CN205791499U - A kind of hot Atach & Detach power supply protection circuit and plug-in type monitor thereof - Google Patents
A kind of hot Atach & Detach power supply protection circuit and plug-in type monitor thereof Download PDFInfo
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- CN205791499U CN205791499U CN201620259998.1U CN201620259998U CN205791499U CN 205791499 U CN205791499 U CN 205791499U CN 201620259998 U CN201620259998 U CN 201620259998U CN 205791499 U CN205791499 U CN 205791499U
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Abstract
This utility model provides a kind of hot Atach & Detach power supply protection circuit and plug-in type monitor thereof; described hot Atach & Detach power supply protection circuit includes: power conversion module, switch module, card module slot and current-limiting resistance; described switch module is connected with the outfan of described power conversion module; described switch module is connected to described card module slot by described current-limiting resistance, and described card module slot is connected with the card module of external equipment.This utility model is prevented from power supply prime has Voltage Drop situation largely when hot plug card module, prevents the power converting circuit of plug-in type monitor from locked situation occur simultaneously；Meet while plug-in type monitor normally works, owing to the voltage difference at described current-limiting resistance two ends is less, and do not affect the card module normal power supply of rear class.
Description
Technical field
This utility model relates to a kind of hot Atach & Detach power supply protection circuit, particularly relates to the hot Atach & Detach power supply protection circuit of a kind of plug-in type monitor.
Background technology
In plug-in type monitor, user is in use for convenience, parameters measurement module can be matched flexibly, the plug-in type parameters measurement module of monitor with joined choosing can be separated, this plug-in type parameters measurement module is referred to as card module or plug-in parameter module, when actually used, monitor is that card module is powered by being positioned at the card module slot of monitor self or external auxiliary plug-in case.
In the power supply plan of existing plug-in type monitor, monitor host and plug-in type parameters measurement module part it is divided in plug-in type monitor, here main frame refers in particular to except the part beyond card module in the system of monitor, and described card module comprises external auxiliary plug-in case；Card module is powered by card module slot with monitor host, in card module slot, the connection signal packet of card module and monitor host is powered containing power supply and card module detects signal in place, and wherein card module detects signal MCU in monitor host in place and identifies whether current groove position has access card module.
A power converting circuit is had in monitor host, this circuit produces a bus voltage VBUS, voltage of VBUS is mainly used in monitor host internal circuit and powers, after voltage of VBUS is controlled by certain ON-OFF control circuit simultaneously, output VBUS_EXT voltage, this voltage is mainly used in the external card module of monitor host and uses, and in monitor, ON-OFF control circuit here mostly is metal-oxide-semiconductor and control circuit composition thereof.
Certain current-limiting protection measure is had in power converting circuit; when the electric current of rear class output is excessive, detecting through current limliting, power converting circuit can close the output of rear class VBUS; to protect late-class circuit; in general monitor system design, this power protection is often the protection of locked type, i.e. when there is overcurrent condition; power supply can disconnect output always; until extracting power line, after getting rid of over current fault, reopen monitor.
In the use of current plug-in type monitor, can often there is card module is carried out the operation of hot plug, as shown in Figure 1, in card module slot, normal, often in card module in order to ensure the power supply of card module, there are some input capacitances, by the characteristic of electric capacity itselfIt is known that, the voltage variety of the electric current and electric capacity two ends that flow through capacitor loop is directly proportional, it is inversely proportional to transformation period length, the electric current that the voltage at electric capacity two ends has when the short time changes the most greatly flows through capacitor loop, this situation can occur in the when that card module being carried out hot plug in a large number, this just produces great risk to the circuit before VBUS_EXT, and these risks include following two aspect.
