Power Integrations, Inc. (POWI) | The Buildout — AI Infrastructure
The Verdict
Power Integrations designs high-voltage power-conversion integrated circuits that combine a high-voltage transistor, drivers, control circuitry, and sometimes communications into one product. Its PowiGaN switches and SCALE gate drivers sit inside server auxiliary power, 800-volt DC rack architectures, solid-state transformers, and the grid infrastructure that feeds AI data centers.
| Market Cap | — |
| Revenue (TTM) | $446M |
| Revenue Growth | +3.1% |
| EBITDA Margin (TTM) | 11.8% |
| Net Cash | $257M |
| Earnings Beats | 7 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Industrial revenue grew 23% year over year and 15% sequentially in Q1 2026, the company's clearest current growth engine.
- PowiGaN revenue grew more than 40% in 2025, giving the high-voltage platform disclosed traction.
- Management estimates the data center SAM, including rack and grid applications, will exceed $1 billion by 2030.
- Automotive engagements cover 17 of the top 20 EV manufacturers, with management targeting $100 million of automotive revenue by 2029.
- The restructuring is substantially complete, and the application-engineering move shifted about $3 million per quarter from SG&A to R&D.
What We’re Watching
- Customer concentration remains high: one unnamed customer was 30% of Q1 2026 revenue, and the top ten were about 80%.
- Internal inventory days on hand were 292 at Q1 2026, against a target below 200 days.
- High-voltage rack GaN revenue is 'a couple of years out,' and peer evidence dates the 800 V DC ramp to late 2027 or 2028.
- The 2026 non-GAAP tax rate is expected to step up to 7%–8%, from 2% in FY2025.
The thesis appears to be strengthening on disclosure and execution, even though the quarter itself was ordinary. Industrial delivered the promised strength, consumer inventory cleared, the restructuring was completed, and management moved from cautious qualitative language to quantified data center and automotive targets. The open question is whether the largest AI revenue opportunity—high-voltage rack GaN—can convert from engagement to revenue before the 2027–2028 window slips.
Earnings Beat
Q1 2026 revenue was $108.3 million, up 3% year over year and 5% sequentially. Non-GAAP gross margin was 53.5%, at the midpoint of guidance. Industrial revenue grew 23% year over year and 15% sequentially, while non-GAAP operating margin expanded 200 basis points sequentially to 11.7%.
| Metric | Q1 FY2026 | Q4 FY2025 | Q1 FY2025 | YoY |
|---|---|---|---|---|
| Revenue | $108M | $103M | $106M | +2.7% |
| Gross margin | 52.6% | 52.9% | 55.2% | -260bps |
| EBITDA | $13M | $17M | $14M | −9.9% |
| EPS | $0.06 | $0.24 | $0.15 | −61.7% |
| Channel inventory weeks | 8.9 | 9.4 | n/a | — |
The demands that data centers are placing on the power grid are just as important and challenging, and we are well positioned to respond with our high-power products. Power grids are rapidly evolving to support the estimated 200 gigawatts of power needed for data centers by 2030.— Jen Lloyd, CEO, May 9, 2026
Management tone: Management shifted from prior cautious, qualitative language to quantified targets—automotive revenue 'on track to double this year,' a $100 million 2029 auto target, and a data center SAM above $1 billion by 2030. The CFO's Q&A answers were specific on consumer seasonality, data center timing, and inventory: consumer is expected flattish to slightly up, high-voltage rack revenue is not next year, and the company is doing nothing unnatural in the channel.
Management Guidance
For Q2 2026, management guided revenue to $115 million to $120 million, non-GAAP gross margin to 54% to 55%, non-GAAP operating expenses to $47 million plus or minus $0.5 million, and non-GAAP operating margin to 13.5% to 15.5%. The increase was attributed to higher order activity, manufacturing efficiencies, volume, and the yen-dollar exchange rate. For full-year 2026, management expects OpEx growth in low single digits, CapEx of 5%–6% of revenue weighted to the second half, and a non-GAAP tax rate of 7%–8%.
Trajectory
Revenue has been uneven: $115.9 million in Q2 FY2025, $118.9 million in Q3, $103.2 million in Q4, and $108.3 million in Q1 FY2026. The computed signal is decelerating even though Q1 improved sequentially. Non-GAAP gross margin fell from 55.9% a year ago to 53.5%, driven by the lagged yen-dollar true-up and restructuring-related costs, while the mix shifted toward industrial—up 23% year over year in Q1—from a still-soft consumer.
The Model
The model projects FY+1 revenue of $460.0 million and EBITDA of $59 million, a 12.8% EBITDA margin, then FY+2 revenue of $510 million and EBITDA of $81 million, a 15.9% EBITDA margin. Near-term output tracks the guided Q2 2026 sequential increase and a gradual industrial recovery; the FY+2 step-up reflects management's stated operating-leverage framework and the long-dated ramp of high-voltage, data center, and automotive sockets.
| Metric | FY2025 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $444M | $460M | $510M |
| YoY Growth | — | +3.7% | +10.9% |
| EBITDA | $54M | $59M | $81M |
| EBITDA Margin | 12.2% | 12.8% | 15.9% |
Projections are the median of 5 independent model runs. The model’s revenue sits 6.7% below analyst consensus.
