CN103777554B - Hot swap protection circuit system - Google Patents
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- CN103777554B CN103777554B CN201410044950.4A CN201410044950A CN103777554B CN 103777554 B CN103777554 B CN 103777554B CN 201410044950 A CN201410044950 A CN 201410044950A CN 103777554 B CN103777554 B CN 103777554B
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Abstract
A hot swap protection circuit system comprises multiple integrated circuits and a mainframe module. Each integrated circuit comprises a protection module, an on-off module, an on-off control module and a control interface module, wherein the control interface module and the mainframe module are mutually connected through a bus. The input end of each on-off module is connected with a load power source outside the corresponding integrated circuit, and the output end of each on-off module is connected with a load outside the corresponding integrated circuit. The protection modules are used for performing real-time detection on the on-off modules. If the detection result exceeds a standard value, an action command requesting protection is transmitted to the control interface modules. The control interface modules are used for transmitting a protection action command to the on-off control modules and transmitting fault information to the mainframe modules. The on-off control modules are used for receiving the protection action command to the control interface modules to control on-off of the on-off modules. The mainframe modules are used for storing addresses of the integrated circuits where faults happen.
Description
Technical field
The application is related to a kind of method of electic protection circuit, more particularly, to a kind of distributed heat of employing integrated circuit ic
Plug hot swap protection circuit method
Background technology
Hot plug hot swap circuit design is applied widely, and effect is the components and parts of the equipment to hot plug, chip
A kind of safeguard measure.When the electric parameter of load exceedes its working stamndard, hot swap can reach guarantor with deenergization
The purpose of shield electronic equipment.
Current hot swap circuit is all to take discrete element to realize specific function to stack, and circuit is complex,
Design parameter is various, and because the error of discrete components and parts itself is larger, electrical characteristic distribution uniformity is also poor, furthermore
Because element is many, the chance that each sensitive signal is disturbed when pcb connects up just increases, and leads to circuit precision, and signal integrity drops
Low, also increase electromagnetic interference, particularly in high-power system, single discrete component bears power limited, and this is accomplished by many
No matter to the design initial stage also group lines in parallel, to realize function, causes the superposition of cost greatly rising and fault rate and error,
It is that later stage batch production all has very big hidden danger.These factors all can weaken stability and the security of electronic product, virtually
Increased cost, also can affect the competitiveness of product.
When a hot swap Circuits System contains multiple load, each load has a hot swap device switch
Protection, when one of load is broken down, the value such as electric current is above standard, its hot swap protection device disconnects electricity
Source, protects load.But in follow-up maintenance process, how quickly to search and determine this trouble point, prior art
In do not have solve scheme.
When therefore research staff will consider in hardware failure in design, how to realize accurately detecting, on the one hand
On the other hand protect whole circuit without prejudice, the also quick fault point of attendant to be helped, so as quick exclude therefore
Barrier is it is ensured that the reliability service of system and personal safety as well as the property safety.And the hot swap protection circuit of main flow is complex now, manufacture
Relatively costly, design flexibility and reliability have a lot of drawbacks.In order to solve the above problems, whole circuit should be protected not to be subject to
Infringement, helps the quick fault point of attendant again, so that rapidly removing faults are it is ensured that the reliability service of system and the person
Property safety.This application provides a kind of cost is relatively low, easy layout, reliability is good, manageable hot swap protection circuit
Method and system, are used for hot swap circuit integrated circuit ic (integrated circuit), using ic integrated circuit
Integrated Trait is solving existing technical problem.
Content of the invention
The invention discloses a kind of realize hot that is distributed, targeted, being easily managed by high density integrated circuit having ic
Swap protection circuit scheme.
