of the integrated circuit further includes: a resistance trimming circuit, the control module is connected to the resistor through the resistance trimming circuit, and the control module adjusts the resistance value of the resistor through the resistance trimming circuit.

[0015] According to an embodiment of the present invention, the control module is further configured to: determine whether the leakage current circuit is in the standby mode according to a received standby mode indication signal.

[0016] According to an embodiment of the present invention, the operational amplifier unit is an operational amplifier.

[0017] According to an embodiment of the present invention, the switch module is a second transistor.

[0018] To achieve the above-mentioned purpose, a second embodiment of the present invention provides an integrated circuit, including a control system of the integrated circuit of the first embodiment of the present invention.

[0019] According to the integrated circuit of the embodiment of the present invention, through the control system of the integrated circuit of the embodiment of the present invention, a voltage buffer circuit and a switch module are set, and the states of the voltage buffer circuit and the switch module are controlled according to the mode of the leakage current circuit to reduce the standby leakage current, and when the standby mode ends, the leakage current circuit is quickly restored to a normal working state, thereby ensuring the performance of the integrated circuit while reducing the standby power consumption.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a schematic diagram of the structure of a control system of an integrated circuit according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of a control system of an integrated circuit according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a control system of an integrated circuit according to an example of the present invention;

[0025] Figure 4 is a schematic diagram of potential change of a virtual ground terminal of a leakage current circuit according to an example of the present invention;

[0026] Figure 5 is a structural block diagram of an integrated circuit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The control system of an integrated circuit and the integrated circuit according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] Figure 1 Schematic diagram of the structure of a control system of an integrated circuit according to an embodiment of the present invention.

[0030] like Figure 1 As shown, the control system 100 includes a leakage current circuit 10 , a switch module 20 , a current bias module 30 and a control module 40 .

[0031] Among them, the first end of the switch module 20 is connected to the virtual ground terminal VSS_S of the leakage current circuit 10, and the second end of the switch module 20 is connected to the real ground GND; the current bias module 30 includes a voltage buffer circuit 31 and a resistor R, the voltage buffer circuit 31 is respectively connected to the virtual ground terminal VSS_S of the leakage current circuit 10 and the first end of the resistor R, the second end of the resistor R is connected to the real ground GND, and the voltage buffer circuit 31 is used to receive the input reference voltage VREF; the control module 40 is respectively connected to the switch module 20 and the voltage buffer circuit 31, and the control module 40 is used to turn on the voltage buffer circuit 31 and turn off the switch module 20 when the leakage current circuit 10 is in the standby mode, and turn off the voltage buffer circuit 31 and turn on the switch module 20 when the leakage current circuit 10 is in the normal working mode.

[0032] It should be noted that, refer to Figure 1 , the power supply voltage of the leakage current circuit 10 is VDDC, which can power the low-voltage devices (including the leakage current circuit 10) inside the integrated circuit. The virtual ground terminal VSS_S of the leakage current circuit 10 is the source terminal port of its internal source ground potential NMOS (N Metal Oxide Semiconductor, N-type metal oxide semiconductor) tube, and VSS_B is the substrate port of its internal NMOS tube. It can be seen that the embodiment of the present invention sets the current bias module 30 and the switch module 20 at the virtual ground terminal VSS_S of the leakage current circuit 10.

[0033] Specifically, in practical applications, the control module 40 can monitor the current mode of the leakage current circuit 10 in real time. When the leakage current circuit 10 is in the standby mode, the control module 40 can control the voltage buffer circuit 31 to open so that the voltage buffer circuit 31 receives the input reference voltage VREF, and controls the switch module 20 to close, so that the reference voltage VREF acts on the first end of the resistor R through the voltage buffer circuit 31, thereby generating an accurate bias current, which is VREF / R, so that the bias current is compared with the leakage current of the leakage current circuit 10 to increase the potential of the virtual ground terminal VSS_S of the leakage current circuit 10, thereby reducing the standby leakage current of the leakage current circuit 10; when the leakage current circuit 10 is in the normal working mode, the control module 40 can control the voltage buffer circuit 31 to close, and open the switch module 20, so that the virtual ground terminal VSS_S of the leakage current circuit 10 is discharged through the switch module 20, so that the potential of the virtual ground terminal VSS_S of the leakage current circuit 10 is rapidly reduced, so that the leakage current circuit 10 quickly enters the normal working mode.