For Q2 2026, management guided revenue to $115 million to $120 million, non-GAAP gross margin to 54% to 55%, non-GAAP operating expenses to $47 million plus or minus $0.5 million, and non-GAAP operating margin to 13.5% to 15.5%. The increase was attributed to higher order activity, manufacturing efficiencies, volume, and the yen-dollar exchange rate. For full-year 2026, management expects OpEx growth in low single digits, CapEx of 5%–6% of revenue weighted to the second half, and a non-GAAP tax rate of 7%–8%.
What Could Go Right — and Wrong
- An 800 V DC design win at a named hyperscaler or server OEM would convert the NVIDIA collaboration into a volume socket.
- Auxiliary power wins scale quickly enough to matter on their own.
- Industrial growth remains near 20% year over year while consumer stabilizes.
- Internal inventory days fall below 200 without revenue or margin pressure.
- Automotive revenue doubles in 2026 and the $100 million 2029 target becomes visible in the mix.
- The 800 V DC ramp slips beyond the 2027–2028 window, leaving the AI story on auxiliary and grid revenue only.
- A major customer or distribution relationship is lost at 30% customer concentration.
- A second-half 2026 demand fade like the one Texas Instruments warned about.
- Faster GaN competition from ON or Navitas wins the 800 V DC sockets before POWI scales.
- A strong yen or foundry disruption compresses gross margin while inventory stays elevated.
Looking Ahead
The next twelve months hinge on the Q2 2026 result confirmation and second-half product ramps. Management expects TinySwitch-5 production to begin in 2H 2026, TOPSwitchGaN to ramp after its APEC launch, and automotive production at a major German carmaker to continue. The central long-range markers—800 V DC reference designs and the 2200 V GaN demonstration—are product validation, not near-term revenue.
- Aug 5, 2026Q2 2026 results release — Source set includes the release headline but not Q2 financial detail, so May-guidance confirmation is pending.
- 2H 2026TinySwitch-5 production ramp — Production starts across the disclosed design pipeline.
- 2026TOPSwitchGaN ramp — Ramp after APEC launch; chargers, drones, e-bikes, appliances.
- Year-end 2026Inventory normalization — Internal inventory days target below 200; channel weeks about 8.
- 2027–2028800 V DC inflection — Ecosystem consensus timing for high-voltage GaN/SiC ramp.
Financials
Annual Summary
| Metric | FY2024 | FY2025 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $419M | $444M | $446M | +5.9% |
| Gross Margin | 53.5% | 54.5% | 53.9% | +90bps |
| EBITDA | $52M | $54M | $1.2B | +2.9% |
| EBITDA Margin | 12.5% | 12.2% | 11.8% | 36bps |
| Net Income | $32M | $22M | $17M | -31.4% |
| Free Cash Flow | $64M | $87M | $1.0B | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)53.9%
- EBITDA Margin (TTM)11.8%
- Net Margin (TTM)3.7%
- ROIC4.8%
- FCF Conversion160.6%
- SBC / Revenue8.4%
The Company
Power Integrations designs 'system-level' high-voltage power-conversion ICs that combine a high-voltage transistor, drivers, control circuitry, and sometimes a communication link. Its product families include AC-DC lines such as TOPSwitch, TinySwitch, LinkSwitch, Hiper, InnoSwitch, and InnoMux-2; SCALE and SCALE-2 gate drivers; and BridgeSwitch motor-driver ICs. The company brands its GaN technology PowiGaN and positions it for server auxiliary power, 800 V DC rack architectures, and grid infrastructure.
The company is fabless in practice: the vast majority of silicon wafers are outsourced to three foundries—Lapis, Seiko Epson, and X-FAB—and assembly uses a high-voltage molding compound available from only a few suppliers. It operates one reportable segment and is heavily distribution-dependent, with roughly 71% of Q1 2026 revenue through distributors. Owned sites include San Jose, California; a New Jersey R&D facility; a Germany design center; and a Switzerland office.
Business Segments
Competitive Landscape
POWI faces competitor sets in each product category per its 10-K: PWM-controller chips, gate drivers, and motor-driver ICs. In GaN specifically, the source record places Monolithic Power Systems, Navitas, Infineon, and Wolfspeed among ecosystem competitors, though some of those labels are inferred rather than documented. Management presents POWI as a pure-play high-voltage company with native GaN capability up to 2200 V.
- Named in the 10-K as a PWM-controller chip competitor.
- NXPNamed in the 10-K as a PWM-controller chip competitor.
- InfineonNamed in the 10-K as a gate-driver and motor-driver IC competitor; also cited among GaN/power competitors.
- Named in the 10-K as a motor-driver IC competitor; the intel file notes a GaN design funnel above $1.5 billion.
- NavitasListed in the intel file as a GaN/power semiconductor competitor, with AI infrastructure revenue growth and NVIDIA-ecosystem branding.
Supply Chain
POWI sits between GaN/analog design and outsourced wafer fab, selling primarily through distribution into appliance, industrial, data center, and automotive customers. No neighbor named POWI on any supplied call.