TY - GEN
T1 - Stability of multi-winding coupled inductors in buck converters
AU - Oraw, Bradley
AU - Ayyanar, Raja
PY - 2008/12/30
Y1 - 2008/12/30
N2 - Coupled inductors in multiphase buck are becoming more popular in point of load applications. Most interest has focused on 2-winding coupled inductors. Analysis and design of 2-winding devices is maturing. However, a generalized understanding of multi-winding coupled inductors is less understood. This paper discusses a general theory for multi-winding structures. In particular, stability is examined in detail. It is shown in this paper that for large negative coupling coefficients, the multi-winding coupled buck exhibits unstable negative inductance. This paper is the first to document such an instability.
AB - Coupled inductors in multiphase buck are becoming more popular in point of load applications. Most interest has focused on 2-winding coupled inductors. Analysis and design of 2-winding devices is maturing. However, a generalized understanding of multi-winding coupled inductors is less understood. This paper discusses a general theory for multi-winding structures. In particular, stability is examined in detail. It is shown in this paper that for large negative coupling coefficients, the multi-winding coupled buck exhibits unstable negative inductance. This paper is the first to document such an instability.
UR - http://www.scopus.com/inward/record.url?scp=57949104165&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57949104165&partnerID=8YFLogxK
U2 - 10.1109/INTLEC.2008.4664129
DO - 10.1109/INTLEC.2008.4664129
M3 - Conference contribution
AN - SCOPUS:57949104165
SN - 9781424420568
T3 - INTELEC, International Telecommunications Energy Conference (Proceedings)
BT - INTELEC 2008
T2 - 30th Annual International Telecommunications Energy Conference, INTELEC 2008
Y2 - 14 September 2008 through 18 September 2008
ER -