What Does Advanced Energy Industries Do? Powering the Plasma Inside Every Fab

Advanced Energy Industries doesn't make chips or fab tools. It makes the precision power systems that strike and control the plasma inside etch and deposition chambers. Here's what that means and who depends on it.

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Aug 9, 2026 · 2 min read

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Etching and depositing material onto a silicon wafer both rely on plasma, a charged gas that has to be struck and held at exact power levels for the process to work. Advanced Energy Industries builds the power-conversion and RF-matching systems that do that job, selling them not to chipmakers directly but to the equipment makers who build the tools chipmakers use.

The short answer

Advanced Energy sits one layer removed from the fab floor:

• What it makes: precision power-conversion and RF-matching systems that control plasma inside etch and deposition chambers.
• Who buys it: the major wafer-fab equipment makers, including Applied Materials, Lam Research, Tokyo Electron, and KLA Corporation.
• What goes into it: power semiconductors from Infineon Technologies form the core of its converters.

The full interactive map is on Advanced Energy's supply chain page.

A supplier's supplier

Most companies in a chip supply chain sell either to chipmakers or to the equipment makers who serve them. Advanced Energy sells almost exclusively to the latter. Applied Materials integrates its RF and DC power modules into deposition and etch chambers. , a plasma-etch specialist, relies on the same category of power subsystems, and embeds them into its own tools out of Japan. uses Advanced Energy's power and control modules inside its process-control and inspection systems.