Dear all:
Recently, we have a complicate design for signal processing, and use multiply TPS56221 for dc-dc convert. As the integrated VLSIs have sequence requirement, we use one TPS3808 as a sequencer for three TPS56221, and put three EN/SS connected together, as illustrated in the following figure.
We are wondering if this is a proper design for TPS56221, since we find the TPS56221 has a calibration procedure during startup. Really hope experts can explain this, and we are so appreciate for that.