A kind of hot plug hot swap protection circuit system, including multiple integrated circuits, host module；Wherein each described collection
Circuit is become to include respectively: protection module, switch module, controlling switch module, control interface module；Described control interface module is led to
Cross bus and described host module interconnection；
The input of described switch module is connected with the load power source of integrated circuit external, the output end of described switch module
It is connected with the load of integrated circuit external；
Described protection module is used for carrying out real-time detection to the parameter value of described switch module, and testing result is transported to control
Interface module processed, is additionally operable to testing result is judged, if testing result exceeds the scope of standard value, to described control
Interface module sends and action command is claimed；
Described control interface module be used for receiving described protection module sends action command is claimed after, to described control
Switch module processed sends protection act instruction, records failure message, sends failure message to host module, wherein carries place
The address of integrated circuit；
Described controlling switch module is used for controlling conducting and the shutoff of described switch module；When controlling switch module receives
The protection act instruction of described control interface module, controls the input of described switch module and the shutoff of output end；
Described host module is used for the address of the integrated circuit that storage is broken down.
Alternatively, described switch module is mos field effect transistor mosfet；Described mosfet's
Source electrode is connected with described load as the input of switch module, and drain electrode is as the output end of switch module and described load power source
Connect.
Alternatively, described protection module comprises current sensor, overcurrent protection ocp module；
Described current sensor is used for detecting the current value of described switch module, current value is converted to electric signal and sends to
Described ocp module；
Described ocp module is used for forwarding the electric signal of described current sensor detection to described control interface module, and sentences
Whether the described electric signal that breaks exceedes the standard value of electric current, if it exceeds the standard value of electric current, reports to described control interface module
Action command is claimed.
Alternatively, described protection module includes overvoltage protection ovp module, and described ovp module is used for detecting described switching molding
The input of block or output end voltage, judge described input or whether output end voltage exceedes input voltage or output voltage
The upper limit of standard value, if it exceeds the upper limit of the standard value of input voltage or output voltage, sends to described control interface module
Action command is claimed.
Alternatively, described protection module includes input under-voltage protection vin uvlo module；Described vin uvlo module is used
In the voltage of detection switch module input, when described input terminal voltage is less than the lower limit of the standard value of input voltage, to institute
State the transmission of control interface module and action command is claimed.
Alternatively, described protection module includes under-voltage protection vdd uvlo module, and described vdd uvlo module is used for detecting
The voltage of the integrated circuit pin vdd being connected with external integrated power supply, when the value of the voltage of pin vdd is less than threshold value
When, send to described control interface module and action command is claimed.
Alternatively, described switch control module includes field-effect transistor fet control module and field-effect transistor fet drives
Dynamic model block；Described field-effect transistor fet control module includes grid electrode drive module, grid under-voltage protection gate uvlo module,
Start under-voltage protection boost uvlo module, soft-start module；
Described grid electrode drive module is used for arranging the cut-in voltage of described switch module；
Described soft-start module is used for limiting the opening time of described switch module；
Described grid under-voltage protection gate uvlo module is used for carrying out under-voltage guarantor to the grid voltage of described switch module
Shield；
The described under-voltage protection boost uvlo module that starts is used for carrying out under-voltage protection to the pin vbst of integrated circuit；
Described field-effect transistor fet drive module is used for providing driving voltage to order about switching molding for described switch module
Block works.
Alternatively, described control interface module includes electrification reset por module, and described por module is used for storing fault letter
Breath, described fault message includes fault type.
Alternatively, described host module is additionally operable to store the address of each integrated circuit；Described host module passes through pmbus
Bus is connected with the control interface module of each integrated circuit；When receiving the failure message of integrated circuit transmission, preserve this event
Barrier message is simultaneously corresponding with the address of corresponding integrated circuit；
Alternatively, described IC interior also includes temperature sensor, and described temperature sensor detects described switching molding
The operating temperature of block, using described temperature value as electric signal transmission to control interface module.
