CN106787658A - A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide - Google Patents
A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide Download PDFInfo
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- CN106787658A CN106787658A CN201611263687.3A CN201611263687A CN106787658A CN 106787658 A CN106787658 A CN 106787658A CN 201611263687 A CN201611263687 A CN 201611263687A CN 106787658 A CN106787658 A CN 106787658A
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- surge current
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Classifications
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- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide, including four pins outside surge current control device, 1 pin, 2 pin, 3 pin, 4 pin, wherein 1 pin, 2 pin can not polarity connect on input AC L and AC the N lines of power supply, 3 pin, 4 pin are directly sealed in the loop of front end electric capacity CD of AC/DC inputs power supply or high input voltage DC/DC power-supply systems.The present invention can effectively suppress surge current to 35 times of running current, in low temperature（‑55℃）Or high temperature（+100℃）Under the conditions of to essentially identical under the inhibitory action and normal temperature condition of surge current, repeatedly power-up start in a short time, the inhibitory action to surge current is equally effective.Own loss is extremely low after startup, such as same wire.Can be widely applied among military or high-grade industrial power.
Description
Technical field
The invention belongs to power-on surge current technical field, and in particular to one kind is applied to high-power AC/DC power supplys or height
Press the power-on surge current suppression circuit of the width temperature work ultra-low loss in the DC/DC power supplys of input.
Background technology
In current electricity input AC/DC power supplys or the DC/DC power-supply systems of high input voltage, because input has high pressure great Rong
The electric capacity of amount, in power supply booting moment due to the mutation of electric capacity both end voltage, the Large Copacity filtering storage capacitor of power input
Charging transient be in short-circuit condition, in the input of power-supply system the surge current, surge current can be caused to reach normal work
Make more than 100 times of electric current, cause EMI, EMC of electronic system to disturb.At present in the countermeasure for the treatment of EMI, EMC, wherein subtracting
The method of low surge current is exactly to seal in thermistor RT1 (such as Fig. 1) in the front end of electric capacity to solve the problem.Due to thermistor
Negative temperature characteristic, its impedance is larger under normal temperature state, and the maximum of electric current can be suppressed when current flowing resistance, electricity
Stream will be generated heat while flowing through resistance, and its resistance value can be reduced rapidly, to ensure low-loss when steady operation.Mainly have
Following three points：Firstth, thermistor is not good to the inhibition of electric current, and its effect is thing of the electric current by heating after thermistor
Reason characteristic, the impedance of thermistor is larger when cold conditions, and under conditions of identical voltage, the maximum by electric current is not
Become, but after thermistor heating, after its impedance value is greatly lowered, the inhibition to maximum current will be deteriorated,
Or no longer play a role.It is that can not meet to be with conventional design especially among some important electricity systems
Safety and EMI, EMC requirement of system.Secondth, when cold conditions, impedance value hinders thermistor under increasing to normal temperature state
More than ten times of anti-value, in power-supply system cold start moment, the loss of thermistor itself can reach ten times of normal power consumption
More than, thermistor can be caused to burn, or power-supply system cannot start in a short time, be surveyed by us, in -55 DEG C of bars
Under part, the startup time of power supply reaches more than 30 seconds, and such startup time delay can not put up with the power supply system.The
3rd, during thermistor seals in current loop, only in febrile state, its impedance can be greatly lowered, but maintain self-heating to be bound to
The loss of power-supply system itself can be increased, the temperature of thermistor is too high also significantly to reduce the life-span of itself, be influence
The big factors of power-supply system reliability.
The content of the invention
The technical problems to be solved by the invention are directed to shortcoming of the prior art and provide a kind of temperature wide and work ultralow
The power-on surge current suppression circuit of loss, the present invention is solved and suppresses the system of surge current in low temperature bar using thermistor
Difficulty in starting under part, under the high temperature conditions to the problem of Inrush current restraining function difference.
