CN205945039U - Hot plug discharge circuit - Google Patents
Hot plug discharge circuit Download PDFInfo
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- CN205945039U CN205945039U CN201620688960.6U CN201620688960U CN205945039U CN 205945039 U CN205945039 U CN 205945039U CN 201620688960 U CN201620688960 U CN 201620688960U CN 205945039 U CN205945039 U CN 205945039U
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- discharge
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Abstract
The embodiment of the utility model discloses hot plug discharge circuit, include: hot plug signal comparison circuit module, master control circuit module, switch trigger circuit module, conductive discharge circuit module, and wherein, at the power supply normal during operation, hot plug signal comparison circuit module produces high level signal, and high level signal is used for controlling the work of master control circuit module, high level signal still is used for the control switch trigger circuit module to close, and then makes conductive discharge circuit module stop to discharge, at the improper during operation of power, hot plug signal comparison circuit module produces low level signal, and low level signal is used for controlling master control circuit module stop work, low level signal still is used for the control switch trigger circuit module to switch on, and then makes conductive discharge circuit module discharge. The embodiment of the utility model provides a hot plug discharge circuit is favorable to avoiding current hot plug discharge circuit's problem that the loss is big and then using electricity wisely cost.
Description
Technical field
The utility model is related to electric circuit electronics technical field and in particular to a kind of hot plug discharge circuit.
Background technology
Hot plug, i.e. warm swap, that is, system in the case of working on power, insert or pull out its part so as to enter
Working condition or the process departing from working condition.Hot plug technology has been widely used for the research and development of power supply and electronic product
Among process.During hot plug, because output voltage can not quickly drop in the range of safe voltage it is easy to cause interface to damage
Or equipment fault, often needs to configure hot plug discharge circuit, in prior art, hot plug is discharged therefore in hot-plug equipment
Circuit is exactly electric capacity parallel resistance, no matter power supply whether normal work, and that is, whether hot plug, is equivalent to and has electricity always on resistance
Loss, therefore such design loss is big.
Utility model content
The utility model embodiment provides a kind of hot plug discharge circuit, to avoiding existing hot plug discharge circuit
Big problem is lost, and then using electricity wisely cost.
The utility model embodiment first aspect provides a kind of hot plug discharge circuit, including：Hot plug signal is more electric
Road module, main control circuit module, switch triggering circuit module, conductive discharge circuit module；
Wherein, described main control circuit module is electrically connected with described hot plug signal comparator circuit module, described hot plug
Signal comparator circuit module is electrically connected with described switch triggering circuit module, and described switch triggering circuit module and described resistance are put
Electric circuit module electrical connection.
Wherein, in power supply normal work, described hot plug signal comparator circuit module produces high level signal, described height
Level signal is used for controlling described main control circuit module work；Described high level signal is additionally operable to control described switch triggering electricity
Road module is closed, and then makes described conductive discharge circuit module stop electric discharge；
In power supply non-normal working, described hot plug signal comparator circuit module produces low level signal, described low electricity
Ordinary mail number is used for controlling described main control circuit module from service；Described low level signal, is additionally operable to control described switch to touch
Power Generation Road module turns on, and then makes described conductive discharge circuit module electric discharge.
In conjunction with first aspect in some possible implementations, described hot plug discharge circuit also includes：Input terminal
Contact voltage Setting signal circuit module, wherein, described input terminal contact voltage Setting signal circuit module and described switch
Triggers circuit module electrically connects.
Wherein, in power supply normal work, input terminal contact voltage Setting signal circuit module produces high level signal；
Described high level signal is used for controlling described switch triggering circuit module to close, and then described conductive discharge circuit module is stopped
Only discharge；
In power supply non-normal working, input terminal contact voltage Setting signal circuit module produces low level signal, institute
State low level signal to be used for controlling described switch triggering circuit module conducting, and then described conductive discharge circuit module is put
Electricity.
In conjunction with first aspect in some possible implementations, described hot plug discharge circuit also includes：Discharge resistance
Protection circuit module, wherein, described discharge resistance protection circuit module is electrically connected with described conductive discharge circuit module, described puts
Electric resistance protection circuit module carries out discharge prevention to described conductive discharge circuit module.
