CN206611612U - A kind of proximity magnetic induction switch control chip - Google Patents
A kind of proximity magnetic induction switch control chip Download PDFInfo
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- CN206611612U CN206611612U CN201720218249.9U CN201720218249U CN206611612U CN 206611612 U CN206611612 U CN 206611612U CN 201720218249 U CN201720218249 U CN 201720218249U CN 206611612 U CN206611612 U CN 206611612U
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Abstract
The utility model is related to approach switch technical field, the utility model provides a kind of proximity magnetic induction switch control chip, and proximity magnetic induction switch control chip includes voltage regulator module, control module, output type detection module, the first gate-controlled switch and the second gate-controlled switch；When connecting load between connection load or signal output part and earth terminal between the voltage input end and signal output part of output type detection module detection proximity magnetic induction switch control chip, testing result is sent to control module；Control module controls the first gate-controlled switch or the conducting of the second gate-controlled switch to be worked with driving load according to testing result, the highly integrated multiple modules of proximity magnetic induction switch control chip, reduce the design size and wiring space of chip, can automatic identification connect load type and automatic selector switch circuit structure, improve flexibility.
Description
Technical field
The utility model is related to approach switch technical field, more particularly to a kind of proximity magnetic induction switch control core
Piece.
Background technology
Traditional proximity sensor, is mainly used in industrial automation equipment, streamline automatic detection etc..It is related to
Inductance approach switch, safety anti-explosive formula proximity switch, inductance analogy amount output proximity switch, magnetic induction proximity switch and electricity
Appearance formula proximity switch.No matter the proximity sensor of which kind of pattern, generally comprise three parts, one is reception or produces sensing
The power pack of signal section；Two be the main circuit part of identifying processing；Three be as on-off action open or close by
Control switching device part.
Power pack for receiving or producing induced signal part, typically there is multiple technologies scheme, Yi Zhongji at present
Art scheme is not do the processing of any power supply, directly the main power source of input is powered for sensor assembly, this way must be selected
With the device (voltage x current withstands shocks enough) of corresponding specification, while device volume size disclosure satisfy that power consumption requirements, integrally
Size is bigger than normal, applied to simple low cost, the occasion of low required precision.Another technical scheme is power pack by separating member
Device, does special decompression processing or linear voltage stabilization processing, meets high accuracy, high stability and the application requirement of low-power consumption.
For the main circuit part of identifying processing, mainly to the timely sampling processing of induced signal and drive signal is given to
Main switching device, will accomplish the accurate quick of sampling, and have enough driving force driving load runnings.
For the controlled switching devices part opened, closed as on-off action, according to different application requirements and application
Environment, also there is a variety of processing modes.1, simply using transistor drive circuit, namely conventional independent PNP or NPN triode
Do main switching device；2, the PNP or NPN triode synthesis application of integrated form, but wiring is must distinguish between, substantially it is still single
One can only correspond to the application of given load；3, mechanically there are the mode switching control of direct contact, such as spring leaf or powered
Coil, closes or opens in the presence of induction force, induction force disappears, and switching device is in spring or similar inertia force
Original state is automatically restored under effect.
Receive or produce the power pack of induced signal part, the main circuit part of identifying processing and make as switch
Combined with these three parts of controlled switching devices part opened, closed, and according to actual application requirement, be made in regulation
Wiring board on, just constitute the application structure framework of conventional approach switch.
Existing application scheme is reception in structure or produces power pack, signal identification and the place of induced signal
The main circuit part of reason and these three parts of controlled switching devices opened or closed as on-off action are constituted, and are
It is made up of discrete component, circuit stray is in disorder.
The load of output includes NPN type driving load structure and positive-negative-positive driving load structure, and current application scheme is necessary
, otherwise can not driven targetedly using the circuit structure of corresponding driving structure on the basis of loadtype is understood
Work.The support structures of such as NPN type, corresponding approach switch drive circuit must be the drive circuit of NPN type, positive-negative-positive
Support structures, corresponding approach switch drive circuit must be the drive circuit of positive-negative-positive, it is impossible to realize that same circuit can
With the load of two kinds of structures of compatible driving.
