CN113268099A - Solid-state direct-current voltage reference circuit - Google Patents
Solid-state direct-current voltage reference circuit Download PDFInfo
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Abstract
The invention discloses a solid-state direct-current voltage reference circuit, which comprises: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; the working current source module outputs a first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module. The invention can restrain the aging phenomenon and the hysteresis phenomenon of the reference voltage element or the circuit element.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a solid-state direct-current voltage reference circuit.
Background
In the information technology application environment, an accurate reference voltage is needed for comparison and measurement in order to quantitatively analyze the physical quantity sensed by the sensor from the outside. The voltage parameters of the circuit for generating the reference voltage are greatly dependent on the temperature and the current, and the stability of the voltage can be greatly improved by placing the circuit for generating the reference voltage in a constant temperature environment.
However, the working voltage of the conventional semiconductor device generating the reference voltage depends on the state of the device carrier, so that unpredictable factors causing the state change of the device carrier are more, the constant temperature cannot ensure that the state of the carrier is constant, and the stability of a reference voltage element or a circuit is poor, so that the reference element or the circuit has an aging phenomenon and a hysteresis phenomenon.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a solid-state dc voltage reference circuit, so as to solve the problem of aging and hysteresis of the reference device caused by the poor stability of the conventional reference voltage device or circuit.
The technical scheme of the invention is as follows:
a solid state dc voltage reference circuit, comprising: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; wherein,
the working current source module outputs a first working current to the node current synthesis module and outputs the first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the node current synthesis module and outputs the second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module, and the constant voltage generation module outputs a reference voltage through the third working current.
According to a further arrangement of the present invention, the node current synthesizing module is electrically connected to the working current source module, the constant voltage generating module, the working point absolute value calculating module, and the compensating current source module, respectively; the working point absolute value calculation module is electrically connected with the constant voltage generation module.
In a further aspect of the present invention, the solid state dc voltage reference circuit further comprises:
and the temperature compensation module is electrically connected with the constant voltage generation module and is used for compensating circuit parameters.
In a further aspect of the present invention, the solid state dc voltage reference circuit further comprises:
and the auxiliary amplification module is electrically connected with the working point absolute numerical value calculation module and is used for assisting the solid-state direct-current voltage reference circuit to amplify and feed back.
In a further aspect of the present invention, the working point absolute value calculating module includes: a first resistor and a first transistor; one end of the first resistor is connected with an emitting electrode of the first transistor, and the other end of the first resistor is grounded; the base electrode of the first transistor is connected with the constant voltage generation module, and the collector electrode of the first transistor is respectively connected with the node current synthesis module and the compensation current source module.
In a further aspect of the present invention, the constant voltage generating module includes: the first voltage stabilizing diode, the second resistor and the third resistor; the anode of the first voltage-regulator diode is grounded, the cathode of the first voltage-regulator tube is connected with one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected with the node current synthesis module, and the other end of the third resistor is connected with the working point absolute value calculation module.
In a further aspect of the present invention, the node current synthesizing module comprises: a fourth resistor and a fifth resistor; one end of the fourth resistor is connected with the working current source module, the other end of the fourth resistor is connected with one end of the fifth resistor, and the other end of the fifth resistor is connected with the working point absolute value calculation module.
In a further aspect of the invention, the temperature compensation module comprises: the first resistor is connected with the first resistor temperature detector; one end of a sixth resistor is connected with the first temperature detector, and the other end of the sixth resistor is connected with the node current synthesis module; one end of the seventh resistor is connected with one end of the second temperature detector, the other end of the seventh resistor is connected with the node current synthesis module, and the other end of the second temperature detector is connected with the working point absolute value calculation module.
In a further aspect of the invention, the auxiliary amplification module comprises: a second transistor and an eighth resistor; one end of the eighth resistor is connected with the emitter of the second transistor, the other end of the eighth resistor is grounded, the collector of the second transistor is connected with the node current synthesis module, and the base of the second transistor is connected with the working point absolute value calculation module.
According to the further arrangement of the invention, the working current source module is an operational amplifier circuit or a constant current source circuit which can generate stable current; the compensation current source module is an operational amplifier circuit or a constant current source circuit which can generate stable current.
