SLUUC91 EVM User's guide

SLUUC91B may 2020 – august 2023 TPS23730

6.2 Soft-Stop Response

The TPS23730 has a soft stop feature that enables a controlled discharge of the output bulk capacitance. Please refer to SLVAEY9 for more information. Figure 6-3 and Figure 6-4 show the 5-V output waveform after the input voltage is removed.

Figure 6-3 Shutdown Waveform 10-A Load

Figure 6-4 Shutdown Waveform 0-A Load

Figure 6-5 shows the primary MOSFET Q11 during shutdown.

Figure 6-5 Shutdown Waveform Primary MOSFET with 10-A Load

Figure 6-6 Shutdown Waveform Primary MOSFET with 0-A Load

Figure 6-7 and Figure 6-8 show the primary sync MOSFET Q10 during shutdown.

Figure 6-7 Shutdown Waveform Synchronous MOSFET with 10-A Load

Figure 6-8 Shutdown Waveform Synchronous MOSFET with 0-A Load

Figure 6-9 and Figure 6-10 show the secondary series MOSFET Q8 during shutdown.

Figure 6-9 Shutdown Waveform Secondary Series MOSFET 10-A Load

Figure 6-10 Shutdown Waveform Secondary Series MOSFET 0-A Load

Figure 6-11 and Figure 6-12 show the secondary parallel MOSFET Q6 during shutdown.

Figure 6-11 Shutdown Waveform Secondary Parallel MOSFET with 10-A Load

Figure 6-12 Shutdown Waveform Secondary Parallel MOSFET 0-A Load