CN102937698B - A kind of DC/DC converter single particle effect detection system and detection method - Google Patents
A kind of DC/DC converter single particle effect detection system and detection method Download PDFInfo
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- CN102937698B CN102937698B CN201210390638.1A CN201210390638A CN102937698B CN 102937698 B CN102937698 B CN 102937698B CN 201210390638 A CN201210390638 A CN 201210390638A CN 102937698 B CN102937698 B CN 102937698B
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Abstract
A kind of DC/DC converter single particle effect detection system and detection method, system comprises output voltage Circuit tuning, input protection circuit, power supply and observation circuit thereof, multi pass acquisition circuit and control and data handling system; During detection, control to send control signal with data handling system to power supply and observation circuit thereof and make power supply and observation circuit thereof provide operating voltage to tested DC/DC device, the input end of input protection circuit to tested DC/DC is protected; The output terminal of tested DC/DC converter is connected with pull-up resistor, the output voltage of output terminal is by being gathered by multi pass acquisition circuit after output voltage Circuit tuning, send into again and control and data handling system, high energy particle irradiation is carried out by the radiation sensitive region of splitting the tested DC/DC converter after emitting, control the voltage signal received with data handling system after contrast pre-irradiation, thus draw the conclusion whether single particle effect occurs.
Description
Technical field
The present invention relates to a kind of DC/DC converter single particle effect detection system and detection method.
Background technology
DC/DC converter is the device that a kind of direct supply by a kind of voltage magnitude converts another kind of voltage magnitude direct supply to.
Equipment numerous in satellite, the supply voltage adopted is omnifarious, needs on the basis of satellite primary power by being converted to.And for satellite, to the requirement importantly high-level efficiency of power supply; Meanwhile, in order to improve the reliability of satellite, to require in satellite that between each parts or assembly, power supply is mutually isolated, reduces interference each other.And the efficiency of general linear power supply is too low, and neither be mutually isolated between constrained input.Therefore, satellite electronic system mostly adopts distributed power supply system, and wherein DC/DC power supply changeover device is that it is main, crucial device, and it provides stable power input for all electronic equipments or system.
Satellite operation is in space radiation environment, and radiation effect can cause the performance degradation of DC/DC converter even to lose efficacy, and the DC/DC converter performance that single-particle radiation effect causes is degenerated particularly evident.Before satellite uses DC/DC converter, must carry out single particle effect detection to DC/DC converter, by test, assessment single particle effect susceptibility, selects device and system to carry out radiation tolerance design for model and provides foundation.
The single particle effect test of domestic satellite components and parts mainly concentrates on the fixed function device of each quasi-tradition, as microprocessor, storer, DLC (digital logic circuit), ad/da converter etc., and DC/DC converter belongs to hybrid circuit, 26S Proteasome Structure and Function principle there is the difference of essence with the device studied in the past, general by power MOS pipe, pulse width modulator, feedback signal isolator, operational amplifier, comparer, isolating transformer, the devices such as magnetic tickler and capacitance-resistance sense thereof and element composition, wherein metal-oxide-semiconductor, pulse width modulator, the active devices such as feedback signal isolator are more responsive to single particle effect, this device-structure dimensions is larger simultaneously, volume is generally greater than 4cm (length) * 3cm (wide) * 2cm (height).Therefore, device and single irradiation zone that Cleaning Principle can not be regarded as single built-in function carry out single-particle simulation test, but need to design brand-new detection system for its design feature and carry out single-particle analog detection, have not yet to see about domestic unit to carry out the report of single particle effect detection experiment to DC/DC converter, also there is no detection method and the evaluation of programme of specification.
The report being engaged in the research of this direction abroad mainly contains the IR company of the U.S., INTERPOINT company, the SAAB testing laboratory of VPT company and European ESA, the IR company of the U.S., INTERPOINT company and VPT company are the Production design sides of DC/DC converter, core technology for such device has to be grasped completely, have employed custom-designed check-out console, upper computer detection software, the detection to tested DC/DC inner member can be completed more all sidedly, but the DC/DC converter inside element testing technology of test application is also unexposed, a large amount of technology is domestic cannot be obtained, and its detection method is that the single element of inside is carried out irradiation detection, its detection scheme is not for whole sensitizing range or the different sensitizing range of device inside, Europe SAAB testing laboratory cooperates with U.S. DC/DC converter Production design company, and have employed custom-designed check-out console, upper computer detection software carries out single particle effect detection, its detection technique details is unexposed, domesticly cannot obtain.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provides a kind of DC/DC converter single particle effect detection system and detection method.