The invention provides a solid-state direct-current voltage reference circuit, which comprises: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; the working current source module outputs a first working current to the node current synthesis module and outputs the first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the node current synthesis module and outputs the second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module, and the constant voltage generation module outputs a reference voltage through the third working current. The working current output by the working current source module and the compensation current output by the working point absolute value calculation module are synthesized, and the synthesized current is supplied to the constant voltage generation module, so that the constant voltage generation module can work in a convergent state depending on the absolute value of the physical quantity of the working point to obtain better short-term and long-term stability, and the aging phenomenon and the hysteresis phenomenon of a reference voltage element or a circuit element are inhibited.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block architecture diagram of a solid state dc voltage reference circuit according to the present invention.
Fig. 2 is a circuit schematic 1 of the solid state dc voltage reference circuit of the present invention.
Fig. 3 is a circuit schematic of the solid state dc voltage reference circuit of the present invention, fig. 2.
Fig. 4 is a schematic diagram 1 illustrating the operation principle of the working point absolute value calculation module according to the present invention.
Fig. 5 is a schematic diagram 2 illustrating the operation principle of the working point absolute value calculation module according to the present invention.
Fig. 6 is a schematic diagram 3 illustrating the operation principle of the working point absolute value calculation module according to the present invention.
FIG. 7 is a graph of test results for a solid state DC voltage reference circuit of the present invention.
Fig. 8 is a schematic diagram 1 illustrating the operation principle of the auxiliary amplification module according to the present invention.
Fig. 9 is a schematic diagram 2 illustrating the operation principle of the auxiliary amplification module according to the present invention.
The various symbols in the drawings: 100. a working current source module; 200. a compensating current source module; 300. a node current synthesizing module; 400. a constant voltage generating module; 500. a working point absolute numerical value calculation module; 600. a temperature compensation module; 700. and an auxiliary amplification module.
Detailed Description
The present invention provides a solid-state dc voltage reference circuit, which is described in further detail below with reference to the accompanying drawings and examples, in order to make the objects, technical solutions and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the articles "a", "an", "the" and "the" may include plural forms as well, unless the context specifically dictates otherwise. If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any module and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The inventor researches and discovers that in the information technology application environment, an accurate reference voltage is needed for comparison and measurement to quantitatively analyze the external physical quantity sensed by the sensor. This reference voltage can be from a bandgap voltage circuit or a zener voltage circuit, the voltage parameters of which are greatly dependent on temperature and current, and the stability of the voltage can be greatly improved by placing the circuit generating the reference voltage in a constant temperature environment. Further research shows that the constant temperature still has more problems, such as hysteresis, and if a power supply with a voltage standard is completely cut off for no more than 1 second (including a backup direct current power supply), even if the equipment works for years at a stability of 2 ppm/year, the original calibration voltage can be completely lost and can not be recovered. Such as aging, which persists even with the current world's highest performance LTZ 1000.
However, the working voltage of the conventional semiconductor device generating the reference voltage depends on the state of the device carrier, so that unpredictable factors causing the state change of the device carrier are more, the constant temperature cannot ensure that the state of the carrier is constant, and the stability of a reference voltage element or a circuit is poor, so that the reference element or the circuit has an aging phenomenon and a hysteresis phenomenon.
To solve the above technical problem, the present invention provides a solid-state dc voltage reference circuit, which includes: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; the working current source module outputs a first working current to the node current synthesis module and outputs the first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the node current synthesis module and outputs the second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module, and the constant voltage generation module outputs a reference voltage through the third working current. The working current output by the working current source module and the compensation current output by the working point absolute value calculation module are synthesized, and the synthesized current is supplied to the constant voltage generation module, so that the constant voltage generation module can work in a convergent state depending on the absolute value of the physical quantity of the working point to obtain better short-term and long-term stability, and the aging phenomenon and the hysteresis phenomenon of a reference voltage element or a circuit element are inhibited.
Referring to fig. 1 to 9, the present invention provides a preferred embodiment of a solid-state dc voltage reference circuit.
