TPS54478 is the recommended alternative device to TPS54380. Please refer to the TPS54478EVM for new device evaluation.
The TPS54380EVM-001 Evaluation Module allows the designer to evaluate the TPS54380 for use in a multiple voltage sequencing scheme. The 3.3/5 V input, 3 A (TPS54380) switching regulator is paired with a power distribution switch (TPS2013)to demonstrate power up and down sequencing of core and I/O voltages. The resistor divider network of the TRACKIN pin can be easily modified to adjust which output voltage powers up first. In lieu of the power distribution switch, any DC/DC converter can be used to provide the master voltage signal into the TRACKIN pin of multiple TPS54x80's to sequence more than two core voltages.
Please see the TPS54380EVM-001 User's Guide (SLVU087) document for more information.