Technical solution of the present invention is:
A kind of DC/DC converter single particle effect detection system, comprising: output voltage Circuit tuning, input protection circuit, power supply and observation circuit thereof, multi pass acquisition circuit and control and data handling system;
Control to transmit control signal to power supply and observation circuit thereof with data handling system, power supply and observation circuit thereof is made to export the operating voltage of tested DC/DC converter, by inputing to tested DC/DC converter after input protection circuit, simultaneously, power supply and observation circuit thereof be the output voltage of this circuit of Real-Time Monitoring self and output current also, and is given by the numeric feedback of output voltage and output current and control and data handling system;
Tested DC/DC converter accepts is started working after the operating voltage inputted, and its output terminal output voltage signal is to output voltage Circuit tuning, and this voltage signal is adjusted in the receivable voltage range of described multi pass acquisition circuit by output voltage Circuit tuning;
Multi pass acquisition circuit gathers the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to and controls and data handling system.
While the output voltage signal of tested DC/DC converter is adjusted in the receivable voltage range of described multi pass acquisition circuit by output voltage Circuit tuning, also need to make the output voltage of the voltage signal after adjustment and DC/DC converter linear.
Based on the DC/DC converter single particle effect detection method that DC/DC converter single particle effect detection system according to claim 1 realizes, step is as follows:
(1) cap process is opened to tested DC/DC converter, and determine radiation sensitive region;
(2) selective radiation source;
(3) control to transmit control signal to power supply and observation circuit thereof with data handling system, make described DC/DC converter single particle effect detection system start working, multi pass acquisition circuit carries out Real-time Collection to the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to controlling and data handling system;
(4) high energy particle using radiation source to produce irradiates the radiation sensitive region of having opened in the tested DC/DC converter of cap;
(5) digital voltage signal that the multi pass acquisition circuit received after controlling, with data handling system, tested DC/DC converter is subject to predose exports compares, if the difference change of twice digital voltage signal does not exceed predetermined threshold value, then show, in this radiation sensitive region, single particle effect does not occur; If the difference of twice digital voltage signal exceeds predetermined threshold value, then show, in this radiation sensitive region, single particle effect occurs,
(6) step (3) ~ (5) are performed successively to the residue radiation sensitive region of tested DC/DC converter, determine whether it single particle effect occurs, until all radiation sensitive region detection terminate.
When described predetermined threshold value is unirradiated digital voltage signal size 10%.
Described radiation source is cyclotron or swindletron, and its high energy particle range in silicon produced is greater than 30 μm, and LET value is greater than 35MeV.cm
2/ mg.
The present invention's advantage is compared with prior art:
(1) the present invention can carry out data acquisition to the voltage signal that tested DC/DC converter three tunnel exports simultaneously, achieves and detects the single particle effect of three kinds of tested DC/DC converters of difference such as single channel, two-way, three tunnels, highly versatile.
(2) the present invention can by controlling to control with the input voltage of data handling system to tested DC/DC converter and the input current value of energy Real-Time Monitoring measured device; The disabler whether having occurred the tested DC/DC converter that single-particle causes in simulation test procedure can be judged in real time, easily.
(3) the present invention adopts real time data processing technology, real time data processing is carried out to multi pass acquisition data, can store the unusual waveforms of tested DC/DC converter simultaneously and the number of times of single-event transients occurs, the mechanism produced for the single particle effect susceptibility and single particle effect of analyzing tested DC/DC converter has heavy meaningful.
(4) the present invention can carry out detection experiment for the whole device of tested DC/DC converter sensitizing range different from inside, its DC/DC converter single-particle simulation test in space flight model, effectively can verify the single-particle susceptibility of DC/DC converter, for engineer applied single-particle know the real situation test and in-orbit failure analysis there is practical significance.