As shown in fig. 1, the present invention provides a solid-state dc voltage reference circuit, which includes: the system comprises a working current source module 100, a compensation current source module 200, a node current synthesis module 300, a constant voltage generation module 400 and a working point absolute value calculation module 500; the working current source module 100 outputs a first working current to the node current synthesizing module 300, and outputs the first working current to the constant voltage generating module 400 through the node current synthesizing module 300; the constant voltage generating module 400 receives the first working current and then outputs a reference voltage to the working point absolute value calculating module 500, and the working point absolute value calculating module 500 outputs a compensation current to the node current synthesizing module 300 according to the reference voltage; the compensation current source module 200 outputs a second working current to the working point absolute value calculation module 500, and outputs the second working current to the node current synthesis module 300 through the working point absolute value calculation module 500; the node current synthesizing module 300 synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generating module 400, and the constant voltage generating module 400 outputs a reference voltage through the third working current.
Specifically, the node current synthesizing module 300 is electrically connected to the working current source module 100, the constant voltage generating module 400, the working point absolute value calculating module 500, and the compensating current source module 200, respectively; the operating point absolute value calculation module is electrically connected to the constant voltage generation module 400. The working current source module 100 is configured to provide a current required for normal operation, that is, a first current, for the constant voltage module, the compensation current source module 200 is configured to provide a stable working current, that is, a second current, for the working point absolute value calculation module 500, the constant voltage generation module 400 is configured to generate a reference voltage, the working point absolute value calculation module 500 is configured to output a dynamic compensation current according to the reference voltage generated by the constant voltage generation module 400, and the node current synthesis module 300 is configured to synthesize the current output by the working current source module 100, the current output by the compensation current source module 200, and the compensation current output by the working point absolute value calculation module 500, to obtain a third current, and supply the output third current to the constant voltage generation module 400.
In the above technical solution, by synthesizing the working current output by the working current source module 100 and the compensation current output by the compensation current source module 200 and the compensation current output by the working point absolute value calculation module 500, and supplying the synthesized current to the constant voltage generation module 400, the solid-state dc voltage reference may cause the working state of the constant voltage generation module 400 to depend on a mechanism of restriction and convergence in which the physical quantities, such as the absolute value of the working voltage and the absolute value of the working current, are correlated with each other during working, that is, the constant voltage generation module 400 may work in a converged state depending on the absolute value of the working point physical quantity, thereby ensuring that the solid-state dc voltage reference may work within a relatively small absolute tolerance range, and thus enabling the solid-state dc voltage reference circuit to obtain relatively good short-term and long-term stability, thereby suppressing the aging and hysteresis of the reference voltage device or circuit.
Referring to fig. 1, fig. 2 and fig. 4, in a further implementation manner of an embodiment, the working point absolute value calculating module 500 includes: a first resistor R1 and a first transistor T1; one end of the first resistor R1 is connected to the emitter of the first transistor T1, and the other end of the first resistor R1 is grounded; the base of the first transistor T1 is connected to the constant voltage generating module 400, and the collector of the first transistor T1 is connected to the node current combining module 300 and the compensating current source module 200, respectively.
Specifically, the first transistor T1 may be an NPN transistor, and the NPN transistor and the first resistor R1 are used to complete the calculation of the absolute value of the operating point.
Referring to fig. 3 and 5, in some embodiments, the first transistor T1 may also be a PNP transistor, an emitter of the PNP transistor is connected to the first resistor R1, a collector of the PNP transistor is connected to the node current combining module 300, and a base of the PNP transistor is connected to the constant voltage generating module 400.
Referring to fig. 1 and fig. 6, in some embodiments, the operating point absolute value calculating module 500 may further complete the operating point absolute value calculation through an operational amplifier, that is, the operating point absolute value calculating module 500 is composed of an operational amplifier IC1, a voltage-controlled current source and a first resistor R1. Specifically, one end of the first resistor R1 is connected to the constant voltage generating module 400, the other end of the first resistor R1 is connected to the 2 nd pin of the operational amplifier IC1, the 6 th pin of the operational amplifier IC1 is connected to the output end of the voltage-controlled current source, the input end of the voltage-controlled current source is connected to the node current synthesizing module 300, and the 3 rd pin of the operational amplifier IC1 is grounded. The voltage-controlled current source is the prior art and is not described herein again.
