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CN106130545B - A kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation - Google Patents

A kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation Download PDF

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Publication number
CN106130545B
CN106130545B CN201610430735.7A CN201610430735A CN106130545B CN 106130545 B CN106130545 B CN 106130545B CN 201610430735 A CN201610430735 A CN 201610430735A CN 106130545 B CN106130545 B CN 106130545B
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automatic biasing
pll
generation circuit
signal
charge pump
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CN106130545A (en
Inventor
周昕杰
陈嘉鹏
潘滨
张国贤
陈瑶
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CETC 58 Research Institute
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CETC 58 Research Institute
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08Details of the phase-locked loop
    • H03L7/085Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08Details of the phase-locked loop
    • H03L7/085Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/089Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
    • H03L7/0891Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
    • H03L7/0893Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump the up-down pulses controlling at least two source current generators or at least two sink current generators connected to different points in the loop
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08Details of the phase-locked loop
    • H03L7/099Details of the phase-locked loop concerning mainly the controlled oscillator of the loop

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  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The present invention relates to a kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation, automatic biasing PLL ruggedized construction is by differentiating that single particle effect is to V in non-reinforced automatic biasing PLLBACKThe influence of signal, the automatic biasing generation circuit sensitive to single particle effect are reinforced, and the V for capableing of anti-single particle effect is obtainedBACKRSignal;And decide by vote the small signal of the first voltage controlled oscillator output after amplification, then through voting machine, export stable PLL output signal.The present invention has better anti-single particle effect capability compared with non-reinforced automatic biasing PLL, and can satisfy the demand of aerospace applications.

