CN114172358A - Satellite-borne secondary power supply single-particle transient suppression circuit - Google Patents
Satellite-borne secondary power supply single-particle transient suppression circuit Download PDFInfo
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- CN114172358A CN114172358A CN202111351698.8A CN202111351698A CN114172358A CN 114172358 A CN114172358 A CN 114172358A CN 202111351698 A CN202111351698 A CN 202111351698A CN 114172358 A CN114172358 A CN 114172358A
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- 230000001052 transient effect Effects 0.000 title claims abstract description 57
- 230000001629 suppression Effects 0.000 title claims abstract description 52
- 239000002245 particle Substances 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000010586 diagram Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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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
- H02M1/36—Means for starting or stopping converters
Abstract
The invention relates to a satellite-borne secondary power supply single-particle transient suppression circuit in the technical field of satellite-borne power supplies, which comprises: a power conversion unit (103); the output end of the pulse width modulation unit (102) is connected with the power conversion unit (103); the single-event transient suppression unit (101), the single-event transient suppression unit (101) is connected with the slow start end of the pulse width modulation unit (102). The invention can effectively solve the problem of transient interruption or abnormity of load power supply of the satellite-borne secondary power supply due to the single event effect.
Description
Technical Field
The invention relates to the technical field of satellite-borne power supplies, in particular to a satellite-borne secondary power supply single-particle transient suppression circuit.
Background
An aerospace-level pulse width modulator is widely used as a secondary power supply pulse width modulator in a secondary power supply of a spacecraft, and the device is a core device for working of the secondary power supply and mainly has core functions of generating a driving signal for power conversion, stably controlling output voltage, slowly starting the power supply and the like. In a common circuit of the pulse width modulator, a slow start end of the pulse width modulator is connected with a capacitor, so that the pulse expansion speed in the starting process of a secondary power supply is limited, and overcurrent protection of the pulse width modulator caused by overlarge starting current is avoided. However, when a single-event transient effect occurs, the capacitor at the slow start end is discharged and then recharged according to the internal circuit logic of the pulse width modulator. During the period, the pulse width modulator does not output a driving pulse signal, so that the output voltage of the secondary power supply is rapidly reduced, the work of the power supply load is interrupted or abnormal, and the reliability of the satellite-borne power supply system is seriously influenced.
Chinese patent CN107241014A discloses a single event transient effect resistant circuit for SCR pulse width modulators. The circuit includes: a P-type triode Q1, the emitter of which is connected with the COM end of UC1846/7, the collector of which is connected with the common ground, and the base of which is connected with the soft start capacitor C1; RC buffer coupled between reference voltage of UC1846/7 and common ground. The soft start circuit is coupled in parallel with the soft start capacitor for discharging the soft start capacitor when overcurrent or overvoltage is detected, so that the power supply is powered off and restarted to protect the power supply and the load. The technology mainly aims at a pulse width modulator which adopts a Silicon Controlled Rectifier (SCR) structure to carry out overcurrent protection, and when the pulse width modulator encounters a Single Event Upset (SEU) event, the soft start capacitor C1 is not connected with the SCR, so that the discharge can not be carried out through the SCR.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the satellite-borne secondary power supply single-particle transient suppression circuit which can effectively suppress the rapid output voltage drop caused by the single-particle effect of the pulse width modulator of the satellite-borne secondary power supply and solve the problem of load power supply interruption or abnormity caused by the rapid output voltage drop.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a satellite-borne secondary power supply single-particle transient suppression circuit, which comprises:
a power conversion unit;
the output end of the pulse width modulation unit is connected with the power conversion unit;
and the single-event transient suppression unit is connected with the slow start end of the pulse width modulation unit.
According to one aspect of the invention, the single-event transient suppression unit comprises a resistor and a capacitor which are connected in series,
one end of the resistor is connected with the slow start end of the pulse width modulation unit, and the other end of the resistor is connected with one end of the capacitor;
the other end of the capacitor is grounded.
According to one aspect of the invention, the resistance of the resistor is greater than 20K Ω.
