Amber Semiconductor
Amber Semiconductor (AmberSemi) is a fabless semiconductor company developing vertical power delivery (PowerTile) and AC Direct power management ICs that reduce energy losses in AI data centers, servers, and smart electrical products, selling to hyperscalers, chip designers, and industrial OEMs.
- Company typePrivate
- Founded2017
- HeadquartersDublin, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Amber Semiconductor does
Amber Semiconductor, Inc. (AmberSemi) is a fabless semiconductor company founded in 2017 by Thar Casey and headquartered in Dublin, California. The company develops solid-state power management semiconductor technologies with two principal product families: PowerTile, a vertical power delivery device that mounts on the backside of server boards directly beneath AI processors to reduce board-level power distribution losses by more than 85%; and the AC Direct platform (AC Direct DC Enabler, AC Direct Switch Controller, AC Direct Sensing), which extracts DC power directly from AC mains without rectifier bridges, transformers, or high-voltage bulk capacitors. PowerTile is the flagship product targeting AI data centers and targets 1,000A per chip scalable beyond 10,000A, while the AC Direct line targets smart electrical products, IoT, and industrial motor control applications. The company holds over 50 U.S. patents protecting these architectures.
AmberSemi monetizes primarily through B2B hardware sales of its semiconductor ICs to hyperscalers (Amazon, Microsoft, Google), AI chip designers (Nvidia, AMD, Intel), server manufacturers, and electrical product OEMs. A secondary revenue stream arises from co-developed reference designs and licensing relationships with partners including STMicroelectronics, Nordic Semiconductor, Jasco, and Deako. The company does not publicly disclose pricing and engages in custom enterprise contract negotiations. Customer shipments of PowerTile are scheduled to begin in Q3 2026 following a successful January 2026 tape-out.
As of March 2026, AmberSemi has approximately 30 employees (with plans to scale to ~50), operates engineering offices in Bengaluru, India, and is opening an additional Asia office. The company has raised $50 million in total disclosed equity funding, including a $30 million Series C closed in March 2026, and declined to disclose its valuation or revenue in its SEC Form D filing. Distribution is exclusively direct enterprise sales supplemented by foundry manufacturing partnerships and reference design collaborations; the company has no retail or SMB channels.
Amber Semiconductor firmographics
Firmographics- Name
- Amber Semiconductor
- Legal name
- Amber Semiconductor, Inc.
- Website
- https://ambersi.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Amber Semiconductor (AmberSemi) is a fabless semiconductor company developing vertical power delivery (PowerTile) and AC Direct power management ICs that reduce energy losses in AI data centers, servers, and smart electrical products, selling to hyperscalers, chip designers, and industrial OEMs.
- Ownership category
- akta.pro rank
Amber Semiconductor industry classification
Industry- Product category
- Power Management Semiconductors
- SIC
- Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Power Management & Power Conversion ICs (PMIC/DC‑DC/AC‑DC/Gate Drivers) (HDAHABAE)
Keywords
Where Amber Semiconductor is headquartered
LocationHeadquarters
- HQ city
- Dublin
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Amber Semiconductor business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations
Revenue model
- PowerTile™ Semiconductor Device Sales: AmberSemi sells its PowerTile vertical power delivery semiconductor devices to AI data center operators, chipmakers, and server manufacturers. A single PowerTile replaces over 33 power ICs. Customer shipments planned to begin in Q3 2026 following successful January 2026 tape-out.
- AC Direct DC Enabler and Switch Controller IC Sales: Fabless semiconductor company selling power management ICs into industrial, commercial, residential, and data center markets. First commercial silicon chip (AC Direct DC Enabler) entering customer evaluation with volume production expected. References existing and planned design-ins with electrical product manufacturers.
- Licensing and Reference Design Revenue: AmberSemi develops and licenses its power semiconductor technologies to manufacturing partners and semiconductor companies. Reference designs are co-developed with partners such as STMicroelectronics (brushless motor reference design) and Nordic Semiconductor (IoT power solutions), potentially generating licensing and design-in fees.
Go-to-market motion3 records
Distribution channels4 records
Marketing channels6 records
Amber Semiconductor product offering
Product offeringCore offering
Amber Semiconductor (AmberSemi) is a fabless semiconductor company that designs and sells advanced power management semiconductor chips. Its flagship product, PowerTile™, is a vertical power delivery device that mounts on the backside of a server board directly beneath AI processors, delivering up to 1,000A per chip and reducing board-level power distribution losses by more than 85%. The company also sells the AC Direct DC Enabler™ family of AC-DC power conversion ICs and solid-state switch controller platforms for industrial, commercial, residential, and data center markets.