Description

A kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation
Technical field
The present invention relates to phaselocked loop (PLL) circuit, the automatic biasing PLL ruggedized constructions of especially a kind of Anti-single particle radiation.
Background technique
When electronic device works in space, the bombardment of high energy proton, high-energy neutron and universe heavy ion will receive.It hits Itself, and the secondary generated is hit, all electron hole pair can be ionized on body silicon;When the amount of charge of ionization accumulation reaches When to certain magnitude, disturbance can be generated to circuit state.Such as: the transient pulse in the storage bit flipping of class unit, combinational logic Deng these effects are commonly referred to as single particle effect.
Under large scale process conditions, influence of the single particle effect to circuit is mainly shown as single-particle inversion, main shadow Ring the circuit with storage organization.And for small size, circuit not only will receive the influence of Single event upset effecf, equally It will receive the influence of single-ion transient state disturbance effect.Stability that above two effect applies electronic device in space and can Huge threat is produced by property.
Many circuit structure researchs in relation to single particle effect Design of Reinforcement have been expanded in the world.Into deep-submicron After technique, how under the conditions of seldom occupying system power dissipation and area, the ability of device anti-single particle effect is improved, is always The emphasis that everybody pays close attention to.
With the continuous improvement of circuit level, phaselocked loop (Phase-Locked-Loop, PLL) has become in circuit Indispensable module.In aerospace applications, the temporary disturbance that single particle effect generates can make PLL circuit losing lock, influence entire The stability of circuit system.
As shown in Figure 1, being non-reinforced automatic biasing PLL circuit structure chart.Automatic biasing PLL is to generate one using feedback biasing Mutual conductance forms the equivalent transconductance cancellation of zero point and voltage controlled oscillator, thus obtain a natural frequency, damped coefficient and technique, Power supply, temperature are unrelated, to multiplier parameter N at weak relevant phaselocked loop.Automatic biasing PLL circuit is by phase frequency detector (PFD) 1, The 2, second charge pump of one charge pump (CP1) (CP2) 3, automatic biasing generation circuit (Bias Gen) 41, voltage controlled oscillator (VCO) 5, First capacitor C1 and the second capacitor C2 composition.Wherein CLKIN is input reference level, and PLL output signal passes through phase frequency detector 1 Compared with CLKIN signal carries out frequency and phase, U1/D1, U2/D2 signal are exported to the first charge pump 2 and the second charge pump 3, first capacitor C1 and the second capacitor C2 is passed through in the output of two groups of charge pumps, inputs VBIAS biasing to automatic biasing generation circuit 41 Signal.Automatic biasing generation circuit 41 generates VBACK signal and feeds back to the first charge pump 2 and the second charge pump 3, for controlling first The charge and discharge of charge pump 2 and the second charge pump 3.Meanwhile automatic biasing generation circuit 41 generates VBP, VBN signal to voltage controlled oscillator 5.Voltage controlled oscillator 5 is made of the first to the 5th delay unit and amplifier, the small letter that amplifier exports the 5th delay unit After number amplification, final PLL output is formed.
As shown in Fig. 2, being the 5 internal circuit configuration figure of voltage controlled oscillator of non-reinforced automatic biasing PLL circuit.Voltage controlled oscillator 5 by the first delay unit 51, the second delay unit 52, third delay unit 53, the 4th delay unit 54, the 5th delay unit 55 And amplifier 56 forms.First delay unit 51 input VIP1 meets the output VOP5 of the 5th delay unit 55, and VIN1 connects the 5th and prolongs The output VON5 of Shi Danyuan 55.Second delay unit 52 input VIP2 meets the output VOP1 of the first delay unit 51, and VIN2 connects the The output VON1 of one delay unit 51.Third delay unit 53 inputs the output VOP2, VIN3 that VIP3 connects the second delay unit 52 Meet the output VON2 of the second delay unit 52.4th delay unit 54 input VIP4 meets the output VOP3 of third delay unit 53, VIN4 meets the output VON3 of third delay unit 53.5th delay unit 55 input VIP5 connects the output of the 4th delay unit 54 VOP4, VIN5 meet the output VON4 of the 4th delay unit 54.Output VOP5 and the VON5 signal of 5th delay unit 55 is used as and puts The differential input signal that big device 56 inputs, two signals ultimately form PLL output after amplification.
It as in Figure 3-5, is VBACK signal in non-reinforced automatic biasing PLL and the analysis of VBN, VBP signal single particle effect Figure.Such as Fig. 3, after VBACK signal is influenced by single particle effect, PLL output is lost two pulse letters compared with CLKIN Number, illustrate that VBACK signal is sensitive to single particle effect.Such as Fig. 4, after VBN signal is influenced by single particle effect, PLL output It is lost a pulse signal compared with CLKIN, also illustrates that VBN signal is sensitive to single particle effect.Such as Fig. 5, when VBP signal by After influencing to single particle effect, PLL output has the duty ratio of a pulse signal to become very severe compared with CLKIN, almost It cannot be used by circuit, equally illustrate that VBP signal is also very sensitive to single particle effect.
