High-voltage high-power integrated operational amplifier

Abstract

The invention relates to a high-voltage high-power integrated operational amplifier which comprises a high-voltage power supply module, an input end module, a differential amplifier module, a power amplifier module, a power supply adjusting circuit module, a heat dissipation module, an overcurrent and overheating protection circuit module, a feedback network module, an output end module, a protection circuit module and a control interface module. According to the high-voltage and high-power integrated operational amplifier, a high-voltage stable power supply is provided for a system through the high-voltage power supply module, and power and input signals are amplified by matching with the power amplifier module and the differential amplifier module respectively; finally, the output end of the high-voltage high-power integrated operational amplifier system can stably and reliably transmit the signal to a load through the output module, the high-voltage high-power integrated operational amplifier system can be suitable for various high-voltage high-power application occasions, and the problem that a traditional operational amplifier system cannot meet the requirement for high-power amplification of a high-voltage signal is solved; and the device is not suitable for various high-voltage and high-power application occasions.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated operational amplifiers, and specifically to a high-voltage and high-power integrated operational amplifier. Background Art

[0002] An integrated operational amplifier, abbreviated as an integrated op-amp, is a high-gain analog integrated circuit composed of multiple direct-coupled amplifier circuits. According to the national standard unified nomenclature, the model numbers of various types of integrated operational amplifiers consist of two parts: letters and Arabic numerals. The letters are at the beginning, and the two letters CF are uniformly used. C represents the national standard, and F represents a linear amplifier. The subsequent numbers represent the type of the integrated operational amplifier.

[0003] The integrated operational amplifier has a high gain, which can reach 60 - 180 dB, a large input resistance, a low output resistance, a high common-mode rejection ratio, small offset and drift, and also has the characteristic that the output voltage is zero when the input voltage is zero, and is suitable for the input and output of both positive and negative polarity signals.

[0004] In the prior art, an integrated operational amplifier is a commonly used integrated circuit device in the electronic field for amplifying voltage signals. Although the integrated operational amplifier performs well in many applications, there are also some potential problems. In some applications, it is necessary to amplify high-voltage signals with high power. For example, in industrial, communication, or medical equipment, traditional operational amplifier systems may not be able to meet these requirements and are not applicable to various high-voltage and high-power application scenarios. Therefore, a high-voltage and high-power integrated operational amplifier is proposed to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a high-voltage and high-power integrated operational amplifier, which has the advantage of being applicable to various high-voltage and high-power application scenarios, and solves the problem that in some applications, it is necessary to amplify high-voltage signals with high power. For example, in industrial, communication, or medical equipment, traditional operational amplifier systems may not be able to meet these requirements and are not applicable to various high-voltage and high-power application scenarios.

[0006] To achieve the above object, the present invention provides the following technical solution: A high-voltage and high-power integrated operational amplifier, comprising a high-voltage power supply module, an input terminal module, a differential amplifier module, a power amplifier module, a power supply regulation circuit module, a heat dissipation module, an overcurrent and overheat protection circuit module, a feedback network module, an output terminal module, a protection circuit module, and a control interface module;

[0007] Among them, the high-voltage power supply module is used for: providing the required high-voltage stable power supply;

[0008] The input terminal module is used for: adapting to the working range of the system;

[0009] Differential amplifier module, for: amplifying the input signal;

[0010] Power amplifier module, for: providing additional power amplification;

[0011] Power supply regulation circuit module, for: maintaining the stability of the high-voltage power supply;

[0012] Heat dissipation module, for: ensuring that the system maintains an appropriate temperature under high-power operation;

[0013] Overcurrent and overheat protection circuit module, for: protecting the system from faults and damages;

[0014] Feedback network module, for: controlling the gain and stability of the system;

[0015] Output terminal module, for: providing high-power output;

[0016] Protection circuit module, for: providing overvoltage protection and undervoltage protection;

[0017] Control interface module, for: providing an interface for adjusting and controlling the system.

[0018] Furthermore, the input terminal module includes an input protection circuit unit, an input filter unit, an input impedance matching network unit, a bias and calibration circuit unit, a temperature compensation circuit unit, and an input selection switch circuit unit.

[0019] Furthermore, the input protection circuit unit includes a zener diode and an electrostatic protection diode. The zener diode limits the input voltage, and the electrostatic protection diode prevents damage to the system caused by electrostatic discharge. The input filter unit filters out high-frequency noise and interference signals.

[0020] Furthermore, the input impedance matching network unit matches the output impedance of the sensor or input signal source. The bias and calibration circuit unit includes a bias circuit and a calibration circuit. The bias circuit controls the range of the operating point, and the calibration circuit maintains the stability and accuracy of the system.

