A 40nm CMOS Hysteretic Buck DC-DC Converter With Digital-Controlled Power-Driving-Tracked-Duration Current Pump

Ding, Xiangbin; Chan, P.K.; Leung, Ka Nang

doi:10.1109/access.2020.3026678

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…One of the main challenges in designing a synchronous buck converter is achieving precise voltage regulation under varying load conditions, input voltage fluctuations, and temperature changes [10]. To address this challenge, the control strategy of the synchronous buck converter plays a critical role in ensuring stable and efficient operation.…”

Section: Int J Elec and Comp Engmentioning

confidence: 99%

Fuzzy control of synchronous buck converters utilizing fuzzy inference system for renewable energy applications

Martinez

Ariza

Sarmiento

2023

IJECE

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<p>In the present research, an innovative fuzzy control approach is developed specifically for synchronous buck converters utilized in renewable energy applications. The proposed control strategy effectively manages load changes, nonlinear loads, and input voltage variations while improving both stability and transient response. The method employs a fuzzy inference system (FIS) that integrates adaptive control, feedforward control, and multivariable control to guarantee optimal performance under a wide range of operating conditions. The design of the control scheme involves formulating a rule base connecting input variables to an output variable, which signifies the duty cycle of the switching signal. The rule base is configured to dynamically modify control rules and membership functions in accordance with load conditions, input voltage fluctuations, and other contributing factors. The performance of the control scheme is evaluated in comparison to conventional techniques, such as proportional integral derivative (PID) control. Results indicate that the advanced fuzzy control approach surpasses traditional methods in terms of voltage regulation, stability, and transient response, particularly when faced with variable load conditions and input voltage changes. As a result, this control scheme is highly compatible with renewable energy systems, encompassing solar and wind power installations where input voltage and load conditions may experience considerable fluctuations. This research highlights the potential of the proposed fuzzy control approach to significantly enhance the performance and reliability of renewable energy systems.</p>

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Section: Int J Elec and Comp Engmentioning

confidence: 99%

Fuzzy control of synchronous buck converters utilizing fuzzy inference system for renewable energy applications

Martinez

Ariza

Sarmiento

2023

IJECE

View full text Add to dashboard Cite

show abstract

“…However, both methods could prolong transient response. To improve transient response, an accelerating circuit or an embedded digital algorithm was augmented to reduce the transient recovery time [21][22][23][24][25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Digital Adaptive On-Time and Transient-Optimized Ripple Controlled Buck Converter

Yang,

Wu,

Yeh

et al. 2023

IEEE Access

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Ripple-based buck converters often encounter issues of operating frequency variation, system stability, and steady-state voltage error, leading to degradation in voltage regulation performance. While analog controls are commonly employed to address these issues, they still face challenges due to process uncertainty and component parameter drifting caused by chip aging. In contrast, digital controls are more able to immune to the challenges that analog circuits faced. However, the sampling rate and analog-todigital conversion (ADC) are the two shortfalls that degrade circuit response time compared to that of the analog circuits. The weakness is being improved by design flexibility and algorithms. This paper introduces a novel approach utilizing a digital approach to reduce the variation of operating frequency to very low range, which is called digital constant frequency (DCF) control. Additionally, the digital transientoptimized control (DTOC) is proposed to significantly shorten the transient settling time. The digital control does not need to use the ADC. Given the load current change between 100 and 500mA, the DCF control reduced the operating frequency variation from 40% to 2.8%. Furthermore, the DTOC significantly shortened the settling time for both the rising and falling responses by 60% compared to the converter without DTOC. INDEX TERMSRipple-based buck converter, adaptive on-time, frequency variation, load transient, digital constant frequency (DCF), digital transient-optimized control (DTOC)

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Compact size buck converter using small output capacitance with pole-tuning technique

Lee

Cho

Kim

2023

Microelectronics Journal

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A 40nm CMOS Hysteretic Buck DC-DC Converter With Digital-Controlled Power-Driving-Tracked-Duration Current Pump

Abstract: The authors would like to thank MediaTek, Singapore for the scholarship and the sponsorship of chip fabrication.

Cited by 6 publications

References 43 publications

Fuzzy control of synchronous buck converters utilizing fuzzy inference system for renewable energy applications

Fuzzy control of synchronous buck converters utilizing fuzzy inference system for renewable energy applications

Digital Adaptive On-Time and Transient-Optimized Ripple Controlled Buck Converter

Compact size buck converter using small output capacitance with pole-tuning technique

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