Utility model content
The purpose of this utility model is to provide a kind of proximity magnetic induction switch control chip, it is intended to solve prior art
Present in can not realize the problem of same circuit can be with the load of two kinds of structures of compatible driving.
The utility model is achieved in that first aspect provides a kind of proximity magnetic induction switch control chip, described
The voltage output end of proximity magnetic induction switch control chip connects the voltage input end of hall device, the proximity magnetic induction
The signal input part of switch control chip connects the signal output part of the hall device, and the control chip is adjusted including voltage
Module, control module, output type detection module, the first gate-controlled switch and the second gate-controlled switch；
The control module connect respectively the control end of the voltage regulator module, the output type detection module it is defeated
Go out the control end of end, the control end of first gate-controlled switch and second gate-controlled switch, first gate-controlled switch
The voltage input end of input, the first input end of the output type detection module and the voltage regulator module connects simultaneously altogether
Constitute the voltage input end of the proximity magnetic induction switch control chip, the output end of first gate-controlled switch, described
Second input of the output end of two gate-controlled switches and the output type detection module connects and constitutes the proximity magnetic altogether
The signal output part of inductive switch control chip, the input of second gate-controlled switch and the output type detection module
3rd input is connected to ground and constitutes the earth terminal of the proximity magnetic induction switch control chip, the voltage regulator module altogether
Output end be the proximity magnetic induction switch control chip voltage output end, the input of the control module is described
The signal input part of proximity magnetic induction switch control chip；
The voltage regulator module is exported after input voltage is adjusted and powered to hall device；
The output type detection module detects the voltage input end and letter of the proximity magnetic induction switch control chip
The signal output part and the earth terminal of connection load or the proximity magnetic induction switch control chip between number output end
Between connect load when, testing result is sent to the control module；
The induced signal that the control module is sent to the hall device is handled, and according to the testing result control
Make first gate-controlled switch or second gate-controlled switch conducting is worked with driving load.
With reference in a first aspect, as the first embodiment of first aspect, the proximity magnetic induction switch controls core
Piece also includes LED drive module, and the input of the LED drive module connects the output end of the control module, and the LED drives
The output end of dynamic model block connects the first LED and the second LED；
When the controller module controls the first gate-controlled switch conducting, the LED drive module is driven to make described the
One LED works；
When the controller module controls the second gate-controlled switch conducting, the LED drive module is driven to make described the
Two LEDs work.
With reference in a first aspect, as second of embodiment of first aspect, the output type detection module includes the
Three resistance, the 4th resistance and comparator, the first end of the 3rd resistor are first defeated for the output type detection module
Enter end, the second end of the 3rd resistor connects the first end of the 4th resistance and the in-phase input end of the comparator, institute
The inverting input for stating comparator is the second input of the output type detection module, and the second end of the 4th resistance is
3rd input of the output type detection module, the output end of the comparator is the defeated of the output type detection module
Go out end.
With reference in a first aspect, as the third embodiment of first aspect, the control module detects output current
When abnormal, the LED drive module is driven first LED or second LED is in flicker state, lasting place
When protecting working condition preset time and detecting the induced signal, first gate-controlled switch or described is reopened
Second gate-controlled switch.
With reference in a first aspect, as the first embodiment of first aspect, the proximity magnetic induction switch controls core
Piece also includes low pressure locking module, and the input of the low pressure locking module connects the voltage input end of the control chip, institute
State the input of the output end link control module of low pressure locking module；
When between the voltage input end and earth terminal of the control chip connect power supply, the output end of the control chip with
When connection load between power supply or the voltage input end and earth terminal of the control chip is connected between earth terminal, the low pressure
Locking module is in the lock state, and the control module controls the voltage regulator module to be stopped.
