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

31 March 2022

Affected Parts

The following items are affected by this PCN:

  1. XEM7310-A75
  2. XEM7310-A200

PCB revisions EXX and later are affected by this PCN. Revisions 20170731 and earlier are not affected by this change. The PCB revision is indicated in silkscreen in the location shown below

Revisions 20170731 and earlier are not affected.

Revisions EXX 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 XEM7310 to generate the on-board 1.0V, 1.8V, 1.5V, and 3.3V supplies. Opal Kelly has identified suitable replacement parts for these supplies.

Description of the Change

The Enpirion devices on the XEM7310 are being replaced as described in the table below.

ReferenceVoltageApplicationOriginal P/nReplacement P/N
U151.0 VFPGA VCCINT and VCCBRAM supplyIntel EN5337QIRichtek RT6278BHGQUF
U161.8 VFPGA VCCAUX and VCCADC supplyIntel EP53F8QIMicrochip MIC23153YMT
U181.5 VDDR3, FPGA VCCO supplyIntel EP53F8QIMicrochip MIC23153YMT
U193.3 VHost interface, FPGA VCCO supplyIntel EP53F8QIMicrochip MIC23153YMT