In conjunction with first aspect in some possible implementations, described hot plug signal comparator circuit module includes：The
One diode, operational amplifier, the first electric capacity, the second electric capacity, first resistor, second resistance, 3rd resistor, the 4th resistance,
One switch；
Wherein, first port ground connection, the second port of described first switch and described first electric capacity of described first switch
First port, the first port of described second resistance and described second electric capacity first port connect；Described second electric capacity
Second port be connected to ground；The second port of described second resistance accesses 5V power supply；The second port of described first resistor connects
Enter described 5V power supply；The second port of the first port of described first resistor and described first electric capacity, the of described 3rd resistor
Two-port netwerk connects；The first port ground connection of described 3rd resistor；The first port of described first electric capacity connects described operation amplifier
The reverse input end mouth of device, the second port of described first electric capacity and the homophase input port of described operational amplifier, described the
The second port of four resistance connects；The second port of the output port of described operational amplifier and described first diode, described
The first port of the 4th resistance connects；The first port of described first diode connects described main control circuit module；Described fortune
The output port calculating amplifier is also electrically connected with described switch triggering circuit module；
Described hot plug signal comparator circuit module, in power supply normal work, for producing high level signal, to control
Described main control circuit module work, the described switch triggering circuit module of control are closed, and then are made described conductive discharge circuit
Module stops electric discharge；Described hot plug signal comparator circuit module, in power supply non-normal working, for producing low level letter
Number, to control described main control circuit module from service, to control described switch triggering circuit module conducting, and then make described
Conductive discharge circuit module discharges.
In conjunction with first aspect in some possible implementations, described switch triggering circuit module includes：Two or two pole
Pipe, the 3rd diode, the 5th resistance, the 7th resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the first triode,
First FET；
Wherein, the first port described hot plug signal comparator circuit module of connection of described second diode, described second
The second port of diode connects the first port of described 12nd resistance；The second port of described 12nd resistance and described the
The base stage of one triode, the first port of described 13rd resistance connect；The colelctor electrode of described first triode and the described tenth
The first port of the first port of one resistance, the grid of described first FET and described 3rd diode connects；Described
The first port of the 7th resistance described in the second port of the 11st resistance connects, the second port of described 7th resistance and described the
The first port of five resistance connects, and the second port of described 5th resistance is electrically connected with described discharge resistance protection circuit module；
The drain electrode of described first FET is electrically connected with described conductive discharge circuit module；The source electrode of described first FET, institute
State the second port of the 3rd diode, the second port of the emitter stage of described first triode and described 13rd resistance connects
Ground connection；The first port of described 3rd diode, second port and described input terminal contact voltage Setting signal circuit module
Electrical connection；
Wherein, described switch triggering circuit, in power supply normal work, produces in described hot plug signal comparator circuit module
Close in the presence of raw high level signal, and then make described conductive discharge circuit module stop electric discharge；Described switch triggering
Circuit, in power supply non-normal working, in the presence of the low level signal that described hot plug signal comparator circuit module produces
Conducting, and then make described conductive discharge circuit module electric discharge.
In conjunction with first aspect in some possible implementations, described conductive discharge circuit module includes：9th resistance,
Tenth resistance；
Wherein, the first port that described 9th resistance and described tenth resistor coupled in parallel are formed and described discharge resistance protection electricity
Road connects, described 9th resistance is formed with described tenth resistor coupled in parallel second port and described switch set out triggers circuit even
Connect；
Wherein, described conductive discharge circuit module, in power supply normal work, for stopping electric discharge；Described conductive discharge
Circuit module, in power supply non-normal working, for discharging.
In conjunction with first aspect in some possible implementations, described discharge resistance protection circuit includes：Second switch,
6th resistance and the 8th resistance；
In parallel with described second switch after wherein said 6th resistance, described 8th resistant series, the first of formation in parallel
Port is connected with described switch triggering triggers circuit, and the second port being formed in parallel is connected with described conductive discharge circuit.
In conjunction with first aspect in some possible implementations, described 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 FET and control chip；
Wherein, the first port of described photoelectrical coupler is connected with input ac voltage signal, described photoelectrical coupler
Second port ground connection, the 3rd port of described photoelectrical coupler and described 14th resistance, the first end of described 15th resistance
Mouthful connect, the 4th port of described photoelectrical coupler and the first port of described 16th resistance, the sending out of described second triode
Emitter-base bandgap grading connects；The second port of described 14th resistance connects 12V power supply；The second port of described 15th resistance and described the
The second port of 16 resistance, the base stage of described second triode connect；The colelctor electrode of described second triode and described control
The second port of chip, the second port of described 18th resistance, the grid of described second FET connect；Described 18th
The first port of resistance is connected with the first port of described 17th resistance and 12V power supply, and the second of described 17th resistance
Port connects the first port of described control chip；The source electrode of described second FET, drain electrode and described switch triggering circuit
Module electrically connects.
