CN109449880A - A kind of high-power aerospace modular power source input undervoltage protection circuit - Google Patents
A kind of high-power aerospace modular power source input undervoltage protection circuit Download PDFInfo
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- CN109449880A CN109449880A CN201811259128.4A CN201811259128A CN109449880A CN 109449880 A CN109449880 A CN 109449880A CN 201811259128 A CN201811259128 A CN 201811259128A CN 109449880 A CN109449880 A CN 109449880A
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- voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/243—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for DC systems
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- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of high-power aerospace modular power source input undervoltage protection circuit, it is connected after the divider resistance series connection partial pressure that external input voltage passes through input voltage measurement with the reference voltage terminal of precision voltage source, current-limiting resistance is between external input voltage main track and precision voltage source cathode, precision voltage source cathode is set to after the series connection of first divider resistance, between external input voltage loop line, bypass the collector of triode, emitter is connected with resistance both ends in the divider resistance of input voltage measurement respectively, bypass triode, the collector of control triode connects the midpoint of the first divider resistance, the emitting stage of control triode is connected with the loop line of external input voltage, control the control signal of the collector output under-voltage protecting circuit of triode.
Description
Technical field
The present invention relates to electronic technology field, especially a kind of high-power aerospace modular power source input undervoltage protection circuit.
Background technique
With the rapid development of space technology, the power of spacecraft power supply system is continuously increased, in order to preferably embody
The small advantage of high voltage supply cable waste, eastwardly red -4 platform starts gradually using 100V high voltage bus power supply system, to height
Power-supply system long-life under pressure bus system highly reliable proposes new challenge.According to statistics, satellite power supply in normal work from
The probability so damaged is very little, and damage typically occurs in severe bussed supply environment and load emergency situations.In order to make star
Upper electronic product safe and effective and the long-life can work, and it is vital for protecting the design of circuit.Work as power supply
When module or electronics single machine are in some abnormal bussed supply states, protection circuit can in time be closed power supply buses, to the greatest extent may be used
The loss due to caused by these problems can be reduced.And in satellite power system with battery, solar array, a bus
The protection circuit of the power module and electronics single machine that are connected etc. multiple key positions is even more in the weight concerning satellite transit success or failure
It is weight, to protection circuit own reliability more stringent requirements are proposed.
Power supply and the electronics single machine common method of guarantor under-voltage for bus of input predominantly pass through sampling bus on star
Voltage turns off bussed supply when busbar voltage is lower than setting benchmark, reaches protection using comparator compared with setting benchmark
The purpose of rear class power module and electronics single machine.The existing under-voltage protection method based on comparator needs additional designs auxiliary power supply
Power supply, the usual efficiency of accessory power supply is lower, can bring the power consumption of 1~3W, and reliability is difficult to ensure；It is multiple to will also result in system simultaneously
The increase of polygamy is unfavorable for the miniaturization and lightweight of aerospace electron product.Therefore, break through that structure is simple, reliable high big function
Rate aerospace modular power source input undervoltage protection technique has a very important role in satellite power system.
Summary of the invention
Technical problem solved by the present invention is having overcome the deficiencies of the prior art and provide a kind of high-power aerospace module electricity
Source input undervoltage protection circuit, circuit structure is simple, be not necessarily to external power supply, low in energy consumption, temperature drift is small, interference free performance is excellent, anti-spoke
It is strong according to ability, the service life is long, high reliablity, spacecraft power supply system can be suitable for.
