AI chip startup Epic Microsystems has emerged from stealth with a $21 million Series A funding round led by Seligman Ventures.

Intel Capital, AICONIC Ventures, and Cambium Capital also participated in the round, alongside existing seed investors A&E Investments, Assam Ventures, and Nepenthe Capital. It brings the total raised by Epic Microsystems to $26 million to date.

As part of the investment, Umesh Padval, managing partner, Seligman Ventures, will join Epic's board of directors.

Founded in 2024, San Jose-based Epic Microsystems is developing power delivery systems to support AI infrastructure. The company said that as racks become denser, traditional solutions are reaching their limits and will struggle to continue scaling in line with efficiency, thermal management, and physical integration needs. As a result, hyperscalers are having to compromise in order to get the best performance per watt from their infrastructure.

To overcome this challenge, Epic has developed a silicon-proven hybrid switched-capacitor (HSC). The startup claims that not only will this approach improve power efficiency, current density, and thermal performance to the next era of AI compute, but its hybrid switched-capacitor design is more compact than traditional bulky indicators, offering a more “efficient mix of capacitors and optimized components” that enables more effective system-level thermal management.

"AI data center architectures are breaking historic power boundaries, and existing power delivery ecosystems simply can't keep up," said Sabin Eftimie, co-founder and CEO of Epic Microsystems. "Our approach reimagines DC-DC power delivery from the ground up. By addressing efficiency, thermals, and rack densification simultaneously, we give hyperscalers greater architectural flexibility as rack power scales toward the multi-megawatt era.”