As can be seen that the hot plug discharge circuit in the utility model embodiment technical scheme, including hot plug signal ratio
Relatively circuit module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, in power supply normal work,
Hot plug signal comparator circuit module produces high level signal, controls the work of described main control circuit module, and opens described in controlling
Close triggers circuit module to close, and then make described conductive discharge circuit module stop electric discharge；In power supply non-normal working, heat
Plug signal comparator circuit module produces low level signal, controls described main control circuit module from service, and controls described
Switch triggering circuit module turns on, and then makes described conductive discharge circuit module electric discharge, is implemented by implementing the utility model
Example is it can be avoided that regardless of whether hot plug in existing hot plug discharge circuit, have electricity that caused loss is lost on resistance always
Big problem, is conducive to using electricity wisely cost.
Brief description
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of hot plug discharge circuit that the utility model first embodiment provides；
Fig. 2 is a kind of structural representation of hot plug discharge circuit that the utility model second embodiment provides；
Fig. 3 is that the wiring of the hot plug signal comparator circuit module in first and second embodiment of the utility model is illustrated
Figure；
Fig. 4 is the wiring schematic diagram of the switch triggering circuit module in first and second embodiment of the utility model；
Fig. 5 is the wiring schematic diagram of the conductive discharge circuit module in first and second embodiment of the utility model；
Fig. 6 is the wiring schematic diagram of the discharge resistance protection circuit module in the utility model second embodiment；
Fig. 7 is that the wiring of the input terminal contact voltage Setting signal circuit module in the utility model second embodiment is shown
It is intended to；
Fig. 8 is the wiring schematic diagram of the hot plug discharge circuit in the utility model second embodiment.
Specific embodiment
In order that those skilled in the art more fully understand the utility model scheme, real below in conjunction with the utility model
Apply the accompanying drawing in example, the technical scheme in the utility model embodiment is clearly and completely described it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into this practicality
Novel protected scope.
Term " comprising " and " having " in specification and claims of the present utility model and above-mentioned accompanying drawing and it
Any deformation it is intended that cover non-exclusive comprising.For example contain the process of series of steps or unit, method, be
System, product or equipment are not limited to step or the unit listed, but alternatively also include step or the list do not listed
Unit, or alternatively also include for these processes, method, product or intrinsic other steps of equipment or unit.
Referenced herein " embodiment " is it is meant that the special characteristic, structure or the characteristic that describe can be wrapped in conjunction with the embodiments
It is contained at least one embodiment of the present utility model.This phrase and might not each mean in each position in the description
Identical embodiment, be not and the independent of other embodiments mutual exclusion or alternative embodiment.Those skilled in the art are explicit
Ground and be implicitly understood by, embodiment described herein can be combined with other embodiments.
Refer to Fig. 1, Fig. 1 is a kind of structural representation of hot plug discharge circuit that the utility model first embodiment provides
Figure, as shown in figure 1, the hot plug discharge circuit in the utility model embodiment is included with lower module：Hot plug signal is more electric
Road module 101, main control circuit module 102, switch triggering circuit module 103, conductive discharge circuit module 104；
Wherein, described main control circuit module 102 is electrically connected with described hot plug signal comparator circuit module 101, described
Hot plug signal comparator circuit module 101 is electrically connected with described switch triggering circuit module 103, described switch triggering circuit module
103 are electrically connected with described conductive discharge circuit module 104；
Wherein, in power supply normal work, described hot plug signal comparator circuit module 101 produces high level signal, institute
State high level signal to be used for controlling described main control circuit module 102 to work；Described high level signal is additionally operable to open described in control
Close triggers circuit module 103 to close, and then make described conductive discharge circuit module 104 stop electric discharge；
In power supply non-normal working, described hot plug signal comparator circuit module 101 produces low level signal, described low
Level signal is used for controlling described main control circuit module 102 to quit work；Described low level signal, is additionally operable to open described in control
Close triggers circuit module 103 to turn on, and then described conductive discharge circuit module 104 is discharged.
As can be seen that the hot plug discharge circuit in the utility model embodiment technical scheme, including hot plug signal ratio
Relatively circuit module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, in power supply normal work,
Hot plug signal comparator circuit module produces high level signal, controls the work of described main control circuit module, and opens described in controlling
Close triggers circuit module to close, and then make described conductive discharge circuit module stop electric discharge；In power supply non-normal working, heat
Plug signal comparator circuit module produces low level signal, controls described main control circuit module from service, and controls described
Switch triggering circuit module turns on, and then makes described conductive discharge circuit module electric discharge, is implemented by implementing the utility model
Example is it can be avoided that regardless of whether hot plug in existing hot plug discharge circuit, have electricity that caused loss is lost on resistance always
Big problem, is conducive to using electricity wisely cost.
