CN114337317A - Source meter circuit adopting four-quadrant driving mode - Google Patents
Source meter circuit adopting four-quadrant driving mode Download PDFInfo
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- CN114337317A CN114337317A CN202210141980.1A CN202210141980A CN114337317A CN 114337317 A CN114337317 A CN 114337317A CN 202210141980 A CN202210141980 A CN 202210141980A CN 114337317 A CN114337317 A CN 114337317A
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Abstract
The application discloses source meter circuit of four-quadrant drive mode, in the ageing system of COC, need reliable and stable drive current source to drive the COC chip, the ageing system of present COC adopts the drive current source of single-quadrant mostly. The utility model discloses a source table circuit of four-quadrant drive mode, sampling circuit samples the voltage and the electric current of output to feed back to simulation PID control module, simulation PID control module realizes the settlement of current source output through the electric current clamp system, and realize the settlement of voltage source output through the electric current clamp system, protect ageing COC chip, complementary drive circuit realizes the output of positive negative bidirectional power supply under the control of simulation PID control module, in order to realize the output of four-quadrant power.
Description
Technical Field
The present application relates to the field of electronic circuits, and more particularly, to a source meter circuit with a four-quadrant driving scheme.
Background
In an aging system of a Chip On Chip (COC) built in a laser Chip, a stable and reliable driving current source is needed to drive the COC Chip, and a voltmeter ammeter with higher precision is used for monitoring and controlling an aging state; in addition, in the aging process of the COC chip, a common cathode mode and a common anode mode are adopted, and the source meter is required to work in a four-quadrant mode to meet different COC aging configuration modes. Most of the present COC aging systems adopt a single-quadrant driving current source.
Therefore, it is an urgent technical problem to be solved by those skilled in the art how to provide a source meter circuit with a four-quadrant driving scheme.
Disclosure of Invention
The present application is directed to a source meter circuit of a four-quadrant driving scheme.
In order to solve the above technical problem, the present application provides a source meter circuit of a four-quadrant driving method, including: the device comprises a complementary driving circuit 12, an analog PID control module 11, an output module 13 and a sampling circuit 14;
the complementary driving circuit 12 is connected with a power supply 15, the analog PID control module 11 and the output module 13, the output module 13 is connected with the sampling circuit 14, and the sampling circuit 14 is connected with the analog PID control module 11;
the sampling circuit 14 is configured to collect a current value and a voltage value output by the output module 13, and send the current value and the voltage value to the analog PID control module 11;
the analog PID control module 11 is used for clamping the output current value and the output voltage value;
the complementary driving circuit 12 is used for outputting a positive and negative bidirectional power supply to the output module 13 under the control of the analog PID control module 11.
Preferably, in the source meter circuit of the four-quadrant driving mode, the sampling circuit 14 includes a voltage sampling circuit and a current sampling circuit;
the voltage sampling circuit and the analog PID control module 11 are used for sending the voltage value to the analog PID control module 11; the current sampling circuit and the analog PID control module 11 are configured to send the current value to the analog PID control module 11.
Preferably, the source meter circuit of the four-quadrant driving method further includes: a voltage clamping circuit;
the voltage clamping circuit is connected with the voltage sampling circuit and the analog PID control module 11, and is used for receiving the voltage value output by the voltage sampling circuit and clamping an output signal of the analog PID control module 11.
Preferably, in the source meter circuit with the four-quadrant driving mode, the power supply 15 includes a positive power supply filtering module and a negative power supply filtering module.
Preferably, the source meter circuit of the four-quadrant driving method further includes: a digital-to-analog converter;
the digital-to-analog converter is connected with the analog PID control module 11 and the voltage clamping circuit, and is configured to set the current value and the voltage value clamped by the analog PID control module 11.
Preferably, the source meter circuit of the four-quadrant driving method further includes: an analog switch, an analog-to-digital converter;
the analog switch is connected with the voltage sampling circuit and the current sampling circuit, and the analog switch is connected with the analog-digital converter.