Embodiments of the invention realize hot swap function with integrated circuit ic, overcome current hotswap design element
The shortcoming that number of packages is more, principle design and layout cloth, local anaesthesia are tired of and circuit is easily disturbed；With respect to discrete element, integrated electricity
The electrical characteristic uniformity of road ic is very high, can be controlled current detection accuracy ± 1% using advanced detection method.And it is traditional
Detection mode is ± 5%；With distributed structure/architecture, by pmbus real-time report backend load situation, system load balancing is allowed to adjust
It is easier, more in time；When certain node triggers protection mechanism, integrated circuit ic can be made a response rapidly, to protect rear end core
Piece is without damage.Report abort situation simultaneously, be easy to safeguard, normal work can be recovered after trouble shooting immediately；By pmbus
Bus comes the electric current of monitor in real time each integrated circuit node circuit, a kind of typical case's application scheme of voltage condition.Some wherein
Hot swap node targetedly can take safeguard measure when abnormal, and then guarantee system continuously works, and improves reliable
Property.
Brief description
Fig. 1 is the reference principle framework figure within integrated circuit ic of the present invention；
Fig. 2 is the typical practical applications Organization Chart of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the technical scheme of the application is described in detail.
If it should be noted that not conflicting, each feature in the embodiment of the present application and embodiment can mutually be tied
Close, all within the protection domain of the application.In addition, though showing logical order in flow charts, but in some situations
Under, can be with the step shown or described different from order execution herein.
A kind of hot plug hot swap protection circuit system, including multiple integrated circuits, host module；Wherein each described collection
Circuit is become to include respectively: protection module, switch module, controlling switch module, control interface module；Described control interface module is led to
Cross bus and described host module interconnection；
The input of described switch module is connected with the load power source of integrated circuit external, the output end of described switch module
It is connected with the load of integrated circuit external；
Described protection module is used for carrying out real-time detection to described switch module, and testing result is transported to control interface mould
Block, is additionally operable to testing result is judged, the value if testing result is above standard, and sending to described control interface module please
Protection act is asked to instruct；
Described control interface module be used for receiving described protection module sends action command is claimed after, to described control
Switch module processed sends protection act instruction, records failure message, sends failure message to host module, wherein carries place
The address of integrated circuit；
Described controlling switch module is used for receiving the protection act instruction of described control interface module, controls described switching molding
The input of block and the conducting of output end and shutoff；
Described host module is used for the address of the integrated circuit that storage is broken down.
With reference to Fig. 1, performance to be described.
Fig. 1 is the reference principle framework figure within the application integrated circuit ic,
Described switch module is mos field effect transistor mosfet；The source electrode conduct of described mosfet
The input of switch module is connected with described load, and drain electrode is connected with described load power source as the output end of switch module.
Metal oxide layer semiconductor field effect transistor (metal-oxide-semiconductor field-effect
Transistor, mosfet) it is a kind of field-effect transistor (field- that can be widely used in analog circuit and digital circuit
Effect transistor).Mosfet is different according to the polarity of its " passage ", can be divided into the mosfet of " N-shaped " and " p-type ", leads to
Often it is also called nmosfet and pmosfet, other referred to as still include nmos fet, pmos fet, nmosfet, pmosfet etc..
Mosfet has three electrode: g (grid), s(source electrodes) and d(drain electrode).
When enough big potential difference imposes between the grid g of mosfet and source electrode s, can shape between source electrode s and drain electrode
Become current channel, mosfet can allow electric current pass through, and different according to the magnitude of voltage imposing on grid g, can be by the passage of mosfet
The size of current flowing through also can be controlled and change.
Source electrode s and the current channel conducting between d that drains that mosfet conducting refers to, source electrode s connects the load of outside, and drain d
Connect external power source it is believed that mosfet conducting can be so that outside load and external power source establish a connection；
After mosfet conducting, flow through electric current between source electrode s and drain electrode d and controlled by according to the magnitude of voltage imposing on grid g, permissible
After thinking mosfet conducting, flow through integrated circuit external load and external power source by control according to the magnitude of voltage imposing on grid g
Electric current.
