STMicroelectronics has introduced two new 100 W VIPerGaN high-voltage converters, expanding the use of GaN-based power conversion across consumer electronics, smart home systems, appliances, and building automation applications.

The new VIPerGaN100W and VIPerGaN100WB integrate a 700 V GaN transistor, gate driver, and flyback controller into compact 5 mm × 6 mm QFN packages. The VIPerGaN100WB supports higher peak current capability, allowing short-term output power up to 125 W for applications with inductive loads such as motors and solenoid valves.

The integrated GaN power stage features ultra-low RDS(on), enabling improved thermal performance and higher efficiency. By leveraging the high switching frequencies enabled by GaN technology, the converters reduce passive component size and improve overall power density.

ST also demonstrated the technology through its EVLVIPGAN100WP 100 W USB Type-C Power Delivery 3.0 reference design, which achieves over 92% peak efficiency and a power density of 24 W/in³. The design supports multiple USB-PD output profiles from 5 V to 20 V.

Technically, the converters operate in quasi-resonant flyback mode with zero-voltage switching, incorporating advanced power management features such as valley skipping, frequency foldback, and burst-mode operation to optimize efficiency across varying load conditions. Standby power consumption is reduced below 30 mW.

The devices also integrate extensive protection functions, including overvoltage, overtemperature, and brown-in/brown-out protection, simplifying system-level design and improving reliability.

From a market perspective, this launch reflects the ongoing expansion of GaN beyond premium fast chargers into broader consumer and industrial power applications. By integrating GaN power devices and control circuitry into highly compact solutions, ST is lowering the barrier to adoption for mainstream OEMs seeking higher efficiency, reduced size, and lower standby power consumption.

The move also strengthens ST’s competitive position in the growing integrated GaN power IC market, where ease of design integration and cost-effective scalability are becoming increasingly important differentiators.

Original – STMicroelectronics