AN2690

List of figures

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List of figures

Figure 1.

L6566A and L6563-75W adapter demonstration board (EVL6566A-75WADP) . . . . . . . . . . 1

Figure 2.

Electrical schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3.

EVL6566A-75WADP overall efficiency measurements vs. load . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4.

EVL6566A-75WADP compliance to EN61000-3-2 standard at 230 Vac - 50 Hz, full load 10

Figure 5.

EVL6566A-75WADP compliance to JEIDA-MITI standard at100 Vac - 50 Hz, full load . . 10

Figure 6.

EVL6566-75WADP flyback stage waveforms at 115 V - 60 Hz - full load . . . . . . . . . . . . . 11

Figure 7.

EVL6566-75WADP flyback stage waveforms at 230 V - 50 Hz - full load . . . . . . . . . . . . . 11

Figure 8.

EVL6566-75WADP no-load operation waveforms at 90 V-60 Hz . . . . . . . . . . . . . . . . . . . 12

Figure 9.

EVL6566-75WADP no-load operation waveforms at 265 V-50 Hz . . . . . . . . . . . . . . . . . . 12

Figure 10.

Figure 11.

Figure 12.

Frequency foldback circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 13.

EVL6566A-75WADP o/p power vs. input power at light load . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 14.

EVL6566A-75WADP light-load efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 15.

Short circuit at full load and 230 Vac- 50 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 16.

Figure 17.

Figure 18.

Figure 19.

Figure 20.

Flyback open loop - restart option 230 Vac 50 Hz - half load . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 21.

Figure 22.

Figure 23.

CE peak measure at 115 Vac and full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 24.

CE peak measure at 230 Vac and full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 25.

PFC coil electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 26.

PFC coil mechanical aspect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 27.

Transformer electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 28.

Transformer winding diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 29.

Transformer mechanical aspect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30