CN221261108U - Control circuit for rapidly detecting current and detection circuit - Google Patents
Control circuit for rapidly detecting current and detection circuit Download PDFInfo
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- CN221261108U CN221261108U CN202323273427.2U CN202323273427U CN221261108U CN 221261108 U CN221261108 U CN 221261108U CN 202323273427 U CN202323273427 U CN 202323273427U CN 221261108 U CN221261108 U CN 221261108U
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- 230000005540 biological transmission Effects 0.000 abstract description 5
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- 230000003111 delayed effect Effects 0.000 description 2
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Abstract
The utility model discloses a rapid detection current control circuit, which comprises an opening module, a collecting module and a control module, wherein the opening module is connected with the collecting module; one end of the acquisition module is connected with one end of the opening module, and the other end of the acquisition module is grounded; one end of the control module is connected between the starting module and the acquisition module, and the other end of the control module is electrically connected with the acquisition module; the starting module is used for controlling the on or/and off of the acquisition module, the acquisition module is used for acquiring the current output by the starting module, the control module is used for receiving the output voltage signal of the acquisition module and judging whether the output voltage exceeds the preset voltage, and if the output voltage is smaller than the preset voltage, the starting module is turned off; the technical problems that the current signal has certain delay in the transmission process, and the detection circuit cannot feed back in time, so that the control is not in time or can not be accurately controlled are solved.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to a fast current detection control circuit and a fast current detection circuit.
Background
With the rapid development of the electronic industry, the detection circuit is widely applied to various circuits, but certain delay exists in the transmission process of a current signal, so that the detection circuit cannot feed back in time (detection has errors), and thus the control is not in time or cannot be accurately controlled, and the overall performance of a product, such as oscillation, overshoot or undershoot, is affected.
Disclosure of utility model
The utility model mainly aims to provide a phase module, a staggered parallel inverter and an output high-power circuit, and aims to solve the technical problems that a certain delay exists in the transmission process of a current signal, and a detection circuit cannot feed back in time, so that control is not in time or cannot be accurately controlled.
In order to achieve the above object, the present utility model provides a fast detection current control circuit, comprising:
Opening the module;
The device comprises an acquisition module, a starting module and a connecting module, wherein one end of the acquisition module is connected with one end of the starting module, and the other end of the acquisition module is grounded;
The control module is connected between the starting module and the acquisition module at one end, and is electrically connected with the acquisition module at the other end;
The starting module is used for controlling the on or/and off of the acquisition module, the acquisition module is used for acquiring the current output by the starting module, the control module is used for receiving the output voltage signal of the acquisition module and judging whether the output voltage exceeds the preset voltage, and if the output voltage exceeds the preset voltage, the starting module is turned off.
As a further aspect of the present utility model, the acquisition module includes:
The inductor L1, one end of the inductor L1 is electrically connected with one end of the opening module;
And one end of the resistor R1 is electrically connected with the other end of the inductor L1, and one end of the resistor R1 is grounded.
As a further scheme of the utility model, the starting module is an N-type MOS tube or an NPN triode.
As a further scheme of the utility model, the drain electrode of the N-type MOS tube is connected with the VCC power supply, the grid electrode of the N-type MOS tube is connected with one end of the control module, and the source electrode of the N-type MOS tube is connected with the other end of the control module.
As a further aspect of the present utility model, the acquisition module includes:
The inductor L1, one end of the inductor L1 is electrically connected with the source electrode of the N-type MOS tube;
and one end of the resistor R1 is electrically connected with the other end of the inductor L1, and the other end of the resistor R1 is grounded.
As a further scheme of the utility model, one end of the control module is electrically connected with the grid electrode of the N-type MOS tube, and the other end of the control module is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube.
As a further aspect of the present utility model, the control module includes:
The first input end of the voltage comparator is connected between the source electrode of the N-type MOS tube and the input end of the inductor, the second input end of the voltage comparator is connected with external preset voltage, and the output end of the voltage comparator is connected with the grid electrode of the N-type MOS tube;
A resistor assembly having a first output and a second output; the input end of the resistance component is connected with the output end of the voltage comparator, the first output end of the resistance component is connected to the VCC power supply, and the second output end of the resistance component is connected between the inductor L1 and the N-type MOS tube.
As a further aspect of the present utility model, the resistor assembly includes:
One end of the resistor R2 is connected to the VCC power supply, and the other end of the resistor is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube;
And one end of the resistor R3 is electrically connected with the output end of the voltage comparator, and the other end of the resistor R3 is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube.
The utility model also provides a detection circuit which comprises the rapid detection current control circuit.
