Experimental results

AN3040

16/27

Doc ID 16181 Rev 2

At the same time the TCH pin goes down to ground. During this phase, the oscillator

generates a reduction of the switching frequency; when the voltage at the EOI pin exceeds

1.9 V, the chip enters run mode.

Figure 5.

L6585DE startup sequence

Figure 6

shows the lamp ignition phase, across and through which the voltage and current

increase linearly.

Figure 6.

One lamp ignition phase

Figure 7.

Lamp voltage and current in run mode condition

AM05154v1