Preferably, the source meter circuit of the four-quadrant driving mode, the forward power filter module includes: the device comprises a first magnetic bead, a first capacitor, a second capacitor, a third capacitor and a forward power supply;
the forward power supply is connected to a first end of the first magnetic bead, a second end of the first magnetic bead is connected to a first end of the first capacitor, a first end of the second capacitor and a first end of the third capacitor, a second end of the first capacitor, a second end of the second capacitor and a second end of the third capacitor are grounded, and a second end of the first magnetic bead is connected to the complementary driving circuit 12;
the negative power supply filtering module comprises: a second magnetic bead, a fourth capacitor, a fifth capacitor, a sixth capacitor and a negative power supply;
the negative power supply is connected with the first end of the second magnetic bead, the second end of the second magnetic bead is connected with the first end of the fourth capacitor, the first end of the fifth capacitor is connected with the first end of the sixth capacitor, the second end of the fourth capacitor, the second end of the fifth capacitor and the second end of the sixth capacitor are grounded, and the second end of the second magnetic bead is connected with the complementary driving circuit 12.
Preferably, the source meter circuit of the four-quadrant driving mode, the complementary driving circuit 12 includes: the first triode, the second triode and the first resistor;
the collector of the first triode is connected with the second end of the first magnetic bead, the emitter of the first triode is connected with the emitter of the second triode, the collector of the second triode is connected with the second end of the second magnetic bead, the base of the first triode and the base of the second triode are connected with the PID control module 11, and the emitter of the first triode and the emitter of the second triode are connected with the first end of the first resistor.
Preferably, in the source meter circuit of the four-quadrant driving method, the analog PID control module 11 includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a seventh capacitor, a first operational amplifier and a second operational amplifier;
a first end of the second resistor is connected to the digital-to-analog converter, a second end of the second resistor is connected to a positive input end of the first operational amplifier, a negative input end of the first operational amplifier is connected to a first end of the third resistor and a first end of the seventh capacitor, a second end of the third resistor is connected to an output end of the second operational amplifier, a second end of the seventh capacitor is connected to an output end of the first operational amplifier, an output end of the first operational amplifier is connected to a first end of the fourth resistor, a second end of the fourth resistor is connected to a base of the first triode and a base of the second triode, a positive input end of the second operational amplifier is connected to a first end of the seventh resistor and a first end of the fifth resistor, a second end of the seventh resistor is grounded, and a second end of the fifth resistor is connected to a first end of the first resistor, the negative input end of the second operational amplifier is connected with the first end of the sixth resistor and the first end of the fifth resistor, the second end of the sixth resistor is connected with the second end of the first resistor, the second end of the fifth resistor is connected with the output end of the second operational amplifier, and the output end of the second operational amplifier is connected with the voltage sampling circuit.
Preferably, the source meter circuit of the four-quadrant driving method, the voltage clamp circuit includes: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an eighth capacitor, a ninth capacitor, a third triode, a fourth triode, a third operational amplifier and a fourth operational amplifier;
a collector of the third triode and a collector of the fourth triode are grounded, an emitter of the third triode is connected with an emitter of the fourth triode, a base of the third triode is connected with a first end of the ninth resistor, a second end of the ninth resistor is connected with an output end of the third operational amplifier and a first end of the eighth capacitor, a positive input end of the third operational amplifier is connected with a first end of the eleventh resistor, a negative input end of the third operational amplifier is connected with a first end of the twelfth resistor and a second end of the eighth capacitor, a second end of the eleventh resistor is connected with the digital-to-analog converter, and a second end of the twelfth resistor is connected with a second end of the first resistor;
the base of the fourth triode is connected with the first end of the tenth resistor, the second end of the tenth resistor is connected with the output end of the fourth operational amplifier and the first end of the ninth capacitor, the positive input end of the fourth operational amplifier is connected with the first end of the thirteenth resistor, the negative input end of the fourth operational amplifier is connected with the first end of the fourteenth resistor and the second end of the ninth capacitor, the second end of the thirteenth resistor is connected with the digital-to-analog converter, and the second end of the fourteenth resistor is connected with the second end of the first resistor.