The technical solution of the invention is as follows: a kind of high-power aerospace modular power source input undervoltage protection circuit, including defeated
Enter divider resistance, precision voltage source U1, current-limiting resistance R4, the first divider resistance, the bypass triode V1, control three of voltage detecting
Pole pipe V2, in which:
Benchmark after the divider resistance series connection partial pressure that external input voltage passes through input voltage measurement with precision voltage source U1
Voltage end is connected, and current-limiting resistance R4 is located between external input voltage main track and precision voltage source U1 cathode, the first divider resistance
It is set to after series connection between precision voltage source U1 cathode, external input voltage loop line, bypasses collector, the emitter of triode V1
It is connected respectively with resistance both ends in the divider resistance of input voltage measurement, bypass triode V1, the collector for controlling triode V2
The midpoint of the first divider resistance is connect, the emitting stage of control triode V2 is connected with the loop line of external input voltage, controls triode
The control signal of the collector output under-voltage protecting circuit of V2；
Wherein, precision voltage source U1 includes comparator, and voltage value is greater than comparator reference after external input voltage partial pressure
When voltage, precision voltage source U1 cathode output voltage is less than voltage value after external input voltage partial pressure, when external input voltage point
When voltage value is not more than comparator reference voltage after pressure, precision voltage source U1 cathode output voltage is divided equal to external input voltage
Voltage value afterwards.
The divider resistance of the input voltage measurement includes resistance R1, resistance R2, resistance R3, wherein resistance R1, resistance
R2, resistance R3 series connection.
The control signal of the under-voltage protecting circuit of the collector output of the control triode V2 connects the high-power mould of aerospace
Block power input surge circuit carries out making can control to power MOS pipe, completes being switched on and off for inlet highway voltage.
The current-limiting resistance R4 guarantees accurate electricity between external input voltage main track and the cathode of precision voltage source U1
The minimum working current of comparator is met the requirements in potential source U1.
First divider resistance includes resistance R5, resistance R6, and R5, R6 are located at precision voltage source U1 cathode and outside is defeated
Enter between voltage input loop line, bypasses the midpoint of triode V1, collector connecting resistance R5, R6 for controlling triode V2, R5, R6 make
When under-voltage protection must not occur, V1, V2 shutdown, when under-voltage protection occurs, precision voltage source U1 cathode voltage is an externally input electricity
Pressure, V1, V2 are open-minded.
The bypass triode V1 bypasses R3, provides hysteresis voltage for under-voltage protecting circuit, wherein R3 is adjustable
Hysteresis voltage size
The advantages of the present invention over the prior art are that:
(1) present invention is the input undervoltage protection circuit based on precision voltage source, is realized using its comparator characteristic under-voltage
Protection, under-voltage protection point can flexible settings, it can be ensured that power supply still is able to safe and stable, reliably under high voltage bus system
Work；
(2) a kind of aerospace high power module power input under-voltage protecting circuit of the present invention is powered without external auxiliary, is had
The advantages that structure is simple, and peripheral components are few, when normal work, protection Maximum Power Dissipation is not more than 300mW；
(3) present invention bypasses the settable different hysteresis voltage range of divider resistance using triode, effectively prevents defeated
Interference when entering busbar voltage fluctuation to protection circuit, improves the reliability of protection circuit；
(4) core devices of the precision voltage source TL431 that the present invention uses as under-voltage protection are suitable for aerospace applications, tool
There is the features such as good temp characteristic, high reliablity, within the scope of -35~70 DEG C of aerospace product operating temperature, temperature drift is lower than 2%, protects
Demonstrate,proved protection circuit has control precision well within the scope of total temperature.
Detailed description of the invention
Fig. 1 is aerospace large power supply module input undervoltage protection circuit schematic diagram of the invention, and U1 is accurate electricity in figure
Fiducial chip TL431 is pressed, V1, V2 are triode, and M1 is power MOS pipe, and R1~R6 is resistance；
Fig. 2 is that aerospace large power supply module of the invention inputs surge restraint circuit schematic diagram, and Z1 is voltage-stabiliser tube in figure,
M1 is power MOS pipe, and C1 is capacitor, and R7~R10 is resistance.
Specific embodiment
The busbar voltage covering that high-power aerospace modular power source input undervoltage protection circuit of the invention can be protected is defended
Star 100V high voltage bus range: 80~120V；Without external auxiliary power supply, component number is few, structure is simple, small power consumption (is protected
Protection circuit power consumption is less than 300mW)；Circuit reliability is high, and temperature drift is smaller, suitable for power module on star and electronics single machine for one
Secondary bus carries out under-voltage protection, carries out detailed explanation and illustration to circuit of the present invention with reference to the accompanying drawing.
