Ficha De Dados (STEVAL-ISA115V1)índice analíticoFigure 1. STEVAL- ISA115V1 demonstration board11 Adapter features4Table 1. Electrical specifications42 Circuit description4Figure 2. Application schematic53 Bill of material6Table 2. Bill of material64 Layout7Figure 3. Layout (top)7Figure 4. Layout (bottom)75 Testing the board85.1 Typical waveforms8Figure 5. Waveforms at VIN = 115 VAC, full load8Figure 6. Waveforms at VIN = 230VAC, full load8Figure 7. Waveforms at VIN = 80 VAC, full load8Figure 8. Waveforms at VIN = 265 VAC, full load85.2 Line/load regulation and output voltage ripple9Figure 9. Line regulation9Figure 10. Load regulation9Figure 11. Output voltage ripple at 115 VAC, full load9Figure 12. Output voltage ripple 230 VAC, full load95.3 Burst mode and output voltage ripple10Figure 13. Output voltage ripple at 115 VAC, no load10Figure 14. Output voltage ripple at 230 VAC, no load105.4 Efficiency10Figure 15. Active mode efficiency vs. VIN and comparison with CoC4 and DOE115.5 Light load performance11Table 3. No load input power11Table 4. Energy consumption criteria for no load12Figure 16. PIN vs. VIN @ no load and light load12Figure 17. Efficiency @ PIN = 1 W13Figure 18. PIN @ POUT = 0.25 W136 Functional check146.1 Startup14Figure 19. Startup at VIN = 115 VAC, full load14Figure 20. Startup at VIN = 115 VAC, full load, zoom14Figure 21. Startup at VIN = 230 VAC, full load14Figure 22. Startup at VIN = 230 VAC, full load, zoom146.2 Overload protection14Figure 23. Output short-circuit applied: OLP tripping15Figure 24. Output short-circuit maintained: OLP steady-state15Figure 25. Output short-circuit maintained: OLP steady-state (zoom)15Figure 26. Output short-circuit removal and converter restart156.3 Feedback loop failure protection15Figure 27. Feedback loop failure protection: tripping16Figure 28. Feedback loop failure protection: steady-state16Figure 29. Feedback loop failure protection: steady-state zoom16Figure 30. Feedback loop failure protection: converter restart167 Feedback loop calculation guidelines177.1 Transfer function17Figure 31. Control loop block diagram177.2 Compensation procedure for a DCM buck198 Thermal measurements20Figure 32. Thermal measurement @ VIN = 80 VAC, full load (130 mA) Rbl = 8.2 kohm20Figure 33. Thermal measurement @ VIN = 115 VAC, full load (130 mA) Rbl = 8.2 kohm21Figure 34. Thermal measurement @ VIN = 230 VAC, full load (130 mA) Rbl = 8.2 kohm21Figure 35. Thermal measurement @ VIN = 265 VAC, full load (130 mA) Rbl = 8.2 kohm229 EMI measurements23Figure 36. Average measurement at full load, 115 VAC23Figure 37. Average measurement at full load, 230 VAC23Appendix A Test equipment and measurement of efficiency and light load performance24Figure 38. Connections of the UUT to the wattmeter for power measurements24A.1 Measuring input power24Figure 39. Switch in position 1 - setting for standby measurements25Figure 40. Switch in position 2 - setting for efficiency measurements2510 References27Revision history28Table 5. Document revision history28Tamanho: 3 MBPáginas: 29Language: EnglishAbrir o manual