The source meter circuit of the four-quadrant driving mode comprises a complementary driving circuit, a Proportional-Integral-derivative (PID) control module, an output module and a sampling circuit, wherein the complementary driving circuit is connected with a power supply, the PID control module and the output module; the sampling circuit is used for collecting a current value and a voltage value output by the output module and sending the current value and the voltage value to the analog PID control module, and the analog PID control module is used for clamping the output current value and the output voltage value; the complementary driving circuit is used for outputting a positive and negative bidirectional power supply to the output module under the control of the analog PID control module, wherein the sampling circuit samples output voltage and current and feeds the sampled output voltage and current back to the analog PID control module, the analog PID control module realizes the setting of current source output through current clamping and the setting of voltage source output through voltage clamping, an aged COC chip is protected, and the complementary driving circuit realizes the output of the positive and negative bidirectional power supply under the control of the analog PID control module so as to realize the output of a four-quadrant power supply.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of a source meter circuit in a four-quadrant driving manner according to an embodiment of the present disclosure;
fig. 2 is a circuit diagram of a source meter circuit in a four-quadrant driving manner according to an embodiment of the present disclosure.
Wherein the reference numerals are as follows: 11 is an analog PID control module, 12 is a complementary drive circuit, 13 is an output module, 14 is a sampling circuit, and 15 is a power supply.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a source meter circuit with a four-quadrant driving mode.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
In an aging system of a laser COC chip, a stable and reliable driving current source is needed to drive the COC chip, a voltmeter ammeter with higher precision is needed to monitor and control an aging state, and in the process of COC aging test, current in the positive direction and the negative direction needs to be repeatedly added to the chip to achieve an aging effect, so that the source meter is needed to work in a four-quadrant mode to meet different aging configurations of the COC chip.
Fig. 1 is a schematic diagram of a source meter circuit in a four-quadrant driving manner according to an embodiment of the present application, and as shown in fig. 1, the source meter circuit in the four-quadrant driving manner includes: the device comprises a complementary driving circuit 12, an analog PID control module 11, an output module 13 and a sampling circuit 14;
the complementary driving circuit 12 is connected with the power supply 15, the analog PID control module 11 and the output module 13, the output module 13 is connected with the sampling circuit 14, and the sampling circuit 14 is connected with the analog PID control module 11;
the sampling circuit 14 is used for collecting a current value and a voltage value output by the output module 13 and sending the current value and the voltage value to the analog PID control module 11;
the analog PID control module 11 is used for clamping an output current value and an output voltage value;
the complementary driving circuit 12 is used for outputting a positive and negative bidirectional power supply to the output module 13 under the control of the analog PID control module 11.
It should be noted that, the analog PID control module 11 mentioned in this embodiment refers to a control quantity calculated by a linear combination of Proportion (contribution), Integral (Integral) and Differential (Differential) of an error between an output value and a preset value, and then the control quantity is used to control a controlled object. In this embodiment, the analog PID control module 11 is configured to clamp the output current value and the output voltage value according to the preset clamp, and the complementary driving circuit 12 receives the signal from the analog PID control module 11 and outputs the positive and negative bidirectional power to the output module 13 under the control of the analog PID control module 11. In this embodiment, the specific structure of the analog PID control module 11 is not limited, and the effect of clamping the output current value and the voltage value may be achieved.
It should be noted that the power supply 15 mentioned in this embodiment is a dc power supply, and the dc power supply provides a stable power supply requirement for the source meter circuit.