The utility model embodiment provides a kind of proximity magnetic induction switch control chip, and the control chip is highly integrated more
Individual module, simplifies external circuit, reduces the design size area and wiring space of application, has better met modern Application
The actual requirement of integrated miniaturization, and can automatic identification connect load type and automatic selector switch circuit structure,
Can two kinds of output loading types of compatibility NPN and PNP, improve flexibility and the convenience of application, and can realize high-precision
Degree, low-power consumption, the application requirement of highly integrated, many defencive functions and Width funtion application.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for proximity magnetic induction switch control chip that a kind of embodiment of the utility model is provided
Figure；
Fig. 2 is that a kind of structure for proximity magnetic induction switch control chip that another embodiment of the utility model is provided is shown
It is intended to；
Fig. 3 is a kind of working condition for proximity magnetic induction switch control chip that a kind of embodiment of the utility model is provided
Schematic diagram；
Fig. 4 is a kind of working condition for proximity magnetic induction switch control chip that a kind of embodiment of the utility model is provided
Schematic diagram；
Fig. 5 is a kind of partial circuit for proximity magnetic induction switch control chip that a kind of embodiment of the utility model is provided
Figure；
Fig. 6 is a kind of output current for proximity magnetic induction switch control chip that a kind of embodiment of the utility model is provided
Oscillogram；
Fig. 7 is that a kind of structure for proximity magnetic induction switch control chip that another embodiment of the utility model is provided is shown
It is intended to；
Fig. 8 is a kind of controlling party for proximity magnetic induction switch control chip that another embodiment of the utility model is provided
The flow chart of method.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
In order to illustrate the technical solution of the utility model, illustrated below by specific embodiment.
The utility model embodiment provides a kind of proximity magnetic induction switch control chip 10, as shown in figure 1, proximity magnetic
The voltage input end of the voltage output end VOUT connections hall device 20 of inductive switch control chip 10, proximity magnetic induction switch
The signal output part of the signal input part SIN connections hall device 20 of control chip 10, proximity magnetic induction switch control chip
10 include voltage regulator module 102, control module 101, output type detection module 103, the first gate-controlled switch 104 and second
Gate-controlled switch 105；
Control module 101 connects control end, the output of output type detection module 103 of voltage regulator module 102 respectively
The control end at end, the control end of the first gate-controlled switch 104 and the second gate-controlled switch 105, the input of the first gate-controlled switch 104
The voltage input end at end, the first input end of output type detection module 103 and voltage regulator module 102 connects and constitutes institute altogether
State the voltage input end VIN of proximity magnetic induction switch control chip 10, it is the output end of the first gate-controlled switch 104, second controllable
The output end of switch 105 and the second input of output type detection module 103 connect and constitute proximity magnetic induction switch altogether
The signal output part SOUT of control chip 10, the input of the second gate-controlled switch 105 and the 3rd of output type detection module 103 the
Input is connected to ground and constitutes the earth terminal GND of proximity magnetic induction switch control chip 10 altogether, voltage regulator module 102 it is defeated
Go out voltage output end VOUT of the end for proximity magnetic induction switch control chip 10, the input of control module 101 is proximity
The signal input part SIN of magnetic induction switch control chip 10；
Voltage regulator module 102 is exported after input voltage is adjusted powers to hall device 20；
Between the voltage input end VIN and signal output part SOUT of the detection control chip 10 of output type detection module 103
When connecting load between connection load or the signal output part SOUT and earth terminal GND of control chip 10, testing result is sent out
Give control module 101；
The induced signal that control module 101 is sent to hall device 20 is handled, and controls first according to judged result
The gate-controlled switch 105 of gate-controlled switch 104 or second is turned on to be worked with driving load.
