CN101640412B - Soft-starting circuit of power supply - Google Patents
Soft-starting circuit of power supply Download PDFInfo
- Publication number
- CN101640412B CN101640412B CN2009101672683A CN200910167268A CN101640412B CN 101640412 B CN101640412 B CN 101640412B CN 2009101672683 A CN2009101672683 A CN 2009101672683A CN 200910167268 A CN200910167268 A CN 200910167268A CN 101640412 B CN101640412 B CN 101640412B
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- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 16
- 210000004027 cell Anatomy 0.000 claims 2
- 210000000352 storage cell Anatomy 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101000854827 Homo sapiens Vertnin Proteins 0.000 description 1
- 102100020798 Vertnin Human genes 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention relates to a soft-starting circuit of power supply, belonging to the technical field of power control. The soft-starting circuit is arranged between the power supply and a main body unit. One input end of the main body unit is connected with an output end of the power supply. The soft-starting circuit comprises a switch unit, a current limit unit, an energy storage unit and a control unit, wherein the switch unit is connected with the current limit unit in parallel, the front end of a parallel branch thereof is connected to another output end of the power supply, and the rear end of the parallel branch is connected to one end of the energy storage unit and another output end of the main body unit; the other end of the energy storage unit is connected to one output end of the power supply; a first end of the control unit is connected to a control end of the switch unit, and a second end of the control unit is connected to a control end of the main body unit; and the control unit controls the disconnection and the connection of the switch unit so as to control the power supply to supply power to the main body unit. The technical scheme can reduce the energy consumption and protect the power supply.
Description
Technical Field
The invention relates to the technical field of power supply control, in particular to a slow starting circuit of a power supply.
Background
In the board card type equipment, a power supply uniformly supplies power to all board cards through a back board, all the board cards meet the requirement of self working stability, and an energy storage unit is arranged at a power supply input port in each board card. When each board card is powered on the plugboard, the energy storage unit is connected to a power supply, so that instant power-on impact current is brought, instant drop of the voltage of the power supply is often caused, and the working stability of other board cards of the system is influenced. When the whole equipment is powered on, the voltage of a power supply can drop instantly to influence the working stability of other equipment.
In order to maintain the stability of system operation, a slow start circuit is usually provided at an on-board power input port to slow down the impact of power supply on a board card, and the following two commonly used schemes are adopted at present:
first, a thermistor or the like is connected in series to increase the input current slowly, but this scheme has a very small effect of suppressing the current increase and is poor in applicability.
Secondly, a Metal Oxide Semiconductor (MOS) tube is connected in series, the voltage between the MOS tubes GS is controlled to rise through a slow charging circuit, and the MOS tubes GS are turned on slowly.
Disclosure of Invention
The invention aims to solve the problems that impact on a power supply is caused by overlarge input current, large current is needed when the power supply works normally, and energy consumption is high in the prior art.
In order to solve the above problems, the present invention provides a slow start circuit of a power supply, which has the following specific technical scheme:
a slow start circuit of a power supply, disposed between the power supply and a main unit, an input terminal of the main unit being connected to an output terminal of the power supply, the slow start circuit comprising:
the device comprises a switch unit, a current limiting unit, an energy storage unit and a control unit;
the switch unit is connected with the current limiting unit in parallel, the front end of a parallel branch of the switch unit is connected to the other output end of the power supply, and the rear end of the parallel branch of the switch unit is connected to one end of the energy storage unit and the other input end of the main body unit;
the other end of the energy storage unit is connected to the output end of the power supply;
the first end of the control unit is connected to the control end of the switch unit, and the second end of the control unit is connected to the control end of the main body unit;
the control unit controls the switch-off and switch-on of the switch unit so as to control the power supply to supply power to the main body unit.
