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A new variable frequency zero voltage switching control method for boost converter operating in boundary conduction mode

Norouzi, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.5829/ije.2020.33.11b.14
  3. Publisher: Materials and Energy Research Center , 2020
  4. Abstract:
  5. This paper proposes a new variable frequency zero voltage switching (ZVS) control method for boost converter operating in boundary conduction mode (BCM). The intended method keeps the converter in BCM despide of the load and input voltage variations. This is done by changing switching frequency in a certain specified range. The proposed method can guarantee circuit performance in BCM via zero-crossing detection of the inductor current and changing the switching frequency. In addition, with a slight modification in control structure, it is possible to achieve a fully ZVS in all cases. This converter control is carried out in analog form without using microprocessors which, compared with the digital one, has less noise, cost and processing challenges in high frequency applications. Simulation results obtained from applying the proposed method on a GaN-based synchronous boost converter in two different switching frequency ranges (100KHz and 1MHz) are indicative of the proposed strategy advantages. © 2020 Materials and Energy Research Center. All rights reserved
  6. Keywords:
  7. DC-DC Gan Boost Converter ; Extended Switching ; Fully Zero Voltage Switching ; High Frequency Switching ; Valley Switching ; Zero Current Switching ; DC-DC converters ; Gallium nitride ; III-V semiconductors ; Zero voltage switching ; Boundary conduction mode ; Circuit performance ; Converter controls ; High-frequency applications ; Inductor currents ; Synchronous boost converters ; Variable frequencies ; Zero-crossing detection ; Switching frequency
  8. Source: International Journal of Engineering, Transactions B: Applications ; Volume 33, Issue 11 , 2020 , Pages 2222-2232
  9. URL: http://www.ije.ir/article_118848.html