摘要:
An LLC resonant converter (19) for an illuminant (5) has a primary-side circuit (19) and a secondary-side circuit (30) galvanically isolated therefrom. When the LLC resonant converter (19) is in operation, a first switch (21) and a second switch (22) of a half-bridge circuit to which an LLC resonant circuit (25-27) of the primary-side circuit (19) is connected are switched cyclically. A voltage (V_sns) is detected in the primary-side circuit (19). The voltage (V_sns) detected in the primary-side circuit (19) is processed in order to obtain information about an output voltage of the secondary-side circuit (30).
摘要:
Electronic ballasts and buck-boost DC-DC converters therefore are presented with a buck converter (210) with two switching devices connected with two capacitances (C1, C2) and two diodes (D1, D2) to limit the individual switching device voltages to around half the converter DC input voltage or less.