According to the technical scheme provided by the invention, when the power supply is initially supplied, the maximum current allowed to flow is limited by the current limiting unit, so that the impact current influence on the electrification of the board card is avoided; meanwhile, the switch unit is used for allowing large current to pass, so that current required by normal work is guaranteed, the current limiting unit only works when the power supply is initially electrified, loss caused by current limiting is negligible, static loss of the switch unit is very small, and loss of the whole slow starting circuit is very small. In addition, the capacity of the energy storage unit is not limited, so that the board card can provide the energy storage unit with any capacity according to actual needs.
Drawings
Fig. 1 is a schematic block diagram of a slow start circuit of a power supply according to an embodiment of the present invention;
fig. 2 is a structural diagram of a slow start circuit of a power supply according to an embodiment of the present invention.
Detailed Description
The core idea of the invention is that: when the power supply source initially supplies power, the maximum current allowed to flow is limited by the current limiting unit, so that the impact current influence on the board card is avoided; meanwhile, the switch unit is used for allowing large current to pass, so that current required by normal work is guaranteed, the current limiting unit only works when the power supply is initially electrified, loss caused by current limiting is negligible, static loss of the switch unit is very small, and loss of the whole slow starting circuit is very small. In addition, the capacity of the energy storage unit is not limited, so that the board card can provide the energy storage unit with any capacity according to actual needs.
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
The embodiment of the present invention provides a slow start circuit of a power supply, as shown in fig. 1, disposed between the power supply and a main unit, an input terminal 1 of the main unit is connected to an output terminal 2 of the power supply, the slow start circuit includes: the device comprises a switch unit, a current limiting unit, an energy storage unit and a control unit; wherein,
the switch unit is connected with the current limiting unit in parallel, the front end 1 of a parallel branch is connected to the output end 1 of a power supply, and the rear end 2 of the parallel branch is connected to one end 1 of the energy storage unit and the input end 2 of the main body unit;
the other end 2 of the energy storage unit is connected to the output end 2 of the power supply;
a control unit, the first end 1 of which is connected to the control end 3 of the switch unit, and the second end 2 of which is connected to the control end 3 of the main body unit;
the control unit controls the switch-off and the switch-on of the switch unit so as to control the power supply to supply power to the main body unit.
Furthermore, the slow starting circuit also comprises an effusion unit which is connected with the energy storage unit in parallel. Wherein the effusion cell may be a resistor device or a diode.
Further, the control unit controls turning off and on of the switching unit, including:
when the power supply supplies power, the control unit controls the switch unit to be switched off, the main body unit is in a closed state, and the energy storage unit is charged through the current limiting unit; after the energy storage unit finishes charging, the control unit controls the switch unit to be conducted and controls the main body unit to be started.
Further, the switching unit may be a relay or an opto-coupler switch.
Further, the current limiting unit may be another resistance device.
Further, the energy storage unit may be a capacitor.
Further, the control unit may be an electromechanical management unit or a time-delay control circuit.
The above embodiments are described in detail by a specific example, but the example is not to be construed as limiting the scope of the present invention. Specifically, as shown in fig. 2, the structure of the slow start circuit of the power supply provided in this example is provided between the power supply and the on-board main module power, which is the main unit, and the input terminal 1 of the on-board main module power is connected to the output terminal-48 VTN of the power supply. This slow start circuit includes: the switch unit is a switch S1, the current limiting unit is a resistor R1, the energy storage unit is a capacitor C1 and the control unit; wherein,
the switch S1 is connected with the resistor R1 in parallel, the front end 1 of the parallel branch is connected to the output end-48V of the power supply, and the rear end 2 of the parallel branch is connected to one end 1 of the capacitor C1 and the input end 2 of the in-board main module power supply;
the other end 2 of the capacitor C1 is connected to the output end-48 VRTN of the power supply;
a control unit, the first end 1 of which is connected to the control end 3 of the switch S1, and the second end 2 of which is connected to the control end 3 of the on-board main module power supply;
the control unit controls the switch S1 element to be switched off and on so as to control the power supply to supply power to the main module power supply in the board.