Adopted the following technical scheme that to solve technical problem of the invention：
A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide, including four outside surge current control device
Pin, 1 pin, 2 pin, 3 pin, 4 pin, wherein 1 pin, 2 pin can not polarity connect on input AC-L and the AC-N line of power supply, 3
Pin, 4 pin are directly sealed in the loop of front end electric capacity CD of AC/DC inputs power supply or high input voltage DC/DC power-supply systems.
Wherein surge current control device includes diode D1, diode D2, AC/DC input power supply or high input voltage
The input voltage of DC/DC power-supply systems from 1 pin, the input of 2 pin by diode D1, diode D2 rectifications, after rectification by resistance R1,
The resistance decompression network that R2 is constituted is depressured, and voltage-stabiliser tube DZ carries out accurate amplitude limit to voltage amplitude after step-down, forms one surely
Fixed reference voltage；Resistance R3 and C constitute an integrating circuit, the rise time of the turning-on voltage of controlling switch T, by resistance
R3 regulation Inrush current restraining devices suppress the time interval of overshoot current；The opening process of resistance R4 controlling switch pipes T, passes through
The maximum of the surge current of R4 regulation switch transistor Ts；Diode D3 makes switch transistor T rapidly turn off, and fills Inrush current restraining
The function of reliable and stable performance Inrush current restraining under the frequently condition of work of power-up open and close machine is put, finally by 3 pin, 4
Pin is directly sealed in the loop of front end electric capacity CD of the DC/DC power-supply systems of AC/DC inputs power supply or high input voltage.
The annexation of wherein surge current control device is：The DC/DC power supplys of AC/DC inputs power supply or high input voltage
The input voltage of system connects diode D1, the positive pole of diode D2, diode D1, the negative pole of diode D2 by 1 pin, 2 pin
After being connected together and one end of resistance R1 connects, the other end and resistance R2 of resistance R1, resistance R3, the negative pole of voltage-stabiliser tube DZ,
The negative pole of diode D3 links together, and is connect together with 4P after the other end of resistance R2, the positive pole of voltage-stabiliser tube DZ are connected together
Be grounded again, after the other end of resistance R3 and the positive pole of diode D3 are connected together and resistance R4 one end and the positive pole of electric capacity C
It is connected together, the negative pole of electric capacity C is grounded after meeting 4P, and the G poles of another termination switch transistor T of resistance R4, the D poles of switch transistor T meet 3P,
The S poles of switching tube are grounded after meeting 4P.
The switch transistor T is managed for N-channel MOS FET.
It is of the invention by current source delay circuit, the switch mosfet pipe T service times inside precise control, by opening
The electric current of pass is linearly increasing.Switch transistor T open time delay can freely set, and maximum suppression electric current can also accurately set.
The advantage of this surge current control device mainly has following three points：First, Inrush current restraining work(performance is good；Second, in electricity
Under conditions of origin system frequent starting, or in low temperature（-55℃）, high temperature（+85℃）Under the conditions of, the suppression to power-on surge current
Function is essentially identical with the function of normal temperature state；3rd, in normal operation, internal switch mosfet pipe T is complete
Open, due to the R of switch mosfet pipe TDS（on）Value very little, typically in the rank of tens milliohms, loss in circuit is very low
's.
The present invention can effectively suppress surge current to 3-5 times of running current, in low temperature（-55℃）Or high temperature
（+100℃）Under the conditions of to essentially identical under the inhibitory action and normal temperature condition of surge current, repeatedly power-up is opened in a short time
Machine, the inhibitory action to surge current is equally effective.Own loss is extremely low after startup, such as same wire.Can answer extensively
Among military or high-grade industrial power.
Brief description of the drawings
Fig. 1 suppresses in-rush current limiting circuit schematic diagram for the utilization thermistor of prior art；
Fig. 2 is the use principle block diagram of apparatus of the present invention；
Fig. 3 is the inside schematic diagram of apparatus of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide, including four outside surge current control device
Pin, 1 pin, 2 pin, 3 pin, 4 pin, wherein 1 pin, 2 pin can not polarity connect on input AC-L and the AC-N line of power supply, 3
Pin, 4 pin are directly sealed in the loop of front end electric capacity CD of the DC/DC power-supply systems of AC/DC inputs power supply or high input voltage, such as
Shown in Fig. 2.
