CN106160708A - Hardware control circuit and electronic installation thereof - Google Patents
Hardware control circuit and electronic installation thereof Download PDFInfo
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- CN106160708A CN106160708A CN201510154989.6A CN201510154989A CN106160708A CN 106160708 A CN106160708 A CN 106160708A CN 201510154989 A CN201510154989 A CN 201510154989A CN 106160708 A CN106160708 A CN 106160708A
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- control circuit
- capacitor
- circuit
- threshold value
- hardware control
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Abstract
The application is about hardware control circuit and electronic installation thereof.An embodiment according to the application, a hardware control circuit comprises: ON/OFF threshold value control circuit, secondary power supply, charge/discharge circuit, and control signal drive circuit.This ON/OFF threshold value control circuit is configured to control the unlatching threshold value of input voltage and close threshold value.This secondary power supply is connected to described ON/OFF threshold value control circuit.This charge/discharge circuit is configured to be powered by described secondary circuit, and is configured to slowly to charge and repid discharge controls at least one output and controls assembly producing control signal, and this at least one output controls assembly for controlling an output of an electronic circuit.This control signal drive circuit, is configured to that control signal is fed to this at least one output and controls assembly.
Description
Technical field
The application generally relates to electronic circuit and device, more particularly about hardware control circuit and comprise this hardware
The electronic installation of control circuit.
Background technology
For power supply unit (PSU), if on-off circuit cannot immediately turn off Metal-Oxide Semiconductor field-effect transistor
(MOSFET), then MOSFET must bear inrush current.That is, when being continuously switched on/turn off PSU, MOSFET
It is not protected.Meanwhile, the capacitor of PSU is not owing to having voltage protection and limited.Insecure PSU can greatly damage
The electronic circuit of its supply electric power bad.
Although having been devised by special IC (IC) to solve above technical problem, it can be connected lentamente and close rapidly
The MOSFET of disconnected PSU；But, this type of IC is prohibitively expensive.Additionally, increasing electronic installation tends to low profit
Profit, thus Producer must strictly control cost.
Export and/or need MOSFET to support hot plug and/or counnter attack for wherein needing on-off circuit to control one
Other electronic circuit connect, it is perplexed by same problem.
Therefore, the industrial control circuit slowly connected and rapidly switch off needing low cost badly.
Summary of the invention
One of purpose of the application is to provide a hardware control circuit, its can perform slowly to connect and rapidly switch off control and
It is not required to expensive component.
An embodiment according to the application, a hardware control circuit comprises: ON/OFF threshold value control circuit, secondary power supply, fill
/ discharge circuit, and control signal drive circuit.This ON/OFF threshold value control circuit is configured to control opening of input voltage
Open threshold value and close threshold value.This secondary power supply is connected to described ON/OFF threshold value control circuit.This charge/discharge circuit is configured
To be powered by described secondary circuit, and it is configured to open transistor charging capacitor with First Speed and pass through with the
Two speed are closed this transistor and are controlled at least one output control assembly to this capacitor that discharges to produce control signal, and this is extremely
Few output controls an assembly output for control one electronic circuit, and this second speed is higher than this First Speed.This control
Signal drive circuit, is configured to that control signal is fed to this at least one output and controls assembly.
An embodiment according to the application, it is at least one Metal-Oxide Semiconductor field effect that this at least one output controls assembly
Transistor.Wherein under the control of charge/discharge circuit, this at least one output control assembly is configured to input voltage and is more than
Connect with third speed when opening threshold value, and when input voltage is less than described closedown threshold value with higher than the 4th of third speed
Speed turns off.ON/OFF threshold value control circuit comprises the first resistor, the first Zener diode and the second Zener diode；Its
In the first side of the first resistor be connected to input voltage, the second side of the first resistor is connected to the first Zener diode
Negative electrode, the negative electrode of the second Zener diode is connected to the anode of the first Zener diode, and the anode of the second Zener diode
It is connected to the base stage of the NPN audion of charge/discharge circuit.Secondary power supply comprises the first Zener diode, the first capacitor
And first capacitor；Wherein the first capacitor is connected between anode and the ground connection of the first Zener diode.Charge/discharge circuit
Comprise the 3rd resistor, the 5th resistor and the second capacitor further；This transistor is nmos pass transistor, this electricity
Container is the 3rd capacitor；Wherein the emitter stage of NPN audion is connected to ground connection, and the collector of NPN audion is connected to
The grid of nmos pass transistor, the 3rd resistor and the second capacitor, the drain electrode of nmos pass transistor is connected to the 3rd electric capacity
Device, the source electrode of nmos pass transistor is connected to ground connection, and the 5th capacitor connects the 3rd resistor and the 3rd capacitor to arrange
The charge constant of the 3rd capacitor.Control signal drive circuit comprises nmos pass transistor and the 3rd capacitor.First
The resistance of resistor is selected to obtain control signal and limit the power consumption of hardware control circuit.Another according to the application is real
Executing example, control signal drive circuit can comprise the 4th capacitor for controlling nmos pass transistor.Hardware control circuit can
Comprising optical coupler further, wherein optical coupler comprises the diode being positioned at primary side and three poles being positioned at primary side
Pipe.This diode obtains the voltage signal of input voltage and by optocoupler transmission current signal information to three by current information
Pole is managed, in order to from the primary side of optical coupler, input voltage is transmitted the primary side to optical coupler.