It should be noted that, due to the variability and diversity of the analog circuits, the types and models of the operational amplifiers are many, and the performance parameters and the required peripheral components are different, and the above embodiment is only one of the setting modes.
Referring to fig. 1 to 3, in a further implementation of an embodiment, the constant voltage generating module 400 includes: a first zener diode DZ1, a second resistor R2, and a third resistor R3; the anode of the first zener diode DZ1 is grounded, the cathode of the first zener diode DZ1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the second resistor R2 is connected to the node current synthesizing module 300, and the other end of the third resistor R3 is connected to the working point absolute value calculating module 500.
Specifically, when the first transistor T1 is an NPN transistor, the anode of the first zener diode DZ1 is grounded, the cathode of the first zener diode DZ1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the second resistor R2 is connected to the node current combining module 300, and the other end of the third resistor R3 is connected to the base of the first transistor T1. The first zener diode DZ1, the second resistor R2, and the third resistor R3 form a zener circuit for providing an accurate reference voltage. In some embodiments, the constant voltage generating module 400 may also be composed of a bandgap circuit, which is a mature prior art and thus is not described herein again.
It can be understood that, when the first transistor T1 is a PNP transistor, the cathode of the first zener diode DZ1 is grounded, the anode of the first zener diode DZ1 is connected to one end of the second resistor R2 and one end of the third resistor R3, the other end of the second resistor R2 is connected to the node current combining module 300, and the other end of the third resistor R3 is connected to the base of the first transistor T1.
In a further implementation of an embodiment, with continued reference to fig. 1 to 3, the node current synthesizing module 300 includes: a fourth resistor R4 and a fifth resistor R5; one end of the fourth resistor R4 is connected to the operating current source module 100, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the operating point absolute value calculating module 500.
Specifically, one end of the fourth resistor R4 is connected to the operating current source module 100, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the collector of the first transistor T1 and the compensation current source module 200. The fourth resistor R4 and the fifth resistor R5 are used to output the output current of the working current source module 100 to the constant voltage generating module 400 as the working current of the constant voltage generating module 400, output the output current of the compensating current source module 200 to the working point absolute value calculating module 500 as the working current of the working point absolute value calculating module 500, and synthesize the output current of the working current source module 100, the output current of the compensating current source module 200, and the compensating current output by the working point absolute value calculating module 500 as the working current of the constant voltage generating module 400 during stable working, so that the constant voltage generating module 400 works in a converged and stable state.
In some embodiments, the node current synthesizing module 300 may be formed by a resistor-capacitor network, and may also be formed by a transistor and a resistor-capacitor network or an operational amplifier and a resistor-capacitor network.
Referring to fig. 1, in some embodiments, the working current source module 100 is an operational amplifier circuit or a constant current source circuit capable of generating a stable current; the compensation current source module 200 is an operational amplifier circuit or a constant current source circuit capable of generating a stable current. The operational amplifier circuit and the constant current source circuit are prior art, and therefore are not described herein again. Of course, the operating current source module 100 and the compensating current source module 200 are not limited to the operational amplifier circuit or the constant current source circuit, and for example, the operating current source module 100 may also be composed of a stable power source, a stable resistor, and a constant current diode.
Referring to fig. 7, fig. 7 is a diagram showing the test results of the solid-state dc voltage reference circuit of the present invention, and it can be seen from fig. 7 that the uncertainty of the output voltage of the prototype of the present invention after the test is 1.9 × 10-7Such a small absolute tolerance.
Referring to fig. 1 to 3, in a further implementation manner of an embodiment, the solid-state dc voltage reference circuit further includes: a temperature compensation module 600, wherein the temperature compensation module 600 is electrically connected to the constant voltage generation module 400 and is used for compensating circuit parameters.
In some embodiments, the temperature compensation module 600 includes: a sixth resistor R6, a seventh resistor R7, a first resistor temperature detector RT1 and a second resistor temperature detector RT 2. One end of a sixth resistor R6 is connected to the first temperature detector RT1, and the other end of the sixth resistor R6 is connected to the base of the first transistor T1. One end of the seventh resistor R7 is connected to one end of the second temperature detector RT2, the other end of the seventh resistor R7 is connected to a common terminal of the fourth resistor R4 and the fifth resistor R5, and the other end of the second temperature detector RT2 is connected to a base of the first transistor T1. The temperature compensation module 600 may be configured according to device processes and circuit characteristics, which can improve measurement accuracy, and certainly, when the measurement requirement is not high, the temperature compensation module 600 may not be configured.