[0021] Furthermore, the temperature compensation circuit unit includes a temperature sensor and a compensation circuit. The temperature sensor detects temperature changes, and the compensation circuit cancels the influence of temperature changes on performance. The selection switch circuit unit switches between multiple input signals and supports multi-channel operation.

[0022] Furthermore, the power supply regulation circuit module includes a power input protection module, a power filter circuit module, a voltage regulator module, an overcurrent protection module, a fault detection and indication module, and a power supply start and stop control module. The power input protection module includes overvoltage protection and reverse polarity protection. The overvoltage protection prevents the input power supply voltage from exceeding the set range, and the reverse polarity protection prevents incorrect connection of the power supply polarity.

[0023] Furthermore, the power filter circuit module includes filter capacitors and filter inductors. The filter capacitors filter out high-frequency noise and interference in the input power supply, and the filter inductors provide higher-order filtering. The voltage regulator module adjusts the power supply voltage to the stable value required by the system, and the overcurrent protection module monitors the current and limits the current within the set range.

[0024] Furthermore, the fault detection and indication module includes a fault detection circuit and an indicator light. The fault detection circuit monitors the status and abnormal conditions of the power supply module, and the indicator light indicates the system status and faults. The power supply start and stop control module controls the start and stop of the power supply.

[0025] Furthermore, the output terminal module includes an output matching network unit, an output protection circuit unit, an output current and voltage monitoring unit, and an output power supply voltage adjustment unit. The output matching network unit matches the impedance between the power amplifier and the load.

[0026] Furthermore, the output protection circuit unit includes overload protection and short-circuit protection. The overload protection prevents the output signal from exceeding the load, and the short-circuit protection prevents the output signal from short-circuiting. The output current and voltage monitoring unit includes a current monitoring circuit and a voltage monitoring circuit. The current monitoring circuit monitors the level of the output current, and the voltage monitoring circuit monitors the level of the output voltage. The output power supply voltage adjustment unit ensures that the output voltage remains stable under varying load conditions.

[0027] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0028] This high-voltage high-power integrated operational amplifier is provided with a high-voltage power supply module, an input terminal module, a differential amplifier module, a power amplifier module, a power supply regulation circuit module, a heat dissipation module, an overcurrent and overheat protection circuit module, a feedback network module, an output terminal module, a protection circuit module and a control interface module. The high-voltage power supply module provides a high-voltage stable power supply for the system. In cooperation with the power amplifier module and the differential amplifier module, the power and input signals are amplified respectively. Finally, through the output module, it is ensured that the output terminal of the high-voltage high-power integrated operational amplifier system can stably and reliably transmit signals to the load, while protecting the system and the load from potential damage. It can be applied to various high-voltage high-power application scenarios, solving the problem that in some applications, high-voltage signals need to be amplified with high power. For example, in industrial, communication or medical equipment, traditional operational amplifier systems may not meet these requirements and cannot be applied to various high-voltage high-power application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. is the system architecture diagram of the integrated operational amplifier of the present invention;

[0030] Figure 2 FIG. is the structural diagram of the input terminal module of the present invention;

[0031] Figure 3 FIG. is the structural diagram of the power supply regulation circuit module of the present invention;

[0032] Figure 4 FIG. is the structural diagram of the output terminal module of the present invention;

[0033] Figure 5 FIG. is the circuit diagram of the input terminal module of the present invention;

[0034] Figure 6 FIG. is the circuit diagram of the output terminal module of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1-6 , a high-voltage high-power integrated operational amplifier in this embodiment includes a high-voltage power supply module, an input terminal module, a differential amplifier module, a power amplifier module, a power supply regulation circuit module, a heat dissipation module, an overcurrent and overheat protection circuit module, a feedback network module, an output terminal module, a protection circuit module and a control interface module;

[0037] Among them, the high-voltage power supply module is used for: providing the required high-voltage stable power supply;

[0038] The input terminal module is used for: adapting to the working range of the system, including a voltage divider circuit or an input current control circuit;

[0039] The differential amplifier module is used for: amplifying the input signal and having high voltage tolerance;

[0040] The power amplifier module is used for: providing additional power amplification and being suitable for high-power applications;

[0041] The power supply regulation circuit module is used for: maintaining the stability of the high-voltage power supply;

[0042] The heat dissipation module is used for: ensuring that the system maintains an appropriate temperature during high-power operation;

[0043] The overcurrent and overheat protection circuit module is used for: protecting the system from faults and damages;

[0044] The feedback network module is used for: controlling the gain and stability of the system;

[0045] The output terminal module is used for: providing high-power output;

[0046] The protection circuit module is used for: providing overvoltage protection and undervoltage protection;

[0047] The control interface module is used for: providing an interface for adjusting and controlling the system.