[0034] Compared with the solution of reducing the power supply voltage of the leakage current circuit in the standby mode in the prior art, the control system of the integrated circuit in the embodiment of the present invention sets a current bias module 30 and a switch module 20 at the virtual ground terminal VSS_S of the leakage current circuit 10, and then when the integrated circuit is in the normal working mode, the leakage current of the leakage current circuit 10 is reduced by turning on the current bias module 30 and turning off the switch module 20; when the integrated circuit ends the standby mode, the leakage current circuit 10 is quickly restored to the normal working mode by turning off the current bias module 30 and turning on the switch module 20, thereby avoiding the adverse impact on the data state and chip function of the integrated circuit due to the long recovery time.

[0035] Therefore, the control system sets up a voltage buffer circuit and a switch module, and controls the states of the voltage buffer circuit and the switch module according to the mode of the leakage current circuit, reduces the standby leakage current, and enables the leakage current circuit to quickly restore to a normal working state when the standby mode ends, thereby being able to reduce the standby power consumption of the integrated circuit while ensuring its performance.

[0036] In one embodiment of the present invention, Figure 2 As shown, the voltage buffer circuit 31 includes: an operational amplifier unit 311 and a first transistor M1.

[0037] Among them, the positive input terminal of the operational amplifier unit 311 is used to receive the input reference voltage, the negative input terminal of the operational amplifier unit 311 is connected to the first end of the resistor R, and the control end of the operational amplifier unit 311 is connected to the control module 40; the control end of the first transistor M1 is connected to the output end of the operational amplifier unit 311, the first end of the first transistor M1 is connected to the virtual ground terminal VSS_S of the leakage current circuit 10, and the second end of the first transistor M1 is connected to the first end of the resistor R.

[0038] Reference Figure 2 , the operational amplifier unit 311 is an operational amplifier OPA. The first transistor M1 can be an N-type MOS (Metal Oxide Semiconductor) tube, the first end of the first transistor M1 can be a drain, the second end can be a source, and the control end is a gate. In this embodiment, the switch module 20 is a second transistor M2, and the second transistor M2 can also be an N-type MOS tube.

[0039] Specifically, when the control module 40 controls the voltage buffer circuit 31 to open, that is, the operational amplifier unit 311 is turned on and the switch module 20 is turned off, the input positive terminal of the operational amplifier OPA receives the input reference voltage VREF, and the operational amplifier OPA and the first transistor M1 and the resistor R form a negative feedback loop, and output the reference voltage VREF to the upper end (first end) of the resistor R, so that the first transistor M1 outputs a bias current of VREF / R to the virtual ground terminal VSS_S of the leakage current circuit 10, so that the potential of the virtual ground terminal VSS_S increases, thereby reducing the standby leakage current of the leakage current circuit 10.

[0040] Therefore, when the leakage current circuit enters the standby mode, the leakage current is reduced by the voltage buffer circuit, thereby reducing the standby power consumption of the integrated circuit.

[0041] In one embodiment of the present invention, referring to Figure 2 The control system 100 of the integrated circuit may further include: a reference circuit 50. The reference circuit 50 is connected to the voltage buffer circuit 31, and the reference circuit 50 is used to generate a reference voltage.

[0042] Further, refer to Figure 2 The control system 100 of the integrated circuit may further include: a temperature detection circuit 60. The temperature detection circuit 60 is connected to the control module 40, and the temperature detection circuit 60 is used to detect the ambient temperature of the leakage current circuit 10; the control module 40 is connected to the reference circuit 50 and the resistor R, and the control module 40 may also be used to: adjust the voltage value of the reference voltage generated by the reference circuit 50 or the resistance value of the resistor R according to the received ambient temperature.