In the utility model embodiment, voltage input end VIN and earth terminal GND the connection power supply of control chip 10, electricity
The positive pole that input VIN is dc source is pressed, earth terminal GND is the negative pole of dc source, and the voltage range of input voltage is
2.7-36V, compatible most of supply district on the market at present, substantially without going to consider voltage range to system application again
Limitation influence.
In the utility model embodiment, voltage regulator module 102 is inside proximity magnetic induction switch control chip 10
Voltage-regulating circuit, be mainly used in powering to outside Hall sensor, input voltage 2.7-36V changed into suitable confession
Piezoelectric voltage is simultaneously exported from voltage output end VOUT, and voltage output end VOUT driving current is arranged on 10mA, maximum overcurrent protection
50mA.By the type kind that voltage output end connects device is various, voltage is each different, and output voltage is by setting feedback end
The resistance value that VFB is connected is come the various magnitudes of voltage that are needed, without necessarily using different voltage-regulating circuits again,
Because voltage regulator module can use various voltage transformation modules of the prior art, its concrete structure is no longer gone to live in the household of one's in-laws on getting married herein
State.
In the utility model embodiment, the first gate-controlled switch 104 and the second gate-controlled switch 105 can use metal-oxide-semiconductor, lead to
The combination application for the metal-oxide-semiconductor crossed inside the control chip 10 of proximity magnetic induction switch control chip 10, improves response speed, drop
Low this province of device power consumption, and be designed to support to the smaller conduction loss of bigger rated current using metal-oxide-semiconductor, wherein,
Metal-oxide-semiconductor can be PMOS or NMOS tube, as a kind of embodiment, the first gate-controlled switch 104 and the second gate-controlled switch 105
Can use can be respectively adopted PMOS and NMOS tube, wherein, the controlled switch of proximity magnetic induction switch control chip 10
The source electrode output end of PMOS and the drain electrode input of pull-down NMOS pipe are pulled up in device output end SOUT connection chip internals, is led to
The PMOS and the combination application of NMOS tube crossed inside proximity magnetic induction switch control chip 10, improve response speed, and
And PMOS and NMOS tube can reach the application feelings of compatible different loads according to the connection of load, corresponding selection conducting
Condition.Wherein, two metal-oxide-semiconductors use pressure-resistant 40V electric currents 0.5A specification, and the practical application for conventional maximum 0.2A is reserved
Enough surpluses.
For output type detection module 103, by setting output type detection module 103, there is control chip 10
Automatic load access detection function, you can to detect the port position of load access proximity magnetic induction switch control chip 10,
It is defeated due to proximity magnetic induction switch control chip 10 when between load access signal output part SOUT and earth terminal GND
Go out to hold SOUT to be output as high-impedance state, and be biased in by internal circuit near VIN/2 current potentials, when load accesses output end SOUT and connects
When between ground terminal GND, equivalent to one impedance of access in parallel between output end SOUT and earth terminal GND, so as to cause output
SOUT current potential is held to be less than VIN/2 current potential, when between load access voltage input end VIN and output end SOUT, equivalent to
One impedance of access in parallel between voltage input end VIN and output end SOUT, so as to cause output end SOUT current potential to be higher than
VIN/2 current potential, therefore, by detection output SOUT current potential, so as to detect the position of load access.
Specifically, as a kind of embodiment, as shown in figure 5, output type detection module 103 include 3rd resistor R3,
4th resistance R4 and comparator U1,3rd resistor R3 first end are the first input end of output type detection module 103, the
Three resistance R3 the second end connects the 4th resistance R4 first end and comparator U1 in-phase input end, and comparator U1's is anti-phase defeated
Enter second input of the end for output type detection module 103, the 4th resistance R4 the second end is output type detection module 103
The 3rd input, comparator U1 output end is the output end of output type detection module 103.
Further, proximity magnetic induction switch control chip 10 also includes LED drive module 106, LED drive module
The output end of 106 input link control module 101, output end connection the first LED and second of LED drive module 106
LED；
When controller module controls the conducting of the first gate-controlled switch 104, driving LED drive module 106 makes the first LED work
Make；
When controller module controls the conducting of the second gate-controlled switch 105, driving LED drive module 106 makes the second LED work
Make.
