CN106129985B - A kind of hot plug discharge circuit - Google Patents
A kind of hot plug discharge circuit Download PDFInfo
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- CN106129985B CN106129985B CN201610503923.8A CN201610503923A CN106129985B CN 106129985 B CN106129985 B CN 106129985B CN 201610503923 A CN201610503923 A CN 201610503923A CN 106129985 B CN106129985 B CN 106129985B
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- hot plug
- discharge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Abstract
The embodiment of the invention discloses a kind of hot plug discharge circuits, it include: hot plug signal comparator circuit module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, wherein, when power supply works normally, hot plug signal comparator circuit module generates high level signal, and high level signal is for controlling the work of main control circuit module；High level signal is also used to the closing of control switch trigger circuit module, so that conductive discharge circuit module stops electric discharge；In power supply non-normal working, hot plug signal comparator circuit module generates low level signal, and low level signal is for controlling main control circuit module from service；Low level signal is also used to the conducting of control switch trigger circuit module, so that conductive discharge circuit module discharges.Hot plug discharge circuit provided in an embodiment of the present invention, the problem for being conducive to avoid the loss of existing hot plug discharge circuit big, and then using electricity wisely cost.
Description
Technical field
The present invention relates to electric circuit electronics technical fields, and in particular to a kind of hot plug discharge circuit.
Background technique
Hot plug plugs, i.e. system inserts or pull out its component, make it into the case where working on power
Working condition or the process for being detached from working condition.Hot plug technology has been widely used for the research and development of power supply and electronic product
Among process.When hot plug, since output voltage cannot be dropped to quickly within the scope of safe voltage, it is easy to interface be caused to damage
Or equipment fault, therefore hot plug discharge circuit is often needed to configure in hot-plug equipment, and in the prior art, hot plug electric discharge
Circuit is exactly capacitor parallel resistance, and no matter whether power supply works normally, i.e., whether hot plug, be equivalent to always have electricity on resistance
Loss, therefore such design loss is big.
Summary of the invention
The embodiment of the invention provides a kind of hot plug discharge circuits, to avoid the loss of existing hot plug discharge circuit
Big problem, and then using electricity wisely cost.
First aspect of the embodiment of the present invention provides a kind of hot plug discharge circuit, comprising: hot plug signal comparator circuit mould
Block, main control circuit module, switch triggering circuit module, conductive discharge circuit module；
Wherein, the main control circuit module is electrically connected with the hot plug signal comparator circuit module, the hot plug
Signal comparator circuit module is electrically connected with the switch triggering circuit module, and the switch triggering circuit module is put with the resistance
Electric circuit module electrical connection.
Wherein, when power supply works normally, the hot plug signal comparator circuit module generates high level signal, the height
Level signal is for controlling the main control circuit module work；The high level signal is also used to control the switch triggering electricity
Road module is closed, so that the conductive discharge circuit module stops electric discharge；
In power supply non-normal working, the hot plug signal comparator circuit module generates low level signal, the low electricity
Ordinary mail number is for controlling the main control circuit module from service；The low level signal is also used to control the switch touching
Power Generation Road module conducting, so that the conductive discharge circuit module discharges.
With reference to first aspect in some possible implementations, the hot plug discharge circuit further include: input terminal
Contact voltage Setting signal circuit module, wherein the input terminal contact voltage Setting signal circuit module and the switch
The electrical connection of trigger circuit module.
Wherein, when power supply works normally, input terminal contact voltage Setting signal circuit module generates high level signal；
The high level signal is closed for controlling the switch triggering circuit module, so that the conductive discharge circuit module stops
Only discharge；
In power supply non-normal working, input terminal contact voltage Setting signal circuit module generates low level signal, institute
Low level signal is stated for controlling the switch triggering circuit module conducting, so that the conductive discharge circuit module is put
Electricity.
With reference to first aspect in some possible implementations, the hot plug discharge circuit further include: discharge resistance
Protect circuit module, wherein the discharge resistance protection circuit module is electrically connected with the conductive discharge circuit module, described to put
Electric resistance protection circuit module carries out discharge prevention to the conductive discharge circuit module.