A kind of high-power aerospace modular power source input undervoltage protection circuit, as shown in Figure 1, it is characterized by comprising be used for
Divider resistance R1~R3 of input voltage measurement, precision voltage source U1, current-limiting resistance R4, divider resistance R5, R6 bypass triode
V1, control triode V2.
It, can be with by adjusting R1~R3 resistance value for the divider resistance R1~R3 and precision voltage source U1 of input voltage measurement
It adjusts under-voltage protection point (under-voltage protection voltage), principle is the base after dividing input voltage with U1 precision voltage source TL431
Quasi- end is connected, using the comparator characteristic of TL431, i.e. when voltage value is higher than reference voltage (2.5V) after R1~R3 partial pressure, and TL431
Cathode voltage is 2V, and when voltage value is lower than reference voltage (2.5V) after partial pressure, TL431 cathode voltage is inlet highway voltage.
The current-limiting resistance R4 is set between input voltage main track and U1 precision voltage source TL431 cathode, is guaranteed
TL431 minimum working current is greater than 1mA.
Described divider resistance R5, the R6, bypass triode V1 and control triode V2.Wherein, R5, R6 are set to the yin of U1
Between pole and input loop line, the collector and emitter of triode V1 is connected with the both ends R3 respectively, the collector of triode V1, V2
It is connected to the midpoint of resistance R5 and R6, the emitting stage of triode V2 is connected with input loop line, and the collector of V2 exports under-voltage protection
The control signal of circuit.When the value of R5 and R6 not occur under-voltage protection, V2 collector voltage be lower than 0.1V, guarantee V1,
V2 reliable turn-off；When under-voltage protection occurs, TL431 cathode voltage is inlet highway voltage, is divided by R5 and R6, so that
V1, V2 are reliably open-minded.Triode V1 bypasses R3, so that under-voltage protection point improves, provides hysteresis voltage for under-voltage protecting circuit,
By adjusting the adjustable hysteresis voltage range of R3.
The control triode V2 collector is connected in aerospace high power module power input surge circuit (see figure
2), realize that the on-off to input surge restraint circuit controls, and achievees the purpose that be switched on and off inlet highway voltage.
The present invention is as shown in Figure 1, input voltage passes through the benchmark after resistance R1~R3 series connection partial pressure with precision voltage source U1
Voltage end is connected, and current-limiting resistance R4 is set between external input voltage main track and U1 precision voltage source TL431 cathode, guarantees
TL431 minimum working current is greater than 1mA.It is set between the cathode of U1 and external input loop line after R5, R6 series connection, triode V1
Collector and emitter be connected respectively with the both ends R3, the collector of triode V1, V2 are connected to the midpoint of resistance R5 and R6, three
The emitting stage of pole pipe V2 is connected with external input loop line, the control signal of the collector output under-voltage protecting circuit of V2.Work as generation
When under-voltage protection, the TL431 cathode voltage of U1 is an externally input busbar voltage, is divided by R5 and R6, so that V1, V2 are reliably opened
It is logical.Triode V1 bypasses R3, so that under-voltage protection point improves, provides hysteresis voltage, triode V2 collection for under-voltage protecting circuit
Electrode is connected in aerospace high power module power input surge circuit (see Fig. 2), is realized and is led to input surge restraint circuit
Disconnected control, achievees the purpose that be switched on and off inlet highway voltage.
