Texas Instruments TPS549D22, User Manual, Page: 2 / 48

Figure 11-5. PMBus V
OUT
Step-Down = 1.2 V to 0.6 V at 0 A................................................................................................... 15
Figure 11-6. PMBus V
OUT
Step-Up = 0.6 V to 1.2 V at 40 A...................................................................................................... 16
Figure 11-7. PMBus V
OUT
Step-Down = 1.2 V to 0.6 V at 40 A................................................................................................. 17
Figure 11-8. PMBUS Multiple Commands................................................................................................................................. 18
Figure 11-9. Transient Response of 1-V Output at 12 V
IN
, Transient is 8 A to 32 A, 2.5 A/µs................................................... 19
Figure 11-10. Output Ripple and SW Node of 1-V Output at 12 V
IN
, 0-A Output...................................................................... 19
Figure 11-11. Output Ripple and SW Node of 1-V Output at 12 V
IN
, 40-A Output..................................................................... 20
Figure 11-12. Start up from Control, 1-V Output at 12 V
IN
, 40-A Output................................................................................... 20
Figure 11-13. 0.5-V Pre-bias start up from Control, 1-V Output at 12 V
IN
, 40-A Output............................................................ 21
Figure 11-14. Soft Stop from Control, 1-V Output at 12 V
IN
, 40-A Output................................................................................. 21
Figure 11-15. Thermal Image at 1-V Output at 12 V
IN
, 40-A Output.......................................................................................... 22
Figure 12-1. First Window at Fusion Launch............................................................................................................................. 23
Figure 12-2. Scan Finds Device Successfully........................................................................................................................... 23
Figure 12-3. Software Launch Continued.................................................................................................................................. 24
Figure 12-4. Software Launch Continued.................................................................................................................................. 24
Figure 12-5. First Screen After Successful Launch Configure: Limits and On/Off..................................................................... 25
Figure 12-6. Configure: Frequency- FS Configuration Pop-up.................................................................................................. 26
Figure 12-7. Configure: Frequency- FS Config Pop-Up with Change....................................................................................... 27
Figure 12-8. Configure: Store Config to NVM ........................................................................................................................... 28
Figure 12-9. Change View Screen to Monitor Screen............................................................................................................... 29
Figure 12-10. System Dashboard.............................................................................................................................................. 30
Figure 12-11. Status Screen...................................................................................................................................................... 31
Figure 12-12. Store Configuration To Memory........................................................................................................................... 32
Figure 12-13. PMBus Logging................................................................................................................................................... 33
Figure 12-14. PMBus Log Details.............................................................................................................................................. 34
Figure 13-1. PWR-784EVM Top Layer Assembly Drawing (Top View)...................................................................................... 35
Figure 13-2. PWR-784EVM Top Solder Mask (Top View)......................................................................................................... 35
Figure 13-3. PWR-784EVM Top Layer (Top View).................................................................................................................... 36
Figure 13-4. PWR-784EVM Inner Layer 1 (Top View)............................................................................................................... 36
Figure 13-5. PWR-784EVM Inner Layer 2 (Top View)............................................................................................................... 37
Figure 13-6. PWR-784EVM Inner Layer 3 (Top View)............................................................................................................... 37
Figure 13-7. PWR-784EVM Inner Layer 4 (Top View)............................................................................................................... 38
Figure 13-8. PWR-784EVM Bottom Layer (Top View)............................................................................................................... 38
Figure 13-9. PWR-784EVM Bottom Solder Mask (Top View).................................................................................................... 39
Figure 13-10. PWR-784EVM Bottom Overlay Layer (Top View)............................................................................................... 39
List of Tables
Table 3-1. PWR-784EVM Electrical Performance Specifications................................................................................................ 4
Table 8-1. Test Point Functions.................................................................................................................................................. 10
Table 9-1. Key Factory Configuration Parameters..................................................................................................................... 11
Table 10-1. List of Test Points for Line and Load Measurements.............................................................................................. 12
Table 10-2. List of Test Points for Efficiency Measurements...................................................................................................... 12
Table 14-1. PWR784 List of Materials....................................................................................................................................... 40
Trademarks
PMBus ™ is a trademark of SMIF, Inc..
All trademarks are the property of their respective owners.
Trademarks www.ti.com
2 TPS549D22 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBG4A – JULY 2016 – REVISED AUGUST 2021
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