Summary of the invention
The technical problem to be solved by the present invention is in aerospace environment in application, automatic biasing PLL is by single particle effect shadow It rings, so that circuit performance deteriorates, losing lock, provides a kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation, which has more Good anti-single particle effect capability, and can satisfy the demand of aerospace applications.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation of the present invention, automatic biasing PLL ruggedized construction is by sentencing Single particle effect is to V in not non-reinforced automatic biasing PLLBACKThe influence of signal, the automatic biasing sensitive to single particle effect generate electricity Road is reinforced, and the V for capableing of anti-single particle effect is obtainedBACKRSignal;And the small signal of the first voltage controlled oscillator output is passed through After amplification, then by voting machine voting, export stable PLL output signal.
Further, automatic biasing PLL ruggedized construction include phase frequency detector, the first charge pump, the second charge pump, first from Offset generating circuit, the second automatic biasing generation circuit, third automatic biasing generation circuit, the first voltage controlled oscillator, first capacitor C1 With the second capacitor C2, by differentiating that single particle effect is to V in non-reinforced automatic biasing PLLBACKThe influence of signal, selection is suitably certainly It biases PLL circuit and exports electric current, using the first, second, third automatic biasing generation circuit, make the V of feedbackBACKRVoltage is in single-particle It keeps stablizing in radiation environment, makes the first charge pump and the second charge pump to the charge and discharge electric energy of first capacitor C1 and the second capacitor C2 Trying hard to keep, it is fixed to keep steady, and makes the output signal V of the first, second, third automatic biasing generation circuitBNRAnd VBPRIt keeps stablizing, to make the The input biasing of one voltage controlled oscillator keeps stablizing.
Further, the first voltage controlled oscillator includes the first delay unit, the second delay unit, third delay unit, the Four delay units, the 5th delay unit, the first amplifier, the second amplifier, third amplifier and voting machine, it is single to the 5th delay The signal VOP5 and VON5 of member output is amplified by the first, second, third amplifier, exports the amplified signal in three tunnels, Decide by vote using voting machine, exports final PLL output signal.
Beneficial effects of the present invention:
1, compared with non-reinforced automatic biasing PLL, automatic biasing PLL ruggedized construction improves circuit and works in aerospace environment Reliability, ensure that losing lock will not occur when being influenced by single particle effect for automatic biasing PLL circuit.
2, automatic biasing PLL ruggedized construction is by finding out node sensitive to single particle effect in circuit, and differentiates simple grain Sub- effect is to VBACKThe influence of signal, and then suitable automatic biasing PLL circuit is selected to export electric current;Simultaneously to the first voltage controlled oscillation Three tunnel votings are carried out after device output low level signal amplification;Compared with the PLL of global triplication redundancy Design of Reinforcement, smaller face is used Long-pending and power consumption, and reached identical consolidation effect.
Detailed description of the invention
Fig. 1 is non-reinforced automatic biasing PLL circuit structure chart;
Fig. 2 is the voltage controlled oscillator internal circuit configuration figure of non-reinforced automatic biasing PLL circuit;
Fig. 3 is VBACK signal single particle effect analysis chart in non-reinforced automatic biasing PLL;
Fig. 4 is VBN signal single particle effect analysis chart in non-reinforced automatic biasing PLL;
Fig. 5 is VBP signal single particle effect analysis chart in non-reinforced automatic biasing PLL;
Fig. 6 is a kind of automatic biasing PLL ruggedized construction figure of Anti-single particle radiation of the present invention;
Fig. 7 is a kind of first voltage controlled oscillator internal junction of the automatic biasing PLL ruggedized construction of Anti-single particle radiation of the present invention Composition.
Specific embodiment
Embodiment cited by the present invention, is merely used to help understand the present invention, should not be construed as protecting model to the present invention The restriction enclosed for those skilled in the art without departing from the inventive concept of the premise, can also be right The present invention makes improvements and modifications, these improvement and modification are also fallen into the range of the claims in the present invention protection.
The invention will be further described below in conjunction with the accompanying drawings.