The high-end DC current sample circuit working principle of low-power consumption of the invention is as follows:
(1) input voltage is connected after being divided by resistance R1~R3 with the reference voltage terminal of precision voltage source U1, passes through tune
Save the adjustable under-voltage protection point of R1~R3 resistance value, principle be after input voltage is divided with U1 precision voltage source TL431
Reference edge is connected, using the comparator characteristic of TL431, that is, when voltage value is higher than reference voltage (2.5V) after dividing, and TL431 cathode
Voltage is 2V, and when voltage value is lower than reference voltage (2.5V) after partial pressure, TL431 cathode voltage is inlet highway voltage.Triode
The collector of V2 is connected to the midpoint of resistance R5 and R6, the control signal of the collector output under-voltage protecting circuit of V2.R5 and R6
Value when not occur under-voltage protection, V2 collector voltage is lower than 0.1V, guarantees V2 reliable turn-off；When generation under-voltage protection
When, TL431 cathode voltage is inlet highway voltage, is divided by R5 and R6, so that V2 is reliably open-minded.
(2) when under-voltage protection not occurring, V1 collector voltage is lower than 0.1V, guarantees V1 reliable turn-off, at this time under-voltage protection
Point is determined by R1, R2, R3 partial pressure；When under-voltage protection occurs, TL431 cathode voltage is inlet highway voltage, passes through R5 and R6
Partial pressure, so that triode V1 is reliably open-minded, V1 bypasses R3, and the point of under-voltage protection at this time is determined by R1, R2 partial pressure, so that under-voltage guarantor
Shield point improves.Under-voltage protecting circuit produces hysteresis voltage as a result, by adjusting the adjustable hysteresis voltage range of R3.
(3) input surge restraint circuit is widely used in the input terminal of aerospace large power supply, passes through capacitance-resistance R7, R8, R10
Power MOS pipe service time is controlled with the time constant of C1 setting, achievees the purpose that present inrush current amplitude.This is under-voltage
Triode V2 collector in protection circuit is connected in aerospace high power module power input surge circuit, to power MOS pipe
It carries out making can control, achievees the purpose that be switched on and off inlet highway voltage.
By taking 80~120V of input voltage as an example, under-voltage protection point is 70V, and it is 85V that protection, which restores voltage,.Used in circuit
Parameters of operating part are as follows: resistance R1:913, R2:272, R3:681, R4:243, R5:243, R69:102；It is wanted to meet Flouride-resistani acid phesphatase use
It asks, U1 uses the product TL1431 with Flouride-resistani acid phesphatase index；Triode V1, V2:2N2222.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (6)
1. a kind of high-power aerospace modular power source input undervoltage protection circuit, it is characterised in that the partial pressure including input voltage measurement
Resistance, precision voltage source U1, current-limiting resistance R4, the first divider resistance, bypass triode V1, control triode V2, in which:
Reference voltage after the divider resistance series connection partial pressure that external input voltage passes through input voltage measurement with precision voltage source U1
End is connected, and current-limiting resistance R4 is located between external input voltage main track and precision voltage source U1 cathode, the series connection of the first divider resistance
After be set between precision voltage source U1 cathode, external input voltage loop line, bypass triode V1 collector, emitter difference
It is connected with resistance both ends in the divider resistance of input voltage measurement, bypass triode V1, the collector for controlling triode V2 connect the
The emitting stage at the midpoint of one divider resistance, control triode V2 is connected with the loop line of external input voltage, control triode V2's
The control signal of collector output under-voltage protecting circuit；
Wherein, precision voltage source U1 includes comparator, and voltage value is greater than comparator reference voltage after external input voltage partial pressure
When, precision voltage source U1 cathode output voltage is less than voltage value after external input voltage partial pressure, after external input voltage partial pressure
When voltage value is not more than comparator reference voltage, precision voltage source U1 cathode output voltage is equal to electricity after external input voltage partial pressure
Pressure value.
2. a kind of high-power aerospace modular power source input undervoltage protection circuit according to claim 1, it is characterised in that: institute
The divider resistance for the input voltage measurement stated includes resistance R1, resistance R2, resistance R3, wherein resistance R1, resistance R2, resistance R3
Series connection.
