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.
01 April 2022
The following items are affected by this PCN:
PCB revisions FXX and later are affected by this PCN. Revisions EXX and earlier are not affected by this change. The PCB revision is indicated in silkscreen in the location shown below.
Revisions EXX and earlier are not affected. This includes date code 20171018 and earlier.
Revisions FXX 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 XEM7350 to generate several of the on-board system and VCCO supplies. Opal Kelly has identified suitable replacement parts for these supplies.
Description of the Change
The Enpirion devices on the XEM7350 are being replaced as described in the table below.
|Reference||Voltage||Application||Original P/n||Replacement P/N|
|U1+U5||1.0 V||FPGA VCCINT and VCCBRAM||Intel EN5364QI/EN5394QI||Infineon IR38063MTRPBF|
|U2||3.3 V||FMC, miscellaneous system functions||Intel EN5364QI||Richtek RT6278BHGQUF|
|U3||1.8 V||FPGA VCCAUX, host interface||Intel EP53F8QI||Microchip MIC23153YMT|
|U6||1.5 V||DDR3||Intel EP53F8QI||Microchip MIC23153YMT|
|U31||2.0 V||FPGA VCCAUX_IO||Intel EP5348UI||Maxim MAX25300BATA/V+|
|U35||1.5V||Intermediate step-down for transceiver core LDO||Intel EN5337QI||MPS MP2316GD-P|
|U36||1.8V||Intermediate step-down for transceiver termination LDO||Intel EP53F8QI||Microchip MIC23153YMT|
|U15||VADJ||Adjustable supply voltage for FPGA banks 12, 15, 16||Intel EN5365QI||Semtech SC186ULTRT¹|
- The Semtech SC186ULTRT is capable of the same set of output voltages as the Intel EN5322QI. There is no change to VADJ configuration as described in Device Settings.