CN103633633A - Restraining method of startup input inrush current of power supply - Google Patents
Restraining method of startup input inrush current of power supply Download PDFInfo
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- CN103633633A CN103633633A CN201310696666.0A CN201310696666A CN103633633A CN 103633633 A CN103633633 A CN 103633633A CN 201310696666 A CN201310696666 A CN 201310696666A CN 103633633 A CN103633633 A CN 103633633A
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Abstract
The invention discloses a restraining method of startup input inrush current of a power supply. A high voltage-resistant large-power filed effect tube of an ultralow on-state resistor and a high-power pure resistor are in parallel connected as an input inrush current restraining module; a VIN input end of the input inrush current restraining module is connected with the power supply; an input capacitance charging control interface CL of the input inrush current restraining module is respectively connected with one end of each of a capacitor C1 and a capacitor C2; an enabling control output end EN of the input inrush current restraining module is connected with a rear-end voltage stabilizer; and a grounding end GND of the input inrush current restraining module is grounded by a guide wire. According to the invention, the high voltage-resistant large-power filed effect tube of the ultralow on-state resistor and the high-power pure resistor are in parallel connected as the input inrush current restraining module which is simple in circuit structure and reliable in operation; the restraining effect for startup input inrush current of the power supply device is very obvious, and power loss to the power supply in a using process is very small.
Description
Technical field
The present invention relates to a kind of power supply start inrush current inhibition method.
Background technology
All there is more, larger input capacitance in device power supply (DPS) inside, the moment of device power supply (DPS) start will produce the surge current of larger input current-power-supply device.This surge current may surpass the electric current fan-out capability of power supply unit and the output voltage of power supply unit is reduced rapidly; the serious power supply unit that will make produces output overcurrent, short-circuit protection; even damage power supply unit; and device power supply (DPS) cannot normally be started, other equipment that also make to be connected on identical power supply unit cannot work.
The power of device power supply (DPS) is larger, the effect of the inrush current phenomenon of this device power supply (DPS) just more obvious, endanger also larger.
Existing power-supply device, the input of most of power supplys does not all configure input surge suppressing device, or, even if the input of some power supply has been equipped with input surge restraint circuit or device, it is only also at the input of power supply some thermistors of connecting, when power supply is started shooting, the resistance of the temperature lower (under ambient temperature situations) of the series thermal-sensitive resistance in the power supply of " cold conditions " is larger, now device power supply (DPS) powers on, the inrush current of power supply maintains in several seconds in the scope of power-supply device regulation and can " surge current that suppress power supply start ", when the thermistor temp of connecting is elevated to a certain degree, the thermistor resistance of series connection is less, its equivalent low-resistance value is connected in series in power-supply device, after guaranteeing that power initiation completes, device power supply (DPS) can work.The measure that this power supply inrush current based on series thermal-sensitive resistance suppresses still will continue consumption and make the temperature of thermistor be maintained to higher temperature for electric energy consumption after power supply has been started shooting; In addition, adopt this series thermal-sensitive resistance to suppress the equipment of inrush current, if closing within electric latter several seconds, equipment opens rapidly again electricity, or this equipment is worked under higher ambient temperature, this inrush current braking measure cannot reach inefficacy the object that device power supply (DPS) inrush current suppresses.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of withstand voltage high-power FET of height of ultralow conducting resistance that adopts as inrush current, to suppress module with high power pure resistance is in parallel, it is simple in structure that inrush current suppresses modular circuit, reliable power supply start inrush current inhibition method.
The object of the invention is to be achieved through the following technical solutions: a kind of power supply start inrush current inhibition method, it adopts the withstand voltage high-power FET of height of ultralow conducting resistance as inrush current, to suppress module with high power pure resistance is in parallel, the VIN input that inrush current suppresses module is connected with power supply, the input capacitance charging control interface CL of inrush current inhibition module connects respectively one end of capacitor C 1 and C2, ENYu rear end, the control output end pressurizer that enables that inrush current suppresses module is connected, inrush current suppresses the earth terminal GND of module by wire ground connection.
Described inrush current suppresses the input capacitance charging control interface CL of module also by current-limiting resistance R ground connection.
Described capacitor C 1 and the other end of C2 are connected with power supply respectively.