According to one aspect of the invention, the pulse width modulation unit comprises a slow start end, a first constant current source, a second constant current source, a first switch, a second switch, a first comparator, a second comparator and a pulse generator;
one end of the first constant current source is connected to one end of the first switch,
one end of the second constant current source is connected with one end of the second switch, and the other end of the second constant current source and the other end of the first switch are connected to the first input ends and the slow start ends of the first comparator and the second comparator together;
the other end of the second switch is grounded;
the second input end of the first comparator is connected to a threshold voltage power supply, and the second input end of the second comparator is connected to a restart voltage power supply;
the output ends of the first comparator and the second comparator are commonly connected to the input end of the pulse generator.
According to one aspect of the invention, the first constant current source is a 15 μ a constant current source and the second constant current source is a 250 μ a constant current source.
According to one aspect of the invention, the pulse width modulation unit is connected to the power conversion unit by connecting the output of the pulse generator to the input of the power conversion unit.
According to one aspect of the invention, when the pulse width modulation unit works normally, the first switch is closed, the second switch is opened, the pulse generator of the pulse width modulation unit generates a pulse signal, and drives the power conversion unit to enable the secondary power supply to stabilize the output voltage.
According to one aspect of the present invention, when the pulse width modulation unit generates a single event effect, the first switch is turned off, the second switch is turned on, and the capacitor discharges through the 250 μ a constant current source, so that the voltage at the slow start end rapidly drops to the restart voltage, where the discharge formula is:
Vss2(t)＝Vc(t0)-Rss*250μA
where t0 denotes the time when the capacitor starts to discharge, Vc denotes the capacitor voltage, t denotes the discharge time, and Vss2 denotes the slow start voltage.
According to an aspect of the present invention, when the voltage of the slow start terminal rapidly drops to the restart voltage, the first switch is closed, the second switch is opened, the capacitor is charged by the 15 μ a constant current source, so that the voltage of the slow start terminal rapidly rises to the threshold voltage, and the formula of the charging is:
Vss1(t)＝Vc(t2)+Rss*15μA
wherein t2 represents the time when the capacitor starts to charge, t represents the charging time, and Vss1 represents the slow-start voltage.
According to an aspect of the present invention, the pulse width modulation unit is a pulse width modulator UC1825 AL.
Has the advantages that:
according to the scheme of the invention, the single-particle transient suppression unit circuit is connected to the pulse width modulation unit circuit, and the passive resistance element is connected in series with the capacitor at the slow start end, so that the problem of transient interruption or abnormity of load power supply of the satellite-borne secondary power supply due to the single-particle effect can be effectively solved. And by combining with the constant current source structure of the pulse width modulation unit circuit, the rapid output voltage drop of the single event effect of the pulse width modulation unit circuit of the satellite-borne secondary power supply can be effectively inhibited, and the power supply stability and reliability of the satellite-borne secondary power supply are greatly enhanced. The satellite-borne secondary power supply single-particle transient suppression circuit is simple in circuit structure and low in cost, and can still reliably supply power to satellite-borne electronic equipment stably under the environment of space single-particle influence.
Drawings
FIG. 1 is a schematic diagram showing a unit composition of a satellite-borne secondary power supply single-event transient suppression circuit according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a satellite-borne secondary power supply single-event transient suppression circuit according to an embodiment of the invention;
fig. 3 is a schematic diagram showing an output voltage waveform of a satellite-borne secondary power supply according to an embodiment of the invention when no single-event transient suppression unit circuit is provided;
FIG. 4 is a schematic representation of an equivalent working model of charging and discharging of a satellite-borne secondary power supply single-event transient suppression circuit according to an embodiment of the invention;
fig. 5 schematically shows a comparison effect of output voltage waveforms of a satellite-borne secondary power supply single-particle transient suppression circuit according to an embodiment of the invention and a satellite-borne secondary power supply circuit without a single-particle transient suppression unit circuit.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
Fig. 1 schematically shows a unit composition schematic diagram of a satellite-borne secondary power supply single-particle transient suppression circuit according to the present embodiment, and fig. 2 schematically shows a structure schematic diagram of the satellite-borne secondary power supply single-particle transient suppression circuit according to the present embodiment.
