Activation circuit of a resonance converter
AssigneeSiemens Aktiengesellschaft
InventorsKarl Benesch, Janusz Dyszewski, Stefan Reschenauer
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Abstract
An activation circuit for activating a power bridge circuit of a resonance converter, including an inductive activation transformer that transfers a pulsed control signal generated via a CMOS driver to the power bridge circuit, wherein a clamping circuit is arranged at the output of each CMOS driver, where the clamping circuit clamps a primary winding of the activation transformer to a ground potential during the dead time between two pulses of the pulsed control signal such that overvoltages, which otherwise arise when switching the activation transformer inductance, are thus clamped during a dead time and a circuit breaker switches off securely.
Claims12
An activation circuit for activating a power bridge circuit of a resonance converter, comprising:
- a plurality of CMOS drivers;
- an inductive activation transformer which transfers a pulsed control signal generated via the plurality of CMOS drivers to the power bridge circuit;
- a clamping circuit arranged at an output of each CMOS driver of said plurality of CMOS drivers, said clamping circuit clamping a primary winding of the inductive activation transformer to a ground potential during a dead time between two pulses of the pulsed control signal.
Dependencies are inferred from the claim text.