ST Unveils 100W VIPerGaN Converters for Energy-Efficient Appliances

Why It Matters

The converters enable compact, high‑efficiency power designs for a broad range of appliances, accelerating the shift toward greener, lower‑cost electronics.

Key Takeaways

• 100 W VIPerGaN converters support 85‑265 V universal AC input
• 700 V GaN transistor delivers 0.27 mΩ RDS(on) for high efficiency
• Reference USB‑C PD 3.0 design hits >92 % efficiency, 24 W/in³ density
• Valley‑skipping and burst‑mode reduce noise and idle power below 30 mW
• Priced at $1.25 per 1,000 units, enabling cost‑effective integration

Pulse Analysis

Gallium‑nitride (GaN) power devices have been reshaping the efficiency landscape for power conversion, and STMicroelectronics’ latest VIPerGaN100W family pushes the envelope further. By integrating a 700 V GaN transistor with an ultra‑low 0.27 mΩ on‑resistance into a compact 5 mm × 6 mm QFN package, ST delivers a solution that combines ruggedness with high switching frequencies. This integration eliminates the need for separate gate drivers and fine‑tuning of passive components, allowing OEMs to shrink bill of materials while meeting stringent thermal and reliability targets across a 85‑265 V input range.

The technical merits translate directly into performance gains for end‑users. In ST’s reference design for a 100 W USB‑Type‑C Power Delivery 3.0 charger, the VIPerGaN100W achieves more than 92 % peak efficiency and a power density of 24 W per cubic inch—metrics that rival dedicated silicon‑based solutions while occupying less board space. Advanced control features such as quasi‑resonant zero‑voltage switching, valley‑skipping, and burst‑mode keep acoustic noise low and idle power under 30 mW, addressing both consumer expectations for silent operation and regulatory pressure for standby power reduction.

For the appliance and consumer‑electronics market, the timing is strategic. Designers of coffee makers, smart lighting, and small air‑conditioners can now incorporate higher‑power, more efficient converters without over‑specifying components for inductive loads. At a price point of roughly $1.25 per thousand units, the VIPerGaN converters lower the cost barrier for GaN adoption, potentially accelerating the transition from traditional silicon MOSFETs to wide‑bandgap solutions. As energy‑efficiency standards tighten globally, ST’s offering positions it as a key enabler for the next generation of greener, higher‑performance home and office devices.