Refer to Fig. 2, Fig. 2 is a kind of structural representation of hot plug discharge circuit that the utility model second embodiment provides
Figure, the hot plug discharge circuit described in Fig. 2 is to develop on the basis of the hot plug discharge circuit shown in Fig. 1 to obtain.As Fig. 2 institute
Show, the hot plug discharge circuit in the utility model embodiment includes：Hot plug signal comparator circuit module 101, main control electricity
Road module 102, switch triggering circuit module 103, conductive discharge circuit module 104.
Optionally, described hot plug discharge circuit can further include：Input terminal contact voltage Setting signal electricity
Road module 105, wherein, described input terminal contact voltage Setting signal circuit module 105 and described switch triggering circuit module
103 electrical connections；
Wherein, in power supply normal work, input terminal contact voltage Setting signal circuit module 105 produces high level letter
Number；Described high level signal is used for controlling described switch triggering circuit module 103 to close, and then makes described conductive discharge circuit
Module 104 stops electric discharge；In power supply non-normal working, input terminal contact voltage Setting signal circuit module 105 produces low
Level signal, described low level signal is used for controlling described switch triggering circuit module 103 to turn on, and then described resistance is put
Electric circuit module 104 discharges.
Optionally, described hot plug discharge circuit can further include：Discharge resistance protection circuit module 106, its
In, described discharge resistance protection circuit module 106 is electrically connected with described conductive discharge circuit module 104, and described discharge resistance is protected
Protection circuit module 106 carries out discharge prevention to described conductive discharge circuit module 104.
Wherein, a kind of wiring schematic diagram of hot plug discharge circuit that the utility model second embodiment provides refer to figure
Shown in 8.
As can be seen that the hot plug discharge circuit in the utility model embodiment technical scheme, including hot plug signal ratio
Relatively circuit module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, in power supply normal work,
Hot plug signal comparator circuit module produces high level signal, controls the work of described main control circuit module, and opens described in controlling
Close triggers circuit module to close, and then make described conductive discharge circuit module stop electric discharge；In power supply non-normal working, heat
Plug signal comparator circuit module produces low level signal, controls described main control circuit module from service, and controls described
Switch triggering circuit module turns on, and then makes described conductive discharge circuit module electric discharge, is implemented by implementing the utility model
Example is it can be avoided that regardless of whether hot plug in existing hot plug discharge circuit, have electricity that caused loss is lost on resistance always
Big problem, is conducive to using electricity wisely cost.
Below each circuit module is specifically introduced.
Specifically, as shown in figure 3, Fig. 3 to be hot plug signal in first and second embodiment of the utility model more electric
The wiring schematic diagram of road module, described hot plug signal comparator circuit module 101 includes：First diode D1, operational amplifier
ICIB, the first electric capacity C1, the second electric capacity C2, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first open
Close S1；
Wherein, the first port ground connection of described first switch S1, the second port of described first switch S1 and described first
The first port of the first port of electric capacity C1, the first port of described second resistance R2 and described second electric capacity C2 connects；Institute
The second port stating the second electric capacity C2 is connected to ground；The second port of described second resistance R2 accesses 5V power supply；Described first electricity
The second port of resistance R1 accesses described 5V power supply；The first port of described first resistor R1 and second end of described first electric capacity C1
Mouth, the second port of described 3rd resistor R3 connect；The first port ground connection of described 3rd resistor R3；Described first electric capacity C1's
First port connect described operational amplifier ICIB reverse input end mouth 6, the second port of described first electric capacity C1 with described
The homophase input port 5 of operational amplifier ICIB, the second port of described 4th resistance R4 connect；Described operational amplifier ICIB
Output port 7 be connected with the second port of described first diode D1, the first port of described 4th resistance R4；Described first
The first port of diode D1 connects described main control circuit module 102；The output port 7 of described operational amplifier ICIB also with
Described switch triggering circuit module 103 connects；
Described hot plug signal comparator circuit module 101, in power supply normal work, for producing high level signal, with
Control described main control circuit module 102 to work, control described switch triggering circuit module 103 to close, and then make described electricity
Resistance discharge circuit module 104 stops electric discharge；
Described hot plug signal comparator circuit module 101, in power supply non-normal working, for producing low level signal,
To control described main control circuit module 102 to quit work, control described switch triggering circuit module 103 to turn on, and then make
Described conductive discharge circuit module 104 discharges.
