Opal Kelly issues this PCN to existing customers of the listed product(s) to inform them of changes and/or updates that may affect current inventory or current and future applications of the product.

Issue Date

14 September 2022

Affected Parts

The following items are affected by this PCN:

  1. ZEM4310

PCB revisions DXX and later are affected by this PCN. Revision BXX (20121218) is not affected by this change. The PCB revision is indicated in silkscreen in the location shown below

Revision BXX (20121218) is not affected.

Revisions DXX and later are affected.

Reason for the Change

The Intel Enpirion family of power modules has been discontinued by the manufacturer. Enpirion regulators are used on the ZEM4310 to generate the on-board 1.2V, 3.3V and VIO supplies. Opal Kelly has identified suitable replacement parts for these supplies.

Description of the Change

The Enpirion devices on the ZEM4310 are being replaced as described in the table below.

U51.2 VFPGA Vccint, FX3Intel EN5337QIMPS MP2316GD-P
U13.3 VHSMC, FX3Intel EN5365QIRichtek RT6278BHGQUF
U6VIO+X_HSMC_VCCIOIntel EN5311QITi TPS62902RPJR (Combined Rails)
U7VIO+Y_HSMC_VCCIOIntel EN5311QITi TPS62902RPJR (Combined Rails)

The two adjustable 1A VIO rails have been replaced with a single fixed 3.3V 2A regulator. If required the fixed VIO voltage can be adjusted using R170 and R172. See the regulators datasheet for details on how to set the required voltage.