When first aspect, hot plug card module, when overcurrent condition occurs, during as being also not up to power converting circuit locked threshold value, the power converting circuit of prime can have the large current load of moment because of rear class, and cause output voltage VBUS to fall or decline suddenly, here the degree of Voltage Drop is proportional with dash current size, dash current is the biggest, Voltage Drop is the biggest, because voltage of VBUS powers to monitor host remaining circuit part, when hot plug, VBUS occur largely Voltage Drop time, other circuit operation irregularities can be caused；Meanwhile, because the output loading of power converting circuit is more, its cut-off current is also generally larger than the load current value of the control MOS of VBUS_EXT, when repeatedly hot plug card module occurs, owing to repeatedly plug can cause metal-oxide-semiconductor caloric value to accumulate, the control end metal-oxide-semiconductor reaching cause the most afterwards VBUS_EXT burns so that it is short circuit.
When second aspect, hot plug card module, overcurrent condition occur, and overcurrent value reaches the threshold value that power converting circuit is locked, at this moment power converting circuit can enter locking state, disconnect the output of VBUS, and then cause the host machine part power-off of monitor to enter off-mode.Simultaneously, when the locked threshold value that hot plug card module overcurrent value reaches prime power converting circuit occurs, the current value controlling metal-oxide-semiconductor flowing through VBUS_EXT also can be more than its rated working current value largely, thus the control end metal-oxide-semiconductor directly resulting in VBUS_EXT burns so that it is short circuit.
Summary of the invention
Technical problem to be solved in the utility model is to need to provide one to be prevented from power end and have Voltage Drop situation largely when hot plug card module, prevents the power converting circuit of monitor from the hot Atach & Detach power supply protection circuit of plug-in type monitor of lock-up condition occur simultaneously.
To this; this utility model provides a kind of hot Atach & Detach power supply protection circuit; including: power conversion module, switch module, card module slot and current-limiting resistance; described switch module is connected with the outfan of described power conversion module; described switch module is connected to described card module slot by described current-limiting resistance, and described card module slot is connected with the card module of external equipment.
Further; also include tension measuring circuit and for controlling the locked circuit of protection of described switch module according to voltage measurements; described tension measuring circuit is connected in the two ends of described current-limiting resistance in parallel, and the locked circuit of described protection is connected with described tension measuring circuit.
Further, also including voltage comparator circuit, described tension measuring circuit is connected to the locked circuit of described protection by voltage comparator circuit.
Further, also include that ON-OFF control circuit, the locked circuit of described protection are connected to described switch module by ON-OFF control circuit.
Further, also include that predeterminated voltage module, described predeterminated voltage module are connected with described voltage comparator circuit；Or, described predeterminated voltage module is built in described voltage comparator circuit.
Further, also include that MCU, described MCU circuit locked with described protection is connected.
Further, being additionally included in a testing circuit, described testing circuit in place is connected to described MCU.
Further, described testing circuit in place is connected with the contact that contacts of described card module slot.
Further, described switch module includes that metal-oxide-semiconductor, described current-limiting resistance are NTC resistance.
This utility model also provides for a kind of plug-in type monitor, includes hot Atach & Detach power supply protection circuit as above, and the card module slot of described hot Atach & Detach power supply protection circuit is connected with the card module of described plug-in type monitor.
Compared with prior art, the beneficial effects of the utility model are: after current-limiting resistance is connected to the VBUS_EXT Control of Voltage metal-oxide-semiconductor of switch module, signal is triggered again by output overcurrent after tension measuring circuit and voltage comparator circuit, stream triggering signal function is crossed after protecting locked circuit at this, the metal-oxide-semiconductor of the VBUS_EXT of switch module is controlled, when there is overcurrent condition in hot plug card module, VBUS_EXT power supply is carried out locked protection, to prevent the power supply VBUS of VBUS_EXT power supply prime from having Voltage Drop situation largely when hot plug card module, there is locked situation in the power converting circuit simultaneously preventing plug-in type monitor, it is no longer necessary to after user extracts power line turn back on and just can normally use monitor.
In this utility model, current-limiting resistance preferably employs the NTC resistance with certain Negative temperature effect, temperature its resistance value the highest of this NTC resistance is the least, when using NTC resistance, restriction to loop current when can efficiently accomplish hot plug card module, to prevent voltage of VBUS from having Voltage Drop situation largely, meets when normally working simultaneously, the voltage difference at current-limiting resistance two ends is less, and does not affect the card module normal power supply of rear class.
