Post Go back to editing

Power rails

Thread Summary

The user inquires about power sequencing requirements for the ADSP-21565 with 1.8V, 1.1V, and 3.3V rails. The final answer indicates that active sequencing is necessary to maintain the delta between the 1.8V and 3.3V rails during power up and power down. The user requests a reference design or application note for the recommended active sequencing approach, and is directed to continue the discussion through a private support ticket (CS-578559-R5N1N7).
AI Generated Content
Category: Hardware

"I'm designing a board around the ADSP-21565 with three power rails — 3.3V (ADP7104), 1.8V (AP2112K), and 1.1V (TPS62130A). The 1.8V feeds VDD_REF and VDD_ANA, the 1.1V feeds VDD_INT, and 3.3V feeds VDD_EXT. Does the ADSP-21565 have any hard power sequencing requirements between these rails, and if so, does a passive RC-based sequencing approach satisfy them or is active sequencing required?"  

regards,

Mark.

Before You Switch


Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.