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A fully ZVS critical conduction mode boost PFC

Marvi, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/TPEL.2011.2171045
  3. Publisher: 2012
  4. Abstract:
  5. Boost converter operating in critical conduction mode is widely used in low-power power factor corrector because of its simplicity and low switching losses. The switching loss due to parasitic capacitor discharge at the on-time instant can also be reduced by a valley switching technique. In this paper, we introduce a new driver topology for the high-side switch in a synchronous boost converter operating in the critical conduction mode to obtain full zero-voltage switching. Using the proposed high-side driver topology, the conventional control circuit is sufficient to control the low-side switch, and no additional control circuit is required to adjust the timing of the switches. Finally, the line current distortion is reduced through the use of on-time extension technique to less than 10 in the defined load range. Based on approximate mathematical calculations, two separate distortion reduction circuits are designed to implement the on-time extension technique for both voltage-mode and current-mode control methods
  6. Keywords:
  7. Zero-voltage switching (ZVS) ; Additional control ; BOOST converter ; Boost PFC ; Conventional control ; Critical conduction modes ; Current Mode Control ; Distortion reduction ; High-side driver ; High-side switch ; Line currents ; Load range ; Low Power ; Mathematical calculations ; Parasitic capacitors ; Switching loss ; Switching techniques ; Voltage mode ; Critical mode boost power factor corrector (PFC) ; Line current distortions ; Power factor corrector (PFC) ; Synchronous boost converters ; Valley switching ; Active filters ; Power converters ; Timing circuits ; Topology
  8. Source: IEEE Transactions on Power Electronics ; Volume 27, Issue 4 , October , 2012 , Pages 1958-1965 ; 08858993 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6041035