Specifically, as shown in figure 3, during power supply normal work, modular power source is inserted in supply socket, signal HS and ground
SGND short circuit, now the 5 pin voltages of IC1B are higher than 6 pin, so 7 pin are output as high level, such A point voltage is also high level,
Main control circuit module 102 normal work.When and dynamo-electric source module when being inserted in extraction, that is, power supply non-normal working shape
When state or hot plug, signal HS is disconnected with ground SGND, and HS is changed into high level, so 7 pin of ICIB are output as high level, now A
Level point is low, so main control circuit module 102 quits work.
Specifically, as shown in figure 4, Fig. 4 is the switch triggering circuit module in first and second embodiment of the utility model
Wiring schematic diagram, described switch triggering circuit module 103 includes：Second diode D2, the 3rd diode ZD1, the 5th resistance
R5, the 7th resistance R7, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the first triode Q2, first effect
Should pipe Q1；
Wherein, the first port of described second diode D2 connects described hot plug signal comparator circuit module, and described the
The second port of two diode D2 connects the first port of described 12nd resistance R12；Second end of described 12nd resistance R12
Mouth is connected with the base stage of described first triode Q2, the first port of described 13rd resistance R13；Described first triode Q2's
The first port of colelctor electrode and described 11st resistance R11, the grid of described first FET Q1 and described three or two pole
The first port of pipe ZD1 connects；The first port of the 7th resistance R7 described in second port of described 11st resistance R11 connects,
The second port of described 7th resistance R7 is connected with the first port of described 5th resistance R5, second end of described 5th resistance R5
Mouth is connected with described discharge resistance protection circuit module 106；The drain electrode of described first FET Q1 and described conductive discharge electricity
Road module 104 connects；The source electrode of described first FET Q1, the second port of described 3rd diode ZD1, the described 1st
The second port of the emitter stage of pole pipe Q2 and described 13rd resistance R13 connects ground connection；The first of described 3rd diode ZD1
Port, second port are connected with described input terminal contact voltage Setting signal circuit module 105；
Wherein, in power supply normal work, described switch triggering circuit, in described hot plug signal comparator circuit module
Close in the presence of the high level signal of 101 generations, and then make described conductive discharge circuit module 104 stop electric discharge；In electricity
When being hot plug during the non-normal working of source, described switch triggering circuit, produce in described hot plug signal comparator circuit module 101
Low level signal in the presence of turn on, and then described conductive discharge circuit module 104 is discharged.
Specifically, hot plug signal comparator circuit module as shown in Figure 3 understands, during due to power supply normal work, module
Power supply is inserted in supply socket, and first switch S1 is higher than 6 pin with ground SGND short circuit, the now 5 pin voltages of IC1B, so 7 pin
It is output as high level, therefore have electric current to flow through so Q2 conducting from the b-e of Q2, resistance R5, R7, R11 are the resistance of M Ω level,
So output voltage VO is hardly discharged, the G pole of the first FET Q1 drags down, and Q1 is not turned on, so output voltage VO
Also will not be discharged by conductive discharge circuit module；When and dynamo-electric source module when being inserted in extraction, that is, the improper work of power supply
When making state, because output has very big electrochemical capacitor, so output voltage VO can not quickly drop to safe voltage scope.This
When, signal HS is disconnected with ground SGND, and HS is changed into high level, so 7 pin of ICIB are output as high level, now A level point is low,
So main control circuit module 102 quits work, Q2, because b-e does not have electric current to pass through so not turning on, is now imitated for first
Should pipe pipe Q1 G pole due to VO through resistance R5, R7, R11 provide voltage be high level, so Q1 conducting.
Specifically, as shown in figure 5, Fig. 5 is the conductive discharge circuit module in first and second embodiment of the utility model
Wiring schematic diagram, described conductive discharge circuit module 104 includes：9th resistance R9, the tenth resistance R10；
Wherein, the first port of described 9th resistance R9 formation in parallel with described tenth resistance R10 and described discharge resistance
Protection circuit connects, the second port of described 9th resistance R9 formation in parallel with described tenth resistance R10 is set out with described switch
Triggers circuit connects；
Wherein, described conductive discharge circuit module 104, in power supply normal work, stops electric discharge；Described conductive discharge electricity
Road module 104, in power supply non-normal working, for discharging.