[0048] The input terminal module includes an input protection circuit unit, an input filter unit, an input impedance matching network unit, a bias and calibration circuit unit, a temperature compensation circuit unit, and an input selection switch circuit unit.

[0049] The input protection circuit unit includes a voltage stabilizing diode and an electrostatic protection diode. The voltage stabilizing diode limits the input voltage to ensure that the input signal is within a safe operating range, and the electrostatic protection diode prevents damage to the system caused by electrostatic discharge. The input filter unit filters out high-frequency noise and interference signals to ensure the quality of the input signal.

[0050] The input impedance matching network unit matches the output impedance of the sensor or the input signal source. The bias and calibration circuit unit includes a bias circuit and a calibration circuit. The bias circuit controls the range of the operating point, and the calibration circuit maintains the stability and accuracy of the system.

[0051] The temperature compensation circuit unit includes a temperature sensor and a compensation circuit. The temperature sensor detects temperature changes, and the compensation circuit cancels the influence of temperature changes on performance. The selection switch circuit unit switches between multiple input signals and supports multi-channel operation.

[0052] The power supply regulation circuit module includes a power input protection module, a power filter circuit module, a voltage regulator module, an overcurrent protection module, a fault detection and indication module, and a power on and off control module. The power input protection module includes overvoltage protection and reverse polarity protection. The overvoltage protection prevents the input power supply voltage from exceeding the set range to prevent damage to the system, and the reverse polarity protection prevents incorrect connection of the power supply polarity to avoid system failures.

[0053] The power filter circuit module includes filter capacitors and filter inductors. The filter capacitors filter out high-frequency noise and interference in the input power supply, and the filter inductors provide higher-order filtering to ensure power supply stability. The voltage regulator module adjusts the power supply voltage to the stable value required by the system to ensure that the output voltage remains stable under varying load conditions. The overcurrent protection module prevents system overload by monitoring the current and limiting it within the set range.

[0054] The fault detection and indication module includes a fault detection circuit and an indicator light. The fault detection circuit monitors the status and abnormal conditions of the power supply module, and the indicator light indicates the system status and faults to provide visual cues. The power on and off control module controls the power on and off of the power supply to ensure operation under safe conditions.

[0055] The output terminal module includes an output matching network unit, an output protection circuit unit, an output current and voltage monitoring unit, and an output power supply voltage adjustment unit. The output matching network unit matches the impedance between the power amplifier and the load to maximize power transfer and reduce power loss.

[0056] The output protection circuit unit includes overload protection and short-circuit protection. The overload protection prevents the output signal from exceeding the load to avoid damage to the system and the load, and the short-circuit protection prevents the output signal from being short-circuited to protect the system from damage. The output current and voltage monitoring unit includes a current monitoring circuit and a voltage monitoring circuit. The current monitoring circuit monitors the level of the output current, and the voltage monitoring circuit monitors the level of the output voltage. The output power supply voltage adjustment unit ensures that the output voltage remains stable under varying load conditions.

[0057] The circuit diagram of the input terminal module is as Figure 4 shown, consisting of four P-JFET transistors J1 - J4 forming a common-source - common-gate differential input structure to collect and amplify the input signal. The Wilson current source and the bias current source composed of T4 and T11 provide a more stable bias current for the input stage. The active load of the input stage uses a buffered current mirror to increase the output impedance of the input stage, thus greatly increasing the voltage gain.

[0058] The circuit diagram of the output terminal module is as Figure 5As shown in the figure, it consists of overcurrent protection, overtemperature protection and two sets of Darlington tubes. The power output tubes are composed of two sets of Darlington tubes, with differential input and single-ended output. V01 and V02 are the differential inputs of the output stage. The two signals have opposite phases and similar magnitudes. After entering the Darlington output stage, they are amplified, and the phase conversion of the signals is achieved at the output end, realizing the in-phase superposition of currents and outputting a larger current. This Darlington structure with differential input and single-ended output can achieve a large current amplification ability. Compared with the general push-pull output structure, it can achieve twice the power output.

