STMicroelectronics launches 100W VIPerGaN converters for appliances

By AI, Created 10:31 AM UTC, May 20, 2026, /AGP/ – STMicroelectronics has introduced two 100W VIPerGaN high-voltage converters aimed at energy-efficient appliances, smart lighting, consumer electronics and home automation. The new parts combine a GaN power switch, gate driver and flyback control in a compact package, with availability starting now and pricing from $1.25 in 1,000-piece orders.

Why it matters: - The new VIPerGaN parts target power supplies that need higher efficiency, smaller size and lower standby loss across appliances and consumer devices. - The converters can help designers reduce external components, improve thermal performance and avoid oversizing power circuitry in products with inductive loads. - STMicroelectronics is positioning the family for broad use in domestic appliances, building and home automation, smart lighting, televisions and chargers.

What happened: - STMicroelectronics introduced two 100W high-voltage converters: VIPerGaN100W and VIPerGaN100WB. - The company said the parts extend wide-bandgap energy savings across appliances and consumer electronics. - STMicroelectronics said the converters are available now through the eSTore and distributors. - Pricing starts at $1.25 for orders of 1,000 pieces. - More information is available in STMicroelectronics’ announcement.

The details: - VIPerGaN100W has a 3.5A drain current limit. - VIPerGaN100WB has a 4.2A drain current limit and can handle short-term peak power up to 125W. - Both parts support a universal AC input range of 85V to 265V and deliver 100W from a 185V supply. - Each device uses a 700V gallium-nitride power transistor with an RDS(on) of 0.27mΩ. - The converters come in a 5mm x 6mm QFN package. - Each device integrates the flyback converter and the GaN gate driver. - The integration removes the need for designers to fine-tune gate resistance and inductance to optimize switching performance. - The converters operate in quasi-resonant mode with zero-voltage switching. - Power management includes frequency foldback at light load and valley skipping at mid load. - ST said its proprietary valley lock stabilizes skipped valleys to avoid audio-frequency variation and support silent operation at all loads. - Burst-mode operation at no-load lowers power consumption below 30mW. - Line-voltage feedforward stabilizes power as input voltage changes. - Dynamic blanking time limits switching-frequency changes to reduce switching losses. - Both converters include protection against input and output overvoltage, overtemperature, brown-in and brown-out. - ST also highlighted the EVLVIPGAN100WP reference design for a 100W USB Type-C Power Delivery 3.0 adapter using VIPERGAN100W. - The reference design offers five output settings from 5V/3.0A to 20V/5.0A, secondary-side regulation and optocoupler feedback. - ST said the reference design reaches peak efficiency above 92% and power density of 24W/in3.

Between the lines: - The pitch is not just efficiency. ST is also trying to simplify power-supply design by integrating more functions into one device. - The silence and low-noise claims matter for consumer products, where audible switching artifacts can be a selling point or a complaint. - The reference design shows how ST wants customers to translate the chips into USB-C adapters and compact power supplies.

What’s next: - Designers can now build around the new parts and the reference design as they plan next-generation appliances and adapters. - Broader adoption will likely depend on whether OEMs use the integration and efficiency gains to cut cost, size and thermal load in finished products.

The bottom line: - STMicroelectronics is betting that more integrated GaN power stages will make it easier to build smaller, cooler and more efficient appliances and chargers.