Specifically, as shown in fig. 6, Fig. 6 is the discharge resistance protection circuit module in the utility model second embodiment
Wiring schematic diagram, described discharge resistance protection circuit includes：Second switch S2, the 6th resistance R6 and the 8th resistance R8；
, in parallel formation in parallel with described second switch S2 after wherein said 6th resistance R6, described 8th resistance R8 series connection
First port be connected with described switch triggering triggers circuit, the in parallel second port being formed is with described conductive discharge circuit even
Connect.
Specifically, as shown in Figures 5 and 6, Q1 conducting when, output voltage VO pass through second switch S2, discharge resistance R9,
R10 discharges, and wherein, second switch S2 is temperature switch, and the effect of S2 is the temperature of detection discharge resistance R9, R10, when temperature mistake
Gao Shi, temperature switch disconnects automatically, and conductive discharge circuit module 104 stops electric discharge, and hot plug discharge circuit passes through the 6th resistance
R6, described 8th resistance R8, but because the resistance value of the 6th resistance R6, the 8th resistance R8 is very big, therefore now discharge very slow.When
After temperature reduces, second switch S2 recovers to close automatically, conductive discharge circuit module 104 regular picture, and then to conductive discharge
Circuit module 104 carries out discharge prevention.
Specifically, as shown in fig. 7, Fig. 7 is the given letter of input terminal contact voltage in the utility model second embodiment
The wiring schematic diagram of number circuit module,
Described 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
FET Q3 and control chip P6；
Wherein, the first port of described photoelectrical coupler U1 is connected with input ac voltage signal, described photoelectrical coupler
Second port ground connection, the 3rd port of described photoelectrical coupler U1 and described 14th resistance R14, described 15th resistance of U1
First port connection, the 4th port of described photoelectrical coupler U1 and the first port of described 15th resistance R16, the institute of R15
The emitter stage stating the second triode Q4 connects；The second port of described 14th resistance R14 connects 12V power supply；Described 15th
The second port of resistance R15 is connected with the second port of described 15th resistance R16, the base stage of described second triode Q4；Institute
State the colelctor electrode of the second triode Q4 and the second port of described control chip P6, the second port of described 17th resistance R18,
The grid of described second FET Q3 connects；The first port of described 17th resistance R18 is with described 17th resistance R17's
First port and 12V power supply connect, and the second port of described 17th resistance R17 connects the first end of described control chip P6
Mouthful；The source electrode of described second FET Q3, drain electrode are connected with described switch triggering circuit module 103.
Specifically, hot plug signal comparator circuit module 101 contacts input voltage Setting signal circuit mould with input terminal
Block 105 is the function of playing a duplicate protection to corona discharge, and input terminal contacts input voltage Setting signal circuit module
105 operation 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, in power supply normal work, input voltage Setting signal G is Gao Ping, Q3 turns on, the G pole of Q1 is dragged down, so
Q1 is not turned on, and will not discharge；When not having input voltage namely in hot plug, input terminal contacts input voltage Setting signal
The input terminal of circuit module 105 and input voltage are not in contact with, and input Setting signal G is low level, and Q3 is not turned on, and Q1 leads
Logical, system is in discharge condition.
As can be seen that the hot plug discharge circuit in the utility model embodiment technical scheme, including hot plug signal ratio
Relatively circuit module, main control circuit module, switch triggering circuit module, conductive discharge circuit module, in power supply normal work,
Hot plug signal comparator circuit module produces high level signal, controls the work of described main control circuit module, and opens described in controlling
Close triggers circuit module to close, and then make described conductive discharge circuit module stop electric discharge；In power supply non-normal working, heat
Plug signal comparator circuit module produces low level signal, controls described main control circuit module from service, and controls described
Switch triggering circuit module turns on, and then makes described conductive discharge circuit module electric discharge, is implemented by implementing the utility model
Example is it can be avoided that regardless of whether hot plug in existing hot plug discharge circuit, have electricity that caused loss is lost on resistance always
Big problem, is conducive to using electricity wisely cost.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion described in detail in certain embodiment
Point, may refer to the associated description of other embodiment.
A kind of hot plug discharge circuit above the utility model embodiment being provided is described in detail, herein
Apply specific case principle of the present utility model and embodiment are set forth, the explanation of above example is only intended to
Help understand method of the present utility model and its core concept；Simultaneously for one of ordinary skill in the art, according to this practicality
New thought, all will change in specific embodiments and applications, and in sum, this specification content should not
It is interpreted as to restriction of the present utility model.
