TY - GEN
T1 - Multivariable analysis of VR controllers with load line regulation and phase current balancing
AU - Oraw, B.
AU - Ayyanar, Raja
PY - 2008
Y1 - 2008
N2 - The multivariable complexity of multiphase buck voltage regulators, is examined, including multi-input-multi-output models and multiple control objectives. Voltage regulation, load line regulation and phase current balancing are found to be competing control objectives. Decoupling control frameworks are proposed that resolve the multivariable conflict and simplify the controller design. Strategies for output impedance shaping are proposed. Simple current balancing control is demonstrated, which is also extended to provide novel phase shedding and asymmetrical current sharing control. This paper provides a complete voltage regulator control solution.
AB - The multivariable complexity of multiphase buck voltage regulators, is examined, including multi-input-multi-output models and multiple control objectives. Voltage regulation, load line regulation and phase current balancing are found to be competing control objectives. Decoupling control frameworks are proposed that resolve the multivariable conflict and simplify the controller design. Strategies for output impedance shaping are proposed. Simple current balancing control is demonstrated, which is also extended to provide novel phase shedding and asymmetrical current sharing control. This paper provides a complete voltage regulator control solution.
UR - http://www.scopus.com/inward/record.url?scp=49249120587&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49249120587&partnerID=8YFLogxK
U2 - 10.1109/APEC.2008.4522960
DO - 10.1109/APEC.2008.4522960
M3 - Conference contribution
AN - SCOPUS:49249120587
SN - 9781424418749
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1728
EP - 1734
BT - 2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
T2 - 2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
Y2 - 24 February 2008 through 28 February 2008
ER -