With reference to first aspect in some possible implementations, the hot plug signal comparator circuit module includes:
One diode, operational amplifier, first capacitor, the second capacitor, first resistor, second resistance, 3rd resistor, the 4th resistance,
One switch；
Wherein, the first port ground connection of the first switch, the second port of the first switch and the first capacitor
First port, the connection of the first port of the first port of the second resistance and second capacitor；Second capacitor
Second port be connected to ground；The second port of the second resistance accesses 5V power supply；The second port of the first resistor connects
Enter the 5V power supply；The of the second port of the first port of the first resistor and the first capacitor, the 3rd resistor
Two-port netwerk connection；The first port of the 3rd resistor is grounded；The first port of the first capacitor connects the operation amplifier
The reverse input end mouth of device, the homophase input port of the second port of the first capacitor and the operational amplifier, described the
The second port of four resistance connects；It is the second port of the output port of the operational amplifier and the first diode, described
The first port of 4th resistance connects；The first port of the first diode connects the main control circuit module；The fortune
The output port for calculating amplifier is also electrically connected with the switch triggering circuit module；
The hot plug signal comparator circuit module, when power supply works normally, for generating high level signal, with control
The main control circuit module work controls the switch triggering circuit module closing, so that the conductive discharge circuit
Module stops electric discharge；The hot plug signal comparator circuit module, in power supply non-normal working, for generating low level letter
Number, to control the main control circuit module from service, the control switch triggering circuit module conducting, so that described
The electric discharge of conductive discharge circuit module.
With reference to first aspect in some possible implementations, the switch triggering circuit module includes: the two or two pole
Pipe, third diode, the 5th resistance, the 7th resistance, eleventh resistor, twelfth resistor, thirteenth resistor, the first triode,
First field-effect tube；
Wherein, the first port connection hot plug signal comparator circuit module of second diode, described second
The second port of diode connects the first port of the twelfth resistor；The second port of the twelfth resistor and described the
The base stage of one triode, the connection of the first port of the thirteenth resistor；The collector of first triode and the described tenth
The first port of the first port of one resistance, the grid of first field-effect tube and the third diode connects；It is described
The first port of 7th resistance described in the second port of eleventh resistor connects, the second port of the 7th resistance and described the
The first port of five resistance connects, and the second port of the 5th resistance is electrically connected with discharge resistance protection circuit module；
The drain electrode of first field-effect tube is electrically connected with the conductive discharge circuit module；The source electrode of first field-effect tube, institute
State the second port of third diode, the emitter of first triode and the second port connection of the thirteenth resistor
Ground connection；First port, second port and the input terminal contact voltage Setting signal circuit module of the third diode
Electrical connection；
Wherein, the switch triggering circuit is produced when power supply is worked normally in the hot plug signal comparator circuit module
It is closed under the action of raw high level signal, so that the conductive discharge circuit module stops electric discharge；The switch triggering
Circuit, in power supply non-normal working, under the action of the low level signal that the hot plug signal comparator circuit module generates
Conducting, so that the conductive discharge circuit module discharges.
With reference to first aspect in some possible implementations, the conductive discharge circuit module include: the 9th resistance,
Tenth resistance；
Wherein, the first port and discharge resistance protection electricity that the 9th resistance and the tenth resistor coupled in parallel are formed
The second port that road connection, the 9th resistance and the tenth resistor coupled in parallel are formed switchs trigger circuit company of setting out with described
It connects；
Wherein, the conductive discharge circuit module, when power supply works normally, for stopping electric discharge；The conductive discharge
Circuit module, in power supply non-normal working, for discharging.
With reference to first aspect in some possible implementations, discharge resistance protection circuit include: second switch,
6th resistance and the 8th resistance；
It is wherein in parallel with the second switch after the 6th resistance, the 8th resistance series connection, the first of parallel connection formation
Port is connect with the switch triggering trigger circuit, the second port and the conductive discharge circuit connection that parallel connection is formed.
With reference to first aspect in some possible implementations, the input terminal contact voltage Setting signal circuit mould
Block includes: photoelectrical coupler, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, second
Triode, the second field-effect tube and control chip；
Wherein, the first port of the photoelectrical coupler is connect with input ac voltage signal, the photoelectrical coupler
Second port ground connection, the first end of the third port of the photoelectrical coupler and the 14th resistance, the 15th resistance
Mouth connection, the 4th port and the first port of the 16th resistance, the hair of second triode of the photoelectrical coupler
Emitter-base bandgap grading connection；The second port of 14th resistance connects 12V power supply；The second port of 15th resistance and described the
The second port of 16 resistance, the connection of the base stage of second triode；The collector of second triode and the control
The grid connection of the second port of chip, the second port of the 18th resistance, second field-effect tube；Described 18th
The first port of resistance is connect with the first port of the 17th resistance and 12V power supply, and the second of the 17th resistance
Port connects the first port of the control chip；Source electrode, drain electrode and the switch triggering circuit of second field-effect tube
Module electrical connection.
