Texas Instruments TPS548A28, User Manual, Page: 12 / 25

Test Setup and Results
www.ti.com
12 SLVUBO0A – March 2020 – Revised May 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
Using the TPS54JA20EVM-023 12-A, Buck Converter Evaluation Module
2.8 Powering Up
Figure 14 shows the start-up waveforms for the TPS54JA20EVM. In Figure 14 , the start-up sequence
begins as soon as the EN voltage is increased above the enable-threshold voltage, and the output voltage
ramps up to the externally set value of 2.5 V. The input voltage for these plots is 12 V.
Figure 14. TPS54JA20 Enable Start-Up, 12A Load
2.8.1 Powering Down
Figure 15 shows the TPS54JA20EVM shutdown. The input voltage for these plots is 12 V.
Figure 15. TPS54JA20 EN Shutdown, 12A Load