As shown in fig. 1, the satellite-borne secondary power supply single-event transient suppression circuit according to the present embodiment includes: a power conversion unit 103, a pulse width modulation unit 102 and a single-event transient suppression unit 101. The output end of the pulse width modulation unit 102 is connected to the power conversion unit 103, and the single-event transient suppression unit 101 is connected to the slow start end of the pulse width modulation unit 102, as shown in fig. 2. The pulse width modulation unit 102 drives the power conversion unit 103 by generating a pulse signal, so that the output terminal of the secondary power supply maintains a stable voltage output. When the pulse width modulation unit 102 generates a single event effect, the single event transient suppression unit 101 connected with the slow start end of the pulse width modulation unit 102 can effectively suppress the problem of output voltage reduction of the pulse width modulation unit 102 of the satellite-borne secondary power supply due to the single event effect, and greatly enhance the power supply stability and reliability of the satellite-borne secondary power supply.
As shown in fig. 2, the single-event transient suppression unit 101 according to the present embodiment is a circuit including a resistor Rss and a capacitor Css connected in series. One end of the resistor Rss is connected to the slow start end of the pwm unit 102, and the other end of the resistor Rss is connected to one end of the capacitor Css. The other terminal of the capacitance Css is grounded.
The pulse width modulation unit 102 of the present embodiment adopts a pulse width modulator UC1825AL, and the power conversion unit 103 adopts a peripheral power conversion circuit commonly used by the pulse width modulator UC1825 AL. As shown in fig. 2, the circuit structure of the pulse width modulator UC1825AL (hereinafter referred to as pulse width modulator) specifically includes: the circuit comprises a slow start end, a 15 mu A constant current source, a 250 mu A constant current source, a first switch, a second switch, a first comparator, a second comparator and a pulse generator.
Wherein, one end of the 15 muA constant current source is connected with one end of the first switch.
One end of the 250 muA constant current source is connected with one end of the second switch, the other end of the 250 muA constant current source and the other end of the first switch are connected to the first input end of the first comparator, the first input end of the second comparator and the slow start end together, or the other end of the 250 muA constant current source, the other end of the first switch, the first input end of the first comparator, the first input end of the second comparator and the slow start end are connected to a circuit node together.
The other end of the second switch is grounded.
The second input terminal of the first comparator is connected to the threshold voltage supply, and the second input terminal of the second comparator is connected to the restart voltage supply. The output end of the first comparator and the output end of the second comparator are connected to the input end of the pulse generator in common. The output end of the pulse generator is connected with the input end of the power conversion circuit, so that the pulse width modulation unit is connected with the power conversion circuit.
When the pulse width modulator UC1825AL works normally, the first switch K1 is closed, the second switch K2 is opened, at this time, the voltage Vss at the slow start end is a fixed value Vnom, and the pulse generator of the pulse width modulator UC1825AL generates a pulse signal that causes the pulse width modulation unit to drive the power conversion circuit and maintain the voltage at the output end of the secondary power supply to be stable.
The following first explains and explains the operation principle of the pulse width modulator UC1825AL without the single-event transient suppression unit when a single-event effect occurs. Fig. 3 is a schematic diagram showing an output voltage waveform of the on-board secondary power supply according to the present embodiment when no single-event transient suppression unit circuit is provided.
