# \#input-impedance **URL:** https://forum.plexim.com/tag/input-impedance/694.md [Latest](https://forum.plexim.com/latest.md) · [Categories](https://forum.plexim.com/categories.md) · [Tags](https://forum.plexim.com/tags.md) --- ## [Influence of Input Filter on Controller Stability](https://forum.plexim.com/t/influence-of-input-filter-on-controller-stability/2665)
**Author:** [@Munadir\_Ahmed](https://forum.plexim.com/u/Munadir_Ahmed)\ **Replies:** 0\ **Last updated:** [October 30, 2025, 9:34pm UTC](https://forum.plexim.com/t/influence-of-input-filter-on-controller-stability/2665 "2025-10-30T21:34:03Z")
DC/DC Controller Design without Input Filter DC/DC converters are often designed assuming an ideal input voltage source, capable of absorbing the switching ripple generated by the converter. In the example below, a buck …