Product overview
Amber Semiconductor (AmberSemi) is a fabless semiconductor company offering a portfolio of power management solutions. The core product line includes PowerTile™ for vertical power delivery in AI data centers, the AC Direct DC Enabler™ family for AC-DC power conversion, the AC Direct Switch Controller Platform, AC Direct Sensing technology, and the Solid-State Switch Control Platform. These products enable backside placement on server boards, direct DC extraction from AC mains, and intelligent power switching and protection—serving AI processors, servers, FPGAs, and electrical products.
Differentiator
Problem solved
Functional benefit
Brands
- PowerTile: Vertical power delivery technology for AI data centers, enabling backside placement on server boards with up to 1,000A per chip and scalability beyond 10,000A.
Products and services
- PowerTile™
- AC Direct DC Enabler™
- AC Direct Switch Controller Platform (Solid-State Switch Control Platform)
- AC Direct Sensing
Quantifiable outcome
- PowerTile reduces board-level power distribution losses by more than 85% compared to traditional lateral power delivery methods.
- +5 more outcomes
Companies that use Amber Semiconductor
Customer profileNamed customers6 records
Segments4 records
Ideal customer profiles4 records
Amber Semiconductor technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Amber Semiconductor partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and secondary.
- AMDcoreAmberSemi co-chairs the APEC 2026 Industry Session 'Vertical Power for AI Data Centers' alongside AMD, Nvidia, and Global Foundries. AMD's Sr. Fellow Data Center GPU Platform and Chief Power Architect (Ahmed Abou-Alfotouh, PhD) presents on power architecture challenges and requirements for next-generation AI data centers. The collaboration positions AmberSemi as a key ecosystem player in the AI processor power delivery standard.
- NvidiacoreAmberSemi co-chairs the APEC 2026 Industry Session alongside Nvidia, with Nvidia Research Scientist (Youssef E. Elasser, PhD) presenting on advancing magnetic designs for high-density power solutions. Nvidia's processors are among the primary targets for PowerTile integration, and the collaboration validates AmberSemi's technology for next-generation AI processor power delivery.
- Global FoundriescoreAmberSemi co-chairs the APEC 2026 Industry Session alongside Global Foundries, with VP of Power Technologies (Ankush Gupta) presenting on silicon technology and process integration path for vertical power. Global Foundries is a key manufacturing partner for semiconductor fabrication of PowerTile and other AmberSemi IC products.
- Multiple Manufacturing PartnerscoreAmberSemi has built a supply chain with multiple established manufacturing partners to protect itself from geopolitical and competitive uncertainty. The company secured its supply chain for mass production using reputable foundries, which also provides customer confidence when working with a small startup. This is described as the 'single biggest fear' large customers have when working with small semiconductor startups.
- DeakosecondaryMulti-phased, multi-faceted partnership announced January 2025 to explore integration of AmberSemi's power management solutions into Deako's modular smart lighting control systems for homeowners, builders, integrators, and electricians. Deako is the creator of the industry's first modular smart lighting system in the builder and electrical products channel, working with top builders including D.R. Horton, Meritage Homes, and Toll Brothers.
- JascosecondaryMulti-faceted, multi-phased partnership announced January 2025 to explore integration of AmberSemi's power management solutions into Jasco's lighting and connected-home product lines for retail consumers and professional installers. Jasco is a leader in lighting fixtures, lighting controls, consumer electronics, and power protection products with broad brand licensing relationships and channel penetration.
- STMicroelectronicscoreJoint reference design developed at APEC 2024 for brushless DC motor applications combining AmberSemi's AC Direct DC Enabler power conversion technology with ST's STM32 microcontrollers and motor control platforms. The design demonstrates simplified power supply circuitry, reduced BOM, smaller PCB footprint, and improved efficiency. Both companies actively market the reference design to their respective customer bases.
- Nordic SemiconductorcoreMulti-faceted partnership announced November 2023 to explore sales, marketing, and development initiatives for smart electrical products and wirelessly integrated applications. Nordic offers technology platforms powered by AmberSemi's power products, and both companies develop unique reference designs for targeted customer segments. As Nordic expands into wireless IoT markets requiring AC power, AmberSemi's compact power solutions complement Nordic's battery-powered product portfolio.
Scale indicators10 records
Recent moves7 records
Expansion highlights6 records
Amber Semiconductor competitors and assessment
Company assessmentBroad incumbents
- Infineon Technologies: Infineon is a global power semiconductor leader spanning discrete, module, and IC products for industrial, automotive, and data center applications. Its power module portfolio is comparable in function to AmberSemi's PowerTile integration approach.
