Hi
We made a board with the adum6421.
I remove R306
Primary voltage : VDD1 = VDDP = 3.3V
PDIS = 0V
Secondary voltage : VSEL tied to GNDiso => expect to have 3.3V
Unfortunately the output is at 0V.
Thanks for your feedback

| SLA Status | Assignee | Support Status |
|---|---|---|
| SLA Closed. Missed after 265 hours |
TommyMoran |
Awaiting Customer Response |
ADUM6421A
Recommended for New Designs
The ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A1 are quad-channel digital isolators with an isoPower®, integrated, isolated dc-to-dc converter....
Datasheet
ADUM6421A on Analog.com
Hi
We made a board with the adum6421.
I remove R306
Primary voltage : VDD1 = VDDP = 3.3V
PDIS = 0V
Secondary voltage : VSEL tied to GNDiso => expect to have 3.3V
Unfortunately the output is at 0V.
Thanks for your feedback

Hi Ajas,
For 3.3V Vddp output, you must use a Z3 version of the device. Please reference the ordering guide in the datasheet for 3.3V Vddp options.
Best Regards,
Tommy