[0059] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0060] This high-voltage high-power integrated operational amplifier is provided with a high-voltage power supply module, an input terminal module, a differential amplifier module, a power amplifier module, a power supply regulation circuit module, a heat dissipation module, an overcurrent and overheat protection circuit module, a feedback network module, an output terminal module, a protection circuit module and a control interface module. The high-voltage power supply module provides a high-voltage stable power supply for the system. In cooperation with the power amplifier module and the differential amplifier module, the power and input signals are amplified respectively. Finally, through the output module, it is ensured that the output terminal of the high-voltage high-power integrated operational amplifier system can stably and reliably transmit the signal to the load, while protecting the system and the load from potential damage, and can be applied to various high-voltage high-power application scenarios, solving the problem that in some applications, high-voltage signals need to be amplified with high power. For example, in industrial, communication or medical equipment, traditional operational amplifier systems may not meet these requirements and cannot be applied to various high-voltage high-power application scenarios.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-voltage high-power integrated operational amplifier, characterized in that, It includes a high-voltage power supply module, an input terminal module, a differential amplifier module, a power amplifier module, a power supply regulation circuit module, a heat dissipation module, an overcurrent and overheat protection circuit module, a feedback network module, an output terminal module, a protection circuit module and a control interface module; Among them, the high-voltage power supply module is used to: provide the required high-voltage stable power supply; The input terminal module is used to: adapt to the working range of the system; The differential amplifier module is used to: amplify the input signal; The power amplifier module is used to: provide additional power amplification; The power supply regulation circuit module is used to: maintain the stability of the high-voltage power supply; The heat dissipation module is used to: ensure that the system maintains an appropriate temperature under high-power operation; The overcurrent and overheat protection circuit module is used to: protect the system from faults and damages; The feedback network module is used to: control the gain and stability of the system; The output terminal module is used to: provide high-power output; The protection circuit module is used to: provide overvoltage protection and undervoltage protection; The control interface module is used to: provide an interface for adjusting and controlling the system.

2. The high-voltage high-power integrated operational amplifier according to claim 1, characterized in that, The input terminal module includes an input protection circuit unit, an input filter unit, an input impedance matching network unit, a bias and calibration circuit unit, a temperature compensation circuit unit and an input selection switch circuit unit.

3. The high-voltage high-power integrated operational amplifier according to claim 2, characterized in that, The input protection circuit unit includes a zener diode and an electrostatic protection diode. The zener diode limits the input voltage, and the electrostatic protection diode prevents damage to the system caused by electrostatic discharge. The input filter unit filters out high-frequency noise and interference signals.

4. The high-voltage high-power integrated operational amplifier according to claim 2, characterized in that, The input impedance matching network unit matches the output impedance of the sensor or input signal source. The bias and calibration circuit unit includes a bias circuit and a calibration circuit. The bias circuit controls the range of the operating point, and the calibration circuit maintains the stability and accuracy of the system.

5. The high-voltage high-power integrated operational amplifier according to claim 2, characterized in that, The temperature compensation circuit unit includes a temperature sensor and a compensation circuit. The temperature sensor detects temperature changes, and the compensation circuit cancels the influence of temperature changes on performance. The selection switch circuit unit switches between multiple input signals and supports multi-channel operation.

6. The high-voltage high-power integrated operational amplifier according to claim 1, characterized in that, The power supply regulation circuit module includes a power supply input protection module, a power supply filter circuit module, a power supply voltage regulator module, an overcurrent protection module, a fault detection and indication module and a power supply start-up and shutdown control module. The power supply input protection module includes overvoltage protection and reverse polarity protection. The overvoltage protection prevents the input power supply voltage from exceeding the set range, and the reverse polarity protection prevents incorrect connection of the power supply polarity.

7. The high-voltage high-power integrated operational amplifier according to claim 6, characterized in that, The power supply filter circuit module includes filter capacitors and filter inductors. The filter capacitors filter out high-frequency noise and interference in the input power supply, and the filter inductors provide higher-order filtering. The power supply voltage regulator module adjusts the power supply voltage to the stable value required by the system, and the overcurrent protection module monitors the current and limits the current within the set range.

8. The high-voltage high-power integrated operational amplifier according to claim 6, characterized in that, The fault detection and indication module includes a fault detection circuit and an indicator light. The fault detection circuit monitors the status and abnormal conditions of the power supply module, and the indicator light indicates the system status and faults. The power supply start-up and shutdown control module controls the start-up and shutdown of the power supply.

9. The high-voltage high-power integrated operational amplifier according to claim 1, characterized in that, The output terminal module includes an output matching network unit, an output protection circuit unit, an output current and voltage monitoring unit, and an output power supply voltage adjustment unit. The output matching network unit matches the impedance between the power amplifier and the load.

10. The high-voltage high-power integrated operational amplifier according to claim 9, characterized in that: The output protection circuit unit includes overload protection and short-circuit protection. The overload protection prevents the output signal from exceeding the load, and the short-circuit protection prevents the output signal from being short-circuited. The output current and voltage monitoring unit includes a current monitoring circuit and a voltage monitoring circuit. The current monitoring circuit monitors the level of the output current, and the voltage monitoring circuit monitors the level of the output voltage. The output power supply voltage adjustment unit ensures that the output voltage remains stable under varying load conditions.

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