NEW DATABASE - 350 MILLION DATASHEETS FROM 8500 MANUFACTURERS
NEW DATABASE - 350 MILLION DATASHEETS FROM 8500 MANUFACTURERS
AN2426 STEVAL-ISA023V1 90VAC 230VAC 265VAC EN55022 F/400V 53DIP F/35V STPS1150 - Datasheet Archive
Application note Auxiliary power supply with VIPer53EDIP 1 Introduction This document describes the reference design of the 25W
AN2426 AN2426 Application note Auxiliary power supply with VIPer53EDIP 1 Introduction This document describes the reference design of the 25W Switch Mode Power Supply which is dedicated to industrial or white goods applications. The board accepts wide range input voltages (90 to 265Vrms) and delivers 2 or 3 output voltages depending on the version. Two types of power supply are available: negative output or positive output voltage. The actual version depends the way the components are assembled on the secondary side and on the configuration of jumpers. On the primary side, the PCB and transformer are the same for both versions. More information is available in Chapter 3. The Switch mode power supply is based on the VIPer53E. The VIPer53E combines in the same package an enhanced current mode PWM controller with a high voltage MDMesh Power Mosfet. High efficiency and low standby consumption are the main characteristics of this board. Such features, coupled with minimal part requirements and global low cost in addition to, makes it an ideal solution for powering industrial or consumer equipment, meeting worldwide standards. Figure 1. January 2007 STEVAL-ISA023V1 STEVAL-ISA023V1 demo board, described in this application note Rev 1 1/45 www.st.com Contents AN2426 AN2426 - Application note Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Main characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Cross regulation and stand by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Functional checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.1 Stand by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2 Short-circuit tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.3 Start-up behavior at full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.4 Wake-up time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.5 Power down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.6 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.7 Output ripple voltage at full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Conducted noise measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7 Part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 8 PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 9 Transformer specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 9.1 9.2 10 2/45 Electrical characteristics: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 AN2426 AN2426 - Application note List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Output voltages, positive version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Output voltages, negative version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Output voltages at VIN 90VAC 90VAC, 12V / 0.8A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Output voltages at VIN 230VAC 230VAC, 12V / 0.8A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Output voltages at VIN 90VAC 90VAC, 5V / 3A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output voltages at VIN 230VAC 230VAC, 5V / 3A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output voltages at VIN 90VAC 90VAC, 12V / 0.8A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output voltages at VIN 230VAC 230VAC, 12V / 0.8A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output voltages at VIN 90VAC 90VAC, 5V / 3A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Output voltages at VIN 230VAC 230VAC, 5V / 3A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Output voltages with open feedback loop - positive version of power supply. . . . . . . . . . . 29 Output voltages with open feedback loop - negative version of power supply . . . . . . . . . . 29 Bill of material (Part 1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Bill of material (Part 2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Bill of material (Part 3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Winding characteristics of transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 3/45 List of figures AN2426 AN2426 - Application note List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. 4/45 STEVAL-ISA023V1 STEVAL-ISA023V1 demo board, described in this application note . . . . . . . . . . . . . . . . . . 1 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Drain voltage and current at VIN = 90VAC 90VAC - 50Hz and full load . . . . . . . . . . . . . . . . . . . . . . 9 Drain voltage and current at VIN = 230VAC 230VAC - 50Hz and full load . . . . . . . . . . . . . . . . . . . . 10 Drain voltage and current at VIN = 265VAC 265VAC - 50Hz and full load . . . . . . . . . . . . . . . . . . . . 10 Diodes voltages at VIN = 265VAC 265VAC - 50Hz and full load. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Drain-source and V DD voltage and current at VIN = 90VAC 90VAC - 50Hz and full load . . . . . . . 12 Drain-source and V DD voltage and current at VIN = 265VAC 265VAC - 50Hz and full load . . . . . . 12 Power consumption during stand by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Device voltages in stand by operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Short circuit on 5V at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Short circuit on 5V at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Short circuit on 5V at VIN = 265VAC 265VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Short circuit on 12V at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Short circuit on 12V at VIN = 230VAC 230VAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Short circuit on 12V at VIN = 265VAC 265VAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Start-up, positive version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . . . . . 21 Start-up, positive version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . . . . . . 22 Start-up, negative version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . . . . . 22 Start-up, negative version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . . . . . . 23 Wake-up time, positive version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . 24 Wake-up time, positive version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . 24 Wake-up time, negative version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . 25 Wake-up time, negative version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . 25 Power down, positive version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . . 26 Power down, positive version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . . 27 Power down, negative version of power supply at VIN = 90VAC 90VAC . . . . . . . . . . . . . . . . . . . . 27 Power down, negative version of power supply at VIN = 230VAC 230VAC . . . . . . . . . . . . . . . . . . . 28 Ripple voltage at switching frequency, positive version of power supply . . . . . . . . . . . . . . 30 Ripple voltage at switching frequency, negative version of power supply . . . . . . . . . . . . . 30 Conducted noise measurements Phase A - positive version of power supply, peak detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Conducted noise measurements Phase B - positive version of power supply, peak detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Conducted noise measurements Phase A - positive version of power supply, AVG detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Conducted noise measurements Phase B - positive version of power supply, AVG detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Conducted noise measurements Phase A - negative version of power supply, peak detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Conducted noise measurements Phase B - negative version of power supply, peak detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Conducted noise measurements Phase A - negative version of power supply, AVG detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Conducted noise measurements Phase B - negative version of power supply, AVG detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Silk screen - top side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Silk screen - bottom side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 AN2426 AN2426 - Application note Figure 41. Figure 42. Figure 43. Figure 44. List of figures Copper tracks - bottom side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Transformer layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Dimension and appearance of transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Winding position of transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5/45 Main characteristics 2 AN2426 AN2426 - Application note Main characteristics The main characteristics of the SMPS are listed below: Input voltage: Vin: 90-265Vrms Frequency 45-66Hz Output voltages are given in Table 1, and 2: Standby consumption: