Other Parts Discussed in Thread: TPS62142,
Hello,
I am actually trying to design a power supply board to use with a launchpad F28069M board. My problem is that i intended to use a 9.9V LiFePo battery to power the complete system. The board needs to provide 3.3V for the MCU board with an extra logic board (max 1.0A load) and 12V to a board that drives 2 DC Motors (max 6.5A load). Using the Webench tool i designed 2 separate dc/dc converters with the components listed on the title of this thread. After soldering all of the components to the board and double checking that there was no short circuits, i connected the battery to the board and the TPS61088 was instantly damaged, the TPS62142 didn't seemed to have any damage. I, then, proceeded to desolder the damaged IC and tried again but the buck converter wasn't giving the expected 3.3V at the output but ~0.226V. Any ideas on what the problem could be? The board i designed is attached to this post. Is there something wrong with my design causing some sort of problems? Thanks in advance!
Regards,
Emmanuel