As shown in fig. 6, for a kind of automatic biasing PLL ruggedized construction figure of Anti-single particle radiation of the present invention;Automatic biasing PLL adds Fixing structure includes phase frequency detector 1, the first charge pump 2, the second charge pump 3, the first automatic biasing generation circuit 42, the second automatic biasing Generation circuit 43, third automatic biasing generation circuit 44, the first voltage controlled oscillator 6, first capacitor C1 and the second capacitor C2.Wherein CLKIN is input reference level, and PLL output signal carries out the ratio of frequency and phase by phase frequency detector 1 and CLKIN signal Compared with exporting U1/D1, U2/D2 signal to the first charge pump 2 and the second charge pump 3, first capacitor is passed through in the output of two groups of charge pumps C1 and the second capacitor C2, to the first automatic biasing generation circuit 42, the second automatic biasing generation circuit 43, third automatic biasing generation circuit 44 input VBIAS offset signals.To make the first automatic biasing generation circuit 42, the second automatic biasing generation circuit 43, third self-bias Set generation circuit 44 generate be not susceptible to single particle effect disturbance VBACKR signal feed back to the first charge pump 2 and the second charge Pump 3, for controlling the charge and discharge of the first charge pump 2 and the second charge pump 3.Meanwhile first automatic biasing generation circuit 42, second from Offset generating circuit 43, third automatic biasing generation circuit 44 generate VBNR, VBPR signal to the first voltage controlled oscillator 6.First pressure Oscillator 6 is controlled to include the first to the 5th delay unit 51,52,53,54,55, first to third amplifier 61,62,63 and decide by vote Device 64 after first low level signal amplification for exporting the 5th delay unit 55 to third amplifier 61,62,63, passes through voting machine 64 Voting forms final anti-radiation automatic biasing PLL output.
As shown in fig. 7, for a kind of first voltage controlled oscillator of the automatic biasing PLL ruggedized construction of Anti-single particle radiation of the present invention 6 internal structure charts;First voltage controlled oscillator 6 includes the first delay unit 51, the second delay unit 52, third delay unit 53, the 4th delay unit 54, the 5th delay unit 55 and the first amplifier 61, the second amplifier 62, third amplifier 63, voting Device 64.First delay unit 51 input VIP1 meets the output VOP5 of the 5th delay unit 55, and VIN1 connects the 5th delay unit 55 Export VON5.The output VOP1, VIN2 that second delay unit 52 input VIP2 connects the first delay unit 51 connect the first delay unit 51 output VON1.The output VOP2, VIN3 that the input of third delay unit 53 VIP3 connects the second delay unit 52 connect the second delay The output VON2 of unit 52.4th delay unit 54 input VIP4 meets the output VOP3 of third delay unit 53, and VIN4 connects third The output VON3 of delay unit 53.5th delay unit 55 input VIP5 meets the output VOP4 of the 4th delay unit 54, and VIN5 connects The output VON4 of 4th delay unit 54.Output VOP5 and the VON5 signal of 5th delay unit 55 amplify as first to third The differential input signal that device 61,62,63 inputs, two signals export respective waveform after amplification, are passing through voting machine 64 Voting forms final anti-radiation automatic biasing PLL output.
The working principle of the invention:
The present invention is utilized by differentiating influence of the single particle effect to VBACK signal in non-reinforced automatic biasing PLL, Jin Erxuan Select suitable automatic biasing PLL circuit output electric current makes to feed back using the first, second, third automatic biasing generation circuit 42,43,44 VBACKR voltage keep stablizing in single-particle radiation environment, and then stabilize the first charge pump 2 and the second charge pump 3 to the The charging and discharging capabilities of one capacitor C1 and the 2nd C2 make the output signal of the first, second, third automatic biasing generation circuit 42,43,44 VBNR and VBPR keeps stablizing, so that the input biasing of the first voltage controlled oscillator 6 be made to keep stablizing.Meanwhile using first, second, 42,43,44 structure of third automatic biasing generation circuit avoids influence of the single particle effect to single automatic biasing generation circuit and involves The stabilization of entire pll system.
Meanwhile deciding by vote after being amplified to the small signal of the first voltage controlled oscillator 6 output, the 5th delay unit 55 is exported Signal VOP5 and VON5 amplified by the first, second, third amplifier 61,62,63, export the amplified letter in three tunnels Number, decide by vote using voting machine 64, export final PLL output signal, it is unstable right to export so as to avoid single amplifier It is influenced caused by PLL.
The present invention radiates emulation technology using single-particle, and the automatic biasing PLL for devising a kind of Anti-single particle radiation reinforces knot Structure.Compared with non-reinforced automatic biasing PLL, which is designed by the radiation hardened to circuit, to have better anti-simple grain Sub- effect capability, and can satisfy the demand of aerospace applications.The present invention is by differentiating single particle effect in non-reinforced automatic biasing PLL Influence to VBACK signal so that the automatic biasing generation circuit sensitive to single particle effect is reinforced obtains that simple grain can be resisted The VBACKR signal of sub- effect.Meanwhile to the small signal of the first voltage controlled oscillator 6 output after amplifier amplifies, then pass through Voting machine is put to the vote, it is ensured that the stabilization of output signal guarantees to improve the ability of automatic biasing PLL anti-single particle effect Automatic biasing PLL not losing lock in radiation environment.

