CN205647470U - Drive and control circuit with overcurrent protection and open circuit protection - Google Patents
Drive and control circuit with overcurrent protection and open circuit protection Download PDFInfo
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- CN205647470U CN205647470U CN201620315994.0U CN201620315994U CN205647470U CN 205647470 U CN205647470 U CN 205647470U CN 201620315994 U CN201620315994 U CN 201620315994U CN 205647470 U CN205647470 U CN 205647470U
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Abstract
The utility model relates to a drive and control circuit with overcurrent protection and open circuit protection, including bridge rectifier module, pulse constant current module, segmentation constant current output module and anti -interference module, the alternating voltage of input loops through bridge rectifier module, pulse constant current module, segmentation constant current output module and anti -interference module input to an electric current protective film piece, electric current protective film piece is connected between anti -interference module and load, the load still be connected with the open circuit protection module. Adopting the drive and control circuit with overcurrent protection and open circuit protection of this kind of structure, through setting up overcurrent protection and open circuit protection, carrying out multiple protection to drive and control circuit and load, circuit structure is simple, has saved the cost, has prolonged the life of drive and control circuit and load, has still increased excess temperature protective film piece and anti -interference module in addition, makes driven load job stabilization reliable, has more extensive range of application.
Description
Technical field
This utility model relates to technical field of integrated circuits, particularly relates to drive control circuit technical field, specifically refers to a kind of driving control circuit with overcurrent protection and open-circuit-protection.
Background technology
In society, various different electrical equipments use more and more extensive in life, and the life with people is closely bound up.Due to during the use of electrical equipment; often due to the self reason of the main circuit of equipment or load-reason cause electric current excessive; if excessive not being protected by of electric current controls; on the one hand the damage of equipment self is easily caused; on the other hand fire hazardous etc. is held, so that personal safety and public property are by huge threat.Even if electric current is excessive does not cause instant destructive damage, also the life-span of electronic devices and components various in electrical equipment can be impacted, greatly reduce the service life of electrical equipment.In the prior art; although typically driving control circuit to have employed constant-current driving control mode; yet with the impact of uncontrollable and other factors using environment, still easily cause over-current phenomenon avoidance, it is therefore desirable in driving control circuit, increase a kind of current protection mechanism.
And during the use of electrical equipment, often there is also another kind of potential safety hazard, if the load elements on the most a certain load branch occurs in that open circuit, then this load branch will appear from abnormal overvoltage phenomenon, and then affects the work of other load branch.Accordingly, it would be desirable to increase the opened circuit protection mechanism of a kind of load in driving control circuit.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of was capable of stream and open-circuit-protection, simple in construction, has the driving control circuit with overcurrent protection and open-circuit-protection of broader applications scope.
To achieve these goals, the driving control circuit with overcurrent protection and open-circuit-protection of the present utility model has a following composition:
nullThis has the driving control circuit of overcurrent protection and open-circuit-protection，It is mainly characterized by，Described circuit includes bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module，The alternating voltage of input passes sequentially through described bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module input to an overcurrent protection module，Described overcurrent protection module includes resistance R1、Resistance R2、Comparing unit and the first on-off controller，Resistance R1 is connected between the outfan of described immunity module and first end of resistance R2，The second end ground connection of resistance R2，First end of resistance R2 is also attached to the first input end of comparing unit，Second input of described comparing unit inputs the first preset reference voltage，Outfan and first on-off controller of described comparing unit are connected，The first described on-off controller is connected between described immunity module and load，Described load is also associated with open-circuit-protection module.
It is preferred that described overcurrent protection module also includes that amplifier, described amplifier are connected between first end of resistance R2 and the first input end of described comparing unit.
More preferably, described comparing unit includes the first comparator and the second comparator, the first described comparator and the second comparator are connected in parallel, and positive input is all connected to the outfan of described amplifier, negative input all inputs the first preset reference voltage, and the first described comparator and the outfan of the second comparator are all connected with the first described on-off controller.
