# AmberSemi™

> AmberSemi is a Dublin, California fabless semiconductor company developing power-conversion, control and protection hardware. After years building silicon replacements for bulky building-electrical components, it concentrated its resources on PowerTile, a thin vertical power module designed to sit beneath AI processors and shorten the path from a 50-volt supply to the load. The company says one 20 x 24 x 1.68 mm device can deliver 1,000 amps and cut board-level distribution losses by more than 85%; the commercial test is still ahead, with customer samples planned for 2026 and production volumes targeted for 2027.

- **Founded:** 2017
- **Headquarters:** Dublin, United States
- **Founders:** Thar Casey (Founder, President and CEO)
- **Team size:** Approximately 30 employees in March 2026, with a stated plan to grow toward 50; third-party records vary and earlier supplied data listed 19.
- **Products:** PowerTile™, AC Direct DC Enabler™, Switch Control & Protection Platform, AC Direct Sensing™
- **Notable:** More than 50 U.S. patents secured, according to the company in 2026., TIME Best Inventions of 2021 recognition for the Amber AC Switch., Fast Company Next Big Things in Tech 2022 selection.

## Products & services

- **PowerTile™** — An ultra-low-profile DC-DC vertical power-delivery module designed for backside placement beneath CPUs, GPUs and FPGAs. AmberSemi specifies 1,000 amps per 20 x 24 x 1.68 mm device and parallel scaling beyond 10,000 amps.
- **AC Direct DC Enabler™** — A non-isolated AC-DC conversion architecture that combines conversion, regulation and supervisory functions without a rectifier bridge, transformer or high-voltage bulk capacitor.
- **Switch Control & Protection Platform** — Configurable mixed-signal control devices for deterministic switching, fast protection, safety functions and load telemetry across solid-state and electromechanical switches.
- **AC Direct Sensing™** — A patented approach to continuous sensing of the state and variance of mains electricity, previously presented as one of AmberSemi's three core AC Direct technologies.

## Achievements

- More than 50 U.S. patents secured, according to the company in 2026.
- TIME Best Inventions of 2021 recognition for the Amber AC Switch.
- Fast Company Next Big Things in Tech 2022 selection.
- Edison Awards Gold in 2023 and another Edison Gold recognition in 2024.
- Engineering Matters 2024 Innovation Champion and Gold Award.
- Included in EE Times' Silicon 100 startups to watch in 2024.
- Joined the Global Semiconductor Alliance in 2023 and is a voting member of NEMA.
- Completed PowerTile silicon tape-out in January 2026.
- Received a 2026 innovation award from the East Bay Economic Development Alliance.

## Latest updates

- **2026-03** — Closed the initial $30 million Series C and said PowerTile samples would begin shipping to major customers in Q3 2026.
- **2026-03** — Previewed PowerTile reference designs from 1,000 to 6,000 amps at APEC and chaired a vertical-power session with speakers from AMD, Nvidia and GlobalFoundries.
- **2026-01** — Announced successful silicon tape-out of PowerTile; separately said initial material production volumes were targeted for 2027.
- **2026-01** — Received an innovation award from the East Bay Economic Development Alliance.
- **2025-03** — Introduced a 50V-to-0.8V vertical-conversion direction for AI data centers at APEC 2025.
- **2025-01** — Announced product-integration exploration partnerships with Jasco and Deako.

## Links

- Website: https://ambersi.com
- LinkedIn: https://www.linkedin.com/company/amber-solutions-inc./
- Twitter/X: https://twitter.com/amber_solutions
- Facebook: https://www.facebook.com/ambersolutions

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Profile page: https://yespress.io/ambersemi
Published by YesPress — https://yespress.io
Last updated: 2026-08-20