The beneficial effects are that:
The utility model provides a rapid detection current control circuit which comprises an opening module, a collecting module and a control module, wherein the opening module is connected with the collecting module; one end of the acquisition module is connected with one end of the opening module, and the other end of the acquisition module is grounded; one end of the control module is connected between the starting module and the acquisition module, and the other end of the control module is electrically connected with the acquisition module; the starting module is used for controlling the on or/and off of the acquisition module, the acquisition module is used for acquiring the current output by the starting module, the control module is used for receiving the output voltage signal of the acquisition module and judging whether the output voltage exceeds the preset voltage, and if the output voltage is smaller than the preset voltage, the starting module is turned off; the technical problems that the current signal has certain delay in the transmission process, and the detection circuit cannot feed back in time, so that the control is not in time or can not be accurately controlled are solved; the circuit has the beneficial effects of being capable of collecting current in the circuit in advance and controlling the on-off of the on-module, and being fast in dynamic response.
Drawings
FIG. 1 is a schematic diagram of a fast current detection control circuit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a control module according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a fast current detection control circuit module according to an embodiment of the utility model.
Reference numerals: 01. opening the module; 02. an acquisition module; 03. and a control module.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. 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, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, 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. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that 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 unless defined otherwise. 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.
Referring to fig. 1 to 3, fig. 1 is a schematic diagram of a fast current detection control circuit according to an embodiment of the utility model; the rapid detection current control circuit comprises an opening module 01, a collecting module 02 and a control module 03; one end of the acquisition module 02 is connected with one end of the opening module 01, and the other end of the acquisition module 02 is grounded; one end DETN of the control module 03 is connected between the starting module 01 and the acquisition module 02, and the other end DRIVE of the control module 03 is electrically connected with the acquisition module 02; the starting module 01 is used for controlling the on/off of the acquisition module 02, the acquisition module 02 is used for acquiring the current output by the starting module 01, the control module 03 is used for receiving the output voltage signal of the acquisition module 02 and judging whether the output voltage exceeds the preset voltage, and if the output voltage is smaller than the preset voltage, the starting module is turned off; the technical problems that the detection circuit cannot feed back in time due to certain delay of the current signal in the transmission process, so that the control is not timely or can not be accurately controlled are solved, and the beneficial effects that the current in the circuit can be collected in advance and the opening module is controlled to be closed and the dynamic response is fast are brought.
Wherein the acquisition module can be understood as an equivalent tiny inductance.
Specifically, the collecting module 02 includes an inductor L1 and a resistor R1, where one end of the inductor L1 is electrically connected to one end of the opening module 01; one end of the resistor R1 is electrically connected with the other end of the inductor L1, and the other end of the resistor R1 is grounded, if only the resistor is in the acquisition module 02, the voltage and the current flowing through the resistor R1 are synchronous, but the current hysteresis voltage of the control module 03 leads to the current hysteresis voltage in the whole rapid detection current control circuit, and even if the acquisition module 02 is added with a proper inductor to form an inductive reactance, the current hysteresis voltage designed to be inductive reactance is at least smaller than the voltage hysteresis current of the control module, so that the superposed current lead voltage of the acquisition module 02 and the control module 03 can lead the detection circuit to detect the current in advance.
The starting module 01 is an N-type MOS tube or an NPN triode, the drain electrode of the N-type MOS tube is connected with a VCC power supply, the grid electrode of the N-type MOS tube is connected with one end of the control module, the source electrode of the N-type MOS tube is connected with the other end of the control module, specifically, when the drain electrode of the MOS tube is conducted with the grid electrode, drain current of the N-type MOS tube flows to the source electrode, current further flows through an inductor L1 and a resistor R1, current is delayed by voltage at the moment, then the control module receives voltage from the acquisition circuit, voltage in the control module is delayed by current, so that current in the acquisition module and current in the control module are superposed together to generate voltage which is superposed with voltage in the control module, when the voltage in the control module is smaller than the threshold voltage in the control module, the control module can turn off the starting module, the current control circuit is not current rapidly detected at the moment, and a post-stage or a pre-stage circuit of the current control circuit is rapidly detected.
Specifically, one end of the control module is electrically connected with the grid electrode of the N-type MOS tube, and the other end of the control module is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube.
Referring to fig. 2, fig. 2 is a schematic diagram of a control module according to an embodiment of the utility model;
Unlike embodiment 1, since the N-type MOS transistor is turned on at a high level, when the current is not greater than the preset voltage, the voltage comparator outputs a high level, so that the N-type MOS transistor is turned on, and when the voltage is detected, the voltage is lower than the preset voltage, and a low level is output, resulting in the N-type MOS transistor being turned on.
The upper end of the voltage comparator is connected with the VDD voltage, and the lower end of the voltage comparator is connected with the ground.