[0043] In this example, if Figure 3As shown, the control system 100 of the integrated circuit may further include: a reference voltage trimming circuit 70. The control module 40 is connected to the reference circuit 50 through the reference voltage trimming circuit 70, and the control module 40 adjusts the voltage value of the reference voltage generated by the reference circuit 50 through the reference voltage trimming circuit 70.

[0044] Furthermore, the control system 100 of the integrated circuit may further include: a resistance trimming circuit 80 . The control module 40 is connected to the resistor R through the resistance trimming circuit 80 , and the control module 40 adjusts the resistance value of the resistor R through the resistance trimming circuit 80 .

[0045] Specifically, the temperature detection circuit 60 can detect the ambient temperature of the leakage current circuit 10 in real time, and send the detected ambient temperature to the control module 40, and then the control module 40 adjusts the reference circuit 50 through the reference voltage adjustment circuit 70 according to the ambient temperature to adjust the voltage value of the reference voltage VREF generated by the reference circuit 50, or adjusts the resistance value of the resistor R through the resistance adjustment circuit 80 according to the ambient temperature, thereby adjusting the value of the bias current VREF / R, thereby adjusting the corresponding bias current according to different ambient temperatures.

[0046] Therefore, by adjusting the voltage value of the reference voltage or the resistance value of the resistor through the reference voltage adjustment circuit and the resistance adjustment circuit respectively, the bias current can be generated more accurately to avoid the loss of data and logic state maintained by the integrated circuit; and the value of the bias current is adjusted according to the ambient temperature of the leakage current circuit to adapt to the ambient temperature, thereby ensuring that the standby leakage current is effectively reduced.

[0047] In an example of the present invention, the control module 40 is further configured to determine whether the leakage current circuit 10 is in the standby mode according to the received standby mode indication signal.

[0048] Specifically, in actual applications, the user can send an indication signal to the control module 40 according to actual needs, so that the control module 40 controls the control system 100 of the integrated circuit to work. When the indication signal received by the control module 40 is a standby mode indication signal, the control module 40 determines that the leakage current circuit 10 is in the standby mode, and then performs corresponding control.

[0049] like Figure 4 As shown, ( Figure 4(where STBY represents the standby mode indication signal of the leakage current circuit 10, and φ represents the control signal sent by the control module 40 to the second transistor M2) When the leakage current circuit 10 is in the standby mode, the potential of the standby mode indication signal STBY is high, the control module 40 turns on the voltage buffer circuit 31, sends a low-level control signal to the second transistor M2 to turn off the second transistor M2, and compares the leakage current with the bias current generated by the current bias module 30, so that the potential of the virtual ground terminal VSS_S of the leakage current circuit 10 increases, thereby reducing the leakage current of the leakage current circuit 10. The bias current value generated by the voltage buffer circuit 31 can determine the potential of VSS_S, so that it is sufficient for the integrated circuit to maintain its logic state.

[0050] When the leakage current circuit 10 is in a normal working mode, the potential of the standby mode indication signal STBY is at a low level, the control module 40 turns off the voltage buffer circuit 31, sends a high-level control signal to the second transistor M2 to turn on the second transistor M2, and quickly reduces the potential of the virtual ground terminal VSS_S, so that the integrated circuit can quickly enter a normal working state.

[0051] In summary, the control system is provided with a voltage buffer circuit and a switch module, and controls the states of the voltage buffer circuit and the switch module according to the mode of the leakage current circuit, thereby reducing the standby leakage current, and quickly restoring the leakage current circuit to a normal working state when the standby mode ends, thereby being able to reduce the standby power consumption of the integrated circuit while ensuring its performance; by adjusting the voltage value of the reference voltage and the resistance value of the resistor through the reference voltage adjustment circuit and the resistor adjustment circuit respectively, the bias current can be generated more accurately to avoid the loss of data and logic states maintained by the integrated circuit; and the value of the bias current is adjusted according to the ambient temperature of the leakage current circuit to adapt to the ambient temperature, thereby ensuring that the standby leakage current is effectively reduced.