As shown in fig. 3, when at time t0 the energetic particle in the spatial environment hits a latch (not shown in fig. 2) inside the pulse generator in the pulse width modulator, the latch output flips and the pulse width modulator is in a failure mode, i.e., the pulse width modulator has no driving pulse signal output. At this time, the capacitor connected to the slow start terminal of the pulse width modulator discharges through the 250 μ a constant current source, which causes the voltage Vss at the slow start terminal of the pulse width modulator UC1825AL to slowly drop from the fixed value Vnom to the restart voltage Vrestart, and at this time, the state of the latch is updated. And then, a capacitor connected with a slow start end of the pulse width modulator is charged through a 15 muA constant current source, the voltage Vss of the slow start end is slowly increased, when the voltage Vss reaches a threshold voltage Vth for starting the pulse width modulator, the pulse width modulator generates a driving pulse signal again, and at the moment, the pulse width modulator is considered to complete a restart process. During the period (t 0-t 3) when the pulse width modulator does not generate the driving pulse, i.e. during the restart period, the output voltage of the secondary power supply will rapidly drop to zero until the slow start voltage Vss of the pulse width modulator reaches the threshold voltage Vth, and the output voltage rises again slowly. Therefore, the secondary power supply can generate transient power failure when single-particle effect occurs, so that the problem of unstable power supply is caused.
The following explains and explains the operating principle of the satellite-borne secondary power supply single-particle transient suppression circuit according to the present embodiment when a single-particle effect occurs.
When the pulse width modulator UC1825AL generates a single event effect, the first comparator and the second comparator both output a high level, at this time, the first switch K1 is opened, the second switch K2 is closed, and the capacitor Css in the single event transient suppression circuit discharges through the 250 μ a constant current source, as shown in (4b) of fig. 4. Fig. 4 (4b) schematically shows an equivalent operation model of the discharge of the satellite-borne secondary power supply single-particle transient suppression circuit according to the present embodiment. At this time, the pulse width modulator UC1825AL has no pulse output, and both the voltage at the slow start terminal and the voltage at the secondary power supply output terminal start to drop. Wherein, the formula of discharging is:
Vss2(t)＝Vc(t0)-Rss*250μA
where t0 denotes the time when the output voltage of the secondary power supply starts to fall, Vc denotes the capacitor voltage, t denotes the discharge time, and Vss2 denotes the soft start voltage.
From the above formula, since the resistor Rss in the single-event transient suppression circuit is connected to the slow start terminal of the pulse width modulator UC1825AL, the 250 μ a constant current source instantaneously generates a voltage on the resistor Rss. Therefore, the voltage Vss at the restart terminal rapidly drops according to the above discharge formula and is rapidly pulled down to the restart voltage Vrestart. At this time, the first comparator outputs high level, the second comparator outputs low level, the first switch K1 is closed, the second switch K2 is opened, the capacitor Css in the single-event transient suppression circuit is charged by the 15 μ a constant current source of the pulse width modulator UC1825AL, and as shown in (4a) of fig. 4, the voltage at the slow start end is increased. Fig. 4 (4a) schematically shows an equivalent operation model for charging the on-board secondary power supply single-event transient suppression circuit according to the present embodiment. Wherein, the formula of charging is:
Vss1(t)＝Vc(t2)+Rss*15μA
wherein t2 represents the time when the capacitor starts to charge, t represents the charging time, and Vss1 represents the slow-start voltage.
Due to the existence of the resistor Rss, the discharge time of the capacitor Css is short, and the voltage drop at two ends of the capacitor Css in the single-event transient suppression circuit is small, so when the 15 muA constant current source is charged, the capacitor can be rapidly charged, and the voltage at two ends of the capacitor is rapidly increased. According to the charging formula, when the voltage at the slow start end rises and reaches the threshold voltage Vth, the first comparator outputs a low level, the second comparator outputs a high level, and the pulse signal of the pulse generator in the pulse width modulator UC1825AL is recovered in a short time, so that the output voltage of the secondary power supply is prevented from dropping.