Preferably, described open-circuit-protection module includes a capacitor, resistance R3, resistance R4, 3rd comparator and the second on-off controller, identical with a pair load branch polarity respectively two ends, described capacitor two ends are connected, the two ends of described capacitor connect first end of resistance R3 and first end of resistance R4 respectively, the positive input of second end input the 3rd comparator of described resistance R3, the second end ground connection of described resistance R4, the reverse input end of the 3rd described comparator inputs the second preset reference voltage, outfan and second on-off controller of the 3rd described comparator are connected.
More preferably, the equal ground connection in another two ends that the polarity of a pair described load branch is identical or be respectively connecting to same default common electric voltage.
It is preferred that described immunity module includes filter, the output of described multi-stage constant current output module is inputted to the most described overcurrent protection module by described filter.
More preferably, described filter includes filter unit and harmonic wave shortwave unit, and the output of described multi-stage constant current output module passes sequentially through described filter unit and the input of harmonic wave shortwave unit to described overcurrent protection module.
More preferably, described immunity module also includes that optocoupler, described optocoupler are connected between described multi-stage constant current output module and filter.
It is preferred that the described circuit also section of including biasing module and section biasing control module, described section biasing control module is connected between described section biasing module and bridge rectifier module, and described section biasing module is connected with described pulse constant current module.
It is preferred that described circuit also includes that overheat protector module, described overheat protector module are connected between described bridge rectifier module and pulse constant current module.
Have employed the driving control circuit with overcurrent protection and open-circuit-protection in this utility model, have the advantages that
(1) in constant-current driving control circuit, overcurrent protection module is added; wherein overcurrent protection module uses simple structure and less components and parts i.e. to achieve the overcurrent protection driving control circuit; provide cost savings; prevent the accident that the circuit components that causes because electric current is excessive is aging or more serious, extend the service life of powered electrical equipment；
(2) load end in constant-current driving control circuit adds open-circuit-protection module; wherein open-circuit-protection module uses simple structure and less components and parts i.e. to achieve the open-circuit-protection to load end; provide cost savings; prevent load branch open circuit from the work of other branch roads being impacted, it is ensured that the normal work of powered electrical equipment；
(3) in constant-current driving control circuit, immunity module is further increased, filter includes filter unit and harmonic wave short circuit current, while wave filter filters unwanted interference signal, harmonic wave shortwave unit has harmonic wave effect, prevent loop from disturbing, further increasing the capacity of resisting disturbance of circuit, can avoid interference signal and make the situation of controllable silicon service life reduction, it makes loaded work piece reliable and stable；
(4) provide bias current by constant-current driving control circuit to thermal-shutdown circuit, overheat protector electric current ensure the normal work of load, it is adaptable to the driving control circuit of all kinds and application scenario, it is adaptable to the large-scale promotion application on market.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the driving control circuit with overcurrent protection and open-circuit-protection of the present utility model.
Fig. 2 is the circuit structure diagram of overcurrent protection module of the present utility model.
Fig. 3 is the circuit structure diagram of open-circuit-protection module of the present utility model.
Detailed description of the invention
In order to more clearly describe technology contents of the present utility model, conduct further description below in conjunction with specific embodiment.
nullFor above-mentioned purpose，As shown in Figure 1，The driving control circuit with overcurrent protection and open-circuit-protection of the present utility model includes bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module，The alternating voltage of input passes sequentially through described bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module input to an overcurrent protection module，As shown in Figure 2，Described overcurrent protection module includes resistance R1、Resistance R2、Comparing unit and the first on-off controller，Resistance R1 is connected between the outfan of described immunity module and first end of resistance R2，The second end ground connection of resistance R2，First end of resistance R2 is also attached to the first input end of comparing unit，Second input of described comparing unit inputs the first preset reference voltage，Outfan and first on-off controller of described comparing unit are connected，The first described on-off controller is connected between described immunity module and load，Described load is also associated with open-circuit-protection module.
In one preferably embodiment, described overcurrent protection module also includes that amplifier, described amplifier are connected between first end of resistance R2 and the first input end of described comparing unit, is amplified the voltage signal of sampling.