In this utility model; also comprise MCU and for producing the locked circuit of protection of locked removing pulse signal; this locked removing pulse signal can be after VBUS_EXT power supply be by locked protection; for removing the state of locked protection circuit; to ensure in the case of not extracting power line and turning back on, user can be allowed normally to use monitor and card module.
Accompanying drawing explanation
Fig. 1 is the circuit module schematic diagram of a kind of embodiment of this utility model；
Fig. 2 is the circuit module schematic diagram of this utility model another kind embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings, preferably embodiment of the present utility model is described in further detail.
Embodiment 1:
As shown in Figure 1; the present embodiment provides a kind of hot Atach & Detach power supply protection circuit; including: power conversion module 1, switch module 2, card module slot 3 and current-limiting resistance 4; described switch module 2 is connected with the outfan of described power conversion module 1; described switch module 2 is connected to described card module slot 3 by described current-limiting resistance 4, and described card module slot 3 is connected with the card module 5 of external equipment.Described external equipment can be preferably plug-in type monitor.
In the present embodiment, described switch module 2 uses metal-oxide-semiconductor；Described current-limiting resistance 4 is NTC resistance；nullAbove-mentioned current-limiting resistance 4 uses the NTC resistance with certain Negative temperature effect，Temperature its resistance value the highest of described NTC resistance is the least，Described NTC resistance is connected at the VBUS_EXT power supply output control of plug-in type monitor main frame，To realize the restriction to dash current when carrying out hot plug，Its specific works principle is: after accessing NTC resistance，When card module 5 described in hot plug，The voltage at card module 5 input capacitance two ends will become by NTC resistance and the input capacitance dividing potential drop to VBUS_EXT，The pressure value of this dividing potential drop is by less than original VBUS_EXT，Reduce the voltage variety of card module 5 input capacitance，And then reduce the electric current of capacitor loop，Negative temperature effect due to NTC resistance itself，When after normal access card module 5，Because NTC resistance can flow through certain electric current，Its temperature can raise，And then NTC resistance can decline，The pressure drop at NTC two ends can be the least，The voltage of the card module 5 of supply rear class will be close to VBUS_EXT voltage，And then ensure that the normal work of card module 5.
Embodiment 2:
As shown in Figure 2; on the basis of embodiment 1; the present embodiment also includes tension measuring circuit 6, voltage comparator circuit 7, ON-OFF control circuit 8 and protects locked circuit 9; described tension measuring circuit 6 is connected in the two ends of described current-limiting resistance 4 in parallel, for sampling the voltage at current-limiting resistance 4 two ends；Described tension measuring circuit 6 is connected to the locked circuit of described protection 9 by voltage comparator circuit 7, and the locked circuit of described protection 9 is connected to described switch module 2 by described ON-OFF control circuit 8.The locked circuit of described protection 9 is for controlling described switch module 2 according to voltage measurements; such as; the locked circuit of described protection 9 is for the comparative result according to current-limiting resistance 4 both end voltage value and preset voltage value and then controls switch module 2; when the voltage at described current-limiting resistance 4 two ends is more than preset voltage value; ON-OFF control circuit 8 closing switch module 2; make late-class circuit disconnect, thus reach the effect of overcurrent protection.
