8. Go to the Sequence Config tab. In the Pins mapping section, change the pin 19's (EN1) Power Up sequence

from 1st to 4th sequence. Now, the Enable 1 signal is part of the 4th power-up sequence. Hence, delaying

the signal by about 2 ms from Enable 2 signal (which is still part of the first power-up sequence).

Figure 4-20. TPS38700 GUI Window - Sequence Config Tab

9. Change the trigger in the oscilloscope from channel 1 to channel 3 to get the trigger from ACT pin.

10. Set the Function Generator to create a 3.3 V pulse waveform. Turn-on the output from the Function

Generator connected to the ACT pin to trigger the power-up sequence.

11. The output at the oscilloscope should look like the Figure 4-21 where green waveform is the pulse to the

ACT pin (TP6), red waveform is Enable 2 signal and blue waveform is the Enable 1 Signal.

Figure 4-21. Expected Output Signal

5 Revision History

Changes from Revision * (July 2021) to Revision A (April 2022)

Page

• Edited the TPS38700Q1EVM Schematic to reflect the new TPS38700-Q1 package pinout............................. 6

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Revision History

SNVU771A – JULY 2021 – REVISED APRIL 2022

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