Described rear end pressurizer is also connected with power supply.
The invention has the beneficial effects as follows:
1, adopt the withstand voltage high-power FET of height of ultralow conducting resistance as inrush current, to suppress module with high power pure resistance is in parallel, it is simple in structure, reliable that inrush current suppresses modular circuit;
2, very obvious to the inrush current inhibitory action of power-supply device start, device power supply (DPS) booting moment can be to problems such as power supply unit produce overcurrent or causes that output voltage falls, power loss to power supply in use procedure is very little, all has stable performance in low temperature, normal temperature and high temperature environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, further illustrate technical scheme of the present invention, but the content that the present invention protects is not limited to the following stated.
As shown in Figure 1, a kind of power supply start inrush current inhibition method, it adopts the withstand voltage high-power FET of height of ultralow conducting resistance as inrush current, to suppress module with high power pure resistance is in parallel, the VIN input that inrush current suppresses module is connected with power supply, the input capacitance charging control interface CL of inrush current inhibition module connects respectively one end of capacitor C 1 and C2, ENYu rear end, the control output end pressurizer that enables that inrush current suppresses module is connected, and inrush current suppresses the earth terminal GND of module by wire ground connection.
Described inrush current suppresses the input capacitance charging control interface CL of module also by current-limiting resistance R ground connection.
Described capacitor C 1 and the other end of C2 are connected with power supply respectively.
Described rear end pressurizer is also connected with power supply.
VIN input connects power supply, and several volts of voltage ranges, to hundreds of volt, can regulate according to applied environment; The voltage range 0.0v of input capacitance charging control interface CL is to hundreds of volt; The withstand voltage scope that enables control output EN interface signal is hundreds of volt.
The electrical characteristics of power input start Surge suppression module: inrush current suppresses several volts of input voltage ranges that module allows to hundreds of volt.
The course of work of the present invention comprises following two stages:
1, powered on moment, if equipment is cold powering on, the voltage of capacitor C 1, C2 is 0 volt, charging voltage is less than the voltage detecting thresholding of setting, high-power FET is closed, by high-power pure resistance, the large bulk capacitance of power input is carried out to the slow charging of little electric current completely, avoid power-supply device powered on moment to produce excessive input transient current-surge current to power supply unit; Between slow charge period, the control output end EN that enables that inrush current suppresses module exports high level, and rear end pressurizer is not worked, and is the low power consumpting state of standby; The input current of whole power-supply device is very little, regulates current-limiting resistance R, even can make its input current be less than the electric current of power supply normal operation;
2, in the ac power supply device power supply (DPS) of 50 hertz, approximately 10～30 milliseconds of the duration of the slow charging of this power input high power capacity, after powering on, after 10～30mS, power supply electrifying finishes, the charging voltage of capacitor C 1, C2 surpasses default threshold voltage, electric capacity is slow charged after; High-power FET is opened completely, capacitor C 1, C2 access the input of power supply completely, high-power pure resistance is by short circuit, inrush current suppresses module provides the control that enables of " output open circuit, Low level effective " to export, enable control output end EN output low level, enable rear end pressurizer work, for load provides high-power output, current-limiting resistance R electric consumption power no longer now.
The above is only the preferred embodiment of the present invention, be to be understood that the present invention is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from the spirit and scope of the present invention, all should be in the protection range of claims of the present invention.
Claims (4)
1. power supply start inrush current inhibition method, it is characterized in that: it adopts the withstand voltage high-power FET of height of ultralow conducting resistance as inrush current, to suppress module with high power pure resistance is in parallel, the VIN input that inrush current suppresses module is connected with power supply, the input capacitance charging control interface CL of inrush current inhibition module connects respectively one end of capacitor C 1 and C2, ENYu rear end, the control output end pressurizer that enables that inrush current suppresses module is connected, and inrush current suppresses the earth terminal GND of module by wire ground connection.
2. a kind of power supply start inrush current inhibition method according to claim 1, is characterized in that: described inrush current suppresses the input capacitance charging control interface CL of module also by current-limiting resistance R ground connection.
3. a kind of power supply start inrush current inhibition method according to claim 1, is characterized in that: described capacitor C 1 and the other end of C2 are connected with power supply respectively.