In addition, the sampling circuit 14 mentioned in this embodiment is connected to the output module 13, and is used for collecting a current value or a voltage value output by the output module 13 and feeding the current value or the voltage value back to the analog PID control module 11, where the analog PID control module 11 implements setting of current source output by current clamping and implements setting of voltage source output by voltage clamping. In this embodiment, the specific structure of the sampling circuit 14 is not limited, and the current value or the voltage value output by the source meter circuit may be collected and sent to the analog PID control module 11.
Specifically, a direct current power supply provides a stable power supply requirement for a source meter circuit, the analog PID control module 11 clamps an output current value and an output voltage value, the complementary drive circuit 12 converts a power supply 15 provided by the direct current power supply into a positive-negative bidirectional power supply to the output module 13 under the control of the analog PID control module 11, so as to realize the output of a four-quadrant power supply, in addition, the sampling circuit 14 samples the voltage and the current output by the output module 13 and feeds the sampled voltage and current back to the analog PID control module 11, the analog PID control module 11 realizes the setting of the output of a current source through current clamping, and realizes the setting of the output of a voltage source through voltage clamping, so as to protect an aged COC chip.
According to the above embodiments, in order to implement the current value and the voltage value of the clamp output, this embodiment provides a preferable scheme, in which the sampling circuit 14 of the source meter circuit in the four-quadrant driving mode includes a voltage sampling circuit and a current sampling circuit;
the voltage sampling circuit and analog PID control module 11 is used for sending the voltage value to the analog PID control module 11; the current sampling circuit and the analog PID control module 11 are used for sending the current value to the analog PID control module 11.
The voltage sampling circuit mentioned in this embodiment is configured to sample a voltage value output by the output module 13, and send the voltage value to the analog PID control module 11, where the analog PID control module 11 implements setting of voltage source output by voltage clamping; the voltage sampling circuit mentioned in this embodiment is used for sampling the current value output by the output module 13 and sending the current value to the analog PID control module 11, and the analog PID control module 11 implements setting of voltage source output by current clamping to protect an aged COC chip.
According to the foregoing embodiment, this embodiment provides a preferable solution, and the source meter circuit in the four-quadrant driving mode further includes: a voltage clamping circuit;
the voltage clamping circuit is connected with the voltage sampling circuit and the analog PID control module 11, and is used for receiving the voltage value output by the voltage sampling circuit and clamping the output signal of the analog PID control module 11.
The voltage clamp circuit mentioned in this embodiment is connected to the voltage sampling circuit and the analog PID control module 11, and is configured to receive a voltage value output by the voltage sampling circuit and clamp an output signal of the analog PID control module 11, where the voltage clamp circuit directly receives the output voltage value collected by the voltage sampling circuit, and sends a clamp signal to the analog PID control module 11 according to the output voltage value, and clamps the output voltage value through the analog PID control module 11.
According to the above embodiment, the power supply 15 is a dc power supply, and this embodiment provides a preferred scheme, in which the power supply 15 includes a positive power supply filtering module and a negative power supply filtering module, in the source meter circuit in a four-quadrant driving manner.
The positive power supply filtering module comprises a positive output end of the power supply 15 and a filtering circuit, the negative power supply filtering module comprises a negative output end of the power supply 15 and a filtering circuit, and the positive power supply filtering module and the negative power supply filtering module are used for stabilizing current input to the complementary driving circuit 12 and effectively filtering frequency points of specific frequency or frequencies except the frequency points to obtain required effective signals.
According to the foregoing embodiments, this embodiment provides a preferable solution, in which the source meter circuit in a four-quadrant driving mode further includes: a digital-to-analog converter;
the digital-to-analog converter is connected with the analog PID control module 11 and the voltage clamping circuit and is used for setting a current value and a voltage value clamped by the analog PID control module 11.