In circuit shown in Fig. 2, tension measuring circuit 6 is for gathering the voltage at current-limiting resistance 4 two ends, this voltage reflects the electric current that current-limiting resistance 4 is flow through, and because this electric current is VBUS_EXT late-class circuit electric current, be also VBUS_EXT controls the electric current that in switch module 2, metal-oxide-semiconductor flows through.The input of voltage comparator circuit 7 is the voltage after tension measuring circuit 6 gathers and a preset voltage value, and resistance value and load current when preset voltage value here is normally worked by resistance determine.The output that input is voltage comparator circuit 7 of the locked circuit of described protection 9; comparative result for the voltage according to resistance two ends with preset voltage value sends protects locked signal to ON-OFF control circuit 8; i.e. when the voltage at described current-limiting resistance 4 two ends is more than preset voltage value; ON-OFF control circuit 8 closing switch module 2; make late-class circuit disconnect, thus reach the effect of overcurrent protection.
nullParticularly as follows: when card module 5 is carried out hot plug，When there is excessive dash current in plug moment，The electric current flowing through resistance increases，The voltage obtained after tension measuring circuit 6 compares with predeterminated voltage，Because the voltage after sampling is more than predeterminated voltage，Output overcurrent is triggered signal by voltage comparator circuit 7，This is crossed stream triggering signal and receives the locked circuit 9 of protection，The metal-oxide-semiconductor control signal of the switch module 2 of VBUS_EXT power supply is exported after the locked circuit of overprotection 9，Turn off the metal-oxide-semiconductor of switch module 2，Cut off VBUS_EXT power supply，And then protection VBUS_EXT front stage circuits，The metal-oxide-semiconductor making switch module 2 disconnects the output of VBUS_EXT when just there is overcurrent condition，And the voltage of step voltage VBUS has and falls largely before preventing the metal-oxide-semiconductor of switch module 2.
In addition; because protecting locked circuit 9 that output can be kept to turn off the signal of MOS; so having no progeny when metal-oxide-semiconductor closes; even if flowing through NTC resistance two ends electric current is zero; when comparing with predeterminated voltage after voltage sample; when not producing stream triggering signal; protect the locked circuit 9 still can the locked signal of output protection; the metal-oxide-semiconductor making switch module 2 is constantly in the state of shutoff; if without protecting locked circuit 9; ON-OFF control circuit 8 meeting is not because triggering over-current signal, and then the metal-oxide-semiconductor of switch module 2 closes and has no progeny and can reopen, it is to avoid occur repeatedly switching the situation of metal-oxide-semiconductor.If this also avoids the card module 5 of plug when itself having fault to cause stream, after accessing out of order card module 5, during because repeatedly switching metal-oxide-semiconductor, repeatedly cause metal-oxide-semiconductor overcurrent condition, and cause the drawback that metal-oxide-semiconductor burns.
Further, the present embodiment also includes that predeterminated voltage module 11, described predeterminated voltage module 11 are connected with described voltage comparator circuit 7；Or, described predeterminated voltage module 11 is built in described voltage comparator circuit 7.
For ensureing monitor occurs when normally working, in the case of the resistance of NTC resistance declines, when there is overcurrent condition in hot plug card module 5, protect locked circuit 9 still can realize defencive function, the present embodiment magnitude of voltage default for voltage comparator circuit 7 need to consider NTC resistance reduction amount of resistance when complete machine normally works, it is specially, by predeterminated voltage module 11, a suitable predeterminated voltage is set, such as: the voltage at two ends when measuring the work of NTC resistance maximum temperature, divided by electric current at that time, the minima of the NTC resistance obtained, it is multiplied by a self-defined current value the most again and to obtain arrival predeterminated voltage, self-defined current value must be more than electric current during normal work simultaneously less than the rated current of metal-oxide-semiconductor.It is worth mentioning that; discounting for this factor; will appear under monitor normal operation circumstances; during hot plug; VBUS_EXT controls metal-oxide-semiconductor and overcurrent condition occurs, and causing voltage comparator circuit 7 will not trigger signal and the locked circuit 9 of protection is carried out locked situation by output overcurrent because NTC resistance reduces.