Specifically, after load input type automatic detection is finished, the first set LED and second can be passed through
LED shows the use state of the first gate-controlled switch and the second gate-controlled switch, specifically, the first gate-controlled switch and second controllable is opened
When NMOS tube and PMOS is respectively adopted in pass, the specific work process of NMOS tube and PMOS is as follows：
The course of work of NMOS tube structure output is as follows：It can be set as shown in figure 3, control chip 10 is provided to hall device 20
Fixed burning voltage (error ± 2%), maximum voltage is no more than Vin-0.3V, after hall device 20 senses that action occurs,
The 2nd pin output high level of hall device 20, the input SIN of control chip 10 is connected to signal, opens NMOS tube, supplied to load
Voltage in electricity, load is about VIN-1V, and now LEDR ports can export high level, so as to light red led.
The course of work of PMOS structure output is as follows：It can be set as shown in figure 4, control chip 10 is provided to hall device 20
Fixed burning voltage (error ± 2%), maximum voltage is no more than Vin-0.3V, after hall device 20 senses that action occurs,
The 2nd pin output high level of hall device 20, the input SIN of control chip 10 is connected to signal, opens PMOS, supplied to load
Voltage in electricity, load is about VIN-1V.Now LEDG ports can export high level, so as to light green indicating lamp, specifically
, the working condition of red light or green light is as shown in the LED status table that table 1 below is provided：
| When Hall is acted | Loaded work piece is normal | Loaded work piece is abnormal (output open circuit/short circuit) |
| N tubular constructions are exported | When red, green light does not work | Red light dodges, and green light does not work |
| P tubular constructions are exported | Red light does not work, green light | Red light does not work, and green light dodges |
The LED status table of table 1
Further, referring to above-mentioned table 1, when control module 101 detects output current exception, LED drive module is driven
106 make the first LED or the second LED be in flicker state, are continuously in protection working condition preset time and detect
During induced signal, the first gate-controlled switch 104 or the second gate-controlled switch 105 are reopened.
Specifically, as shown in Figure 6：When control module 101 detects output current more than Io_peak threshold values, and maintain
After 4uS, current-limiting protection is triggered, now output current is limited in Io_limit, until output current drops to normal work
Within current range, if while control chip 10 works long hours under limited current state always, such as more than 4mS time,
So control chip 10 enters CUT-OFF patterns, by controlling gate-controlled switch to disconnect power output path, shut-in time 60mS
After, if now input SIN signal is still effective, repeat to open gate-controlled switch again, into pattern of having the hiccups repeatedly.
Further, it is low as shown in fig. 7, proximity magnetic induction switch control chip 10 also includes low pressure locking module 107
The input of locking module 107 is pressed to connect the voltage input end VIN of control chip 10, the output end of low pressure locking module 107 connects
Connect the input of control module 101；
When connecting power supply, and the letter of control chip 10 between the voltage input end VIN and earth terminal GND of control chip 10
Connect number between output end SOUT and earth terminal GND power supply or control chip 10 voltage input end VIN and earth terminal GND it
Between connect load when, low pressure locking module is in the lock state, and the control voltage adjusting module 102 of control module 101 is stopped.
Specifically, the utility model embodiment realizes anti-reverse Functional Design by setting low pressure locking module 107,
As shown in fig. 7, when control chip 10 is normally being applied, whole control chip 10 most only has three lines outwards to connect at last, point
It is not power line positive pole (VIN), power line negative pole (GND) and load output line (SOUT), and has special color line therewith
Correspond to respectively, this three lines in application process, operator due to the port corresponding to every line can not be recognized, it is possible that
The situation of wrong.Such as there are following several situations：Power line positive pole VIN and power line negative pole GND are reversed, power line positive pole VIN
With output end SOUT to changing-over, output end SOUT and power line negative pole GND is to changing-over.By setting low pressure to lock in chip internal
Module monitors voltage input end VIN is connected the situation of load with signal output part SOUT, can make the VIN/ of control chip 10
Tri- pins of SOUT/GND have anti-reverse function.
