DC-DC Conversion Circuit Without Isolation

Published:2011/7/11 22:55:00 Author:Michel | Keyword: DC-DC Conversion Circuit | From:SeekIC

The converter composed of one job switches and L, D, C without input and output voltage isolation and it has three basic forms,namely,buck converter,boost converter and buck-boost converter.And its circuit principle is showed as the aboved pictures. First,Buck ConverterAs shown in figure (a), 9 is to reduce output ripple, it accesses inductance and capacitance C L on the output side.VD is fly-wheel diode.Output voltage's average value,Vo of buck converter is always lower than Vin. Whether the current iL in inductance is successive depends on switch frequency,filtering inductance L and capacitance C parameter value.



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