The operation principle of the circuit shown in fig. 2 is described in detail below, specifically, when the power supply initially supplies power, the switch S1 is turned off, and the capacitor C1 is charged via the resistor R1; at this time, the resistor R1 limits the maximum current allowed to be input, and avoids the impact current of the power-on of the board. After the capacitor C1 is charged, the control unit controls the switch S1 to be turned on, and then controls the on-board main module power supply to be turned on, so as to supply power to the on-board main module power supply through the switch S1. Since the switch S1 allows a large current to pass, the current required for normal operation is ensured. Because the resistor R1 only works in the period of power-on, the loss caused by current limiting is negligible; the static loss of the switch S1 is very small, so the loss of the whole slow start circuit is very small. In addition, in this example, the capacitance of the capacitor C1 is not limited, so that the board card can provide a capacitor with any capacitance according to actual needs.
The capacitor C1 is used for storing energy, and a proper capacitance value, such as 220uF, can be selected according to the power supply of the main module in the board and the system requirement, and the withstand voltage value can be selected to be 100V in combination with the condition that the input power supply is-48V in the present example. In combination with the above requirements, an aluminum electrolytic capacitor with suitable parameters is generally selected.
The resistor R1 is used for limiting current, and the resistance value thereof determines the maximum impact current Imax when the power supply supplies power. The resistor R1 is selected mainly in consideration of heat loss limitation. In this example, the power resistor is preferably selected to withstand a larger heat dissipation, such as 680 Ω -10W ceramic resistor, with a maximum inrush current of about 70mA and a maximum resistive heat dissipation of about 3.5W. Assuming that the number of boards in the whole system is 50, the maximum power-on impact current of the whole system is only 3.5A. Taking the example that the resistor R1 is 680 ohms, the capacitor C1 is 220uF, and the charging time constant of the capacitor C1 is 150ms, and taking the time constant of 4 times, it also takes 600ms to achieve 98% charging.
The switch S1 can be selected as a relay, such as a 48VDC electromagnetic relay, and the rated working current and other parameters can be derated and selected according to the actual needs of the board card.
The control unit may have a variety of implementations, typically in conjunction with system solution selection. If the board card itself has an electromechanical management unit, the electromechanical management unit can control the switch S1 and the on/off of the power supply of the main module in the board. If the board card does not have an electromechanical management unit, a delay circuit, such as a resistor-capacitor circuit, can be designed to complete the above control. In order to meet the requirement of power isolation, the control unit can realize the control of the switch S1 and the power supply of the main module in the board through the optical coupling device.
Further, a resistor with a suitable resistance value may be connected in parallel with the capacitor C1, so that the capacitor C1 can discharge the charge quickly when the card is unplugged, and the resistance value depends on the expected discharge time.
In the embodiment of the invention, when the power supply supplies power initially, the maximum current allowed to flow is limited by the current limiting unit, so that the impact current influence on the board card is avoided; meanwhile, the switch unit is used for allowing large current to pass, so that current required by normal work is guaranteed, the current limiting unit only works when the power supply is initially electrified, loss caused by current limiting is negligible, static loss of the switch unit is very small, and loss of the whole slow starting circuit is very small. In addition, the capacity of the energy storage unit is not limited, so that the board card can provide the energy storage unit with any capacity according to actual needs.
The invention is not limited to the applications listed in the description and the embodiments. Various modifications and alterations of this invention will occur to those skilled in the art to which this invention pertains, and all such modifications and alterations are intended to be within the scope of the appended claims.