Further, as in figure 2 it is shown, the present embodiment also includes MCU and testing circuit in place, described MCU circuit locked with described protection 9 is connected；Described testing circuit in place is connected to the locked circuit of described protection 9 by MCU, and described testing circuit in place is connected with the contact 10 that contacts of described card module slot 3.
nullIn circuit shown in Fig. 2，It is additionally included in a testing circuit，When card module 5 is accessed card module slot 3，In addition to card module 5 can be powered by card module slot 3，Also the detection in place for card module 5 of the contact contact 10 is had on card module 5，The detection port of MCU is received in this contact，When there being card module 5 to access，Contact event can be detected by MCU，In current plug-in type monitor，The detection of this contact contact 10 is typically only used for the detection in place of card module 5，Unlike the prior art，In the present embodiment，Also using contact event as the locked clear signal protecting locked circuit 9，When MCU detects that card module 5 is in place，Output is for realizing the locked removing pulse signal of protection，To remove the locking state protecting locked circuit 9，To ensure the MOS switch normal circuit operation of VBUS_EXT，Accomplish when occurring that circuit is locked，Normal condition is automatically restored to without the intervention circuit of operator，Depending on metal-oxide-semiconductor service time when the pulse width of the locked removing pulse signal exported here is designed according to side circuit by MCU.
This locked removing pulse signal is sent by the MCU in monitor the machine, is a pulse signal, is used for realizing the most locked and protection, and the level time of this pulse signal was determined by the service time controlling metal-oxide-semiconductor of VBUS_EXT.Here should be noted; the locked removing pulse signal limited in the present embodiment is sent by MCU; the MCU of testing circuit in place whether this MCU sending locked removing pulse signal is not limited to be connected with card module 5 is same MCU; as long as the control circuit input of the control OS of VBUS_EXT is received in the finally output of the locked circuit 9 of protection, for realizing the control to metal-oxide-semiconductor.
The circuit workflow of the present embodiment is as follows: when without accessing card module 5, after plug-in type monitor powers on, outside without card module 5, the control metal-oxide-semiconductor no current of VBUS_EXT, therefore locked circuit 9 is protected to be triggered, the control metal-oxide-semiconductor of VBUS_EXT is unlocked, when hot plug, there is overcurrent condition, locked circuit 9 is protected to be triggered, the locked signal of output protection, the locked signal function of this protection is in the metal-oxide-semiconductor of switch module 2, turn off metal-oxide-semiconductor, disconnect the output of VBUS_EXT, shutoff along with metal-oxide-semiconductor, the electric current flowing through NTC resistance declines, voltage comparator circuit 7 will not trigger signal by output overcurrent, but protect locked circuit 9 still in locking state, continue to turn off metal-oxide-semiconductor.Now, if card module 5 continues in card module slot 3, then there will be no VBUS_EXT power supply to export, protect metal-oxide-semiconductor.After extracting card module 5, during again insertable into module, MCU can detect card module 5 state in place; and then export locked removing pulse signal; remove the locked guard mode protecting locked circuit 9, protect the output of locked circuit 9 to control VBUS_EXT and control metal-oxide-semiconductor conducting, power for card module 5.Because an only pulse signal of MCU output, after the high level of this pulse signal, the output of locked circuit 9 is protected again to be controlled by the output of voltage comparator circuit 7.
It is noted herein that, after there is overcurrent condition in plug for the first time, when again plugging, if itself there is short trouble in card module 5, when the most again plugging, after MCU detects signal in place, output is for realizing the locked removing pulse signal of protection, metal-oxide-semiconductor reopens, output VBUS_EXT voltage, at this moment itself there is short trouble due to card module 5, NTC resistance both end voltage increases, still there will be protection lock-up condition, i.e. there will be the situation disconnecting VBUS_EXT, the most also after can be by plug several times, find that card module 5 non-operational state can recognize that card module 5 fault by monitor.During if normal plug-in module plugs again, owing in previous plug, the electric capacity of card module 5 has been electrically charged, the voltage variety of its electric capacity reduces, and then the dash current flowing through capacitor loop can reduce, there will not be overcurrent condition, here different because of operator, may be after plugging stream for the first time, the interval time of second time plug is oversize, and after causing electric capacity electric discharge, during plug, capacitance voltage changes quantitative change greatly again, and overcurrent condition occurs again, but if the fault-free of card module 5 own, only need to plug several times more, can normally work.