The additional embodiment of the application additionally provides the power supply unit and electronic installation comprising hardware control circuit.
Compared to prior art, the hardware control circuit that the application provides can with general components the application-specific integrated circuit of inexpensive real
The control the most slowly connected and rapidly switch off.And in addition to low cost, this hardware control circuit also has reliable and stable and high
The advantage of effect.
Accompanying drawing explanation
Fig. 1 demonstrates the block diagram of PSU, and this PSU comprises the hardware control circuit according to the application one embodiment
Fig. 2 shows the schematic diagram of PSU, and it comprises the hardware control circuit of an embodiment according to the application, the most firmly
Part control circuit can be summarized as block diagram as shown in Figure 1
Fig. 3 shows the schematic diagram of PSU, and it comprises the hardware control circuit of another embodiment according to the application, Qi Zhongguang
Learn bonder and add the hardware control circuit shown in Fig. 2 to
Detailed description of the invention
Spirit for a better understanding of the present invention, it is made furtherly by the part preferred embodiment below in conjunction with the present invention
Bright.
Fig. 1 demonstrates the block diagram of PSU 10, and this PSU 10 comprises the hardware control circuit according to the application one embodiment
12.Those skilled in the art are it will be appreciated that " hardware " means mainly to utilize custom hardware technological means rather than application-specific integrated circuit reality
Existing control circuit.Meanwhile, this type of hardware control circuit 12 can be used for having same or like other electronics controlling and requiring
In circuit or equipment.
As it is shown in figure 1, hardware control circuit 12 comprises ON/OFF threshold value control circuit 120, secondary power supply 122, discharge charge
Electricity circuit 124, and control signal drive circuit 126.ON/OFF threshold value control circuit 120 is configured to control input electricity
Pressure Vin+Unlatching threshold value and close threshold value.Secondary power supply 122 is powered for charge/discharge circuit 124.Charge/discharge circuit 124
It is configured to First Speed charge lentamente and control letter to discharge rapidly higher than the second speed of First Speed to produce
Number control at least one output and control assembly, such as MOSFET 14.To those skilled in the art, " slowly " with
" quickly " and other similar word should be that this area institute routine is thought.This output controls assembly and is used for controlling electronic circuit
Or an output of equipment.This control signal will be fed to MOSFET 14 via control signal drive circuit 126.
In this embodiment, at least one MOSFET 14 is configured to a pair pour in protection/anti-reverse MOSFET, thus controls
One output of PSU 10.The output of PSU 10 is configured to be supplied to back-end circuit via capacitor 18, i.e. DC/DC
Circuit 16.Under the control of charge/discharge circuit 124, MOSFET 14 is at the input voltage V of PSU 10in+More than opening
To connect lentamente with third speed when opening threshold value, and at input voltage Vin+Will be with higher than the 3rd speed less than during closedown threshold value
The fourth speed of degree rapidly switches off.The RC constant of charge/discharge circuit 124 determines the ETAD expected time of arrival and departure of MOSFET 14.Thus,
When PSU 10 is disconnected, inrush current is limited, and therefore MOSFET 14 is protected.Correspondingly, MOSFET
14 can operate in any condition in safety zone.PSU 10 is the most reliably and efficiently controlled.