Claims (7)
1. A slow starting circuit of a power supply is arranged between the power supply and a main body unit, the output of the slow starting circuit is voltage, the main body unit is an on-board main module power supply, one input end (1) of the main body unit is connected to one output end (2) of the power supply, and the slow starting circuit is characterized by comprising:
the device comprises a switch unit, a current limiting unit, an energy storage unit and a control unit;
the switch unit is connected with the current limiting unit in parallel, the front end (1) of a parallel branch of the switch unit is connected to the other output end (1) of the power supply, and the rear end (2) of the parallel branch of the switch unit is connected to one end (1) of the energy storage unit and the other input end (2) of the main body unit;
the other end (2) of the energy storage unit is connected to the output end (2) of the power supply;
the first end (1) of the control unit is connected to the control end (3) of the switch unit, and the second end (2) of the control unit is connected to the control end (3) of the main body unit;
the control unit controls the switch-off and the switch-on of the switch unit so as to control the power supply to supply power to the main body unit, when the power supply initially supplies power, the control unit controls the switch unit to be switched off, the main body unit is in a closed state, and the energy storage unit is charged through the current limiting unit; after the energy storage unit finishes charging, the control unit controls the switch unit to be switched on and controls the main body unit to be switched on.
2. The slow start circuit of claim 1, further comprising an effusion cell in parallel with the energy storage cell.
3. The slow start circuit as claimed in claim 2, wherein said effusion cell is a resistive device or a diode.
4. A slow start circuit as claimed in any one of claims 1 to 3, wherein said switch unit is a relay or an opto-coupler switch.
5. A slow start circuit as claimed in any one of claims 1 to 3, wherein said current limiting unit is another resistive device.
6. A slow start circuit as claimed in any one of claims 1 to 3, wherein said energy storage unit is a capacitor.
7. A slow start circuit as claimed in any one of claims 1 to 3, wherein said control unit is an electromechanical management unit or a delay control circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101672683A CN101640412B (en) | 2009-09-02 | 2009-09-02 | Soft-starting circuit of power supply |
| PCT/CN2010/074945 WO2011026381A1 (en) | 2009-09-02 | 2010-07-02 | Soft-start circuit for power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101672683A CN101640412B (en) | 2009-09-02 | 2009-09-02 | Soft-starting circuit of power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101640412A CN101640412A (en) | 2010-02-03 |
| CN101640412B true CN101640412B (en) | 2012-07-18 |
Family
ID=41615264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101672683A Expired - Fee Related CN101640412B (en) | 2009-09-02 | 2009-09-02 | Soft-starting circuit of power supply |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101640412B (en) |
| WO (1) | WO2011026381A1 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640412B (en) * | 2009-09-02 | 2012-07-18 | 中兴通讯股份有限公司 | Soft-starting circuit of power supply |
| CN102195271B (en) * | 2010-03-10 | 2016-01-20 | 深圳市朗科科技股份有限公司 | For reducing the device of starting current of electronic equipment |
| CN101964711B (en) * | 2010-09-20 | 2013-01-16 | 华为终端有限公司 | Power supply circuit and power supply chip of data card, and data card |
| CN102789307A (en) * | 2012-06-29 | 2012-11-21 | 浪潮电子信息产业股份有限公司 | Energy-saving design method and device for restraining instant impact current of high-power fan |
| CN103825263B (en) * | 2012-11-16 | 2018-10-12 | 海洋王（东莞）照明科技有限公司 | Source of stable pressure starting protection circuit and power panel test circuit |
| CN103036416B (en) * | 2012-12-10 | 2015-07-08 | 四川爱特尔科技有限公司 | Circuit starting device with power protection |