It should be noted that, when plug-in type monitor designs, if control the rated current application scenario much larger than VBUS_EXT load current of metal-oxide-semiconductor for VBUS_EXT, during as having only to hot plug card module 5, only VBUS_EXT is controlled MOS and carry out current limliting, prevent VBUS from having Voltage Drop largely, without doing the action disconnecting VBUS_EXT, also can be only at control metal-oxide-semiconductor one the NTC resistance of series connection of VBUS_EXT, as described in Example 1, i.e. omit tension measuring circuit 6, voltage comparator circuit 7, protect the locked removing pulse signal part that locked circuit 9 and MCU exports.
After current-limiting resistance 4 is connected to the VBUS_EXT Control of Voltage metal-oxide-semiconductor of switch module 2 by the present embodiment, signal is triggered again by output overcurrent after tension measuring circuit 6 and voltage comparator circuit 7, stream triggering signal function is crossed after protecting locked circuit 9 at this, the metal-oxide-semiconductor of the VBUS_EXT of switch module 2 is controlled, when there is overcurrent condition in hot plug card module 5, VBUS_EXT power supply is carried out locked protection, to prevent the power supply VBUS of VBUS_EXT power supply prime from having Voltage Drop situation largely when hot plug card module 5, there is locked situation in the power converting circuit simultaneously preventing plug-in type monitor, it is no longer necessary to after user extracts power line turn back on and just can normally use monitor.
In the present embodiment, current-limiting resistance 4 preferably employs the NTC resistance with certain Negative temperature effect, temperature its resistance value the highest of this NTC resistance is the least, when using NTC resistance, restriction to loop current when can efficiently accomplish hot plug card module 5, to prevent voltage of VBUS from having Voltage Drop situation largely, meets when normally working simultaneously, the voltage difference at current-limiting resistance 4 two ends is less, and does not affect card module 5 normal power supply of rear class.
In the present embodiment; also comprise MCU and for producing the locked circuit of protection 9 of locked removing pulse signal; this locked removing pulse signal can be after VBUS_EXT power supply be by locked protection; for removing the state of locked protection circuit; to ensure in the case of not extracting power line and turning back on, user can be allowed normally to use monitor and card module 5.
Embodiment 3:
This example also provides for a kind of plug-in type monitor, includes the hot Atach & Detach power supply protection circuit as described in embodiment 1 or embodiment 2, and the card module slot 3 of described hot Atach & Detach power supply protection circuit is connected with the card module 5 of described plug-in type monitor.
The detailed description of the invention of the above is better embodiment of the present utility model; not limit with this and of the present utility model be embodied as scope; scope of the present utility model includes being not limited to this detailed description of the invention, and the equivalence change that all shapes according to this utility model, structure are made is all in protection domain of the present utility model.
Claims (10)
1. a hot Atach & Detach power supply protection circuit; it is characterized in that; including: power conversion module, switch module, card module slot and current-limiting resistance; described switch module is connected with the outfan of described power conversion module; described switch module is connected to described card module slot by described current-limiting resistance, and described card module slot is connected with the card module of external equipment.
Hot Atach & Detach power supply protection circuit the most according to claim 1; it is characterized in that; also include tension measuring circuit and for controlling the locked circuit of protection of described switch module according to voltage measurements; described tension measuring circuit is connected in the two ends of described current-limiting resistance in parallel, and the locked circuit of described protection is connected with described tension measuring circuit.
Hot Atach & Detach power supply protection circuit the most according to claim 2, it is characterised in that also include voltage comparator circuit, described tension measuring circuit is connected to the locked circuit of described protection by voltage comparator circuit.
Hot Atach & Detach power supply protection circuit the most according to claim 3, it is characterised in that also include that ON-OFF control circuit, the locked circuit of described protection are connected to described switch module by ON-OFF control circuit.
Hot Atach & Detach power supply protection circuit the most according to claim 3, it is characterised in that also include that predeterminated voltage module, described predeterminated voltage module are connected with described voltage comparator circuit；Or, described predeterminated voltage module is built in described voltage comparator circuit.