[0052] In order to implement the above embodiment, the present invention also proposes an integrated circuit. Figure 5 is a structural block diagram of an integrated circuit according to an embodiment of the present invention.

[0053] like Figure 5 As shown, the integrated circuit 1000 includes the integrated circuit control system 100 of the present invention.

[0054] The integrated circuit uses the control system of the integrated circuit of the embodiment of the present invention. The control system is provided with a voltage buffer circuit and a switch module, and controls the states of the voltage buffer circuit and the switch module according to the mode of the leakage current circuit, thereby reducing the standby leakage current, and quickly restoring the leakage current circuit to a normal working state when the standby mode ends, thereby ensuring the performance of the integrated circuit while reducing the standby power consumption.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0058] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0059] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0060] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0061] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0062] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A control system for an integrated circuit, characterized in that: include: Leakage current circuit; A switch module, wherein a first terminal of the switch module is connected to a virtual ground terminal of the leakage current circuit, and a second terminal of the switch module is connected to a real ground; A current bias module, the current bias module comprising a voltage buffer circuit and a resistor, the voltage buffer circuit is respectively connected to the virtual ground terminal of the leakage current circuit and the first end of the resistor, the second end of the resistor is connected to the real ground, and the voltage buffer circuit is used to receive an input reference voltage; A control module, wherein the control module is connected to the switch module and the voltage buffer circuit respectively, and the control module is used to turn on the voltage buffer circuit and turn off the switch module when the leakage current circuit is in a standby mode, and to turn off the voltage buffer circuit and turn on the switch module when the leakage current circuit is in a normal working mode.

2. The control system according to claim 1, characterized in that: The voltage buffer circuit comprises: An operational amplifier unit, wherein the positive input terminal of the operational amplifier unit is used to receive the input reference voltage, the negative input terminal of the operational amplifier unit is connected to the first end of the resistor, and the control terminal of the operational amplifier unit is connected to the control module; A first transistor, wherein a control end of the first transistor is connected to the output end of the operational amplifier unit, a first end of the first transistor is connected to the virtual ground end of the leakage current circuit, and a second end of the first transistor is connected to the first end of the resistor.

3. The control system according to claim 1, characterized in that: Also includes: A reference circuit is connected to the voltage buffer circuit, and is used to generate the reference voltage.

4. The control system according to claim 3, characterized in that: Also includes: A temperature detection circuit, the temperature detection circuit is connected to the control module, and the temperature detection circuit is used to detect the ambient temperature of the leakage current circuit; The control module is connected to the reference circuit and the resistor, and is further used to adjust the voltage value of the reference voltage generated by the reference circuit or the resistance value of the resistor according to the received ambient temperature.

5. The control system according to claim 4, characterized in that: Also includes: A reference voltage trimming circuit, wherein the control module is connected to the reference circuit via the reference voltage trimming circuit, and the control module adjusts the voltage value of the reference voltage generated by the reference circuit via the reference voltage trimming circuit.

6. The control system according to claim 4, characterized in that: Also includes: A resistance adjustment circuit, wherein the control module is connected to the resistor via the resistance adjustment circuit, and the control module adjusts the resistance value of the resistor via the resistance adjustment circuit.

7. The control system according to claim 1, characterized in that: The control module is also used for: According to the received standby mode indication signal, it is determined whether the leakage current circuit is in the standby mode.

8. The control system according to claim 2, characterized in that: The operational amplifier unit is an operational amplifier.

9. The control system according to claim 1, characterized in that: The switch module is a second transistor.

10. An integrated circuit, characterized in that: include: A control system for an integrated circuit as claimed in any one of claims 1 to 9.

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