Cyient Announces India's First GaN Power ICs

Indian engineering firm Cyient has announced India's first GaN power IC. The design and mass production of GaN (gallium nitride) devices has traditionally been limited to players in Japan, the US, Europe, and parts of Taiwan and China. This announcement carries significance beyond simply "an India-made device arriving on the scene." With two demand drivers — automotive electrification and AI data centers — ramping up simultaneously, diversification of supply sources has become a concern for the entire industry.

Considering why this timing matters reveals the GaN adoption timeline. Automakers are targeting 2027–2028 for integrating GaN into mass-production models. That means 2026, the current year, is effectively the period when component selection and certification processes are being decided. Cyient's entry announcement is meaningful precisely because the competitive window is still open.

Where GaN Differs from Silicon

The most accessible starting point for understanding GaN versus silicon (Si) devices is volume. Compared to silicon devices of equivalent performance, GaN devices can achieve roughly 30–50% size reduction.

What this chart illustrates is the emergence of design margin. A footprint of 50–70% means that more power-handling capability can be packed into the same space, or that thermal design gains more flexibility. In automotive applications with tight space constraints and in high-density rack-mount servers, this difference fundamentally changes design options.

Switching characteristics differ as well. AI data centers are migrating toward 800V DC architecture, and GaN can deliver high-speed, high-efficiency switching while achieving high-voltage capability in a compact form factor. Given that AI server power supply units (PSUs) are now reaching up to 18 kW in some cases, balancing power density and cooling efficiency has become the core of power supply design. GaN's high efficiency, high power density, and superior thermal management capabilities directly map to evaluation criteria in this context.

Two Entry Points for GaN

The entry points for GaN differ between the automotive and AI server segments.

In automotive, on-board chargers (OBCs) and DC/DC converters are the primary initial applications. Both require relatively high-frequency switching and form self-contained functional units within the power system, making device-level replacement structurally straightforward. As adoption rates for these components rise with EV proliferation, pressure to transition to GaN continues to grow — both technically and commercially.

For AI servers, GaN's high-efficiency characteristics directly enter the selection criteria. AI servers consume significantly more power than conventional servers due to high-performance GPUs and large-capacity memory, continuously pushing PSU specifications higher. GaN is selected here not only for efficiency but for the compound benefit of reducing the burden on cooling systems.

The AEC-Q101 Gate — What the Testing Reveals

To use GaN devices in automotive applications, they must pass reliability certification known as AEC-Q101. This standard, established by the Automotive Electronics Council (AEC), defines the minimum requirements that automotive semiconductors must meet, and certification is the entry point for adoption.

The requirements are stringent. Reliable operation across a temperature range of −40°C to above 150°C — and in some cases up to 175°C — is required, along with resistance to tens of thousands of power cycles. Challenges specific to GaN-on-Si devices include charge trapping (characteristic variation caused by charges becoming trapped within the device), gate stability, short-circuit withstand time (SCWT), thermomechanical fatigue, and moisture exposure.

Short-circuit withstand time (SCWT) in particular becomes a critical design constraint. GaN-on-Si SCWT falls below 1 microsecond — significantly shorter than conventional silicon IGBTs. This affects not only device selection but the entire peripheral circuit design including protection circuits, meaning a decision to "switch to GaN" can be inseparable from a reassessment of circuit architecture.

Rather than verifying only whether certification has been obtained, digging deeper into what test process was used to achieve it provides better long-term decision-making material. Because GaN has different degradation mechanisms than silicon, the appropriateness of test design determines the quality of reliability evaluation.

What the 2027–2028 Timeline Demands

With mass production deployment expected in 2027–2028, 2026 is the period when certification, pre-production trials, and supplier registration converge. The key consideration is that GaN adoption conditions are not just technical reliability — they encompass a complex of challenges: high cost, underdeveloped supply chains, and conformance to standardized reliability testing.

The decision-making criteria for Cyient's announcement come down to what phase the certification process is in, and how well-developed the foundry partnership for mass production is. GaN-on-Si manufacturing is substantially tied to a global division-of-labor structure — including wafer supply — so both design capability as a device maker and foundry partnership need to be assessed.

What Adding India as a New Variable Means

Viewing Cyient's announcement not as a single-company product launch but through the lens of geographic diversification of the GaN supply chain reveals its broader industry impact. The entry of an India-based player into GaN device development and manufacturing — previously centered on Japan, Europe, the US, Taiwan, and China — can be evaluated from a procurement risk diversification perspective.

That said, the significance of "India's first" lies in how it serves as a signal toward future industrial development, as proof of technical feasibility. Government semiconductor self-sufficiency policy, formation of a design talent ecosystem, and foundry partnership building may move forward as a package. Rather than viewing this as a short-term increase in adoption options, the realistic framing is that one new variable has been added when thinking about mid-term supply chain composition.

As the GaN market expands geographically, which players will enter the 2027–2028 mass production cycle — that full picture is gradually taking shape. Cyient's trajectory remains worth tracking as one such indicator.