Specifically, when load is connected between output end SOUT and power line negative pole GND and power supply is connected to power line
When between positive pole VIN and power line negative pole GND, control chip is normally upper electric, and voltage regulator module 102 is started working, while defeated
Go out type detection module 103 detect load access SOUT to GND between, control module 101 from input SIN receive sensing letter
After number, PMOS is opened；Because PMOS two ends are now supply voltages, PMOS excessively streams can be detected and had the hiccups repeatedly, dodged simultaneously
Lamp indicates load abnormal, until SIN signals are dragged down or low pressure locking module etc. is completely switched off signal triggering.
When load be connected between power line positive pole VIN and output end SOUT and power supply be connected to output end SOUT with electricity
When between the line negative pole GND of source, control chip 10 is normally upper electric, and voltage regulator module 102 is opened, while Check up polarity connects to load
Enter between SOUT to VIN, control module 101 opens NMOS tube after input SIN is sent；Because NMOS tube two ends are now
Supply voltage, can detect NMOS tube excessively stream and have the hiccups repeatedly, while flashing light is indicated, until SIN signals are dragged down or low pressure lock
Cover half block etc. is completely switched off signal triggering.
When connection power supply, the output end of control chip 10 and ground connection between the voltage input end and earth terminal of control chip 10
When connection load between power supply or the voltage input end and earth terminal of control chip 10 is connected between end, control chip 10 is powered up
Afterwards, load drags down voltage input end VIN voltage, low pressure locking module detection input voltage input VIN voltage, judges low
Pressure locking module is in the lock state and can not released, and control chip does not work.
The system work schedule of the utility model embodiment is as follows：After system electrification, whether input voltage is detected first
Minimum voltage is met, under-voltage locking is released, if voltage is normal, system clock starts, voltage regulator module 102 enables work, defeated
Go out the synchronous averaging of type detection module 103 and work always, supplied after the normal work of voltage regulator module 102 to hall device 20
Electricity, after hall device 20 detects action, the SIN ends of control chip 10 are connected to signal, correct to open PMOS or NMOS
Pipe, when abnormal or open circuit occurs in system load, into protection working condition, and triggers indicator lamp and warns flicker, failure
After releasing, system recovers normal work.
Another embodiment of the utility model provides a kind of control method of proximity magnetic induction switch control chip, approaches
The voltage output end of formula magnetic induction switch control chip connects the voltage input end of hall device, the control of proximity magnetic induction switch
The signal input part of chip connects the signal output part of hall device, and control chip includes voltage regulator module, control module, defeated
Go out type detection module, the first gate-controlled switch and the second gate-controlled switch；
Control module connect respectively the control end of voltage regulator module, the output end of output type detection module, first can
Control the control end of switch and the control end of the second gate-controlled switch, input, the output type detection module of the first gate-controlled switch
First input end and the voltage input end of voltage regulator module connect altogether and constitute proximity magnetic induction switch control chip
Voltage input end, the output end of the first gate-controlled switch, the of the output end of the second gate-controlled switch and output type detection module
Two inputs connect and constitute the signal output part of proximity magnetic induction switch control chip altogether, the input of the second gate-controlled switch and
3rd input of output type detection module is connected to ground and constitutes the earth terminal of proximity magnetic induction switch control chip altogether, electricity
The output end for pressing adjusting module is the voltage output end of proximity magnetic induction switch control chip, and the input of control module is to connect
The signal input part of nearly formula magnetic induction switch control chip；
As shown in figure 8, the control method includes：
Step S101. voltage regulator modules are exported after input voltage is adjusted and powered to hall device.