Fig. 2 shows the schematic diagram of PSU 10, and it comprises the hardware control circuit 12 of an embodiment according to the application,
Wherein hardware control circuit 12 can be summarized as block diagram as shown in Figure 1.Those skilled in the art it will be appreciated that, identical electronic
Assembly can be shared by different circuit modules.
As in figure 2 it is shown, ON/OFF threshold value control circuit 120 generally comprise the first Zener (ZENER) diode D1, second
Zener diode D2 and the first resistor R1.Secondary power supply 122 generally includes D1, R1 and the first capacitor C1.
Charge/discharge circuit 124 generally includes the 3rd resistor R3, the 4th resistor R4, the 5th resistor R5, NPN tri-pole
Pipe Q1, nmos pass transistor Q2, the second capacitor C2 and the 3rd capacitor C3.Control signal drive circuit 126
Generally comprise Q2, R4 and C3.
Specifically, first side of R1 is connected to input voltage Vin+, and second side of R1 is connected to the negative electrode of D1.
D1 and D2 may be used to set unlatching threshold value and the under-voltage protection threshold value of MOSFET 14.Can be by changing D1's and D2
Value updates these threshold values.The negative electrode of D2 is connected to the anode of D1, and the anode of D2 is connected to NPN audion Q1
Base stage, therefore, can by D1 and D2 control open NPN audion Q1 threshold value.
C1 is the capacitor filter of the power supply for hardware control circuit 12, and the voltage of therefore C1 is hardware controls
The supply voltage of circuit 12, it can be clamped by D2 when Q1 opens.The charge constant of C2 is determined by R3,
And the discharge time constant of C1 is determined by NPN audion Q1.As a result, NMOS Q2 can open lentamente but immediately
Disconnect.
The emitter stage of NPN audion Q1 is connected to ground connection or the source electrode of MOSFET 14.The collection of NPN audion Q1
Pole is connected to grid and the C2 of NMOS Q2, and therefore NPN audion Q1 can draw the electric current of C2 and control NMOS
The ON/OFF of Q2.The drain electrode of NMOS Q2 is connected to C3, and therefore NMOS Q2 can draw electric current so that C3 repid discharge.
The source electrode of NMOS Q2 is connected to ground connection or the source electrode of MOSFET 14.
R1 is set the Power Limitation for hardware control circuit 12.Although the resistance increasing R1 can reduce hardware controls
The loss of circuit 12, if but the too high in resistance of R1, the voltage of C1 and the electric current of control signal may reductions.Therefore,
Select the proper resistor of R1 not only to realize required control signal but also power limitation consumption.R2 is connected to NPN tri-pole
The base stage of pipe Q1 is for setting the bias current of NPN audion Q1.R3 be connected to NPN audion Q1 collector,
The grid of NMOS Q2 and the second capacitor C2.When NMOS Q2 draws the electric current of C3, R4 will limit NMOS
The electric current of Q2.When Q2 draw electric current in admissible scope time, removable R4.R5 be connected to R3, R4 and
C3, and the charge constant of C3 can be set.Additionally, when the opening time of MOSFET 14 needs to change, can
Update R5.
As input voltage Vin+When increasing to breakdown voltage (the ZENER voltage) less than Zener diode D1, not to C1
Charging, and power to charge/discharge circuit 124.Correspondingly, NPN audion Q1 and NMOS Q2 all turns off.When
Input voltage Vin+When increasing to above the breakdown voltage of D1 but be less than the breakdown voltage sum of D1 Yu D2, NPN tri-pole
Pipe Q1 turns off and NMOS Q2 opens.Correspondingly, C1 and C2 is charged, and C3 is not charged.When input electricity
Pressure Vin+When increasing to above the breakdown voltage sum of D1 Yu D2, NPN audion Q1 opens, the voltage clamp of C1
To voltage and the BE voltage of NPN audion Q1 of D2, and NMOS Q2 disconnects.Correspondingly, C3 is charged.
The charging interval of C3 can be determined by R5 and C3.The voltage of C3 will drive MOSFET 14, so that MOSFET 14
Open lentamente.Therefore, MOSFET 14 can be controlled operate in ESD protection area.Inrush current is limited, thus
MOSFET 14 is made to be protected.Meanwhile, set the unlatching of MOSFET 14 and close threshold value.
