A study on radiation effects on PWM-IC controller of DC/DC power buck converter

Lho, Young Hwan; Hwang, Yeu Sung; Lee, Sang Yong

doi:10.1109/iccas.2013.6704221

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…In this architecture, a hybrid redundancy scheme that combines Spatial and Temporal redundancies is used to design a high-reliability redundancy scheme that mitigates the problems encountered with the ordinary TMR/Simplex technique. The motivation for the proposed technique rests on the fact that radiation-induced faults result in one or more of the following effects on the DC-DC converter PWM controller output [27][28][29]:…”

Section: The Proposed Techniquementioning

confidence: 99%

A High-Reliability Redundancy Scheme for Design of Radiation-Tolerant Half-Duty Limited DC-DC Converters

et al. 2021

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Redundancy techniques are commonly used to design radiation- and fault-tolerant circuits for space applications, to ensure high reliability. However, higher reliability often comes at a cost of increased usage of hardware resources. Triple Modular Redundancy (TMR) ensures full single fault masking, with a >200% power and area overhead cost. TMR/Simplex ensures full single fault masking with a slightly more complicated circuitry, inefficient use of resource and a >200% power and area overhead cost, but with higher reliability than that of TMR. In this work, a high-reliability Spatial and Time Redundancy (TR) hybrid technique, which does not abandon a working module and is applicable for radiation hardening of half-duty limited DC-DC converters, is proposed and applied to the design of a radiation-tolerant digital controller for a Dual-Switch Forward Converter. The technique has the potential of double fault masking with a <2% increase in resource overhead cost compared to TMR. Moreover, for a Simplex module failure rate, λ, of 5%, the Reliability Improvement Factor (RIF) over the Simplex system is 20.8 and 500 for the proposed technique’s two- and three-module implementations, respectively, compared to a RIF over the Simplex system of only 7.25 for TMR and 14.3 for the regular TMR/Simplex scheme.

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Section: The Proposed Techniquementioning

confidence: 99%

A High-Reliability Redundancy Scheme for Design of Radiation-Tolerant Half-Duty Limited DC-DC Converters

et al. 2021

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“…In this aspect, it is of great significance to research on the radiation-resistant reinforcement of Buck. However, the existing research on radiation-hardened Buck is still limited to the analysis of Buck irradiation test and design of radiation devices [16,17,18,19,20,21,22,23,24], and the research on radiation-hard from circuit design is lacking. In this paper, a radiation-hard adaptive on-time generator is proposed by utilizing of leakage current compensation.…”

Section: Introductionmentioning

confidence: 99%

A radiation-hardened Buck converter

Yang

Luo

et al. 2019

IEICE Electron. Express

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Buck converter is widely used in the aerospace field. However, radiation in the aerospace environment will result in degradation or failure of devices and circuits. This paper presents a radiation-hard Buck, which is an adaptive on-time Buck. A radiation-hard adaptive on-time generator is proposed by utilizing of leakage current compensation. The proposed radiation-hard adaptive on-time generator is composed of an adaptive ontime timing block and a charging current generator. Finally, the proposed Buck is fabricated in a standard 0.18 µm BCD process. And the radiation tests show that the Buck still maintains stability after total ionizing dose irradiation at a total dose of 350 Krad (Si).

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Tuning of controller parameters by FCbT with stability constraints for non-minimum phase plants

Matsuo

Yubai

Yashiro

et al. 2013

2013 13th International Conference on Control, Automation and Systems (ICCAS 2013)

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We propose the controller tuning method considering closed-loop stability after tuning without the identified plant modeL The methods are formulated as a model reference control problem in which the reference model is chosen by the user. In the case of non-minimum phase systems, the unstable zeros of the plant need to be included in the reference model to avoid unstable pole-zero cancellation. This paper proposes the model-free controller tuning for non-minimum phase plants estimating its unstable zeros by the flexible reference model in the process of parameter updates. The effectiveness of the proposed method is confirmed by simulation examples.

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A study on radiation effects on PWM-IC controller of DC/DC power buck converter

Cited by 6 publications

References 3 publications

A High-Reliability Redundancy Scheme for Design of Radiation-Tolerant Half-Duty Limited DC-DC Converters

A High-Reliability Redundancy Scheme for Design of Radiation-Tolerant Half-Duty Limited DC-DC Converters

A radiation-hardened Buck converter

Tuning of controller parameters by FCbT with stability constraints for non-minimum phase plants

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