As can be seen that the hot plug discharge circuit in technical solution of the embodiment of the present invention, including hot plug signal are more electric
Road module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, when power supply works normally, heat is inserted
It pulls out signal comparator circuit module and generates high level signal, control the main control circuit module work, and control the switch touching
Power Generation Road module is closed, so that the conductive discharge circuit module stops electric discharge；In power supply non-normal working, hot plug
Signal comparator circuit module generates low level signal, controls the main control circuit module from service, and control the switch
The conducting of trigger circuit module can be kept away so that the conductive discharge circuit module discharges by implementing the embodiment of the present invention
Exempt from existing hot plug discharge circuit regardless of whether hot plug, is lost big ask caused by having electricity to be lost on resistance always
Topic, is conducive to using electricity wisely cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for hot plug discharge circuit that first embodiment of the invention provides；
Fig. 2 is a kind of structural schematic diagram for hot plug discharge circuit that second embodiment of the invention provides；
Fig. 3 is the wiring schematic diagram of the hot plug signal comparator circuit module in first and second embodiment of the invention；
Fig. 4 is the wiring schematic diagram of the switch triggering circuit module in first and second embodiment of the invention；
Fig. 5 is the wiring schematic diagram of the conductive discharge circuit module in first and second embodiment of the invention；
Fig. 6 is the wiring schematic diagram of the discharge resistance protection circuit module in second embodiment of the invention；
Fig. 7 is the wiring signal of the input terminal contact voltage Setting signal circuit module in second embodiment of the invention
Figure；
Fig. 8 is the wiring schematic diagram of the hot plug discharge circuit in second embodiment of the invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Term " includes " in description and claims of this specification and above-mentioned attached drawing and " having " and they appoint
What is deformed, it is intended that is covered and non-exclusive is included.Such as contain the process, method, system, production of a series of steps or units
Product or equipment are not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or
Optionally further comprising other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Referring to Fig. 1, Fig. 1 is a kind of structural schematic diagram for hot plug discharge circuit that first embodiment of the invention provides,
As shown in Figure 1, the hot plug discharge circuit in the embodiment of the present invention comprises the following modules: hot plug signal comparator circuit module
101, main control circuit module 102, switch triggering circuit module 103, conductive discharge circuit module 104；
Wherein, the main control circuit module 102 is electrically connected with the hot plug signal comparator circuit module 101, described
Hot plug signal comparator circuit module 101 is electrically connected with the switch triggering circuit module 103, the switch triggering circuit module
103 are electrically connected with the conductive discharge circuit module 104；
Wherein, when power supply works normally, the hot plug signal comparator circuit module 101 generates high level signal, institute
It states high level signal and works for controlling the main control circuit module 102；The high level signal is also used to control described open
It closes trigger circuit module 103 to close, so that the conductive discharge circuit module 104 stops electric discharge；
In power supply non-normal working, the hot plug signal comparator circuit module 101 generates low level signal, described low
Level signal stops working for controlling the main control circuit module 102；The low level signal is also used to control described open
It closes trigger circuit module 103 to be connected, so that the conductive discharge circuit module 104 discharges.
As can be seen that the hot plug discharge circuit in technical solution of the embodiment of the present invention, including hot plug signal are more electric
Road module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, when power supply works normally, heat is inserted
It pulls out signal comparator circuit module and generates high level signal, control the main control circuit module work, and control the switch touching
Power Generation Road module is closed, so that the conductive discharge circuit module stops electric discharge；In power supply non-normal working, hot plug
Signal comparator circuit module generates low level signal, controls the main control circuit module from service, and control the switch
The conducting of trigger circuit module can be kept away so that the conductive discharge circuit module discharges by implementing the embodiment of the present invention
Exempt from existing hot plug discharge circuit regardless of whether hot plug, is lost big ask caused by having electricity to be lost on resistance always
Topic, is conducive to using electricity wisely cost.