3. a kind of high-power aerospace modular power source input undervoltage protection circuit according to claim 1 or 2, feature exist
In: the control signal of the under-voltage protecting circuit of the collector output of the control triode V2 connects aerospace high power module power supply
Surge circuit is inputted, power MOS pipe is carried out making can control, completes being switched on and off for inlet highway voltage.
4. a kind of high-power aerospace modular power source input undervoltage protection circuit according to claim 1 or 2, feature exist
In: the current-limiting resistance R4 guarantees precision voltage source between external input voltage main track and the cathode of precision voltage source U1
The minimum working current of comparator is met the requirements in U1.
5. a kind of high-power aerospace modular power source input undervoltage protection circuit according to claim 1 or 2, feature exist
In: first divider resistance includes resistance R5, resistance R6, and R5, R6 are located at precision voltage source U1 cathode and external input is electric
Between pressure input loop line, the midpoint of triode V1, collector connecting resistance R5, R6 for controlling triode V2 are bypassed, R5, R6 make not
When under-voltage protection occurs, V1, V2 shutdown, when under-voltage protection occurs, precision voltage source U1 cathode voltage is an externally input voltage,
V1, V2 are open-minded.
6. a kind of high-power aerospace modular power source input undervoltage protection circuit according to claim 1 or 2, feature exist
In: the bypass triode V1 bypasses R3, provides hysteresis voltage for under-voltage protecting circuit, wherein the adjustable sluggishness of R3
Voltage swing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259128.4A CN109449880A (en) | 2018-10-26 | 2018-10-26 | A kind of high-power aerospace modular power source input undervoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259128.4A CN109449880A (en) | 2018-10-26 | 2018-10-26 | A kind of high-power aerospace modular power source input undervoltage protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN109449880A true CN109449880A (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811259128.4A Pending CN109449880A (en) | 2018-10-26 | 2018-10-26 | A kind of high-power aerospace modular power source input undervoltage protection circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542818A (en) * | 2019-09-23 | 2021-03-23 | 中车株洲电力机车研究所有限公司 | Input undervoltage protection circuit and power panel comprising same |
| CN113708341A (en) * | 2021-09-04 | 2021-11-26 | 广西普德新星电源科技有限公司 | Undervoltage protection circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204361658U (en) * | 2014-12-30 | 2015-05-27 | 广州视源电子科技股份有限公司 | A kind of under-voltage protecting circuit |
| CN205491293U (en) * | 2016-01-15 | 2016-08-17 | 东莞市好的照明科技有限公司 | Solar energy LED lighting control circuit |
| CN106253210A (en) * | 2016-08-09 | 2016-12-21 | 珠海格力电器股份有限公司 | Under-voltage protecting circuit |
| CN206180652U (en) * | 2016-11-30 | 2017-05-17 | 武汉兴通力电源技术有限公司 | Be used for distribution network automation remote terminal unit battery over discharge protection time delay pass breaking of contact |
-
2018
- 2018-10-26 CN CN201811259128.4A patent/CN109449880A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204361658U (en) * | 2014-12-30 | 2015-05-27 | 广州视源电子科技股份有限公司 | A kind of under-voltage protecting circuit |
| CN205491293U (en) * | 2016-01-15 | 2016-08-17 | 东莞市好的照明科技有限公司 | Solar energy LED lighting control circuit |
| CN106253210A (en) * | 2016-08-09 | 2016-12-21 | 珠海格力电器股份有限公司 | Under-voltage protecting circuit |
| CN206180652U (en) * | 2016-11-30 | 2017-05-17 | 武汉兴通力电源技术有限公司 | Be used for distribution network automation remote terminal unit battery over discharge protection time delay pass breaking of contact |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542818A (en) * | 2019-09-23 | 2021-03-23 | 中车株洲电力机车研究所有限公司 | Input undervoltage protection circuit and power panel comprising same |
| CN113708341A (en) * | 2021-09-04 | 2021-11-26 | 广西普德新星电源科技有限公司 | Undervoltage protection circuit |
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Application publication date: 20190308 |
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