The digital-to-analog converter mentioned in this embodiment is connected to the analog PID control module 11 and the voltage clamp circuit, and is configured to set a current value and a voltage value clamped by the analog PID control module 11, that is, the digital-to-analog converter directly sets a current value and a voltage value to be output, the digital-to-analog converter converts a set digital signal into an analog signal and sends the analog signal to the analog PID control module 11, and the analog PID control module 11 clamps the output current value and the output voltage value according to the analog signal. In this embodiment, the clamp signals of the source meter circuits are not limited to how many source meter circuits are set by one digital-to-analog converter, for example, a multi-channel digital-to-analog converter is adopted, and one digital-to-analog converter can be connected to a plurality of analog PID control modules 11 to realize the setting of a plurality of four-quadrant source meter circuits.
According to the foregoing embodiments, this embodiment provides a preferable solution, in which the source meter circuit in a four-quadrant driving mode further includes: an analog switch, an analog-to-digital converter;
the analog switch is connected with the voltage sampling circuit and the current sampling circuit, and the analog switch is connected with the analog-digital converter.
The analog switch mentioned in this embodiment is connected with the voltage sampling circuit and the voltage sampling circuit, and the analog switch is connected with the analog-to-digital converter, and the analog switch collects the voltage value and the current value that the voltage sampling circuit and the voltage sampling circuit collected, sends the voltage value and the current value to the analog-to-digital converter again, converts analog signals into numerical signals through the analog-to-digital converter, realizes output signal's real-time supervision.
In addition, this embodiment provides a preferred scheme, in which the analog switch is connected to the voltage sampling circuits and the voltage sampling circuits of the source meter circuits, and transmits the acquired data to a multi-channel analog-to-digital converter, and the analog-to-digital converter realizes real-time monitoring of the output signals of the source meter circuits, thereby greatly reducing the circuit cost.
Fig. 2 is a circuit diagram of a source meter circuit in a four-quadrant driving manner according to an embodiment of the present disclosure.
According to the foregoing embodiments, this embodiment provides a preferred solution, in a source meter circuit with a four-quadrant driving mode, the forward power filter module includes: the circuit comprises a first magnetic bead L1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a forward power supply VCC +;
a forward power supply VCC + is connected to a first end of a first magnetic bead L1, a second end of the first magnetic bead L1 is connected to a first end of a first capacitor C1, a first end of a second capacitor C2 and a first end of a third capacitor C3, a second end of the first capacitor C1, a second end of the second capacitor C2 and a second end of the third capacitor C3 are grounded, and a second end of the first magnetic bead L1 is connected to the complementary driving circuit 12;
the negative power supply filtering module comprises: a second magnetic bead L2, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a negative power supply VCC-;
the negative power supply VCC-is connected to the first end of the second magnetic bead L2, the second end of the second magnetic bead L2 is connected to the first end of the fourth capacitor C4, the first end of the fifth capacitor C5 is connected to the first end of the sixth capacitor C6, the second end of the fourth capacitor C4, the second end of the fifth capacitor C5 and the second end of the sixth capacitor C6 are grounded, and the second end of the second magnetic bead L2 is connected to the complementary driving circuit 12.
The first magnetic bead L1, the first capacitor C1, the second capacitor C2, the third capacitor C3, the positive power VCC + constitutes a positive power filter module, the second magnetic bead L2, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the negative power VCC-constitutes a negative power filter module, the input positive power VCC + is filtered, the current stably input to the complementary driving circuit 12 and the frequency point of the specific frequency or the frequency other than the frequency point are effectively filtered, and the required effective signal is obtained.
According to the above embodiments, this embodiment provides a preferred solution, the source meter circuit of the four-quadrant driving mode, and the complementary driving circuit 12 includes: the circuit comprises a first triode D1, a second triode D2, a first resistor R1;
the collector of the first triode D1 is connected with the second end of the first magnetic bead L1, the emitter of the first triode D1 is connected with the emitter of the second triode D2, the collector of the second triode D2 is connected with the second end of the second magnetic bead L2, the base of the first triode D1 and the base of the second triode D2 are connected with the analog PID control module 11, and the emitter of the first triode D1 is connected with the emitter of the second triode D2 and the first end of the first resistor R1.