In one more preferably embodiment, described comparing unit includes the first comparator and the second comparator, the first described comparator and the second comparator are connected in parallel, and positive input is all connected to the outfan of described amplifier, negative input all inputs the first preset reference voltage, the first described comparator and the outfan of the second comparator are all connected with the first described on-off controller, by resistance, the electric current of sampling is converted into voltage signal, by comparator, the comparison of voltage signal and the first preset reference voltage is controlled the action of on-off controller.
As shown in Figure 3, in one preferably embodiment, described open-circuit-protection module includes a capacitor, resistance R3, resistance R4, 3rd comparator and the second on-off controller, identical with a pair load branch polarity respectively two ends, described capacitor two ends are connected, the two ends of described capacitor connect first end of resistance R3 and first end of resistance R4 respectively, the positive input of second end input the 3rd comparator of described resistance R3, the second end ground connection of described resistance R4, the reverse input end of the 3rd described comparator inputs the second preset reference voltage, outfan and second on-off controller of the 3rd described comparator are connected, by comparator, the voltage signal of sampling and the comparison of the second preset reference voltage are controlled further the action of on-off controller.
In one more preferably embodiment, the another two ends that the polarity of a pair described load branch is identical need have identical magnitude of voltage, can be by equal for another two ends ground connection or be respectively connecting to same default common electric voltage.
In one preferably embodiment, described immunity module includes filter, and the output of described multi-stage constant current output module is inputted to the most described overcurrent protection module by described filter.
In one more preferably embodiment, described filter includes filter unit and harmonic wave shortwave unit, and the output of described multi-stage constant current output module passes sequentially through described filter unit and the input of harmonic wave shortwave unit to described overcurrent protection module.
In one more preferably embodiment, described immunity module also includes that optocoupler, described optocoupler are connected between described multi-stage constant current output module and filter.
In one preferably embodiment, the described circuit also section of including biasing module and section biasing control module, described section biasing control module is connected between described section biasing module and bridge rectifier module, and described section biasing module is connected with described pulse constant current module.
In one preferably embodiment; described circuit also includes overheat protector module; described overheat protector module is connected between described bridge rectifier module and pulse constant current module, and realize load further crosses temperature control, more fully protects driving control circuit and load.
In the technical scheme of the driving control circuit with overcurrent protection and open-circuit-protection of the present utility model; each wherein included function device and modular device all can be corresponding to actual particular hardware circuit structures; therefore these modules and unit merely with hardware circuit it is achieved that need not assist and i.e. can be automatically obtained corresponding function with the specific software that controls.
Have employed the driving control circuit with overcurrent protection and open-circuit-protection in this utility model, have the advantages that
(1) in constant-current driving control circuit, overcurrent protection module is added; wherein overcurrent protection module uses simple structure and less components and parts i.e. to achieve the overcurrent protection driving control circuit; provide cost savings; prevent the accident that the circuit components that causes because electric current is excessive is aging or more serious, extend the service life of powered electrical equipment；
(2) load end in constant-current driving control circuit adds open-circuit-protection module; wherein open-circuit-protection module uses simple structure and less components and parts i.e. to achieve the open-circuit-protection to load end; provide cost savings; prevent load branch open circuit from the work of other branch roads being impacted, it is ensured that the normal work of powered electrical equipment；
(3) in constant-current driving control circuit, immunity module is further increased, filter includes filter unit and harmonic wave short circuit current, while wave filter filters unwanted interference signal, harmonic wave shortwave unit has harmonic wave effect, prevent loop from disturbing, further increasing the capacity of resisting disturbance of circuit, can avoid interference signal and make the situation of controllable silicon service life reduction, it makes loaded work piece reliable and stable；
(4) provide bias current by constant-current driving control circuit to thermal-shutdown circuit, overheat protector electric current ensure the normal work of load, it is adaptable to the driving control circuit of all kinds and application scenario, it is adaptable to the large-scale promotion application on market.
In this description, this utility model is described with reference to its specific embodiment.But it is clear that still may be made that various modifications and alterations are without departing from spirit and scope of the present utility model.Therefore, specification and drawings is regarded in an illustrative, rather than a restrictive.