Referring to fig. 1, 8 and 9, in a further implementation of an embodiment, the solid-state dc voltage reference circuit further includes: and the auxiliary amplification module 700, the auxiliary amplification module 700 being electrically connected to the working point absolute value calculation module 500, and configured to assist the solid-state direct-current voltage reference circuit to perform amplification and feedback.
In some embodiments, the auxiliary amplification module 700 includes: a second transistor T2 and an eighth resistor R8. One end of the eighth resistor R8 is connected to the emitter of the second transistor T2, the other end of the eighth resistor R8 is grounded, the collector of the second transistor T2 is connected to the fourth resistor R4, and the base of the second transistor T2 is connected to the emitter of the first transistor T1. When a plurality of the second transistors T2 may be provided, the second transistors T2 may be used to assist amplification and feedback of the signal. It should be noted that, when the first transistor T1 is an NPN transistor, the second transistor T2 is a PNP transistor, and when the first transistor T1 is a PNP transistor, the second transistor T2 is an NPN transistor.
It should be noted that, due to the variability of the analog circuit, each of the NPN transistors described above can be replaced with an N-channel FET transistor (field effect transistor) or a MOS transistor to assist in the appropriate circuit technology. Similarly, each of the PNP transistors described above can be replaced with a P-channel FET transistor (field effect transistor) or MOS transistor to facilitate appropriate circuit technology.
In summary, the present invention provides a solid-state dc voltage reference circuit, which includes: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; the working current source module outputs a first working current to the node current synthesis module and outputs the first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the node current synthesis module and outputs the second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module, and the constant voltage generation module outputs a reference voltage through the third working current. The working current output by the working current source module and the compensation current output by the working point absolute value calculation module are synthesized, and the synthesized current is supplied to the constant voltage generation module, so that the working state of the constant voltage generation module can depend on a mechanism that the absolute value of the working voltage, the resistance value of the high-stability resistor, the absolute value of the working current and other physical quantities are mutually associated, restricted and converged when the working state of the constant voltage generation module is in work, namely the constant voltage generation module can work in a converged state depending on the absolute value of the working point physical quantities, so that better short-term and long-term stability is obtained, and the aging phenomenon and the hysteresis phenomenon of elements of a reference voltage element or a circuit are inhibited.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A solid state dc voltage reference circuit, comprising: the device comprises a working current source module, a compensation current source module, a node current synthesis module, a constant voltage generation module and a working point absolute value calculation module; wherein,
the working current source module outputs a first working current to the node current synthesis module and outputs the first working current to the constant voltage generation module through the node current synthesis module; the constant voltage generation module receives the first working current and then outputs a reference voltage to the working point absolute numerical value calculation module, and the working point absolute numerical value calculation module outputs a compensation current to the node current synthesis module according to the reference voltage; the compensation current source module outputs a second working current to the node current synthesis module and outputs the second working current to the working point absolute value calculation module through the node current synthesis module; the node current synthesis module synthesizes the first working current, the second working current and the compensation current into a third working current and outputs the third working current to the constant voltage generation module, and the constant voltage generation module outputs a reference voltage through the third working current.
2. The solid-state dc voltage reference circuit according to claim 1, wherein the node current synthesizing module is electrically connected to the operating current source module, the constant voltage generating module, the operating point absolute value calculating module, and the compensating current source module, respectively; the working point absolute value calculation module is electrically connected with the constant voltage generation module.
3. The solid state dc voltage reference circuit of claim 2, further comprising:
and the temperature compensation module is electrically connected with the constant voltage generation module and is used for compensating circuit parameters.
4. The solid state dc voltage reference circuit of claim 1, further comprising:
and the auxiliary amplification module is electrically connected with the working point absolute numerical value calculation module and is used for assisting the solid-state direct-current voltage reference circuit to amplify and feed back.