It should be noted that the second terminal DRIVER _ OUTPUT of the first resistor R1 is an OUTPUT terminal.
In this embodiment, the first transistor D1 and the second transistor D2 form a complementary driving circuit, and the bases of the first transistor D1 and the second transistor D2 are connected to the analog PID control module 11, so as to realize the output of the four-quadrant power supply under the control of the analog PID control module 11.
According to the foregoing embodiment, this embodiment provides a preferred solution, in which the source meter circuit of the four-quadrant driving mode, the analog PID control module 11 includes: a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a seventh capacitor C7, a first operational amplifier U1 and a second operational amplifier U2;
a first end of the second resistor R2 is connected to the digital-to-analog converter DRIVER _ SET, a second end of the second resistor R2 is connected to a positive input end of the first operational amplifier U1, a negative input end of the first operational amplifier U1 is connected to a first end of the third resistor R3 and a first end of the seventh capacitor C7, a second end of the third resistor R3 is connected to an output end of the second operational amplifier U2, a second end of the seventh capacitor C7 is connected to an output end of the first operational amplifier U1, an output end of the first operational amplifier U1 is connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is connected to a base of the first transistor D1 and a base of the second transistor D2, a positive input end of the second operational amplifier U2 is connected to a first end of the seventh resistor R7 and a first end of the fifth resistor R5, a second end of the seventh resistor R7 is grounded, a second end of the fifth resistor R5 is connected to a first end of the first resistor R1, the negative input end of the second operational amplifier U2 is connected with the first end of the sixth resistor R6 and the first end of the fifth resistor R5, the second end of the sixth resistor R6 is connected with the second end of the first resistor R1, the second end of the fifth resistor R5 is connected with the output end of the second operational amplifier U2, and the output end of the second operational amplifier U2 is connected with the voltage sampling circuit.
In this embodiment, the first operational amplifier U1 and the second operational amplifier U2 form a current feedback circuit, the seventh capacitor C7 is used as an integrating capacitor, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the eighth resistor R8 are used as proportional resistors to realize proportional amplification of the output signal, and the first operational amplifier U1 and the second operational amplifier U2 realize analog PID control according to the signal set by the digital-analog converter or the output current value and the voltage value collected by the sampling circuit 14.
In addition, as shown in fig. 2, a second end of the first resistor R1 is connected with a first end of the resistor R15, a second end of the resistor R15 is connected with a first end of the resistor R16, the other end of the resistor R16 is grounded, the resistor R15 and the resistor R16 are used as voltage dividing resistors, a second end of the resistor R15 is connected with an output end of the second operational amplifier U2, and the current values are sent to the analog PID control module as current samples.
According to the foregoing embodiments, this embodiment provides a preferred embodiment, in which the source meter circuit of the four-quadrant driving scheme, the voltage clamp circuit includes: a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor, an eighth capacitor C8, a ninth capacitor C9, a third triode D3, a fourth triode D4, a third operational amplifier U3 and a fourth operational amplifier U4;
a collector of the third transistor D3 and a collector of the fourth transistor D4 are grounded, an emitter of the third transistor D3 is connected to an emitter of the fourth transistor D4, a base of the third transistor D3 is connected to a first end of a ninth resistor R9, a second end of the ninth resistor R9 is connected to an output end of the third operational amplifier U3 and a first end of an eighth capacitor C8, a positive input end of the third operational amplifier U3 is connected to a first end of an eleventh resistor R11, a negative input end of the third operational amplifier U3 is connected to a first end of the twelfth resistor R12 and a second end of the eighth capacitor C8, a second end V _ TH _ NEG of the eleventh resistor R11 is connected to the digital-to-analog converter, and a second end of the twelfth resistor R12 is connected to a second end of the first resistor R1;
the base of the fourth transistor D4 is connected to the first end of the tenth resistor R10, the second end of the tenth resistor R10 is connected to the output end of the fourth operational amplifier U4 and the first end of the ninth capacitor C9, the positive input end of the fourth operational amplifier U4 is connected to the first end of the thirteenth resistor R13, the negative input end of the fourth operational amplifier U4 is connected to the first end of the fourteenth resistor and the second end of the ninth capacitor C9, the second end V _ TH _ POS of the thirteenth resistor R13 is connected to the digital-to-analog converter, and the second end of the fourteenth resistor R1 is connected to the second end of the first resistor R1.