Claims (8)
1. a kind of hot plug discharge circuit is it is characterised in that described hot plug discharge circuit includes：Hot plug signal comparator circuit
Module, main control circuit module, switch triggering circuit module, conductive discharge circuit module；
Wherein, described main control circuit module is electrically connected with described hot plug signal comparator circuit module, described hot plug signal
Comparison circuit module is electrically connected with described switch triggering circuit module, and described switch triggering circuit module is electric with described conductive discharge
Road module electrical connection；
Wherein, in power supply normal work, described hot plug signal comparator circuit module produces high level signal, described high level
Signal is used for controlling described main control circuit module work；Described high level signal is additionally operable to control described switch triggering circuit mould
Block is closed, and then makes described conductive discharge circuit module stop electric discharge；
In power supply non-normal working, described hot plug signal comparator circuit module produces low level signal, described low level letter
Number it is used for controlling described main control circuit module from service；Described low level signal, is additionally operable to control described switch triggering electricity
Road module conducting, and then make described conductive discharge circuit module electric discharge.
2. hot plug discharge circuit as claimed in claim 1 is it is characterised in that described hot plug discharge circuit also includes：Defeated
Enter termination contact voltage Setting signal circuit module, wherein, described input terminal contact voltage Setting signal circuit module and institute
State the electrical connection of switch triggering circuit module；
Wherein, in power supply normal work, input terminal contact voltage Setting signal circuit module produces high level signal；Described
High level signal is used for controlling described switch triggering circuit module to close, and then makes described conductive discharge circuit module stop putting
Electricity；
In power supply non-normal working, input terminal contact voltage Setting signal circuit module produces low level signal, described low
Level signal is used for controlling described switch triggering circuit module conducting, and then makes described conductive discharge circuit module electric discharge.
3. hot plug discharge circuit as claimed in claim 2 is it is characterised in that described hot plug discharge circuit also includes：Put
Electric resistance protection circuit module, wherein, described discharge resistance protection circuit module is electrically connected with described conductive discharge circuit module,
Described discharge resistance protection circuit module carries out discharge prevention to described conductive discharge circuit module.
4. hot plug discharge circuit as claimed in claim 3 is it is characterised in that described hot plug signal comparator circuit module bag
Include：First diode, operational amplifier, the first electric capacity, the second electric capacity, first resistor, second resistance, 3rd resistor, the 4th electricity
Resistance, first switch；
Wherein, the first port ground connection of described first switch, the of the second port of described first switch and described first electric capacity
The first port of Single port, the first port of described second resistance and described second electric capacity connects；The of described second electric capacity
Two-port netwerk is connected to ground；The second port of described second resistance accesses 5V power supply；The second port of described first resistor accesses institute
State 5V power supply；The second port of the first port of described first resistor and described first electric capacity, the second end of described 3rd resistor
Mouth connects；The first port ground connection of described 3rd resistor；The first port of described first electric capacity connects described operational amplifier
Reverse input end mouth, the second port of described first electric capacity and the homophase input port of described operational amplifier, described 4th electricity
The second port of resistance connects；The second port of the output port of described operational amplifier and described first diode, the described 4th
The first port of resistance connects；The first port of described first diode connects described main control circuit module；Described computing is put
The output port of big device is also electrically connected with described switch triggering circuit module；
Described hot plug signal comparator circuit module, in power supply normal work, for producing high level signal, described to control
The work of main control circuit module, the described switch triggering circuit module of control are closed, and then are made described conductive discharge circuit module
Stop electric discharge；Described hot plug signal comparator circuit module, in power supply non-normal working, for producing low level signal, with
Control described main control circuit module from service, control described switch triggering circuit module conducting, and then make described resistance
Discharge circuit module is discharged.
5. hot plug discharge circuit as claimed in claim 3 is it is characterised in that described switch triggering circuit module includes：The
Two diodes, the 3rd diode, the 5th resistance, the 7th resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the one or three
Pole pipe, the first FET；
Wherein, the first port of described second diode connects described hot plug signal comparator circuit module, described two or two pole
The second port of pipe connects the first port of described 12nd resistance；The second port and the described 1st of described 12nd resistance
The base stage of pole pipe, the first port of described 13rd resistance connect；The colelctor electrode of described first triode and described 11st electricity
The first port of the first port, the grid of described first FET and described 3rd diode of resistance connects；Described tenth
The first port of the 7th resistance described in the second port of one resistance connects, and the second port of described 7th resistance is electric with the described 5th
The first port of resistance connects, and the second port of described 5th resistance is electrically connected with described discharge resistance protection circuit module；Described
The drain electrode of the first FET is electrically connected with described conductive discharge circuit module；The source electrode of described first FET, described
The second port of three diodes, the second port of the emitter stage of described first triode and described 13rd resistance connects
Ground；The first port of described 3rd diode, second port and described input terminal contact voltage Setting signal circuit module electricity
Connect；
Wherein, described switch triggering circuit, in power supply normal work, produces in described hot plug signal comparator circuit module
Close in the presence of high level signal, and then make described conductive discharge circuit module stop electric discharge；Described switch triggering circuit,
In power supply non-normal working, turn in the presence of the low level signal that described hot plug signal comparator circuit module produces,
And then make described conductive discharge circuit module electric discharge.