Step S102. output types detection module detects the voltage input end and letter of proximity magnetic induction switch control chip
Connected between number output end between connection load or the signal output part and earth terminal of proximity magnetic induction switch control chip
During load, testing result is sent to control module.
The induced signal that step S103. control modules are sent to hall device is handled, and according to testing result control
First gate-controlled switch or the conducting of the second gate-controlled switch are worked with driving load.
Further, proximity magnetic induction switch control chip also includes LED drive module, the input of LED drive module
The output end of link control module is held, the output end of LED drive module connects the first LED and the second LED；
Control method also includes：
When step S104. controller modules control the conducting of the first gate-controlled switch, driving LED drive module makes the first LED
Work.
When step S105. controller modules control the conducting of the second gate-controlled switch, driving LED drive module makes the second LED
Work.
Further, control module detect output current it is abnormal when, driving LED drive module make the first LED or
Second LED is in flicker state, when being continuously in protection working condition preset time and detecting induced signal, reopens
First gate-controlled switch or the second gate-controlled switch.
Further, proximity magnetic induction switch control chip also include low pressure locking module, low pressure locking module it is defeated
Enter the voltage input end of end connection control chip, the input of the output end link control module of low pressure locking module；
Control method also includes：
Step S106. is when connection power supply, the output end of control chip between the voltage input end and earth terminal of control chip
When connection load between power supply or the voltage input end and earth terminal of control chip is connected between earth terminal, low pressure locking mould
Block is in the lock state, and control module control voltage adjusting module is stopped.
The utility model embodiment provides a kind of proximity magnetic induction switch control chip and its control method, the control core
The highly integrated multiple modules of piece, can automatic identification connect load type and automatic selector switch circuit structure, as needed
Sensor supply voltage is flexibly set, and the various input voltages of compatible conventional application replace traditional triode with MOSFET pipes
Do controlled switching devices, it is intended to reach high accuracy, low-power consumption is highly integrated, many defencive functions, the application of Width funtion application
It is required that.
The application mode of the unified prior art discrete device of the utility model embodiment compatibility, by most devices and work(
It can be designed by chip internal, simplify external circuit, reduce the design size area and wiring space of application, it is preferably full
The foot actual requirement of the integrated miniaturization of modern Application.
The utility model adds perfect defencive function compared with existing application technology, such as input and output it is anti-reverse
Protection, short-circuit protection of opening a way, can two kinds of output loading types of compatibility NPN and PNP, improve the flexibility and conveniently of application
Property.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, make some equivalent substitutes or obvious modification without departing from the concept of the premise utility, and performance or
Purposes is identical, should all be considered as belonging to the scope of patent protection that the utility model is determined by the claims submitted.
Claims (5)
1. a kind of proximity magnetic induction switch control chip, the voltage output end of the proximity magnetic induction switch control chip connects
The voltage input end of hall device is connect, the signal input part of the proximity magnetic induction switch control chip connects the Hall device
The signal output part of part, it is characterised in that the proximity magnetic induction switch control chip includes voltage regulator module, control mould
Block, output type detection module, the first gate-controlled switch and the second gate-controlled switch；
The control module connects the control end of the voltage regulator module, the output of the output type detection module respectively
End, the control end of the control end of first gate-controlled switch and second gate-controlled switch, first gate-controlled switch it is defeated
The voltage input end for entering end, the first input end of the output type detection module and the voltage regulator module connects and structure altogether
Into the voltage input end of the proximity magnetic induction switch control chip, the output end of first gate-controlled switch, described second
Second input of the output end of gate-controlled switch and the output type detection module connects and constitutes the proximity magnetic strength altogether
The of the signal output part of inductive switch control chip, the input of second gate-controlled switch and the output type detection module
Three inputs are connected to ground and constitute the earth terminal of the proximity magnetic induction switch control chip altogether, the voltage regulator module
Output end is the voltage output end of the proximity magnetic induction switch control chip, and the input of the control module connects to be described
The signal input part of nearly formula magnetic induction switch control chip；
The voltage regulator module is exported after input voltage is adjusted and powered to hall device；
The output type detection module detects that the voltage input end and signal of the proximity magnetic induction switch control chip are defeated
Go out end between connection load or the control chip signal output part and the earth terminal between connect load when, will detect
As a result it is sent to the control module；
The induced signal that the control module is sent to the hall device is handled, and controls institute according to the testing result
State the first gate-controlled switch or second gate-controlled switch conducting is worked with driving load.
