--- title: "Which MOSFET topology?" url: https://daily.dev/posts/which-mosfet-topology--io6j5n6ce source_url: https://www.embeddedrelated.com/showarticle/98.php type: article source: "EmbeddedRelated" published: 2026-05-31T07:48:13.582Z updated: 2026-05-31T09:21:51.692Z tags: ["embedded"] reading_time: 10 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Which MOSFET topology? **[EmbeddedRelated](https://daily.dev/sources/embeddedrelated)** · 10 min read · 0 upvotes · 0 comments ## Summary A breakdown of the four basic MOSFET switching topologies for controlling a two-wire load: high-side N-channel, high-side P-channel, low-side N-channel, and low-side P-channel. The low-side N-channel is the simplest and cheapest option since its gate drive is referenced to circuit ground. High-side switches are required when one load terminal must be tied to ground for safety or EMI reasons. P-channel devices offer simpler gate drive than N-channel in high-side configurations but have worse performance and fewer choices. High-side N-channel requires bootstrap or isolated gate drive circuitry. Low-side P-channel is essentially never used. The post also emphasizes adding a freewheeling diode in parallel with inductive loads to prevent MOSFET breakdown. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#embedded](https://daily.dev/tags/embedded) [View this post on daily.dev](https://daily.dev/posts/which-mosfet-topology--io6j5n6ce)