The annexation of surge current control device is：The DC/DC power-supply systems of AC/DC inputs power supply or high input voltage
Input voltage connect diode D1, the positive pole of diode D2 by 1 pin, 2 pin, diode D1, the negative pole of diode D2 are connected on
Together after and resistance R1 one end connect, the other end and resistance R2 of resistance R1, resistance R3, the negative pole of voltage-stabiliser tube DZ, two poles
The negative pole of pipe D3 links together, and connects and connects again together with 4P after the other end of resistance R2, the positive pole of voltage-stabiliser tube DZ are connected together
After ground, the other end of resistance R3 and the positive pole of diode D3 are connected together and one end of resistance R4 and the positive pole of electric capacity C are connected on
Together, the negative pole of electric capacity C is grounded after meeting 4P, the G poles of another termination switch transistor T of resistance R4, and the D poles of switch transistor T meet 3P, open
The S poles for closing pipe T connect ground connection after 4P, and switch transistor T is that N-channel MOS FET is managed, as shown in Figure 3.
During present invention work, the input voltage of the DC/DC power-supply systems of AC/DC inputs power supply or high input voltage from 1 pin,
By diode D1, diode D2 rectifications, the resistance decompression network being made up of resistance R1, R2 after rectification is depressured the input of 2 pin,
Voltage-stabiliser tube DZ carries out accurate amplitude limit to voltage amplitude after step-down, forms a reference voltage for stabilization；Resistance R3 and C constitute one
Integrating circuit, the rise time of the turning-on voltage of controlling switch T, adjusts Inrush current restraining device and suppresses overshoot electricity by resistance R3
The time interval of stream；The opening process of resistance R4 controlling switch pipes T, the maximum of the surge current of switch transistor T is adjusted by R4
Value；Diode D3 makes switch transistor T rapidly turn off, and makes surge current control device in the condition of work of frequently power-up open and close machine
Under reliable and stable performance Inrush current restraining function, directly seal in AC/DC inputs power supply or height finally by 3 pin, 4 pin
In pressing the loop of front end electric capacity CD of the DC/DC power-supply systems of input.
The invention device is that the electrical characteristic for making full use of n-channel MOSFET switch pipe T is designed, due to semiconductor devices
The electrical characteristic of switch transistor T is all very stable within the temperature range of -65 DEG C -160 DEG C, goes for -55 DEG C -100 DEG C
The AC/DC power supplys of wide temperature range or the DC/DC power-supply systems of high input voltage in；The transient power consumption that switch transistor T can bear
Several hectowatts can be reached, reliability in circuit is very high；Can be with the time of flexible modulation Inrush current restraining and maximum surge
Current value, using quite varied；Switch transistor T is voltage-type switching device, and line loss is low, fast response time, relative to utilization
For thermistor, though cost increased a bit, the reliability lifting brought to power-supply system is immeasurable；Thoroughly
The system for utilizing thermistor to suppress surge current difficulty in starting under cryogenic is solved, under the high temperature conditions to surge electricity
Stream suppresses the problem of function difference.
Claims (4)
1. a kind of power-on surge current suppression circuit of temperature work ultra-low loss wide, it is characterised in that：Including Inrush current restraining
Four pins outside device, 1 pin, 2 pin, 3 pin, 4 pin, wherein 1 pin, 2 pin can not polarity the input AC- for connecing power supply
On L and AC-N lines, 3 pin, 4 pin directly seal in the front end electricity of AC/DC power inputs or high pressure DC/DC mains input power source systems
In appearance CD loops.
