Other Parts Discussed in Thread: TPS62161,
Hello,
I have a 3.3V TPS62162 voltage regulator. It is sequenced by having a 1.8V TPS62161 voltage regulator connected to the Enable Pin. The power sequencing works correctly on power up. However, I now desire to have the 3.3 V TPS62162 regulator output drop before the 1.8V TPS62161 regulator's power ramps down. Changing the output capacitor values on the regulators proved to be unsuccessful, as I believe that as long as the 3.3V regulator is connected by the EN pin to the 1.8V, it will inevitably ramp down after the 1.8V regulator.
Thus, I want to disconnect the EN pin on the TPS62162; however, does it have to be pulled down, or can it be left at no connect?
I have prebuilt boards and I want to make minimal changes to get the desired result. Referring to the attached schematic, do you have any other recommendations to get the 3.3V regulator power output to ramp down faster on power down before the 1.8V output ?
Thank you!