It is that between finger source electrode s and drain electrode d, current channel turns off that mosfet turns off.Source electrode s connects the load of outside, and drain electrode d connects
External power source can make outside load and external power source cancel annexation it is believed that mosfet turns off.
Described protection module comprises current sensor, overcurrent protection ocp module；
Described current sensor is used for detecting the current value of described switch module, current value is converted to electric signal and sends to
Described ocp module；
Described ocp module is used for forwarding the electric signal of described current sensor detection to described control interface module, and sentences
Whether the described electric signal that breaks exceedes the standard value of electric current, if it exceeds the standard value of electric current, reports to described control interface module
Action command is claimed.
IC interior is divided into five modules, switch module, protection module, field-effect transistor fet control module, field
Effect transistor fet drive module and control interface module.
Switch module, using mosfet, mosfet as switch application, during conducting, external loading and external loading power supply
Connect, and the electric current flowing through external loading and external power source can be controlled；When mosfet turns off, external loading and external power source disconnect
Connect.
The vin pin of integrated circuit, that is, the input of switch module, the load power source outside connection,
The vout pin of integrated circuit, that is, the load outside the output end connection of switch module.
Protection module is by having following functions with lower module:
Current sense function, is realized by current sensor, and current sensor detection is big by described mosfet current value
Little, mosfet electric current namely refers to flow through the electric current of source electrode s and drain electrode d it is also possible to be considered to flow through external loading with outward
The electric current of portion's power supply, current information is fed back to protection module by current sensor.
Overcurrent protection ocp: determine whether to reach maximum current according to the current information that current sensor detects, when reaching
Control interface module is signaled to, control interface module passes through field-effect transistor fet control module and field effect after maximum current
Transistor fet drive module is answered to control mosfet to turn off.
Described protection module includes overvoltage protection ovp module, and described ovp module is used for detecting the input of described switch module
End or output end voltage, judge described input or whether output end voltage exceedes the standard value of input voltage or output voltage
The upper limit, if it exceeds the upper limit of the standard value of input voltage or output voltage, sends to described control interface module and is claimed
Action command.
The voltage of overvoltage protection ovp: detection input and/or output end voltage,
The input of switch module is connected with external loading power supply,
The output end of switch module is connected with external loading.
When input or output voltage exceed certain threshold value, overvoltage protection ovp will signal to control interface module, control
Interface module is passed through field-effect transistor fet control module and controls described mosfet to close with field-effect transistor fet drive module
Disconnected.
Described protection module includes input under-voltage protection vin uvlo module；Described vin uvlo module is opened for detection
Close the voltage of module input, when described input terminal voltage is less than the lower limit of the standard value of input voltage, connect to described control
Mouth module sends and action command is claimed.
The input pin vin pin of input pin voltage under-voltage protection vin uvlo: switch module is connected to switch
The external loading power supply of module, when described input pin vin pin voltage is less than certain thresholding, input pin voltage is owed
Pressure protection vin uvlo will send signals to control interface module, and control interface module controls mould by field-effect transistor fet
Block and field-effect transistor fet drive module control described mosfet to turn off.
Described protection module includes under-voltage protection vdd uvlo module, and described vdd uvlo module is used for detection and outside collection
Become the voltage of the integrated circuit pin vdd that circuit power is connected, when the value of the voltage of pin vdd is less than threshold value, to described
Control interface module sends and action command is claimed.
Ic power under-voltage protection vdd uvlo: the operating voltage of integrated circuit is 12v, if during real work,
Less than 12v, integrated circuit cannot normal work or break down for the operating voltage of integrated circuit.Accordingly, it would be desirable to integrated
The operating voltage of circuit is monitored and carries out low-voltage protection, and practical solution is: the vdd pin of integrated circuit connects integrated electricity
The power supply on road, detects to the vdd pin voltage of integrated circuit, when vdd pin voltage is less than certain thresholding, integrated circuit
Line under-voltage protection vdd uvlo will send signals to control interface module, and control interface module passes through field-effect transistor fet
Control module and field-effect transistor fet drive module control described mosfet to turn off.
