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.
14 September 2022
The following items are affected by this PCN:
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.
|REFERENCE||VOLTAGE||APPLICATION||ORIGINAL P/N||REPLACEMENT P/N|
|U5||1.2 V||FPGA Vccint, FX3||Intel EN5337QI||MPS MP2316GD-P|
|U1||3.3 V||HSMC, FX3||Intel EN5365QI||Richtek RT6278BHGQUF|
|U6||VIO||+X_HSMC_VCCIO||Intel EN5311QI||Ti TPS62902RPJR (Combined Rails)|
|U7||VIO||+Y_HSMC_VCCIO||Intel EN5311QI||Ti 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.