AN4007

List of figures

Doc ID 022455 Rev 2

3/33

List of figures

Figure 1.

Demonstration board image: power supply board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2.

Electrical schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3.

Dimensional drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4.

Line and load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5.

Efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6.

No load consumption vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7.

Light load consumption at different output power without brownout . . . . . . . . . . . . . . . . . . 10

Figure 8.

Light load consumption at different output power with brownout . . . . . . . . . . . . . . . . . . . . 11

Figure 9.

Drain current and voltage at full load 85 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 10.

Drain current and voltage at full load 115 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 11.

Drain current and voltage at full load 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 12.

Drain current and voltage at full load 264 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 13.

Figure 14.

Figure 15.

Output voltage ripple during burst mode and 115 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 16.

Output voltage ripple during burst mode and 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 17.

Dynamic step load: 0 to 50% load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 18.

Dynamic step load: 50 to 100% load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 19.

Dynamic step load: 0 to 100% load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 20.

Soft-start feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 21.

Overload event: OLP triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 22.

Overload event: continuous overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 23.

Overvoltage event: OVP triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 24.

Overvoltage event: OVP triggering (magnification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 25.

2nd level OCP: protection tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 26.

2nd level OCP: steady-state operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 27.

Brownout protection: converter’s power-down phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 28.

Brownout protection: converter’s wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 29.

Brownout protection: converter’s wake-up (magnification) . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 30.

CE average measurement at 115 VAC and full load: average measurement . . . . . . . . . . . 27

Figure 31.

CE average measurement at 230 VAC and full load: average measurement . . . . . . . . . . . 28

Figure 32.

CE average measurement at 115 VAC and full load: peak measurement . . . . . . . . . . . . . 28

Figure 33.

CE average measurement at 230 VAC and full load: peak measurement . . . . . . . . . . . . . 29

Figure 34.

Figure 35.