In this embodiment, the third operational amplifier U3 and the fourth operational amplifier U4 form a clamp voltage comparator, the third transistor D3 and the fourth transistor D4 are configured to implement positive and negative clamp control of a voltage signal, and the voltage clamp circuit is configured to receive a clamp voltage value signal set by the digital-to-analog converter and a voltage value collected by the sampling voltage circuit to implement clamping of an output voltage value.
The source meter circuit of the four-quadrant driving method provided by the present application is described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A source meter circuit of a four-quadrant driving mode, comprising: the device comprises a complementary driving circuit (12), an analog PID control module (11), an output module (13) and a sampling circuit (14);
the complementary driving circuit (12) is connected with a power supply (15), the analog PID control module (11) and the output module (13), the output module (13) is connected with the sampling circuit (14), and the sampling circuit (14) is connected with the analog PID control module (11);
the sampling circuit (14) is used for collecting a current value and a voltage value output by the output module (13) and sending the current value and the voltage value to the analog PID control module (11);
the analog PID control module (11) is used for clamping the output current value and the output voltage value;
the complementary driving circuit (12) is used for outputting a positive and negative bidirectional power supply to the output module (13) under the control of the analog PID control module (11).
2. The source meter circuit of the four-quadrant drive scheme according to claim 1, wherein the sampling circuit (14) comprises a voltage sampling circuit, a current sampling circuit;
the voltage sampling circuit and the analog PID control module (11) are used for sending the voltage value to the analog PID control module (11); the current sampling circuit and the analog PID control module (11) are used for sending the current value to the analog PID control module (11).
3. The source meter circuit of a four-quadrant drive scheme according to claim 2, further comprising: a voltage clamping circuit;
the voltage clamping circuit is connected with the voltage sampling circuit and the analog PID control module (11) and is used for receiving the voltage value output by the voltage sampling circuit and clamping the output signal of the analog PID control module (11).
4. Source meter circuit in four-quadrant drive mode according to claim 3, characterized in that the power supply (15) comprises a positive supply filter block, a negative supply filter block.
5. The source meter circuit of a four-quadrant drive scheme of claim 4, further comprising: a digital-to-analog converter;
the digital-to-analog converter is connected with the analog PID control module (11) and the voltage clamping circuit and is used for setting the current value and the voltage value clamped by the analog PID control module (11).
6. The source meter circuit of a four-quadrant drive scheme of claim 5, further comprising: an analog switch, an analog-to-digital converter;
the analog switch is connected with the voltage sampling circuit and the current sampling circuit, and the analog switch is connected with the analog-digital converter.
7. The source meter circuit of four-quadrant drive mode according to claim 6, wherein the forward power filter module comprises: the device comprises a first magnetic bead, a first capacitor, a second capacitor, a third capacitor and a forward power supply;
the forward power supply is connected with a first end of the first magnetic bead, a second end of the first magnetic bead is connected with a first end of the first capacitor, a first end of the second capacitor and a first end of the third capacitor, a second end of the first capacitor, a second end of the second capacitor and a second end of the third capacitor are grounded, and a second end of the first magnetic bead is connected with the complementary driving circuit (12);
the negative power supply filtering module comprises: a second magnetic bead, a fourth capacitor, a fifth capacitor, a sixth capacitor and a negative power supply;
the negative power supply is connected with a first end of the second magnetic bead, a second end of the second magnetic bead is connected with a first end of the fourth capacitor, a first end of the fifth capacitor is connected with a first end of the sixth capacitor, a second end of the fourth capacitor, a second end of the fifth capacitor and a second end of the sixth capacitor are grounded, and a second end of the second magnetic bead is connected with the complementary driving circuit (12).
