TIDUEX8 Design guide

TIDUEX8 September 2020

3.2.2.7 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 3-14 and Figure 3-15 show the 5-V output waveform after the input voltage is removed.

Figure 3-14 Shutdown Waveform 10-A Load

Figure 3-15 Shutdown Waveform 0-A Load

Figure 3-16 and Figure 3-17show the primary MOSFET Q11 during shutdown

Figure 3-16 Shutdown Waveform Primary MOSFET with 10-A Load

Figure 3-17 Shutdown Waveform Primary MOSFET with 0-A Load

Figure 3-18 and Figure 3-19 show the primary sync MOSFET Q10 during shutdown

Figure 3-18 Shutdown Waveform Synchronous MOSFET with 10-A Load

Figure 3-19 Shutdown Waveform Synchronous MOSFET with 0-A Load

Figure 3-20 and Figure 3-21 show the secondary series MOSFET Q8 during shutdown

Figure 3-20 Shutdown Waveform Secondary Series MOSFET 10-A Load

Figure 3-21 Shutdown Waveform Secondary Series MOSFET 0-A Load

Figure 3-22 and Figure 3-23 show the secondary parallel MOSFET Q6 during shutdown.

Figure 3-22 Shutdown Waveform Secondary Parallel MOSFET with 10-A Load

Figure 3-23 Shutdown Waveform Secondary Parallel MOSFET 0-A Load