Datasheet

DocID024275 Rev 2 3/29
AN4260 List of figures
List of figures
Figure 1. STEVAL- ISA115V1 demonstration board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Layout (top). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Layout (bottom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Waveforms at V
IN
= 115 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Waveforms at V
IN
= 230V
AC
, full load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7. Waveforms at V
IN
= 80 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. Waveforms at V
IN
= 265 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9. Line regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10. Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11. Output voltage ripple at 115 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 12. Output voltage ripple 230 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 13. Output voltage ripple at 115 V
AC
, no load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Output voltage ripple at 230 V
AC
, no load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 15. Active mode efficiency vs. V
IN
and comparison with CoC4 and DOE . . . . . . . . . . . . . . . . 11
Figure 16. P
IN
vs. V
IN
@ no load and light load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 17. Efficiency @ P
IN
= 1 W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 18. P
IN
@ P
OUT
= 0.25 W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 19. Startup at V
IN
= 115 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 20. Startup at V
IN
= 115 V
AC
, full load, zoom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 21. Startup at V
IN
= 230 V
AC
, full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 22. Startup at V
IN
= 230 V
AC
, full load, zoom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 23. Output short-circuit applied: OLP tripping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 24. Output short-circuit maintained: OLP steady-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 25. Output short-circuit maintained: OLP steady-state (zoom). . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 26. Output short-circuit removal and converter restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 27. Feedback loop failure protection: tripping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 28. Feedback loop failure protection: steady-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 29. Feedback loop failure protection: steady-state zoom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 30. Feedback loop failure protection: converter restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 31. Control loop block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 32. Thermal measurement @ V
IN
= 80 V
AC
, full load (130 mA) Rbl = 8.2 kohm . . . . . . . . . . . 20
Figure 33. Thermal measurement @ V
IN
= 115 V
AC
, full load (130 mA) Rbl = 8.2 kohm . . . . . . . . . . 21
Figure 34. Thermal measurement @ V
IN
= 230 V
AC
, full load (130 mA) Rbl = 8.2 kohm . . . . . . . . . . 21
Figure 35. Thermal measurement @ V
IN
= 265 V
AC
, full load (130 mA) Rbl = 8.2 kohm . . . . . . . . . . 22
Figure 36. Average measurement at full load, 115 V
AC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 37. Average measurement at full load, 230 V
AC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 38. Connections of the UUT to the wattmeter for power measurements . . . . . . . . . . . . . . . . . 24
Figure 39. Switch in position 1 - setting for standby measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 40. Switch in position 2 - setting for efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . 25