Author : Rifat Alam Siddique
Publisher :
ISBN 13 :
Total Pages : 97 pages
Book Rating : 4.:/5 (112 download)
Book Synopsis Totem-pole Power Factor Correction Rectifier with Gallium-Nitride Devices for Telecom Power Supply by : Rifat Alam Siddique
Download or read book Totem-pole Power Factor Correction Rectifier with Gallium-Nitride Devices for Telecom Power Supply written by Rifat Alam Siddique and published by . This book was released on 2016 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wide-bandgap (WBG) semiconductor technology will largely replace silicon switching devices in the active power factor correction (PFC) circuit of a telecom power supply in the near future. Superior electrical characteristics of commercially available Gallium Nitride (GaN) devices make totem-pole PFC a clear winner over competing topologies in terms of efficiency. This thesis focuses on the development of a totem-pole PFC using state-of-the-art GaN devices for next-generation telecom power supplies. A detailed investigation of ac zero-crossings of this topology has successfully identified the rapid fluctuation in voltage across low-frequency MOSFET as the source of common-mode noise. An equivalent circuit accompanied by a set of equations correlate different circuit parameters with the noise generation. Challenges associated with current reversal near zero-crossings of a synchronous totem-pole PFC are studied and a formerly unreported source of common-mode noise generation around ac zero-crossings has been investigated in detail.