Claims (10)
- null1. a driving control circuit with overcurrent protection and open-circuit-protection，It is characterized in that，Described circuit includes bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module，The alternating voltage of input passes sequentially through described bridge rectifier module、Pulse constant current module、Multi-stage constant current output module and immunity module input to an overcurrent protection module，Described overcurrent protection module includes resistance R1、Resistance R2、Comparing unit and the first on-off controller，Resistance R1 is connected between the outfan of described immunity module and first end of resistance R2，The second end ground connection of resistance R2，First end of resistance R2 is also attached to the first input end of comparing unit，Second input of described comparing unit inputs the first preset reference voltage，Outfan and first on-off controller of described comparing unit are connected，The first described on-off controller is connected between described immunity module and load，Described load is also associated with open-circuit-protection module.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 1; it is characterized in that; described overcurrent protection module also includes that amplifier, described amplifier are connected between first end of resistance R2 and the first input end of described comparing unit.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 2; it is characterized in that; described comparing unit includes the first comparator and the second comparator; the first described comparator and the second comparator are connected in parallel; and positive input is all connected to the outfan of described amplifier; negative input all inputs the first preset reference voltage, and the first described comparator and the outfan of the second comparator are all connected with the first described on-off controller.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 1, it is characterized in that, described open-circuit-protection module includes a capacitor, resistance R3, resistance R4, 3rd comparator and the second on-off controller, identical with a pair load branch polarity respectively two ends, described capacitor two ends are connected, the two ends of described capacitor connect first end of resistance R3 and first end of resistance R4 respectively, the positive input of second end input the 3rd comparator of described resistance R3, the second end ground connection of described resistance R4, the reverse input end of the 3rd described comparator inputs the second preset reference voltage, outfan and second on-off controller of the 3rd described comparator are connected.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 4, it is characterised in that the equal ground connection in another two ends that the polarity of a pair described load branch is identical or be respectively connecting to same default common electric voltage.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 1; it is characterized in that; described immunity module includes filter, and the output of described multi-stage constant current output module is inputted to the most described overcurrent protection module by described filter.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 6; it is characterized in that; described filter includes filter unit and harmonic wave shortwave unit, and the output of described multi-stage constant current output module passes sequentially through described filter unit and the input of harmonic wave shortwave unit to described overcurrent protection module.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 6, it is characterised in that described immunity module also includes that optocoupler, described optocoupler are connected between described multi-stage constant current output module and filter.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 1; it is characterized in that; the described circuit also section of including biasing module and section biasing control module; described section biasing control module is connected between described section biasing module and bridge rectifier module, and described section biasing module is connected with described pulse constant current module.
- The driving control circuit with overcurrent protection and open-circuit-protection the most according to claim 1, it is characterised in that described circuit also includes that overheat protector module, described overheat protector module are connected between described bridge rectifier module and pulse constant current module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315994.0U CN205647470U (en) | 2016-04-16 | 2016-04-16 | Drive and control circuit with overcurrent protection and open circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315994.0U CN205647470U (en) | 2016-04-16 | 2016-04-16 | Drive and control circuit with overcurrent protection and open circuit protection |
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| Publication Number | Publication Date |
|---|---|
| CN205647470U true CN205647470U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620315994.0U Active CN205647470U (en) | 2016-04-16 | 2016-04-16 | Drive and control circuit with overcurrent protection and open circuit protection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535396A (en) * | 2016-11-04 | 2017-03-22 | 辉芒微电子（深圳）有限公司 | Anti-interference constant-current LED drive circuit |
| CN107070362A (en) * | 2017-03-24 | 2017-08-18 | 成都佰思汇信科技有限责任公司 | Anti-jamming motor drive circuit with current protection |
-
2016
- 2016-04-16 CN CN201620315994.0U patent/CN205647470U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535396A (en) * | 2016-11-04 | 2017-03-22 | 辉芒微电子（深圳）有限公司 | Anti-interference constant-current LED drive circuit |
| CN107070362A (en) * | 2017-03-24 | 2017-08-18 | 成都佰思汇信科技有限责任公司 | Anti-jamming motor drive circuit with current protection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Drive and control circuit with overcurrent protection and open circuit protection Effective date of registration: 20181205 Granted publication date: 20161012 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: WUXI SIRISE MICROELECTRONICS CO., LTD. Registration number: 2018990001156 |