Accompanying drawing explanation
Fig. 1 is the theory diagram of DC/DC converter single particle effect detection system of the present invention;
Fig. 2 is DC/DC converter single particle effect detection method process flow diagram of the present invention;
Fig. 3 is the workflow diagram of power supply and observation circuit thereof;
Fig. 4 is DC/DC converter single particle effect detection method process flow diagram;
Embodiment
The invention provides a kind of DC/DC converter single particle effect detection system, as shown in Figure 1, this system comprises: output voltage Circuit tuning, input protection circuit, power supply and observation circuit thereof, multi pass acquisition circuit and control and data handling system;
Control to transmit control signal to power supply and observation circuit thereof with data handling system, power supply and observation circuit thereof is made to export the operating voltage of tested DC/DC converter, by inputing to tested DC/DC converter after input protection circuit, simultaneously, power supply and observation circuit thereof be the output voltage of this circuit of Real-Time Monitoring self and output current also, and is given by the numeric feedback of output voltage and output current and control and data handling system;
Tested DC/DC converter accepts is started working after the operating voltage inputted, its output terminal output voltage signal is to output voltage Circuit tuning, this voltage signal is adjusted in the receivable voltage range of described multi pass acquisition circuit by output voltage Circuit tuning, meanwhile, also need to make the output voltage of the voltage signal after adjustment and DC/DC converter linear.
Multi pass acquisition circuit gathers the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to and controls and data handling system.
The course of work of output voltage Circuit tuning is:
When the output voltage of tested DC/DC converter is within-10V ~+10V scope, the voltage signal that output voltage Circuit tuning exports to multi-channel data acquisition circuit is equal with by the output voltage of DC/DC converter; When the output voltage of tested DC/DC converter is not within-10V ~+10V scope, output voltage Circuit tuning adjusts this voltage signal, makes it export within-10V ~+10V scope, and linear with the output voltage of tested DC/DC converter.
The input end of input protection circuit to tested DC/DC is protected, and prevents power-up procedures peripheral from disturbing the surge current caused to damage tested DC/DC converter.The course of work of input protection circuit is:
When the voltage that power supply and observation circuit thereof provide to tested DC/DC converter does not have high voltage interference, namely the input voltage of tested DC/DC converter is within normal working range, and the voltage that input protection circuit exports to tested DC/DC converter provides voltage equal with power supply and observation circuit thereof; When there is high voltage interference in the voltage that power supply and observation circuit thereof provide to tested DC/DC converter; the inside Sensitive Apparatus conducting of input protection circuit; short circuit is carried out to input voltage; make the input voltage be applied on tested DC/DC converter be zero, guarantee that tested DC/DC converter does not damage because of the impact of interference.
The course of work of power supply and observation circuit thereof is:
After power supply and observation circuit thereof receive the control signal controlled with data handling system, export the voltage of regulation on request, and by output voltage values and output current value Real-time Feedback to control and data handling system, when output current exceedes the value of regulation, power supply and observation circuit thereof stop the output of voltage.
The course of work of multi pass acquisition circuit is:
Multi pass acquisition circuit carries out A/D conversion to this signal after receiving the voltage signal of output regulation circuit output, and the digital signal of conversion is uploaded to control and data handling system.Multi pass acquisition circuit can gather the signal of three tunnel inputs simultaneously.
Control with the course of work of data handling system is:
When controlling to work with data handling system, control signal is sent to power supply and observation circuit thereof, which includes the supply voltage value set and export to power supply and observation circuit thereof, power supply and observation circuit thereof is made to export suitable voltage, meanwhile, sending control signal makes the electric current of power supply and observation circuit output thereof, voltage Real-time Feedback to controlling and data handling system;
It should be noted that, in the middle of actual test, need offered load circuit on tested DC/DC converter.In the embodiment of the present invention, load circuit selects 0.73 ohm of 50W, 1.25 ohm of 50W, 5 ohm of 100W, 2.5 ohm of 100W, passive resistance composition that 36 ohm of 100W and 150 ohm 100W these 6 kinds are different, form different ohmic loads, be convenient to tested DC/DC converter and detect single particle effect under different ohmic load.Output voltage Circuit tuning comprises the 2DW type stabilivolt of switching diode IN4148 and divider resistance 10 kilohms of 1W two, 10V.Input protection circuit comprises SY5648 transient voltage suppressor diode, current-limiting resistance 1 ohm of 10W and filter coil ZCLD-25B-II.The G201F-600 type power module that power supply and observation circuit thereof adopt Chroma company to produce and gpib interface thereof.Multi pass acquisition circuit comprises three 16 bit A/D converter MAX1166 and interface control chips, and interface control chip is the LPC2134 that Philips company produces.Controlling with data handling system is the 610L type Industrial Control Computer that ADLINK company produces.