| CN104578742B (en) * | 2013-10-23 | 2019-03-29 | 中兴通讯股份有限公司 | A kind of soft-start circuit |
| CN103928958B (en) * | 2014-04-08 | 2016-02-03 | 深圳桑达国际电源科技有限公司 | A kind of charging and discharging lithium battery management circuit and lithium battery management system |
| DE102015107030A1 (en) * | 2014-05-15 | 2015-11-19 | Control Techniques Ltd. | Energy bypass |
| CN104104268A (en) * | 2014-07-15 | 2014-10-15 | 张书傲 | Collection device applied to mobile power supply charging |
| CN106026056A (en) * | 2016-05-18 | 2016-10-12 | 浙江大华技术股份有限公司 | Anti-impact circuit for power supply equipment, power supply equipment, and Ethernet power supply system |
| CN107817722A (en) * | 2017-10-26 | 2018-03-20 | 北京科技大学 | A kind of ON-OFF control circuit implementation method of belt current buffering |
| CN108599119B (en) * | 2018-04-17 | 2019-09-10 | 深圳市科比特航空科技有限公司 | Unmanned plane switching circuit and unmanned plane |
| CN111384736A (en) * | 2018-12-29 | 2020-07-07 | 中兴通讯股份有限公司 | Charging/discharging device, control method and device, battery device, and storage medium |
| CN109873399B (en) * | 2019-04-15 | 2021-06-11 | 苏州浪潮智能科技有限公司 | Power supply protection circuit and power supply protection device |
| CN110481353B (en) * | 2019-08-13 | 2021-08-10 | 科华恒盛股份有限公司 | Direct-current slow start device and method |
| 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 |
| CN112491257A (en) * | 2020-11-17 | 2021-03-12 | 北京精密机电控制设备研究所 | Integrated DC power supply conditioning device |
| CN113050470A (en) * | 2021-02-08 | 2021-06-29 | 杭州涂鸦信息技术有限公司 | Intelligent switch |
| CN113937743B (en) * | 2021-10-18 | 2024-05-14 | 深圳英恒电子有限公司 | Impact current suppression circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5420780A (en) * | 1993-12-30 | 1995-05-30 | Omega Power Systems | Apparatus for limiting inrush current |
| US5715154A (en) * | 1995-06-08 | 1998-02-03 | Sgs-Thomson Microelectronics S.A. | Circuit and method for controlling an inrush current limiter in a power conversion system that includes power factor correction |
| CN1801564A (en) * | 2005-01-08 | 2006-07-12 | 艾默生网络能源系统有限公司 | Switching power supply with overvoltage protection and overvoltage protection method thereof |
| CN101436822A (en) * | 2007-11-14 | 2009-05-20 | 台达电子工业股份有限公司 | Soft startup protection detection device and method for frequency changer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6744644B2 (en) * | 2001-10-02 | 2004-06-01 | Honeywell International Inc. | Soft-start of DC link capacitors for power electronics and drive systems |
| CN1159824C (en) * | 2002-04-26 | 2004-07-28 | 艾默生网络能源有限公司 | Power supply module for communication |
| CN2579075Y (en) * | 2002-09-30 | 2003-10-08 | 长沙市为尔自动化技术开发有限公司 | IGCT driving power supply |
| CN2657277Y (en) * | 2003-06-24 | 2004-11-17 | 中国科学院电工研究所 | Plasma high frequency power supply for lightning arrester |
| CN101645614B (en) * | 2008-08-05 | 2012-09-19 | 鸿富锦精密工业（深圳）有限公司 | Slow start circuit |
| CN101640412B (en) * | 2009-09-02 | 2012-07-18 | 中兴通讯股份有限公司 | Soft-starting circuit of power supply |
-
2009
- 2009-09-02 CN CN2009101672683A patent/CN101640412B/en not_active Expired - Fee Related
-
2010
- 2010-07-02 WO PCT/CN2010/074945 patent/WO2011026381A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5420780A (en) * | 1993-12-30 | 1995-05-30 | Omega Power Systems | Apparatus for limiting inrush current |
| US5715154A (en) * | 1995-06-08 | 1998-02-03 | Sgs-Thomson Microelectronics S.A. | Circuit and method for controlling an inrush current limiter in a power conversion system that includes power factor correction |
| CN1801564A (en) * | 2005-01-08 | 2006-07-12 | 艾默生网络能源系统有限公司 | Switching power supply with overvoltage protection and overvoltage protection method thereof |
| CN101436822A (en) * | 2007-11-14 | 2009-05-20 | 台达电子工业股份有限公司 | Soft startup protection detection device and method for frequency changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101640412A (en) | 2010-02-03 |
| WO2011026381A1 (en) | 2011-03-10 |
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