8. Source meter circuit of the four-quadrant drive scheme according to claim 7, characterized in that the complementary drive circuit (12) comprises: the first triode, the second triode and the first resistor;
the collector electrode of the first triode is connected with the second end of the first magnetic bead, the emitter electrode of the first triode is connected with the emitter electrode of the second triode, the collector electrode of the second triode is connected with the second end of the second magnetic bead, the base electrode of the first triode and the base electrode of the second triode are connected with the analog PID control module (11), and the emitter electrode of the first triode and the emitter electrode of the second triode are connected with the first end of the first resistor.
9. The source meter circuit of the four-quadrant drive scheme according to claim 8, wherein the analog PID control module (11) comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a seventh capacitor, a first operational amplifier and a second operational amplifier;
a first end of the second resistor is connected to the digital-to-analog converter, a second end of the second resistor is connected to a positive input end of the first operational amplifier, a negative input end of the first operational amplifier is connected to a first end of the third resistor and a first end of the seventh capacitor, a second end of the third resistor is connected to an output end of the second operational amplifier, a second end of the seventh capacitor is connected to an output end of the first operational amplifier, an output end of the first operational amplifier is connected to a first end of the fourth resistor, a second end of the fourth resistor is connected to a base of the first triode and a base of the second triode, a positive input end of the second operational amplifier is connected to a first end of the seventh resistor and a first end of the fifth resistor, a second end of the seventh resistor is grounded, and a second end of the fifth resistor is connected to a first end of the first resistor, the negative input end of the second operational amplifier is connected with the first end of the sixth resistor and the first end of the fifth resistor, the second end of the sixth resistor is connected with the second end of the first resistor, the second end of the fifth resistor is connected with the output end of the second operational amplifier, and the output end of the second operational amplifier is connected with the voltage sampling circuit.
10. The source-meter circuit of four-quadrant drive mode according to claim 9, wherein the voltage clamping circuit comprises: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an eighth capacitor, a ninth capacitor, a third triode, a fourth triode, a third operational amplifier and a fourth operational amplifier;
a collector of the third triode and a collector of the fourth triode are grounded, an emitter of the third triode is connected with an emitter of the fourth triode, a base of the third triode is connected with a first end of the ninth resistor, a second end of the ninth resistor is connected with an output end of the third operational amplifier and a first end of the eighth capacitor, a positive input end of the third operational amplifier is connected with a first end of the eleventh resistor, a negative input end of the third operational amplifier is connected with a first end of the twelfth resistor and a second end of the eighth capacitor, a second end of the eleventh resistor is connected with the digital-to-analog converter, and a second end of the twelfth resistor is connected with a second end of the first resistor;
the base of the fourth triode is connected with the first end of the tenth resistor, the second end of the tenth resistor is connected with the output end of the fourth operational amplifier and the first end of the ninth capacitor, the positive input end of the fourth operational amplifier is connected with the first end of the thirteenth resistor, the negative input end of the fourth operational amplifier is connected with the first end of the fourteenth resistor and the second end of the ninth capacitor, the second end of the thirteenth resistor is connected with the digital-to-analog converter, and the second end of the fourteenth resistor is connected with the second end of the first resistor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141980.1A CN114337317A (en) | 2022-02-16 | 2022-02-16 | Source meter circuit adopting four-quadrant driving mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210141980.1A CN114337317A (en) | 2022-02-16 | 2022-02-16 | Source meter circuit adopting four-quadrant driving mode |
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| CN114337317A true CN114337317A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210141980.1A Pending CN114337317A (en) | 2022-02-16 | 2022-02-16 | Source meter circuit adopting four-quadrant driving mode |
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| CN114839507A (en) * | 2022-04-29 | 2022-08-02 | 苏州联讯仪器有限公司 | Power supply circuit for reliability test of laser chip |
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