12documents trouvés
Adaptive digital MPPT control for photovoltaic applications
C.CABAL, C.ALONSO, A.CID-PASTOR, B.ESTIBALS, L.SEGUIER, R.LEYVA, G.SCHWEITZ, J.ALZIEU
ISGE, Rovira, 2I, EDF
Manifestation avec acte : IEEE International Symposium on Industrial Electronics (ISIE 2007), , Vigo (Espagne), 4-7 Juin 2007, 6p. , N° 07270
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110565Practical implementation of a high-frequency current sensing technique for VRM
A.SIMON, S.PETIBON, C.ALONSO, B.ESTIBALS, L.SEGUIER, J.L.CHAPTAL
ISGE, 2I, FREESCALE
Manifestation avec acte : ISIE 2007. IEEE International Symposium on Industrial Electronics, Vigo (Espagne), 4-7 Juin 2007, pp.764-769 , N° 06846
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Abstract
Inductor current tracking in high-frequency DC/DC converters is not effortless, especially when high current and low voltages loads are demanded. This paper proposes a simple technique to obtain a good resolution in the inductor current measurement obtaining an equivalent voltage image which can be used for a high-frequency PWM controller. This strategy of measurements is generic and it has been validated by simulations. Our experimental results are obtained with very low output voltages and several loads between 10mA to high currents covering the needs of portable and embedded VRM applications.