Described switch control module includes field-effect transistor fet control module and field-effect transistor fet drive module；
Field-effect transistor fet control module includes grid electrode drive module, grid under-voltage protection gate uvlo module, opens
Dynamic under-voltage protection boost uvlo module, soft-start module；
Described grid electrode drive module is used for arranging the cut-in voltage of described switch module；
Described soft-start module is used for limiting the opening time of described switch module；
Described grid under-voltage protection gate uvlo module is used for carrying out under-voltage guarantor to the grid voltage of described switch module
Shield；
The described under-voltage protection boost uvlo module that starts is used for carrying out under-voltage protection to the pin vbst of integrated circuit；
Described field-effect transistor fet drive module is used for providing driving voltage to order about switching molding for described switch module
Block works.
Field-effect transistor fet control module major function has:
The general rear end of outside line of soft start soft start: integrated current can connect the electric capacity of much big capacitances, and works as
When mosfet opens, can charge to electric capacity, now electric current is very big.The effect of soft start soft start circuit is will be described
The time lengthening that mosfet opens, and limit current within limits, it is to avoid electric current excessive damage circuit.Its outside
Pin ss pin is used for arranging the time that described mosfet opens.
Field-effect transistor fet drive module major function: need to meet the driving voltage of mosfet because mosfet opens
Have to be larger than vgs (th) voltage, the chip that the present embodiment utilizes is nmosfet, so needing to raise driving voltage and wait
In vout+vbst voltage.
Described control interface module also includes electrification reset por module, and described por module is used for storing fault message, institute
State fault message and include fault type.
Control interface module major function: the information of control interface module is fed back to by modules, and by this information
It is sent to the host module of outside by smbus signal, such as: read the current value size flowing through mosfet by current sensor
It is sent to external host module, inform the power consumption of current system.In the event of protection act, (overcurrent protection ocp or overvoltage are protected
Shield ovp etc.), protection information can be stored electrification reset por module, after start next time, electrification reset por module can be read
In information, understand which kind of specifically there occurs is abnormal.
Described host module is additionally operable to store the address of each integrated circuit；Described host module pass through pmbus bus with
The control interface module of each integrated circuit connects；When receiving the failure message of integrated circuit transmission, preserve this failure message
And it is corresponding with the address of corresponding integrated circuit；
Temperature sensor is also included, described temperature sensor detects the mosfet's within ic inside described integrated circuit ic
Operating temperature, temperature sensor is connected with control interface module, and temperature sensor is using described temperature value as electric signal transmission
To control interface module.
The operating voltage of mofet is 1.8v, and the operating voltage of integrated circuit is 12v, the integrated electricity of v dd pin and outside
Road power supply is connected, and after the voltage that the voltage conversion of 12v is 1.8v by module 1.8vldo, powers to mosfet.
Digital control acquiescence monitors that smbus EBI has three ports: smbus_data, smbus_clk, faultb,
Realize the interconnection with host module and other EBIs by three ports.
Pin rocp is the overcurrent protection external world resistance pins of integrated circuit, and for an external resistance, resistance value is permissible
Select, change the inherent threshold value size of overcurrent protection by the selection of resistance value.
The pin en/uvlo of integrated circuit enables pin for under-voltage protection, for controlling whether to open the work(of under-voltage protection
Energy
Fig. 2 is the typical practical applications Organization Chart of the application, hot swap circuit board is provided with integrated circuit ic and (includes
Hot swap1 in Fig. 2, hot swap2, hot swap3, hot swapn).Integrated electricity on each hot swap circuit board
It is connected with pmbus bus between the ic of road.