Therefore, the restart time of the pulse width modulator UC1825AL can be adjusted by adjusting the resistance value of the resistor Rss. As can be seen from the circuit shown in fig. 2, the discharge current of the pulse width modulator UC1825AL is 250 μ a, and when the pulse width modulator UC1825AL operates normally, the slow start terminal voltage Vss is Vnom-5V. Considering the limit value, the resistance value of the single-event transient suppression circuit can be calculated according to the following resistance formula, wherein the resistance value is as follows:
therefore, when the resistance value Rss > 20K Ω, the restart time of the pulse width modulator UC1825AL is almost zero, i.e. the time between t0 and t3 shown in fig. 3 is almost zero, as shown in (5b) of fig. 5. Fig. 5 schematically shows a comparison effect of output voltage waveforms of the satellite-borne secondary power supply single-particle transient suppression circuit according to the present embodiment and a satellite-borne secondary power supply circuit without a single-particle transient suppression unit circuit. Fig. 5a and 5b are schematic diagrams of output voltage waveforms of circuits in which the single-event transient suppression unit is not provided and is provided, respectively. As shown in fig. 5, compared with the circuit in fig. 5a without the single-event transient suppression unit, when the single-event effect occurs, the output voltage fluctuation of the secondary power supply in fig. 5b is extremely small, and the stable power supply voltage can be reliably and continuously supplied to the satellite-borne electronic device.
Preferably, the resistance Rss in the circuit is equal to or greater than 24KΩ in consideration of resistance tolerance and temperature drift of the electronic components at high and low temperatures.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A satellite-borne secondary power supply single-particle transient suppression circuit is characterized by comprising:
a power conversion unit (103);
the output end of the pulse width modulation unit (102) is connected with the power conversion unit (103);
the single-event transient suppression unit (101), the single-event transient suppression unit (101) is connected with the slow start end of the pulse width modulation unit (102).
2. The on-board secondary power supply single-event transient suppression circuit according to claim 1, wherein the single-event transient suppression unit (101) comprises a resistor (Rss) and a capacitor (Css) connected in series,
one end of the resistor (Rss) is connected with the slow start end of the pulse width modulation unit, and the other end of the resistor (Rss) is connected with one end of the capacitor (Css);
the other end of the capacitance (Css) is connected to ground.
3. The on-board secondary power supply single event transient suppression circuit according to claim 2, wherein said resistor (Rss) has a resistance greater than 20K Ω.
4. The satellite-borne secondary power supply single-event transient suppression circuit according to claim 1, wherein the pulse width modulation unit (102) comprises a slow start terminal, a first constant current source, a second constant current source, a first switch (K1), a second switch (K2), a first comparator, a second comparator and a pulse generator;
one end of the first constant current source is connected to one end of the first switch (K1),
one end of the second constant current source is connected with one end of the second switch (K2), and the other end of the second constant current source and the other end of the first switch (K1) are commonly connected to the first input ends and the slow start end of the first comparator and the second comparator;
the other end of the second switch (K2) is grounded;
the second input end of the first comparator is connected to a threshold voltage power supply, and the second input end of the second comparator is connected to a restart voltage power supply;
the output ends of the first comparator and the second comparator are commonly connected to the input end of the pulse generator.
5. The on-board secondary power supply single-event transient suppression circuit of claim 4, wherein the first constant current source is a 15 μ A constant current source and the second constant current source is a 250 μ A constant current source.
6. The on-board secondary power supply single-event transient suppression circuit according to claim 4, wherein the pulse width modulation unit (102) is connected to the power conversion unit (103) by connecting an output end of the pulse generator to an input end of the power conversion unit (103).
7. The on-board secondary power supply single event transient suppression circuit according to any one of claims 1 to 6, wherein when the pulse width modulation unit (102) is in normal operation, the first switch (K1) is closed, the second switch (K2) is opened, and a pulse generator of the pulse width modulation unit (102) generates a pulse signal and drives the power conversion unit (103) to stabilize the output voltage of the secondary power supply.
8. The satellite-borne secondary power supply single-particle transient suppression circuit according to any one of claims 1 to 6, wherein when the pulse width modulation unit (102) generates a single-particle effect, the first switch (K1) is opened, the second switch (K2) is closed, the capacitor (Css) is discharged through a 250 μ A constant current source, so that the voltage at the slow start end is rapidly reduced to the restart voltage, and the discharge formula is as follows:
Vss2(t)＝Vc(t0)-Rss*250μA
where t0 denotes the time when the capacitor starts to discharge, Vc denotes the capacitor voltage, t denotes the discharge time, and Vss2 denotes the slow start voltage.