- Analog Devices: Analog Devices offers a broad portfolio of power management ICs, isolation, and high-performance analog for industrial and data center markets. It competes with AmberSemi across the AC Direct DC Enabler and industrial power conversion categories from a much larger and broader base.
- Renesas Electronics: Renesas offers a broad portfolio of PMICs, AC-DC controllers, and solid-state switching products for industrial and IoT markets. Its AC-DC and switch controller lines overlap directly with AmberSemi's AC Direct DC Enabler and Switch Controller platform.
- Texas Instruments: TI is the largest analog and power management semiconductor vendor globally, with deep penetration across data center and industrial sockets. It is a broad incumbent whose power IC portfolio overlaps with AmberSemi's PMIC and AC-DC product lines and whose incumbency is the primary competitive threat.
- STMicroelectronics: STMicroelectronics is a broad semiconductor incumbent with deep power management, motor control, and microcontroller portfolios. While also a current AmberSemi partner for the STM32 reference design, it competes across industrial and power conversion IC categories.
- ON Semiconductor: ON Semiconductor supplies power management ICs, discrete devices, and modules into data center, industrial, and automotive markets. Its power solutions for AI servers and high-current applications overlap with AmberSemi's vertical power delivery thesis.
Emerging players
- Navitas Semiconductor: Navitas is a fabless GaN/SiC power IC company targeting data center, mobile, and consumer fast-charging applications. It is an emerging player pursuing a similar high-efficiency, high-density power conversion story for AI infrastructure using wide-bandgap semiconductors.
- Efficient Power Conversion (EPC): EPC designs GaN-based power transistors and ICs for high-frequency, high-density DC-DC conversion in computing and industrial applications. It is an emerging player whose dense power device approach is conceptually adjacent to AmberSemi's vertical power delivery strategy.
Direct peers
- Vicor Corporation: Vicor designs high-density, high-current power modules and vertical power delivery solutions for data center and high-performance computing applications. It is the most direct comparable to AmberSemi's PowerTile strategy of dense, processor-adjacent power delivery.
- Monolithic Power Systems (MPS): MPS is a fabless power management semiconductor specialist with a broad DC-DC and PMIC portfolio serving data center, industrial, and computing applications. It is a direct peer on fabless PMIC business model and product overlap with AmberSemi's PowerTile and AC Direct lines.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Amber Semiconductor social profiles
Digital presenceAmber Semiconductor financial estimates
Financial estimateRevenue estimate
Valuation estimate
Amber Semiconductor leadership team
Management profileNumber of profiles
Profiles5 records
Amber Semiconductor funding detail
Funding detailFunding overview
Funding rounds3 records
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Amber Semiconductor M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Amber Semiconductor
What does Amber Semiconductor do?
Amber Semiconductor (AmberSemi) is a fabless semiconductor company that designs and sells advanced power management semiconductor chips. Its flagship product, PowerTile™, is a vertical power delivery device that mounts on the backside of a server board directly beneath AI processors, delivering up to 1,000A per chip and reducing board-level power distribution losses by more than 85%. The company also sells the AC Direct DC Enabler™ family of AC-DC power conversion ICs and solid-state switch controller platforms for industrial, commercial, residential, and data center markets.
Is Amber Semiconductor a public or private company?
Amber Semiconductor is a private company. It is classified as venture growth investor backed and is currently operating.
When was Amber Semiconductor founded?
Amber Semiconductor was founded in 2017. It employs 11 to 50 people.
Where is Amber Semiconductor based?
Amber Semiconductor is headquartered in Dublin, United States, in the North America region.
How does Amber Semiconductor make money?
Three revenue lines are on record. PowerTile™ Semiconductor Device Sales are the primary driver. The others are AC Direct DC Enabler and Switch Controller IC Sales and licensing and Reference Design Revenue.
Who are Amber Semiconductor's main competitors?
Broad incumbents on record are Infineon Technologies, Analog Devices, Renesas Electronics, Texas Instruments, STMicroelectronics and ON Semiconductor. Emerging players are Navitas Semiconductor and Efficient Power Conversion (EPC). Direct peers are Vicor Corporation and Monolithic Power Systems (MPS).
Does Amber Semiconductor have an API?
No public API is recorded for Amber Semiconductor.
What industry is Amber Semiconductor in?
Amber Semiconductor's product category is Power Management Semiconductors. Its primary akta.pro industry code is HDAHABAE, Power Management & Power Conversion ICs (PMIC/DC‑DC/AC‑DC/Gate Drivers). Its SIC code is 3620.