Claims (3)

1. a kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation, it is characterised in that: the automatic biasing PLL ruggedized construction packet Include (1) first charge pump (2) of phase frequency detector, the second charge pump (3), the first automatic biasing generation circuit (42), the second automatic biasing Generation circuit (43), third automatic biasing generation circuit (44), the first voltage controlled oscillator (6), first capacitor C1 and the second capacitor C2;
Wherein, the first input end of the phase frequency detector (1) connects reference level CLKIN, the second input termination first pressure Control the PLL signal of oscillator (6) output;The phase frequency detector (1) exports U1/D1 signal to the first charge pump (2), output U2/D2 signal gives the second charge pump (3);First capacitor C1 and the second capacitor C2 are passed through in the output of two groups of charge pumps respectively, to One automatic biasing generation circuit (42), the second automatic biasing generation circuit (43), third automatic biasing generation circuit (44) input biasing letter Number, the first automatic biasing generation circuit (42), the second automatic biasing generation circuit (43), third automatic biasing generation circuit (44) generate not It is easy the V disturbed by single particle effectBACKSignal feeds back to the first charge pump (2) and the second charge pump (3), for controlling first The charge and discharge of charge pump (2) and the second charge pump (3);Meanwhile the first automatic biasing generation circuit (42), the second automatic biasing generate electricity Road (43), third automatic biasing generation circuit (44) generate VBNR、VBPRSignal is to the first voltage controlled oscillator (6), the first voltage-controlled vibration It swings device (6) and exports anti-radiation automatic biasing PLL signal.
2. the automatic biasing PLL ruggedized construction of Anti-single particle radiation according to claim 1, it is characterised in that: the self-bias Setting PLL ruggedized construction includes phase frequency detector (1), the first charge pump (2), the second charge pump (3), the first automatic biasing generation circuit (42), the second automatic biasing generation circuit (43), third automatic biasing generation circuit (44), the first voltage controlled oscillator (6), first capacitor C1 and the second capacitor C2, by differentiating that single particle effect is to V in non-reinforced automatic biasing PLLBACKThe influence of signal, selection are suitable Automatic biasing PLL circuit exports electric current, using the first, second, third automatic biasing generation circuit (42,43,44), makes the V of feedbackBACKR Voltage keeps stablizing in single-particle radiation environment, makes the first charge pump (2) and the second charge pump (3) to first capacitor C1 and the The charging and discharging capabilities of two capacitor C2 keep stablizing, and believe the output of the first, second, third automatic biasing generation circuit (42,43,44) Number VBNRAnd VBPRIt keeps stablizing, so that the first voltage controlled oscillator (6) input biasing be made to keep stablizing.
3. the automatic biasing PLL ruggedized construction of Anti-single particle radiation according to claim 1, it is characterised in that: described first Voltage controlled oscillator (6) includes the first delay unit (51), the second delay unit (52), third delay unit (53), the 4th delay Unit (54), the 5th delay unit (55), the first amplifier (61), the second amplifier (62), third amplifier (63) and voting Device (64), to the 5th delay unit (55) output signal VOP5 and VON5 by the first, second, third amplifier (61,62, 63) it amplifies, exports the amplified signal in three tunnels, decide by vote using voting machine (64), export final PLL output signal.
CN201610430735.7A 2016-06-17 2016-06-17 A kind of automatic biasing PLL ruggedized construction of Anti-single particle radiation Active CN106130545B (en)

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CN106849943A (en) * 2016-12-21 2017-06-13 西安空间无线电技术研究所 A kind of VCO biasing circuits of alleviation SET effects
CN113032222B (en) * 2021-04-13 2022-10-28 浙江威固信息技术有限责任公司 Solid state disk resistant to single event functional interruption

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