4. a kind of power supply start inrush current inhibition method according to claim 1, is characterized in that: described rear end pressurizer is also connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696666.0A CN103633633B (en) | 2013-12-18 | 2013-12-18 | A kind of power supply startup input inrush current suppressing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310696666.0A CN103633633B (en) | 2013-12-18 | 2013-12-18 | A kind of power supply startup input inrush current suppressing method |
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| CN103633633A true CN103633633A (en) | 2014-03-12 |
| CN103633633B CN103633633B (en) | 2017-04-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474530A (en) * | 2019-08-05 | 2019-11-19 | 苏州浪潮智能科技有限公司 | A kind of capacitor charging control circuit |
| CN111211547A (en) * | 2020-01-21 | 2020-05-29 | 青岛海信移动通信技术股份有限公司 | Terminal |
| CN111669040A (en) * | 2020-06-12 | 2020-09-15 | 深圳市奥闻科技有限公司 | Circuit and method for inhibiting starting-up instant current of wireless communication terminal |
| CN112928933A (en) * | 2021-01-15 | 2021-06-08 | 北京军陶科技有限公司 | Power supply with surge current suppression and enable control |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008017636A (en) * | 2006-07-06 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Protective device |
| CN102082430A (en) * | 2011-01-27 | 2011-06-01 | 广州金升阳科技有限公司 | Surge suppression circuit |
| CN202026505U (en) * | 2011-03-23 | 2011-11-02 | 方友维 | Light emitting diode (LED) constant current source |
| CN202103464U (en) * | 2011-05-05 | 2012-01-04 | 无锡三石电子有限公司 | Constant-voltage constant-current charging circuit having surge current suppressing function |
| CN102723703A (en) * | 2011-03-29 | 2012-10-10 | 海洋王照明科技股份有限公司 | Surge current suppression circuit and lighting fixture |
-
2013
- 2013-12-18 CN CN201310696666.0A patent/CN103633633B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008017636A (en) * | 2006-07-06 | 2008-01-24 | Matsushita Electric Ind Co Ltd | Protective device |
| CN102082430A (en) * | 2011-01-27 | 2011-06-01 | 广州金升阳科技有限公司 | Surge suppression circuit |
| CN202026505U (en) * | 2011-03-23 | 2011-11-02 | 方友维 | Light emitting diode (LED) constant current source |
| CN102723703A (en) * | 2011-03-29 | 2012-10-10 | 海洋王照明科技股份有限公司 | Surge current suppression circuit and lighting fixture |
| CN202103464U (en) * | 2011-05-05 | 2012-01-04 | 无锡三石电子有限公司 | Constant-voltage constant-current charging circuit having surge current suppressing function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474530A (en) * | 2019-08-05 | 2019-11-19 | 苏州浪潮智能科技有限公司 | A kind of capacitor charging control circuit |
| CN110474530B (en) * | 2019-08-05 | 2021-10-01 | 苏州浪潮智能科技有限公司 | Capacitor charging control circuit |
| CN111211547A (en) * | 2020-01-21 | 2020-05-29 | 青岛海信移动通信技术股份有限公司 | Terminal |
| CN111211547B (en) * | 2020-01-21 | 2021-11-09 | 青岛海信移动通信技术股份有限公司 | Terminal |
| CN111669040A (en) * | 2020-06-12 | 2020-09-15 | 深圳市奥闻科技有限公司 | Circuit and method for inhibiting starting-up instant current of wireless communication terminal |
| CN112928933A (en) * | 2021-01-15 | 2021-06-08 | 北京军陶科技有限公司 | Power supply with surge current suppression and enable control |
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| Publication number | Publication date |
|---|---|
| CN103633633B (en) | 2017-04-05 |
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Effective date of registration: 20210930 Address after: Floor 12 and 13, building 3, 333 Yunhua Road, high tech Zone, Chengdu, Sichuan 610000 Patentee after: CHENGDU 30JAVEE MICROELECTRONICS Co.,Ltd. Address before: Building 2, 333 Yunhua Road, high tech Zone, Chengdu, Sichuan 610000 Patentee before: SICHUAN WEISHITONG INFORMATION SECURITY PLATFORM TECHNOLOGY Co.,Ltd. |