Referring to Fig. 2, Fig. 2 is a kind of structural schematic diagram for hot plug discharge circuit that second embodiment of the invention provides,
Hot plug discharge circuit described in Fig. 2 is to develop on the basis of hot plug discharge circuit shown in FIG. 1 to obtain.As shown in Fig. 2,
Hot plug discharge circuit in the embodiment of the present invention includes: hot plug signal comparator circuit module 101, main control circuit module
102, switch triggering circuit module 103, conductive discharge circuit module 104.
Optionally, the hot plug discharge circuit can further include: input terminal contact voltage Setting signal electricity
Road module 105, wherein the input terminal contact voltage Setting signal circuit module 105 and the switch triggering circuit module
103 electrical connections；
Wherein, when power supply works normally, input terminal contact voltage Setting signal circuit module 105 generates high level letter
Number；The high level signal is closed for controlling the switch triggering circuit module 103, so that the conductive discharge circuit
Module 104 stops electric discharge；In power supply non-normal working, input terminal contact voltage Setting signal circuit module 105 generates low
Level signal, the low level signal is connected for controlling the switch triggering circuit module 103, so that the resistance is put
Electric circuit module 104 discharges.
Optionally, the hot plug discharge circuit can further include: discharge resistance protects circuit module 106,
In, the discharge resistance protection circuit module 106 is electrically connected with the conductive discharge circuit module 104, and the discharge resistance is protected
Protection circuit module 106 carries out discharge prevention to the conductive discharge circuit module 104.
Wherein, a kind of wiring schematic diagram for hot plug discharge circuit that second embodiment of the invention provides please refers to Fig. 8 institute
Show.
As can be seen that the hot plug discharge circuit in technical solution of the embodiment of the present invention, including hot plug signal are more electric
Road module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, when power supply works normally, heat is inserted
It pulls out signal comparator circuit module and generates high level signal, control the main control circuit module work, and control the switch touching
Power Generation Road module is closed, so that the conductive discharge circuit module stops electric discharge；In power supply non-normal working, hot plug
Signal comparator circuit module generates low level signal, controls the main control circuit module from service, and control the switch
The conducting of trigger circuit module can be kept away so that the conductive discharge circuit module discharges by implementing the embodiment of the present invention
Exempt from existing hot plug discharge circuit regardless of whether hot plug, is lost big ask caused by having electricity to be lost on resistance always
Topic, is conducive to using electricity wisely cost.
Each circuit module is specifically introduced below.
Specifically, as shown in figure 3, Fig. 3 is the hot plug signal comparator circuit mould in first and second embodiment of the invention
The wiring schematic diagram of block, the hot plug signal comparator circuit module 101 include: first diode D1, operational amplifier ICIB,
First capacitor C1, the second capacitor C2, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first switch S1；
Wherein, the first port ground connection of the first switch S1, the second port of the first switch S1 and described first
The first port of the first port of capacitor C1, the first port of the second resistance R2 and the second capacitor C2 connects；Institute
The second port for stating the second capacitor C2 is connected to ground；The second port of the second resistance R2 accesses 5V power supply；First electricity
The second port for hindering R1 accesses the 5V power supply；The second end of the first port of the first resistor R1 and the first capacitor C1
The second port connection of mouth, the 3rd resistor R3；The first port of the 3rd resistor R3 is grounded；The first capacitor C1's
First port connects the reverse input end mouth 6 of the operational amplifier ICIB, the second port of the first capacitor C1 with it is described
The second port connection of the homophase input port 5 of operational amplifier ICIB, the 4th resistance R4；The operational amplifier ICIB
Output port 7 connect with the first port of the second port of the first diode D1, the 4th resistance R4；Described first
The first port of diode D1 connects the main control circuit module 102；The output port 7 of the operational amplifier ICIB also with
The switch triggering circuit module 103 connects；
The hot plug signal comparator circuit module 101, when power supply works normally, for generating high level signal, with
It controls the work of main control circuit module 102, control the closing of switch triggering circuit module 103, so that the electricity
It hinders discharge circuit module 104 and stops electric discharge；
The hot plug signal comparator circuit module 101, in power supply non-normal working, for generating low level signal,
It stopped working with controlling the main control circuit module 102, control the conducting of switch triggering circuit module 103, so that
The conductive discharge circuit module 104 discharges.