As shown in Figure 2, for controlling the workflow diagram with data handling system in DC/DC converter single particle effect detection system of the present invention.First detect after application program at startup DC/DC, according to detected DC/DC is the feature that single channel, two-way or three tunnels export, and correspondingly arranges that " channel selecting " is module one, module two or module three; Then " power supply and observation circuit thereof " used is " GPIB port " (namely arranging " power-supply device number ") with the interface modes of " controlling and data handling system "; The input voltage of DC/DC is set, and makes its come into force (namely " voltage set value " is set) by clicking " voltage setting "; Select to need the channel plot of display (namely arranging " waveform operation "); The nominal output voltage (namely arranging " standard voltage value ") of practical devices is set; Device single particle effect threshold voltage (SET) is set.Afterwards, send steering order " startup " collection to multi pass acquisition circuit and make it start to gather the numerical value of output voltage, if there is SET to occur, voltage jump number of times will add 1.
As shown in Figure 3, be the workflow diagram of DC/DC converter single particle effect detection system power supply of the present invention and observation circuit thereof.After the power switch of power supply and observation circuit thereof is opened, standby after power initialization, if receive the enabled instruction of " power switch " of " controlling and data handling system ", voltage under power supply output init state is to DC/DC converter, if receive the instruction of " power supply is arranged " of " controlling and data handling system ", power supply will according to voltage setting value output voltage, and show real-time output voltage values and current value, if receive the halt instruction of " power switch " of " controlling and data handling system ", power supply will stop output voltage to DC/DC converter.
As shown in Figure 4, the present invention is based on the DC/DC converter single particle effect detection method that DC/DC converter single particle effect detection system realizes, it is characterized in that step is as follows:
(1) cap process is opened to tested DC/DC converter, and determine radiation sensitive region;
In the present embodiment, device is the DC/DC supply convertor DVFL2828S that VPT company produces.Before test, cap is opened to sample, open cap process not damage device inner structure.Determine that irradiation zone is Two Areas: one is the region I at pulse width modulator chip place; Another is the region II at power MOS pipe chip place.
(2) selective radiation source; In the present invention, radiation source is cyclotron or swindletron, and its high energy particle range in silicon produced is greater than 30 μm, and LET value is greater than 35MeV.cm
2/ mg
In the embodiment of the present invention, radiation source selects modern physics research institute of Lanzhou Chinese Academy of Sciences cyclotron, and particle is Kr ion.Test is carried out in atmospheric environment.The high energy particle that cyclotron produces, by the Ni window of 25 microns, enters in air, exposure experiment sample.The LET value of test particle and range are in table 1.
Effective LET value of table 1 test particle
(3) control to transmit control signal to power supply and observation circuit thereof with data handling system, make described DC/DC converter single particle effect detection system start working, multi pass acquisition circuit carries out Real-time Collection to the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to controlling and data handling system;
(4) high energy particle using radiation source to produce irradiates the radiation sensitive region of having opened in the tested DC/DC converter of cap;
(5) digital voltage signal that the multi pass acquisition circuit received after controlling, with data handling system, tested DC/DC converter is subject to predose exports compares, if the difference change of twice digital voltage signal does not exceed predetermined threshold value, then show, in this radiation sensitive region, single particle effect does not occur; If the difference of twice digital voltage signal exceeds predetermined threshold value, then show in this radiation sensitive region occur single particle effect, when described predetermined threshold value is unirradiated digital voltage signal size 10%.
In the embodiment of the present invention, when abnormal (i.e. SET) error number of output voltage transient state reaches 500, or the constant exception of output voltage (departing from normal output voltage 0.5V) reaches the 10s time (i.e. disabler), or when input current data exceed 20% of normal value, or particle flow number reaches 10
6individual/cm
2time, test stops.
(6) step (3) ~ (5) are performed successively to the residue radiation sensitive region of tested DC/DC converter, determine whether it single particle effect occurs, until all radiation sensitive region detection terminate.
