Enphase Energy Publishes White Paper on Kestrel ASIC, Its Fifth-Generation Silicon Platform for Intelligent Power Conversion

About this update from Enphase Energy, Inc.

Purpose-built chip integrates control, sensing, communications, and security to enable high-frequency GaN power conversion and solid-state transformer applications for data centers FREMONT, Calif., July 27, 2026 (GLOBE NEWSWIRE) -- Enphase Energy, Inc. (NASDAQ: ENPH), a global energy technology company, today announced the publication of a new technical white paper, "The Enphase Kestrel ASIC: A Purpose-Built Platform for Intelligent Power Conversion." The white paper is available here. Kestrel is Enphase's internally developed application-specific integrated circuit (ASIC) for intelligent power conversion and the company's fifth generation of custom silicon. The paper describes how the chip extends Enphase's custom silicon investment across microinverters, next-generation IQ® Battery systems, the IQ® Bidirectional EV Charger, and the Enphase IQ® Solid-State Transformer (IQ SST). Fabricated using a mature 22 nm complementary metal-oxide-semiconductor process, Kestrel brings Enphase's power conversion control, sensing, communications, protection, security, and safety functions into one silicon platform. The chip integrates deterministic high-speed control hardware, four 100 Msps analog-to-digital converters (ADCs), custom power line communication and low voltage differential signaling (LVDS) controllers, hardware-enforced isolation, cryptography, secure boot, and functional safety features. By moving these capabilities into silicon, Kestrel is designed to reduce system complexity while preserving the speed, cost structure, and field reliability required for grid-connected power electronics. "Kestrel is an important milestone because it turns Enphase's custom silicon into a reusable platform for multiple product families," said Raghu Belur, co-founder and chief product officer of Enphase Energy. "The white paper shows how one ASIC can help us carry proven power conversion intelligence across microinverters, batteries, bidirectional EV charging, and solid-state transformer modules while supporting the reliability, security, and cost structure required for products deployed at grid scale." The paper highlights Kestrel's role in enabling high-frequency operation with gallium nitride (GaN) bi-directional switch technology. Enphase's single-stage, dual-active-bridge, series-resonant cycloconverter topology requires cycle-by-cycle knowledge of resonant tank curren...

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