Patent ID: 7880396

Claim:
A lamp driver circuit comprising; a power stage circuit including a flyback converter to output a direct current signal to a bridge circuit, the bridge circuit to reconstruct the direct current signal to an alternating current signal; a control circuit coupled with the power stage circuit and the bridge circuit, the control circuit to receive the direct current signal from the power stage circuit and to provide a frequency control signal to the bridge circuit; and a lamp igniter circuit comprising at least one charge pump and being coupled with the bridge circuit, wherein in response to the frequency control signal being provided to the bridge circuit, the bridge circuit is configured to increase the voltage of the alternating current signal provided to the lamp igniter circuit to power the lamp igniter circuit, wherein the bridge circuit includes 4 switches arranged in 2 alternate pairs and configured to reconstruct the direct current signal to an alternating current signal, wherein each switch has a capacitor coupled across its terminals.