Specifically, as shown in figure 3, modular power source is inserted into power outlet when power supply works normally, signal HS and ground
SGND is shorted, and the 5 foot voltages of IC1B are higher than 6 feet at this time, so the output of 7 feet is high level, such A point voltage is also high level,
Main control circuit module 102 works normally.When and electromechanical source module from when being inserted in extraction, that is, power supply non-normal working shape
When state or hot plug, signal HS and ground SGND are disconnected, and HS becomes high level, so the 7 feet output of ICIB is high level, A at this time
Level point be it is low, so main control circuit module 102 stops working.
Specifically, as shown in figure 4, Fig. 4 is connecing for the switch triggering circuit module in first and second embodiment of the invention
Line schematic diagram, the switch triggering circuit module 103 include: the second diode D2, third diode ZD1, the 5th resistance R5,
Seven resistance R7, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the first triode Q2, the first field-effect tube
Q1；
Wherein, the first port of the second diode D2 connects the hot plug signal comparator circuit module, and described the
The second port of two diode D2 connects the first port of the twelfth resistor R12；The second end of the twelfth resistor R12
Mouth is connect with the base stage of the first triode Q2, the first port of the thirteenth resistor R13；The first triode Q2's
The first port of collector and the eleventh resistor R11, the grid of the first field-effect tube Q1 and the three or two pole
The first port of pipe ZD1 connects；The first port of 7th resistance R7 described in the second port of the eleventh resistor R11 connects,
The second port of the 7th resistance R7 is connect with the first port of the 5th resistance R5, the second end of the 5th resistance R5
Mouth is connect with discharge resistance protection circuit module 106；The drain electrode of the first field-effect tube Q1 and conductive discharge electricity
Road module 104 connects；The second port of the source electrode of the first field-effect tube Q1, the third diode ZD1, the described 1st
The second port of the emitter of pole pipe Q2 and the thirteenth resistor R13 connection ground connection；The first of the third diode ZD1
Port, second port are connect with the input terminal contact voltage Setting signal circuit module 105；
Wherein, when power supply works normally, the switch triggering circuit, in the hot plug signal comparator circuit module
It is closed under the action of 101 high level signals generated, so that the conductive discharge circuit module 104 stops electric discharge；In electricity
When the non-normal working of source, that is, hot plug when, the switch triggering circuit, the hot plug signal comparator circuit module 101 generate
Low level signal under the action of be connected so that the conductive discharge circuit module 104 discharge.
Specifically, hot plug signal comparator circuit module as shown in Figure 3 it is found that due to power supply work normally when, module
Power supply is inserted into power outlet, and first switch S1 and ground SGND are shorted, and the 5 foot voltages of IC1B are higher than 6 feet at this time, so 7 feet
Output is high level, therefore has electric current to flow through from the b-e of Q2 so Q2 is connected, and resistance R5, R7, R11 are Ω grades of M of resistance,
So output voltage VO is hardly discharged, the pole G of the first field-effect tube Q1 is dragged down, and Q1 is not turned on, so output voltage VO
It will not be discharged by conductive discharge circuit module；When and electromechanical source module from when being inserted in extraction, that is, the improper work of power supply
When making state, since output has very big electrolytic capacitor, so output voltage VO cannot quickly drop to safe voltage range.This
When, signal HS and ground SGND are disconnected, and HS becomes high level, so the 7 feet output of ICIB is high level, A level point is low at this time,
So main control circuit module 102 stops working, Q2 since b-e does not have electric current to pass through so do not turn on, first effect at this time
The pole G of Ying Guanguan Q1 is high level since VO provides voltage by resistance R5, R7, R11, so Q1 is connected.
Specifically, as shown in figure 5, Fig. 5 is connecing for the conductive discharge circuit module in first and second embodiment of the invention
Line schematic diagram, the conductive discharge circuit module 104 include: the 9th resistance R9, the tenth resistance R10；
Wherein, the first port of the 9th resistance R9 formation in parallel with the tenth resistance R10 and the discharge resistance
Protection circuit connection, the second port of the 9th resistance R9 formation in parallel with the tenth resistance R10 and the switch set out
Trigger circuit connection；
Wherein, the conductive discharge circuit module 104 stops electric discharge when power supply works normally；The conductive discharge electricity
Road module 104, in power supply non-normal working, for discharging.
