| 摘要 |
A lamp driver having two independently operating half-bridges integrated as a down-converter ( 1 ) and one as an alternator ( 2 ). Ensures that current control and inversion can be performed in a single stage, thereby providing synchronization at commutation moment. May comprise detection means ( 15, 18 ) for detecting a defined state of the down-converter ( 1 ), in which case commutation is only carried out if it has been requested and the defined state has been detected. A delay circuit ( 16 ) may ensure that commutation is always carried out if requested, even if the defined state is not detected.
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