Cpu(in Fig. 2 includes cpu1, cpu2, cpu3, cpus in Fig. 2) for loading, on hot swap circuit board
The source electrode s of the mosfet of integrated circuit ic is connected.Load power source is connected with the drain electrode d of mosfet.
Power connector in Fig. 2 is power supply, and ram is the memory that cpu is carried, and does load and uses.
Load can also be CD, the various electronic equipment such as floppy disk.
When one of integrated circuit breaks down, the overcurrent protection of some pin such as occurs, overvoltage protection, or
Temperature is too high when needing to turn off, and integrated circuit makes mosfet be converted to shutoff by conducting state automatically, and reports host module,
Host module has the address of each integrated circuit, and host module records the integrated circuit breaking down, for follow-up fault dimension
Repair work, find the node breaking down, provides convenient.
The application ic of one high integration realizes the hot swap function of current discrete element architecture, integrated level
Height, layout is easy.Distributed structure/architecture, can avoid traditional hot swap structure high current path excessively to concentrate, hot-spot and
A large amount of impacts to pcb circuit board signal integrality for the pcb via, can reduce electromagnetic compatibility emc simultaneously；Using distributed structure/architecture
Precisely real-time detection load electricity consumption situation, individual node fault is unlikely to affect the normal work of whole system；Total using pmbus
Line, digitizes reporting system status, can make the more preferable equally loaded of system, improves product stability and simplifies maintenance task.
Claims (10)
1. a kind of hot plug hot swap protection circuit system, including multiple integrated circuits, host module；Wherein each described integrated
Circuit includes respectively: protection module, switch module are it is characterised in that each described integrated circuit also includes: controlling switch module,
Control interface module；Described control interface module passes through bus and described host module interconnection；
The input of described switch module is connected with the load power source of integrated circuit external, the output end of described switch module and collection
The load becoming circuit external connects；
Described protection module is used for carrying out real-time detection to the parameter value of described switch module, testing result is transported to control and connects
Mouth module, is additionally operable to testing result is judged, if testing result exceeds the scope of standard value, to described control interface
Module sends and action command is claimed；
Described control interface module be used for receiving described protection module sends action command is claimed after, open to described control
Close module and send protection act instruction, record failure message, send failure message to host module, wherein carry the integrated of place
The address of circuit；
Described controlling switch module is used for controlling conducting and the shutoff of described switch module；Described in receiving when controlling switch module
The protection act instruction of control interface module, controls the input of described switch module and the shutoff of output end；
Described host module is used for the address of the integrated circuit that storage is broken down.
2. the system as claimed in claim 1 is it is characterised in that described switch module is metal oxide semiconductor field-effect crystalline substance
Body pipe mosfet；The source electrode of described mosfet is connected with described load power source as the input of switch module, and drain electrode conduct is opened
The output end closing module is connected with described load.
3. the system as claimed in claim 1 is it is characterised in that described protection module comprises current sensor, overcurrent protection ocp
Module；
Described current sensor is used for detecting the current value of described switch module, by current value be converted to electric signal send to described
Ocp module；
Described ocp module is used for forwarding the electric signal of described current sensor detection to described control interface module, and judges institute
State the standard value whether electric signal exceedes electric current, if it exceeds the standard value of electric current, report request to described control interface module
Protection act instructs.
4. the system as claimed in claim 1 is it is characterised in that described protection module includes overvoltage protection ovp module, described
Ovp module is used for detecting input or the output end voltage of described switch module, judges that described input or output end voltage are
The upper limit of the no standard value exceeding input voltage or output voltage, if it exceeds the standard value of input voltage or output voltage is upper
Limit, sends to described control interface module and action command is claimed.
5. the system as claimed in claim 1 is it is characterised in that described protection module includes input under-voltage protection vin uvlo
Module；Described vin uvlo module is used for the voltage of detection switch module input, when described input terminal voltage is less than input electricity
During the lower limit of standard value of pressure, send to described control interface module and action command is claimed.
