SLVUAH4A August 2015 – October 2021 TPS54334
2.10 Powering Down
Figure 2-13 and Figure 2-14 show the start-up waveforms for the TPS54334EVM-722. In Figure 2-13, the output voltage ramps down as soon as the input voltage falls below the UVLO stop threshold as set by the R1 and R2 resistor divider network. In Figure 2-14, the output is inhibited by using a jumper at JP1 to tie EN to GND. The input voltage for these plots is 12 V and the load is 2.2 Ω.
Figure 2-13 TPS54334EVM-722 Shutdown Relative to VIN
Figure 2-14 TPS54334EVM-722 Shutdown Relative to EN