The negative electrode input end VIN-of the voltage comparator is connected with one end of the acquisition module in an inscription mode, and the positive electrode input end VIN+ of the voltage comparator is connected with the other end VREF of the starting module in an inscription mode.
The control module 03 comprises a voltage comparator and a resistor component; the first input end of the voltage comparator is connected with the grid electrode of the N-type MOS tube; the second input end of the voltage comparator is connected with an external preset voltage; the resistor assembly has a first output and a second output; the input end of the resistance component is connected with the output end of the voltage comparator, the first output end of the resistance component is connected to the VCC power supply, and the second output end of the resistance component is connected between the inductor L1 and the N-type MOS tube. The resistor assembly comprises a resistor R2 and a resistor R3, one end of the resistor R2 is connected to a VCC power supply, the other end of the resistor is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube, one end of the resistor R3 is electrically connected with the output end of the voltage comparator, and the other end of the resistor R3 is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube; specifically, when the first input end of the voltage comparator receives current from the source electrode of the N-type MOS tube, the voltage of the voltage comparator at the moment is compared with the preset voltage of the voltage comparator, when the voltage of the voltage comparator at the moment is smaller than the preset voltage, the N-type MOS tube is closed, and the rapid detection current control circuit at the moment is closed timely, so that the operation of the front-stage or rear-stage equipment is prevented from being influenced.
The utility model also provides a detection circuit, which comprises the rapid detection current control circuit in any embodiment.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (9)
1. A fast sense current control circuit, comprising:
Opening the module;
The device comprises an acquisition module, a starting module and a connecting module, wherein one end of the acquisition module is connected with one end of the starting module, and the other end of the acquisition module is grounded;
The control module is connected between the starting module and the acquisition module at one end, and is electrically connected with the acquisition module at the other end;
The starting module is used for controlling the on or/and off of the acquisition module, the acquisition module is used for acquiring the current output by the starting module, the control module is used for receiving the output voltage signal of the acquisition module and judging whether the output voltage exceeds the preset voltage, and if the output voltage is smaller than the preset voltage, the starting module is turned off.
2. The rapid detection current control circuit of claim 1, wherein: the acquisition module comprises:
The inductor L1, one end of the inductor L1 is electrically connected with one end of the opening module;
And one end of the resistor R1 is electrically connected with the other end of the inductor L1, and one end of the resistor R1 is grounded.
3. The rapid detection current control circuit of claim 1, wherein: the starting module is an N-type MOS tube or an NPN triode.
4. A fast sense current control circuit of claim 3, wherein: the drain electrode of the N-type MOS tube is connected with a VCC power supply, the grid electrode of the N-type MOS tube is connected with one end of the control module, and the source electrode of the N-type MOS tube is connected with the other end of the control module.
5. A fast sense current control circuit of claim 3, wherein: the acquisition module comprises:
The inductor L1, one end of the inductor L1 is electrically connected with the source electrode of the N-type MOS tube;
and one end of the resistor R1 is electrically connected with the other end of the inductor L1, and the other end of the resistor R1 is grounded.
6. The rapid detection current control circuit of claim 5, wherein: one end of the control module is electrically connected with the grid electrode of the N-type MOS tube, and the other end of the control module is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube.
7. The rapid detection current control circuit of claim 5, wherein: the control module includes:
The first input end of the voltage comparator is connected between the source electrode of the N-type MOS tube and the input end of the inductor, the second input end of the voltage comparator is connected with external preset voltage, and the output end of the voltage comparator is connected with the grid electrode of the N-type MOS tube;
A resistor assembly having a first output and a second output; the input end of the resistance component is connected with the output end of the voltage comparator, the first output end of the resistance component is connected to the VCC power supply, and the second output end of the resistance component is connected between the inductor L1 and the N-type MOS tube.
8. The rapid detection current control circuit of claim 7, wherein: the resistor assembly includes:
One end of the resistor R2 is connected to the VCC power supply, and the other end of the resistor is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube;
And one end of the resistor R3 is electrically connected with the output end of the voltage comparator, and the other end of the resistor R3 is connected between the input end of the inductor L1 and the source electrode of the N-type MOS tube.
9. A detection circuit comprising the rapid detection current control circuit of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323273427.2U CN221261108U (en) | 2023-12-01 | 2023-12-01 | Control circuit for rapidly detecting current and detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323273427.2U CN221261108U (en) | 2023-12-01 | 2023-12-01 | Control circuit for rapidly detecting current and detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221261108U true CN221261108U (en) | 2024-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323273427.2U Active CN221261108U (en) | 2023-12-01 | 2023-12-01 | Control circuit for rapidly detecting current and detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221261108U (en) |
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2023
- 2023-12-01 CN CN202323273427.2U patent/CN221261108U/en active Active
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