On the other hand, as input voltage Vin+It is decreased below the breakdown voltage sum of D1 with D2 but puncturing higher than D1
During voltage, NPN audion Q1 disconnects and NMOS Q2 opens.Therefore, C3 can be made to discharge immediately.The voltage of C3
Waveform vertical landing, the voltage of C3 drives MOSFET 14, and immediately followed by disconnecting MOSFET 14 again to stand
I.e. open PSU 10.During this period, can charge C3 lentamente as described above, inrush current is limited, and MOSFET
14 are protected.As input voltage Vin+When being decreased below the breakdown voltage of D1, NMOS Q2 disconnects and C1 electric discharge.
Obviously, teaching based on the embodiment shown in Fig. 1 and 2 and suggestion, it will be appreciated that there is it in those skilled in the art
Its various detailed circuit layout.
For example, during optical coupler is optionally added on hardware control circuit 12 with by electric power from optical coupler
Primary side be sent to the primary side of optical coupler.Fig. 3 shows the schematic diagram of PSU 10, and it comprises according to the application
The hardware control circuit 12 of another embodiment, wherein optical coupler U1 adds the hardware controls electricity shown in Fig. 2 to
Road 12.The primary side diode of optical coupler U1 and D2 concatenation, input voltage Vin+Voltage signal pass through optics
The current information of the primary side diode of bonder U1 obtains, and is occasionally delivered to the audion of primary side by light, as
This can utilize its current signal to be converted into voltage signal, and primary side can be obtained by the input voltage signal of primary side.
As shown in Figure 3, as input voltage Vin+During increase, the electric current of the Zener diode of U1 increases with identical oblique variability.
As input voltage Vin+During reduction, the electric current of the Zener diode of U1 reduces with identical oblique variability.Therefore, input voltage is worked as
When increasing or reduce, the primary side of U1 can obtain primary side input voltage signal.That is, input voltage Vin+State can pass
Deliver to the primary side of U1.
The technology contents of the present invention and technical characterstic have revealed that as above, but those of ordinary skill in the art are still potentially based on
Teachings of the present invention and announcement and make all replacements without departing substantially from spirit of the present invention and modification.Therefore, the protection model of the present invention
Enclose the content should being not limited to disclosed in embodiment, and the various replacement without departing substantially from the present invention and modification should be included, and be that this is special
Profit application claims are contained.
Claims (12)
1. a hardware control circuit, comprises:
ON/OFF threshold value control circuit, is configured to control the unlatching threshold value of input voltage and close threshold value；
Secondary power supply, is connected to described ON/OFF threshold value control circuit；
Charge/discharge circuit, is configured to be powered by described secondary circuit, and is configured to open crystalline substance with First Speed
Body pipe and charging capacitor by closing described transistor and the described capacitor that discharges with second speed, control letter to produce
Number controlling at least one output and control assembly, it is defeated for control an electronic circuit one that described at least one output controls assembly
Going out, wherein said second speed is higher than described First Speed；And
Control signal drive circuit, be configured to be fed to described control signal described at least one output control assembly.
2. hardware control circuit as claimed in claim 1, it is at least one gold that wherein said at least one output controls assembly
Genus-oxide semiconductor field effect transistor.
3. hardware control circuit as claimed in claim 1, wherein under the control of described charge/discharge circuit, described extremely
Few output controls assembly and is configured to connect with third speed when described input voltage is more than described unlatching threshold value, and
Described input voltage turns off with the fourth speed higher than third speed less than during described closedown threshold value.
4. hardware control circuit as claimed in claim 1, wherein said ON/OFF threshold value control circuit comprises the first resistance
Device, the first Zener diode and the second Zener diode；First side of wherein said first resistor is connected to described input
Voltage, the second side of described first resistor is connected to the negative electrode of described first Zener diode, described second Zener two pole
The negative electrode of pipe is connected to the anode of described first Zener diode, and the anode of described second Zener diode is connected to described
The base stage of the NPN audion of charge/discharge circuit.
5. hardware control circuit as claimed in claim 4, wherein said secondary power supply comprises described first Zener two pole
Pipe, described first capacitor and the first capacitor；Wherein said first capacitor is connected to described first Zener diode
Between anode and ground connection.
6. hardware control circuit as claimed in claim 5, wherein said charge/discharge circuit comprises the 3rd resistance further
Device, the 5th resistor and the second capacitor；Described transistor is nmos pass transistor, and described capacitor is the 3rd electric capacity
Device；The emitter stage of wherein said NPN audion is connected to described ground connection, and the collector of described NPN audion is connected to institute
State the grid of nmos pass transistor, described 3rd resistor and described second capacitor, the leakage of described nmos pass transistor
Pole is connected to described 3rd capacitor, and the source electrode of described nmos pass transistor is connected to described ground connection, described 5th capacitor
Connect described 3rd resistor with described 3rd capacitor to arrange the charge constant of described 3rd capacitor.
