Tridonic Gmbh Co. Kg

Peter Lampert

Frank Lochmann

Christoph Vonach

Andre Mitterbacher

Hans Auer

Rainer Troppacher

Dietmar Klien

For the purpose of power factor correction, an inductance () is supplied with an input voltage (Vin), wherein a controllable switching means () that is coupled to the inductance () is actuated in order to selectively charge and discharge the inductance (). A control device () for actuating the switching means () is designed such that it actuates the switching means () selectively on the basis of one of a plurality of modes of operation. In a first mode of operation, a switch-on time is stipulated for the switching means () on the basis of a minimum waiting time and on the basis of a voltage that drops across the switching means ().

Method for controlling a power factor correction circuit, power factor correction circuit and operating device for an illuminant

A power factor correction circuit () comprises an input for receiving an input voltage (U), an inductance () coupled to the input, a switching means () that is coupled to the inductance () and that is controllable in order to either charge or discharge the inductance (), and a control device (). The control device () is set up in order to produce a control signal (Ctrl) for controlling the switching means () on the basis of a parameter value. The control device () is set up in order to ascertain the parameter value on the basis of an arithmetic sign of a time derivation for the input voltage (U).

Power factor correction circuit, operating device for a light-emitting means and method for controlling a power factor correction circuit

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Feldkirch, Austria

Peter Lampert