6. according to the hot Atach & Detach power supply protection circuit described in claim 2 to 5 any one, it is characterised in that also include that MCU, described MCU circuit locked with described protection is connected.
Hot Atach & Detach power supply protection circuit the most according to claim 6, it is characterised in that be additionally included in a testing circuit, described testing circuit in place is connected to described MCU.
Hot Atach & Detach power supply protection circuit the most according to claim 7, it is characterised in that described testing circuit in place is connected with the contact that contacts of described card module slot.
9. according to the hot Atach & Detach power supply protection circuit described in claim 1 to 5 any one, it is characterised in that described switch module includes that metal-oxide-semiconductor, described current-limiting resistance are NTC resistance.
10. a plug-in type monitor, it is characterised in that include the hot Atach & Detach power supply protection circuit as described in claim 1 to 9 any one, the card module slot of described hot Atach & Detach power supply protection circuit is connected with the card module of described plug-in type monitor.
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| CN201620259998.1U CN205791499U (en) | 2016-03-30 | 2016-03-30 | A kind of hot Atach & Detach power supply protection circuit and plug-in type monitor thereof |
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| CN201620259998.1U CN205791499U (en) | 2016-03-30 | 2016-03-30 | A kind of hot Atach & Detach power supply protection circuit and plug-in type monitor thereof |
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| CN205791499U true CN205791499U (en) | 2016-12-07 |
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Cited By (6)
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| CN107317315A (en) * | 2017-08-18 | 2017-11-03 | 安图实验仪器(郑州)有限公司 | Surge current suppression circuit module |
| WO2019019505A1 (en) * | 2017-07-27 | 2019-01-31 | 郑州云海信息技术有限公司 | Circuit structure for suppressing surge current |
| CN109327020A (en) * | 2018-10-08 | 2019-02-12 | 郑州云海信息技术有限公司 | A kind of hot-plug protecting equipment and power supplying system of server of server power supply |
| CN111106597A (en) * | 2018-10-25 | 2020-05-05 | 恩智浦有限公司 | Power switch overcurrent protection system |
| CN113363955A (en) * | 2021-05-30 | 2021-09-07 | 西北工业大学 | Hot plug interface circuit of CAN bus measurement and control module |
| CN113572126A (en) * | 2021-09-23 | 2021-10-29 | 苏州浪潮智能科技有限公司 | Overcurrent protection method and device and power supply circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019019505A1 (en) * | 2017-07-27 | 2019-01-31 | 郑州云海信息技术有限公司 | Circuit structure for suppressing surge current |
| US11349302B2 (en) | 2017-07-27 | 2022-05-31 | Zhengzhou Yunhai Information Technology Co., Ltd. | Circuit structure for suppressing surge current |
| CN107317315A (en) * | 2017-08-18 | 2017-11-03 | 安图实验仪器(郑州)有限公司 | Surge current suppression circuit module |
| CN109327020A (en) * | 2018-10-08 | 2019-02-12 | 郑州云海信息技术有限公司 | A kind of hot-plug protecting equipment and power supplying system of server of server power supply |
| CN111106597A (en) * | 2018-10-25 | 2020-05-05 | 恩智浦有限公司 | Power switch overcurrent protection system |
| CN113363955A (en) * | 2021-05-30 | 2021-09-07 | 西北工业大学 | Hot plug interface circuit of CAN bus measurement and control module |
| CN113572126A (en) * | 2021-09-23 | 2021-10-29 | 苏州浪潮智能科技有限公司 | Overcurrent protection method and device and power supply circuit |
| CN113572126B (en) * | 2021-09-23 | 2021-12-17 | 苏州浪潮智能科技有限公司 | Overcurrent protection method and device and power supply circuit |
| US11979018B2 (en) | 2021-09-23 | 2024-05-07 | Inspur Suzhou Intelligent Technology Co., Ltd. | Method for over current protection device, and power supply circuit |
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