2. proximity magnetic induction switch control chip as claimed in claim 1, it is characterised in that the proximity magnetic induction is opened
Closing control chip also includes LED drive module, and the input of the LED drive module connects the output end of the control module,
The output end of the LED drive module connects the first LED and the second LED；
When the controller module controls the first gate-controlled switch conducting, the LED drive module is driven to make the first LED
Lamp works；
When the controller module controls the second gate-controlled switch conducting, the LED drive module is driven to make the 2nd LED
Lamp works.
3. proximity magnetic induction switch control chip as claimed in claim 1, it is characterised in that the output type detects mould
Block includes 3rd resistor, the 4th resistance and comparator, and the first end of the 3rd resistor is the output type detection module
First input end, the second end of the 3rd resistor connects the same mutually defeated of the first end of the 4th resistance and the comparator
Enter end, the inverting input of the comparator is the second input of the output type detection module, the 4th resistance
Second end is the 3rd input of the output type detection module, and the output end of the comparator detects for the output type
The output end of module.
4. proximity magnetic induction switch control chip as claimed in claim 2, it is characterised in that the control module is detected
When output current is abnormal, the LED drive module is driven first LED or second LED is in flicker shape
State, is continuously in protection working condition preset time and when detecting the induced signal, reopens described first and controllable opens
Close or second gate-controlled switch.
5. proximity magnetic induction switch control chip as claimed in claim 1, it is characterised in that the proximity magnetic induction is opened
Closing control chip also includes low pressure locking module, and the voltage of the input connection control chip of the low pressure locking module is defeated
Enter end, the input of the output end link control module of the low pressure locking module；
When connection power supply, the output end of the control chip and ground connection between the voltage input end and earth terminal of the control chip
When connection load between power supply or the voltage input end and earth terminal of the control chip is connected between end, the low pressure locking
Module is in the lock state, and the control module controls the voltage regulator module to be stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218249.9U CN206611612U (en) | 2017-03-06 | 2017-03-06 | A kind of proximity magnetic induction switch control chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218249.9U CN206611612U (en) | 2017-03-06 | 2017-03-06 | A kind of proximity magnetic induction switch control chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206611612U true CN206611612U (en) | 2017-11-03 |
Family
ID=60165747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720218249.9U Withdrawn - After Issue CN206611612U (en) | 2017-03-06 | 2017-03-06 | A kind of proximity magnetic induction switch control chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206611612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879112A (en) * | 2017-03-06 | 2017-06-20 | 深圳市茂捷半导体有限公司 | A kind of proximity magnetic induction switch control chip and its control method |
| CN110266299A (en) * | 2019-06-18 | 2019-09-20 | 麦歌恩电子(上海)有限公司 | Magnetic switch chip |
-
2017
- 2017-03-06 CN CN201720218249.9U patent/CN206611612U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879112A (en) * | 2017-03-06 | 2017-06-20 | 深圳市茂捷半导体有限公司 | A kind of proximity magnetic induction switch control chip and its control method |
| CN110266299A (en) * | 2019-06-18 | 2019-09-20 | 麦歌恩电子(上海)有限公司 | Magnetic switch chip |
| CN110266299B (en) * | 2019-06-18 | 2023-05-16 | 麦歌恩电子(上海)有限公司 | Magnetic switch chip |
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