7. hardware control circuit as claimed in claim 6, wherein said control signal drive circuit comprises described
Nmos pass transistor and described 3rd capacitor.
8. hardware control circuit as claimed in claim 4, the resistance of wherein said first resistor is selected to obtain
Described control signal also limits the power consumption of described hardware control circuit.
9. hardware control circuit as claimed in claim 7, wherein said control signal drive circuit comprises use further
In the 4th capacitor controlling described nmos pass transistor.
10. hardware control circuit as claimed in claim 1, comprises optical coupler, wherein said optics further
Bonder comprises the diode being positioned at primary side and the audion being positioned at primary side, and described diode is obtained by current information
The voltage signal of described input voltage also transmits described current signal information to described audion by optocoupler, in order to by described
Input voltage transmits the primary side to described optical coupler from the primary side of described optical coupler.
11. 1 kinds of power supply units, comprise according to the hardware control circuit that in claim 1-10, any one is described.
12. 1 kinds of electronic installations, comprise according to the hardware control circuit that in claim 1-10, any one is described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154989.6A CN106160708B (en) | 2015-04-02 | 2015-04-02 | Hardware control circuit and its electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510154989.6A CN106160708B (en) | 2015-04-02 | 2015-04-02 | Hardware control circuit and its electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106160708A true CN106160708A (en) | 2016-11-23 |
| CN106160708B CN106160708B (en) | 2019-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510154989.6A Active CN106160708B (en) | 2015-04-02 | 2015-04-02 | Hardware control circuit and its electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114003539A (en) * | 2021-10-27 | 2022-02-01 | 苏州浪潮智能科技有限公司 | Server mainboard hot plug control protection circuit and protection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6194881B1 (en) * | 1999-05-17 | 2001-02-27 | Nmb (Usa), Inc | Switching power supply for lowered distribution system disturbance |
| CN101425797A (en) * | 2007-11-01 | 2009-05-06 | 深圳迈瑞生物医疗电子股份有限公司 | Slow opening fast shutting electronic switch circuit and control method thereof |
| CN203241994U (en) * | 2013-03-29 | 2013-10-16 | 昆达电脑科技(昆山)有限公司 | Hot-plug control device |
| US20140049301A1 (en) * | 2011-04-18 | 2014-02-20 | Koninklijke Philips N.V. | Semiconductor switch with reliable blackout behavior and low control power |
| CN104167923A (en) * | 2014-08-06 | 2014-11-26 | 广州金升阳科技有限公司 | Dynamic fast response circuit of switching power supply |
-
2015
- 2015-04-02 CN CN201510154989.6A patent/CN106160708B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6194881B1 (en) * | 1999-05-17 | 2001-02-27 | Nmb (Usa), Inc | Switching power supply for lowered distribution system disturbance |
| CN101425797A (en) * | 2007-11-01 | 2009-05-06 | 深圳迈瑞生物医疗电子股份有限公司 | Slow opening fast shutting electronic switch circuit and control method thereof |
| US20140049301A1 (en) * | 2011-04-18 | 2014-02-20 | Koninklijke Philips N.V. | Semiconductor switch with reliable blackout behavior and low control power |
| CN203241994U (en) * | 2013-03-29 | 2013-10-16 | 昆达电脑科技(昆山)有限公司 | Hot-plug control device |
| CN104167923A (en) * | 2014-08-06 | 2014-11-26 | 广州金升阳科技有限公司 | Dynamic fast response circuit of switching power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114003539A (en) * | 2021-10-27 | 2022-02-01 | 苏州浪潮智能科技有限公司 | Server mainboard hot plug control protection circuit and protection method |
| CN114003539B (en) * | 2021-10-27 | 2023-07-14 | 苏州浪潮智能科技有限公司 | Hot plug control protection circuit and protection method for server main board |
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| Publication number | Publication date |
|---|---|
| CN106160708B (en) | 2019-09-03 |
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Address after: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area, Nanjing Road, No. 388, Shanghai Applicant before: Shanghai Alcatel-Lucent Co., Ltd. |
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