Specifically, as shown in fig. 6, Fig. 6 is the wiring of the discharge resistance protection circuit module in second embodiment of the invention
Schematic diagram, the discharge resistance protection circuit includes: second switch S2, the 6th resistance R6 and the 8th resistance R8；
Wherein in parallel with the second switch S2 after the 6th resistance R6, the 8th resistance R8 series connection, parallel connection is formed
First port connect with the switch triggering trigger circuit, parallel connection formed second port and the conductive discharge circuit connect
It connects.
Specifically, as shown in Figures 5 and 6, when Q1 is connected, output voltage VO by second switch S2, discharge resistance R9,
R10 electric discharge, wherein second switch S2 is temperature switch, and the effect of S2 is to detect the temperature of discharge resistance R9, R10, when temperature mistake
Gao Shi, temperature switch disconnect automatically, and conductive discharge circuit module 104 stops electric discharge, and hot plug discharge circuit passes through the 6th resistance
R6, the 8th resistance R8, but since the 6th resistance R6, the resistance value of the 8th resistance R8 are very big, it discharges at this time very slow.When
After temperature reduces, second switch S2 restores to be closed automatically, 104 regular picture of conductive discharge circuit module, and then to conductive discharge
Circuit module 104 carries out discharge prevention.
Specifically, as shown in fig. 7, Fig. 7 is the input terminal contact voltage Setting signal electricity in second embodiment of the invention
The wiring schematic diagram of road module,
The input terminal contact voltage Setting signal circuit module 105 includes: photoelectrical coupler U1, the 14th resistance
R14, the 15th resistance R15, the 15th resistance R16, the 17th resistance R17, the 17th resistance R18, the second triode Q4, second
Field-effect tube Q3 and control chip P6；
Wherein, the first port of the photoelectrical coupler U1 is connect with input ac voltage signal, the photoelectrical coupler
The second port of U1 is grounded, the third port of the photoelectrical coupler U1 and the 14th resistance R14, the 15th resistance
The first port of R15 connects, the 4th port of the photoelectrical coupler U1 and first port, the institute of the 15th resistance R16
State the emitter connection of the second triode Q4；The second port of the 14th resistance R14 connects 12V power supply；Described 15th
The second port of resistance R15 is connect with the base stage of the second port of the 15th resistance R16, the second triode Q4；Institute
State the second triode Q4 collector and the control second port of chip P6, the second port of the 17th resistance R18,
The grid of the second field-effect tube Q3 connects；The first port of the 17th resistance R18 is with the 17th resistance R17's
First port and the connection of 12V power supply, the second port of the 17th resistance R17 connect the first end of the control chip P6
Mouthful；The source electrode of the second field-effect tube Q3, drain electrode are connect with the switch triggering circuit module 103.
Specifically, hot plug signal comparator circuit module 101 and input terminal contact input voltage Setting signal circuit mould
Block 105 is the function that a duplicate protection is played to corona discharge, and input terminal contacts input voltage Setting signal circuit module
105 working principle is: when power input terminal is when being not exposed to input voltage, system is in discharge condition.Specifically,
As shown in fig. 7, input voltage Setting signal G is Gao Ping when power supply works normally, Q3 conducting is dragged down the pole G of Q1, in this way
Q1 is not turned on, and will not be discharged；When not having input voltage namely in hot plug, input terminal contacts input voltage Setting signal
The input terminal of circuit module 105 is not contacted with input voltage, and input Setting signal G is low level, and Q3 is not turned on, and Q1 is led
Logical, system is in discharge condition.
As can be seen that the hot plug discharge circuit in technical solution of the embodiment of the present invention, including hot plug signal are more electric
Road module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, when power supply works normally, heat is inserted
It pulls out signal comparator circuit module and generates high level signal, control the main control circuit module work, and control the switch touching
Power Generation Road module is closed, so that the conductive discharge circuit module stops electric discharge；In power supply non-normal working, hot plug
Signal comparator circuit module generates low level signal, controls the main control circuit module from service, and control the switch
The conducting of trigger circuit module can be kept away so that the conductive discharge circuit module discharges by implementing the embodiment of the present invention
Exempt from existing hot plug discharge circuit regardless of whether hot plug, is lost big ask caused by having electricity to be lost on resistance always
Topic, is conducive to using electricity wisely cost.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
A kind of hot plug discharge circuit is provided for the embodiments of the invention above to be described in detail, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention；At the same time, for those skilled in the art is having according to the thought of the present invention
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention
Limitation.