6. the system as claimed in claim 1 is it is characterised in that described protection module includes under-voltage protection vdd uvlo module,
Described vdd uvlo module is used for the voltage of the integrated circuit pin vdd that detection is connected with external integrated power supply, works as pin
When the value of the voltage of vdd is less than threshold value, sends to described control interface module and action command is claimed.
7. system as claimed in claim 2 is it is characterised in that described controlling switch module includes field-effect transistor fet control
Molding block and field-effect transistor fet drive module；Described field-effect transistor fet control module include grid electrode drive module,
Grid under-voltage protection gate uvlo module, starts under-voltage protection boost uvlo module, soft-start module；
Described grid electrode drive module is used for arranging the cut-in voltage of described switch module；
Described soft-start module is used for limiting the opening time of described switch module；
Described grid under-voltage protection gate uvlo module is used for carrying out under-voltage protection to the grid voltage of described switch module；
The described under-voltage protection boost uvlo module that starts is used for carrying out under-voltage protection to the pin vbst of integrated circuit；
Described field-effect transistor fet drive module is used for providing driving voltage to order about switch module work for described switch module
Make.
8. the system as claimed in claim 1 is it is characterised in that described control interface module includes electrification reset por module, institute
State por module to be used for storing fault message, described fault message includes fault type.
9. the system as claimed in claim 1 is it is characterised in that described host module is additionally operable to store the ground of each integrated circuit
Location；Described host module is connected with the control interface module of each integrated circuit by pmbus bus；Send out when receiving integrated circuit
During the failure message sending, preserve this failure message corresponding with the address of corresponding integrated circuit.
10. the system as claimed in claim 1 is it is characterised in that described IC interior also includes temperature sensor, described
Temperature sensor detects the operating temperature of described switch module, using described temperature value as electric signal transmission to control interface mould
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410044950.4A CN103777554B (en) | 2014-02-07 | 2014-02-07 | Hot swap protection circuit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410044950.4A CN103777554B (en) | 2014-02-07 | 2014-02-07 | Hot swap protection circuit system |
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| CN103777554A CN103777554A (en) | 2014-05-07 |
| CN103777554B true CN103777554B (en) | 2017-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104467395A (en) * | 2014-12-30 | 2015-03-25 | 浪潮电子信息产业股份有限公司 | Hot-plug power source system and power source control device and method |
| CN106326079A (en) * | 2016-08-19 | 2017-01-11 | 浪潮电子信息产业股份有限公司 | Method for diagnosing power failure reason of single node in RACK cabinet |
| CN106199369B (en) * | 2016-08-31 | 2018-10-09 | 烽火通信科技股份有限公司 | A kind of method and system of OR-ing MOSFET On-line Fault Detections |
| CN108227650B (en) * | 2017-12-20 | 2020-05-22 | 中核控制系统工程有限公司 | Security-level DCS (distributed control system) module hot plug method |
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| US6353523B1 (en) * | 1999-06-11 | 2002-03-05 | Actil Ltd | Hot-swap protection circuitry |
| CN201673497U (en) * | 2010-05-28 | 2010-12-15 | 深圳华北工控股份有限公司 | Hot plug protection device of computer peripherals |
| CN102184154A (en) * | 2011-04-15 | 2011-09-14 | 浪潮(北京)电子信息产业有限公司 | System and method for realizing hot plug of equipment |
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| US6353523B1 (en) * | 1999-06-11 | 2002-03-05 | Actil Ltd | Hot-swap protection circuitry |
| CN201673497U (en) * | 2010-05-28 | 2010-12-15 | 深圳华北工控股份有限公司 | Hot plug protection device of computer peripherals |
| CN102184154A (en) * | 2011-04-15 | 2011-09-14 | 浪潮(北京)电子信息产业有限公司 | System and method for realizing hot plug of equipment |
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| CN103777554A (en) | 2014-05-07 |
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