| abstract |
The invention proposes a driving circuit for provision of an operating current for at least one lighting means, such as e.g. a light emitting diode, the driving circuit comprising a switched converter (130) having a switch (SI) controlled by a control circuitry, wherein a choke (LI) is charged when the control circuitry control the switch in its conducting state and the choke is de- charged when the control circuits controls the switch in its non-conducting state, wherein by supplying an external signal or an internal feedback signal to the control circuitry, the control circuitry is designed to adapt the clocking of the switch in order to adapt the operating mode of the switched converter, to either of a continuous, borderline (transition, critical) and discontinuous conduction mode, CCM, BCM or DCM. |