TY - GEN
T1 - The effect of switching transitions on switched capacitor converters losses
AU - Evzelman, Michael
AU - Ben-Yaakov, Shmuel
PY - 2012/12/1
Y1 - 2012/12/1
N2 - The contribution of the rise and fall times of switches to the losses of Switched Capacitors Converters was evaluated by an approximate analysis applying the equivalent resistance concept. It was found that switch turn-on and turn-off durations increase the equivalent resistance of the converter and, consequently, the losses, except in the case of complete charge/discharge of the flying capacitors within the switching phase. Loss increase is related to the fact that during the current rise/fall state, the instantaneous losses are much higher than when the switch is in a constant 'on' state. Theoretical predictions were validated by full circuit simulations and experimental results. The present study integrates the switching losses into the generic equivalent resistance loss model, enabling the calculation and/or simulation of the total losses in switched capacitor converters.
AB - The contribution of the rise and fall times of switches to the losses of Switched Capacitors Converters was evaluated by an approximate analysis applying the equivalent resistance concept. It was found that switch turn-on and turn-off durations increase the equivalent resistance of the converter and, consequently, the losses, except in the case of complete charge/discharge of the flying capacitors within the switching phase. Loss increase is related to the fact that during the current rise/fall state, the instantaneous losses are much higher than when the switch is in a constant 'on' state. Theoretical predictions were validated by full circuit simulations and experimental results. The present study integrates the switching losses into the generic equivalent resistance loss model, enabling the calculation and/or simulation of the total losses in switched capacitor converters.
KW - DC-DC power converters
KW - modeling
KW - switched capacitor converter
KW - switching losses
UR - http://www.scopus.com/inward/record.url?scp=84871961847&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2012.6377071
DO - 10.1109/EEEI.2012.6377071
M3 - Conference contribution
AN - SCOPUS:84871961847
SN - 9781467346801
T3 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
BT - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
T2 - 2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012
Y2 - 14 November 2012 through 17 November 2012
ER -