6. hot plug discharge circuit as claimed in claim 3 is it is characterised in that described conductive discharge circuit module includes：The
Nine resistance, the tenth resistance；
Wherein, the first port that described 9th resistance is formed with described tenth resistor coupled in parallel is with described discharge resistance protection circuit even
Connect, the second port being formed and described switch triggers circuit of setting out are connected described 9th resistance with described tenth resistor coupled in parallel；
Wherein, described conductive discharge circuit module, in power supply normal work, for stopping electric discharge；Described conductive discharge circuit
Module, in power supply non-normal working, for discharging.
7. hot plug discharge circuit as claimed in claim 3 is it is characterised in that described discharge resistance protection circuit includes：The
Two switches, the 6th resistance and the 8th resistance；
In parallel with described second switch after wherein said 6th resistance, described 8th resistant series, the first port being formed in parallel
It is connected with described switch triggering triggers circuit, the second port being formed in parallel is connected with described conductive discharge circuit.
8. hot plug discharge circuit as claimed in claim 3 is it is characterised in that described 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 FET and control chip；
Wherein, the first port of described photoelectrical coupler is connected with input ac voltage signal, and the second of described photoelectrical coupler
Port is grounded, and the 3rd port of described photoelectrical coupler is connected with the first port of described 14th resistance, described 15th resistance
Connect, the 4th port of described photoelectrical coupler and the first port of described 16th resistance, the emitter stage of described second triode
Connect；The second port of described 14th resistance connects 12V power supply；The second port and the described 16th of described 15th resistance
The second port of resistance, the base stage of described second triode connect；The colelctor electrode of described second triode and described control chip
Second port, the second port of described 18th resistance, described second FET grid connect；Described 18th resistance
First port be connected with the first port of described 17th resistance and 12V power supply, the second port of described 17th resistance
Connect the first port of described control chip；The source electrode of described second FET, drain electrode and described switch triggering circuit module
Electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620688960.6U CN205945039U (en) | 2016-06-30 | 2016-06-30 | Hot plug discharge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620688960.6U CN205945039U (en) | 2016-06-30 | 2016-06-30 | Hot plug discharge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945039U true CN205945039U (en) | 2017-02-08 |
Family
ID=57930511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620688960.6U Withdrawn - After Issue CN205945039U (en) | 2016-06-30 | 2016-06-30 | Hot plug discharge circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205945039U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129985A (en) * | 2016-06-30 | 2016-11-16 | 深圳茂硕电子科技有限公司 | A kind of hot plug discharge circuit |
| CN107562175A (en) * | 2017-09-06 | 2018-01-09 | 郑州云海信息技术有限公司 | It is a kind of to reduce the method and device that MOSFET is lost in warm connection function module |
| CN112332644B (en) * | 2020-09-02 | 2021-11-02 | 京微齐力(北京)科技有限公司 | Hot plug protection circuit |
| CN114079420A (en) * | 2020-08-13 | 2022-02-22 | 致新科技股份有限公司 | Overvoltage protection circuit |
-
2016
- 2016-06-30 CN CN201620688960.6U patent/CN205945039U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129985A (en) * | 2016-06-30 | 2016-11-16 | 深圳茂硕电子科技有限公司 | A kind of hot plug discharge circuit |
| CN106129985B (en) * | 2016-06-30 | 2019-03-01 | 深圳茂硕电子科技有限公司 | A kind of hot plug discharge circuit |
| CN107562175A (en) * | 2017-09-06 | 2018-01-09 | 郑州云海信息技术有限公司 | It is a kind of to reduce the method and device that MOSFET is lost in warm connection function module |
| CN114079420A (en) * | 2020-08-13 | 2022-02-22 | 致新科技股份有限公司 | Overvoltage protection circuit |
| CN112332644B (en) * | 2020-09-02 | 2021-11-02 | 京微齐力(北京)科技有限公司 | Hot plug protection circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20190301 |