By above step, complete the irradiation to DC/DC transducer area II.Test findings is as shown in table 2.
Table 2 single particle effect test experience result
The content be not described in detail in instructions of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (2)
1. a DC/DC converter single particle effect detection system, is characterized in that comprising: output voltage Circuit tuning, input protection circuit, power supply and observation circuit thereof, multi pass acquisition circuit and control and data handling system;
Control to transmit control signal to power supply and observation circuit thereof with data handling system, power supply and observation circuit thereof is made to export the operating voltage of tested DC/DC converter, by inputing to tested DC/DC converter after input protection circuit, simultaneously, power supply and observation circuit thereof be the output voltage of this circuit of Real-Time Monitoring self and output current also, and is given by the numeric feedback of output voltage and output current and control and data handling system;
Tested DC/DC converter accepts is started working after the operating voltage inputted, and its output terminal output voltage signal is to output voltage Circuit tuning, and this voltage signal is adjusted in the receivable voltage range of described multi pass acquisition circuit by output voltage Circuit tuning;
Multi pass acquisition circuit gathers the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to and controls and data handling system;
The course of work of output voltage Circuit tuning is:
When the output voltage of tested DC/DC converter is within-10V ~+10V scope, the voltage signal that output voltage Circuit tuning exports to multi-channel data acquisition circuit is equal with the output voltage of tested DC/DC converter; When the output voltage of tested DC/DC converter is not within-10V ~+10V scope, output voltage Circuit tuning adjusts this voltage signal, makes it export within-10V ~+10V scope, and linear with the output voltage of tested DC/DC converter.
2., based on the DC/DC converter single particle effect detection method that DC/DC converter single particle effect detection system according to claim 1 realizes, it is characterized in that step is as follows:
(1) cap process is opened to tested DC/DC converter, and determine radiation sensitive region;
(2) selective radiation source;
(3) control to transmit control signal to power supply and observation circuit thereof with data handling system, make described DC/DC converter single particle effect detection system start working, multi pass acquisition circuit carries out Real-time Collection to the output voltage of tested DC/DC converter through adjustment and sends into after converting digital signal to controlling and data handling system;
(4) high energy particle using radiation source to produce irradiates the radiation sensitive region of having opened in the tested DC/DC converter of cap;
Described radiation source is cyclotron or swindletron, and its high energy particle range in silicon produced is greater than 30 μm, and LET value is greater than 35MeV.cm
2/ mg;
(5) digital voltage signal that the multi pass acquisition circuit received after controlling, with data handling system, tested DC/DC converter is subject to predose exports compares, if the difference change of twice digital voltage signal does not exceed predetermined threshold value, then show, in this radiation sensitive region, single particle effect does not occur; If the difference of twice digital voltage signal exceeds predetermined threshold value, then show, in this radiation sensitive region, single particle effect occurs;
When described predetermined threshold value is unirradiated digital voltage signal size 10%;
(6) step (3) ~ (5) are performed successively to the residue radiation sensitive region of tested DC/DC converter, determine whether it single particle effect occurs, until all radiation sensitive region detection terminate.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336250B (en) * | 2013-07-15 | 2016-08-10 | 中国空间技术研究院 | DC/DC supply convertor single particle effect detecting system based on voltage adaptive technology |
| CN104345284B (en) * | 2013-08-09 | 2017-03-29 | 工业和信息化部电子工业标准化研究院 | A kind of radiation effect TT＆C system of DC DC power modules |
| CN105759198B (en) * | 2016-04-11 | 2018-06-29 | 西北核技术研究所 | A kind of single event effect of pulse width modulator (PWM) time-sensitive characteristic analysis method |
| CN105897267B (en) * | 2016-04-18 | 2019-05-07 | 西北核技术研究所 | A kind of analog-digital converter single particle effect test method and system |
| CN106526500A (en) * | 2016-11-22 | 2017-03-22 | 上海卫星工程研究所 | Device used for testing DC-DC power supply module single particle effect |
| CN109581205A (en) * | 2018-11-16 | 2019-04-05 | 北京时代民芯科技有限公司 | A kind of high-speed digital-analog conversion circuit single-ion transient state effect appraisal procedure and system |
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