9. The on-board secondary power supply single-event transient suppression circuit of claim 8, wherein when the voltage of the slow start terminal rapidly drops to a restart voltage, the first switch (K1) is closed, the second switch (K2) is opened, the capacitor (Css) is charged by a 15 μ Α constant current source, such that the voltage of the slow start terminal rapidly rises to a threshold voltage, and the charging formula is as follows:
Vss1(t)＝Vc(t2)+Rss*15μA
wherein t2 represents the time when the capacitor starts to charge, t represents the charging time, and Vss1 represents the slow-start voltage.
10. The on-board secondary power supply single event transient suppression circuit of claim 1, wherein said pulse width modulation unit (102) is a pulse width modulator UC1825 AL.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351698.8A CN114172358A (en) | 2021-11-16 | 2021-11-16 | Satellite-borne secondary power supply single-particle transient suppression circuit |
| PCT/CN2022/115603 WO2023087835A1 (en) | 2021-11-16 | 2022-08-29 | Spaceborne secondary power supply single event transient suppression circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351698.8A CN114172358A (en) | 2021-11-16 | 2021-11-16 | Satellite-borne secondary power supply single-particle transient suppression circuit |
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| CN114172358A true CN114172358A (en) | 2022-03-11 |
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| CN202111351698.8A Pending CN114172358A (en) | 2021-11-16 | 2021-11-16 | Satellite-borne secondary power supply single-particle transient suppression circuit |
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| CN (1) | CN114172358A (en) |
| WO (1) | WO2023087835A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023087835A1 (en) * | 2021-11-16 | 2023-05-25 | 北京卫星制造厂有限公司 | Spaceborne secondary power supply single event transient suppression circuit |
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| CN101726702A (en) * | 2009-12-17 | 2010-06-09 | 中国航天科技集团公司第五研究院第五一○研究所 | Test method of single event effect of pulse width modulator (PWM) |
| CN107241014A (en) * | 2017-04-27 | 2017-10-10 | 兰州空间技术物理研究所 | Single-ion transient state effect for SCR pulse width modulators resists circuit |
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| AU2003290875A1 (en) * | 2002-11-14 | 2004-06-15 | International Rectifier Corporation | Circuit for providing resistance to single event upset to pulse width modulator integrated circuit |
| CN102983857B (en) * | 2012-11-15 | 2015-07-01 | 中国航天科技集团公司第九研究院第七七一研究所 | Phase-locked loop resistant to single particle transient state |
| EP3300254B1 (en) * | 2016-09-26 | 2021-07-07 | HS Elektronik Systeme GmbH | Control circuit for solid state power controller |
| CN110460231B (en) * | 2019-09-16 | 2021-04-23 | 中科亿海微电子科技（苏州）有限公司 | Charge pump resisting single-particle transient |
| CN212543649U (en) * | 2020-06-30 | 2021-02-12 | 成都四威功率电子科技有限公司 | Frequency oscillator integrating frequency modulation mode switch power supply slow starting function |
| CN114172358A (en) * | 2021-11-16 | 2022-03-11 | 北京卫星制造厂有限公司 | Satellite-borne secondary power supply single-particle transient suppression circuit |
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2021
- 2021-11-16 CN CN202111351698.8A patent/CN114172358A/en active Pending
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- 2022-08-29 WO PCT/CN2022/115603 patent/WO2023087835A1/en unknown
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| CN101726702A (en) * | 2009-12-17 | 2010-06-09 | 中国航天科技集团公司第五研究院第五一○研究所 | Test method of single event effect of pulse width modulator (PWM) |
| CN107241014A (en) * | 2017-04-27 | 2017-10-10 | 兰州空间技术物理研究所 | Single-ion transient state effect for SCR pulse width modulators resists circuit |
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| 张倩倩，等: ""宇航电源脉宽调制器单粒子效应试验研究"", 《航天器环境工程》, vol. 37, no. 6, pages 596 - 601 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023087835A1 (en) * | 2021-11-16 | 2023-05-25 | 北京卫星制造厂有限公司 | Spaceborne secondary power supply single event transient suppression circuit |
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