5. The solid state dc voltage reference circuit of claim 1, wherein the operating point absolute value calculation module comprises: a first resistor and a first transistor; one end of the first resistor is connected with an emitting electrode of the first transistor, and the other end of the first resistor is grounded; the base electrode of the first transistor is connected with the constant voltage generation module, and the collector electrode of the first transistor is respectively connected with the node current synthesis module and the compensation current source module.
6. The solid state dc voltage reference circuit of claim 1, wherein the constant voltage generation module comprises: the first voltage stabilizing diode, the second resistor and the third resistor; the anode of the first voltage-regulator diode is grounded, the cathode of the first voltage-regulator tube is connected with one end of the second resistor and one end of the third resistor, the other end of the second resistor is connected with the node current synthesis module, and the other end of the third resistor is connected with the working point absolute value calculation module.
7. The solid state dc voltage reference circuit of claim 1, wherein the node current synthesizing module comprises: a fourth resistor and a fifth resistor; one end of the fourth resistor is connected with the working current source module, the other end of the fourth resistor is connected with one end of the fifth resistor, and the other end of the fifth resistor is connected with the working point absolute value calculation module.
8. The solid state dc voltage reference circuit of claim 3, wherein the temperature compensation module comprises: the first resistor is connected with the first resistor temperature detector; one end of a sixth resistor is connected with the first temperature detector, and the other end of the sixth resistor is connected with the node current synthesis module; one end of the seventh resistor is connected with one end of the second temperature detector, the other end of the seventh resistor is connected with the node current synthesis module, and the other end of the second temperature detector is connected with the working point absolute value calculation module.
9. The solid state DC voltage reference circuit of claim 4, wherein the auxiliary amplification module comprises: a second transistor and an eighth resistor; one end of the eighth resistor is connected with the emitter of the second transistor, the other end of the eighth resistor is grounded, the collector of the second transistor is connected with the node current synthesis module, and the base of the second transistor is connected with the working point absolute value calculation module.
10. The solid state dc voltage reference circuit of claim 1, wherein the operating current source module is an operational amplifier circuit or a constant current source circuit capable of generating a stable current; the compensation current source module is an operational amplifier circuit or a constant current source circuit which can generate stable current.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110460640.0A CN113268099B (en) | 2021-04-27 | 2021-04-27 | Solid-state direct-current voltage reference circuit |
| DE112022000112.7T DE112022000112T5 (en) | 2021-04-27 | 2022-04-26 | A solid state DC voltage reference circuit |
| JP2023520246A JP2023543907A (en) | 2021-04-27 | 2022-04-26 | Static DC voltage reference circuit |
| PCT/CN2022/089134 WO2022228407A1 (en) | 2021-04-27 | 2022-04-26 | Solid-state direct-current voltage reference circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110460640.0A CN113268099B (en) | 2021-04-27 | 2021-04-27 | Solid-state direct-current voltage reference circuit |
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| CN113268099A true CN113268099A (en) | 2021-08-17 |
| CN113268099B CN113268099B (en) | 2021-12-17 |
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| CN202110460640.0A Active CN113268099B (en) | 2021-04-27 | 2021-04-27 | Solid-state direct-current voltage reference circuit |
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|---|---|
| JP (1) | JP2023543907A (en) |
| CN (1) | CN113268099B (en) |
| DE (1) | DE112022000112T5 (en) |
| WO (1) | WO2022228407A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022228407A1 (en) * | 2021-04-27 | 2022-11-03 | 南通至正电子有限公司 | Solid-state direct-current voltage reference circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022228407A1 (en) | 2022-11-03 |
| JP2023543907A (en) | 2023-10-18 |
| DE112022000112T5 (en) | 2023-06-29 |
| CN113268099B (en) | 2021-12-17 |
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Address after: 226000 Room 502, 5 / F, Hanlin Science Park, No. 66, Guangzhou road, Nantong Economic and Technological Development Zone, Nantong City, Jiangsu Province Patentee after: Nantong Zhizheng Electronics Co.,Ltd. Address before: 518033 room 3910, block a, union Plaza, 5022 Binhe Road, Futian District, Shenzhen, Guangdong Patentee before: Shenzhen Zhizheng Electronics Co.,Ltd. |