2. a kind of power-on surge current suppression circuit of temperature work ultra-low loss wide according to claim 1, its feature exists
In：The surge current control device includes the DC/DC of diode D1, diode D2, AC/DC input power supply or high input voltage
, from 1 pin, the input of 2 pin by diode D1, diode D2 rectifications, the voltage after rectification is by resistance for the input voltage of power-supply system
The resistance decompression network that R1, R2 are constituted is depressured, and voltage-stabiliser tube DZ carries out accurate amplitude limit to voltage amplitude after step-down, forms one
The reference voltage of stabilization；Resistance R3 and C constitute an integrating circuit, the rise time of the turning-on voltage of controlling switch T, by electricity
Resistance R3 regulation Inrush current restraining devices suppress the time interval of overshoot current；The opening process of resistance R4 controlling switch pipes T, leads to
Cross the maximum of the surge current of R4 regulation switch transistor Ts；Diode D3 makes switch transistor T rapidly turn off, and makes Inrush current restraining
The function of the reliable and stable performance Inrush current restraining under the frequently condition of work of power-up open and close machine of device, finally by 3
Pin, 4 pin are directly sealed in the loop of front end electric capacity CD of the DC/DC power-supply systems of AC/DC inputs power supply or high input voltage.
3. a kind of power-on surge current suppression circuit of temperature work ultra-low loss wide according to claim 1 and 2, its feature
It is：The annexation of surge current control device is：The DC/DC power-supply systems of AC/DC inputs power supply or high input voltage
Input voltage connects diode D1, the positive pole of diode D2 by 1 pin, 2 pin, and diode D1, the negative pole of diode D2 are connected on one
One end after rising with resistance R1 connects, the other end and resistance R2 of resistance R1, resistance R3, the negative pole of voltage-stabiliser tube DZ, diode
The negative pole of D3 links together, and connects and is grounded again together with 4P after the other end of resistance R2, the positive pole of voltage-stabiliser tube DZ are connected together,
After the other end of resistance R3 and the positive pole of diode D3 are connected together and one end of resistance R4 and the positive pole of electric capacity C are connected on one
Rise, the negative pole of electric capacity C is grounded after meeting 4P, the G poles of another termination switch transistor T of resistance R4, and the D poles of switch transistor T meet 3P, switching tube
The S poles of T are grounded after meeting 4P.
4. a kind of power-on surge current suppression circuit of temperature work ultra-low loss wide according to claim 3, its feature exists
In：The switch transistor T is managed for N-channel MOS FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263687.3A CN106787658A (en) | 2016-12-30 | 2016-12-30 | A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263687.3A CN106787658A (en) | 2016-12-30 | 2016-12-30 | A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide |
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| Publication Number | Publication Date |
|---|---|
| CN106787658A true CN106787658A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263687.3A Pending CN106787658A (en) | 2016-12-30 | 2016-12-30 | A kind of power-on surge current suppression circuit of temperature work ultra-low loss wide |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100182726A1 (en) * | 2009-01-16 | 2010-07-22 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Inrush current limitation circuit |
| CN203761040U (en) * | 2013-12-31 | 2014-08-06 | 洛阳隆盛科技有限责任公司 | Surge current inhibition circuit with control function |
| CN204068682U (en) * | 2014-08-23 | 2014-12-31 | 成都四威航空电源有限公司 | A kind of high-power low-loss surge restraint circuit |
| CN105305800A (en) * | 2015-11-18 | 2016-02-03 | 明纬(广州)电子有限公司 | Surge current suppression circuit |
-
2016
- 2016-12-30 CN CN201611263687.3A patent/CN106787658A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100182726A1 (en) * | 2009-01-16 | 2010-07-22 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Inrush current limitation circuit |
| CN203761040U (en) * | 2013-12-31 | 2014-08-06 | 洛阳隆盛科技有限责任公司 | Surge current inhibition circuit with control function |
| CN204068682U (en) * | 2014-08-23 | 2014-12-31 | 成都四威航空电源有限公司 | A kind of high-power low-loss surge restraint circuit |
| CN105305800A (en) * | 2015-11-18 | 2016-02-03 | 明纬(广州)电子有限公司 | Surge current suppression circuit |
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Application publication date: 20170531 |