Claims (6)
1. a kind of hot plug discharge circuit, which is characterized in that the hot plug discharge circuit includes: hot plug signal comparator circuit
Module, main control circuit module, switch triggering circuit module, conductive discharge circuit module；
Wherein, the main control circuit module is electrically connected with the hot plug signal comparator circuit module, the hot plug signal
Comparison circuit module is electrically connected with the switch triggering circuit module, the switch triggering circuit module and conductive discharge electricity
The electrical connection of road module；
Wherein, when power supply works normally, the hot plug signal comparator circuit module generates high level signal, the high level
Signal is for controlling the main control circuit module work；The high level signal is also used to control the switch triggering circuit mould
Block is closed, so that the conductive discharge circuit module stops electric discharge；
In power supply non-normal working, the hot plug signal comparator circuit module generates low level signal, the low level letter
Number for controlling the main control circuit module from service；The low level signal is also used to control the switch triggering electricity
Road module conducting, so that the conductive discharge circuit module discharges；
The hot plug discharge circuit further include: input terminal contact voltage Setting signal circuit module, wherein the input terminal
Sub- contact voltage Setting signal circuit module is electrically connected with the switch triggering circuit module；
Wherein, when power supply works normally, input terminal contact voltage Setting signal circuit module generates high level signal；It is described
High level signal is closed for controlling the switch triggering circuit module, so that conductive discharge circuit module stopping is put
Electricity；
In power supply non-normal working, input terminal contact voltage Setting signal circuit module generates low level signal, described low
Level signal is for controlling the switch triggering circuit module conducting, so that the conductive discharge circuit module discharges；
The hot plug discharge circuit further include: discharge resistance protects circuit module, wherein the discharge resistance protects circuit mould
Block is electrically connected with the conductive discharge circuit module, and the discharge resistance protection circuit module is to the conductive discharge circuit module
Carry out discharge prevention.
2. hot plug discharge circuit as described in claim 1, which is characterized in that the hot plug signal comparator circuit module packet
It includes: first diode, operational amplifier, first capacitor, the second capacitor, first resistor, second resistance, 3rd resistor, the 4th electricity
Resistance, first switch；
Wherein, the first port ground connection of the first switch, the of the second port of the first switch and the first capacitor
The first port of Single port, the first port of the second resistance and second capacitor connects；The of second capacitor
Two-port netwerk is connected to ground；The second port of the second resistance accesses 5V power supply；The second port of the first resistor accesses institute
State 5V power supply；Second port, the second end of the 3rd resistor of the first port of the first resistor and the first capacitor
Mouth connection；The first port of the 3rd resistor is grounded；The first port of the first capacitor connects the operational amplifier
The homophase input port of reverse input end mouth, the second port of the first capacitor and the operational amplifier, the 4th electricity
The second port of resistance connects；The second port of the output port of the operational amplifier and the first diode, the described 4th
The first port of resistance connects；The first port of the first diode connects the main control circuit module；The operation is put
The output port of big device is also electrically connected with the switch triggering circuit module；
The hot plug signal comparator circuit module, when power supply works normally, for generating high level signal, described in control
The work of main control circuit module controls the switch triggering circuit module closing, so that the conductive discharge circuit module
Stop electric discharge；The hot plug signal comparator circuit module, in power supply non-normal working, for generating low level signal, with
The main control circuit module from service, the control switch triggering circuit module conducting are controlled, so that the resistance
Discharge circuit module electric discharge.
