PHY Magnetics for KSZ9031 - Migration from KSZ9021

In a previous design we used KSZ9021, which is now "not recommended for new designs", and it was using Bel Fuse. Now we need to migrate to a more up-to-date part. Can we use the same Bel Fuse for the KSZ9031?

Yes. A board schematic is available on the KSZ9031MNX EVAL BOARD product page and a "KSZ9021GN to KSZ9031MNX Migration Guide" is available on the KSZ9031MNX EVAL BOARD product page.

The Magnetics Selection Criteria is the same (inductance = 350 uH). Per "Section 12.0 Magnetics" of the KSZ9031MNZ datasheet, Bel Fuse and HALO magnetics are recommended.

© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.