3. hot plug discharge circuit as described in claim 1, which is characterized in that the switch triggering circuit module includes:
Two diodes, third diode, the 5th resistance, the 7th resistance, eleventh resistor, twelfth resistor, thirteenth resistor, the one or three
Pole pipe, the first field-effect tube；
Wherein, the first port of second diode connects the hot plug signal comparator circuit module, the two or two pole
The second port of pipe connects the first port of the twelfth resistor；The second port of the twelfth resistor and the described 1st
The base stage of pole pipe, the connection of the first port of the thirteenth resistor；The collector of first triode and the 11st electricity
The first port of the first port of resistance, the grid of first field-effect tube and the third diode connects；Described tenth
The first port of 7th resistance described in the second port of one resistance connects, the second port of the 7th resistance and the 5th electricity
The first port of resistance connects, and the second port of the 5th resistance is electrically connected with discharge resistance protection circuit module；It is described
The drain electrode of first field-effect tube is electrically connected with the conductive discharge circuit module；The source electrode of first field-effect tube, described
The second port of three diodes, the emitter of first triode and the second port of the thirteenth resistor connect
Ground；First port, second port and the input terminal contact voltage Setting signal circuit module electricity of the third diode
Connection；
Wherein, the switch triggering circuit is generated when power supply is worked normally in the hot plug signal comparator circuit module
It is closed under the action of high level signal, so that the conductive discharge circuit module stops electric discharge；The switch triggering circuit,
In power supply non-normal working, be connected under the action of the low level signal that the hot plug signal comparator circuit module generates,
So that the conductive discharge circuit module electric discharge.
4. hot plug discharge circuit as described in claim 1, which is characterized in that the conductive discharge circuit module includes:
Nine resistance, the tenth resistance；
Wherein, the first port and discharge resistance protection circuit that the 9th resistance and the tenth resistor coupled in parallel are formed connect
It connects, the 9th resistance is connect with the second port that the tenth resistor coupled in parallel is formed with the trigger circuit of setting out that switchs；
Wherein, the conductive discharge circuit module, when power supply works normally, for stopping electric discharge；The conductive discharge circuit
Module, in power supply non-normal working, for discharging.
5. hot plug discharge circuit as described in claim 1, which is characterized in that discharge resistance protection circuit includes: the
Two switches, the 6th resistance and the 8th resistance；
Wherein, first port that parallel connection formed in parallel with the second switch after the 6th resistance, the 8th resistance series connection
It is connect with the switch triggering trigger circuit, the second port and the conductive discharge circuit connection that parallel connection is formed.
6. hot plug discharge circuit as described in claim 1, which is characterized in that the input terminal contact voltage Setting signal
Circuit module includes: photoelectrical coupler, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th electricity
Resistance, the second triode, the second field-effect tube and control chip；
Wherein, the first port of the photoelectrical coupler is connect with input ac voltage signal, and the second of the photoelectrical coupler
The first port company of port ground connection, the third port of the photoelectrical coupler and the 14th resistance, the 15th resistance
It connects, the 4th port and the first port of the 16th resistance, the emitter of second triode of the photoelectrical coupler
Connection；The second port of 14th resistance connects 12V power supply；The second port and the described 16th of 15th resistance
The second port of resistance, the connection of the base stage of second triode；The collector of second triode and the control chip
Second port, the second port of the 18th resistance, second field-effect tube grid connection；18th resistance
First port connect with the first port of the 17th resistance and 12V power supply, the second port of the 17th resistance
Connect the first port of the control chip；Source electrode, drain electrode and the switch triggering circuit module of second field-effect tube
Electrical connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503923.8A CN106129985B (en) | 2016-06-30 | 2016-06-30 | A kind of hot plug discharge circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610503923.8A CN106129985B (en) | 2016-06-30 | 2016-06-30 | A kind of hot plug discharge circuit |
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| CN106129985A CN106129985A (en) | 2016-11-16 |
| CN106129985B true CN106129985B (en) | 2019-03-01 |
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| CN112486306B (en) * | 2020-10-28 | 2022-06-14 | 苏州浪潮智能科技有限公司 | Power switch protection circuit and protection method |
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| CN205945039U (en) * | 2016-06-30 | 2017-02-08 | 深圳茂硕电子科技有限公司 | Hot plug discharge circuit |
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| US7414335B2 (en) * | 2004-04-15 | 2008-08-19 | Seagate Technology | Inrush current controller |
| CN104079155B (en) * | 2013-03-28 | 2017-10-17 | 艾默生网络能源系统北美公司 | A kind of soft starting circuit and control method |
| CN203241994U (en) * | 2013-03-29 | 2013-10-16 | 昆达电脑科技(昆山)有限公司 | Hot-plug control device |
| CN203691703U (en) * | 2013-12-30 | 2014-07-02 | 欧普照明股份有限公司 | Device for controlling surge current of LED module |
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| CN205945039U (en) * | 2016-06-30 | 2017-02-08 | 深圳茂硕电子科技有限公司 | Hot plug discharge circuit |
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