News: Microelectronics
6 March 2026
Infineon’s CoolGaN Transistors G5 adopted by Chicony Power
Infineon Technologies AG of Munich, Germany says that its CoolGaN Transistors G5 has been selected by Taiwan-based notebook adapter maker Chicony Power Technology Co Ltd to power multiple laptop adapters designed for a top customer’s notebooks. The design demonstrates how GaN power semiconductors are accelerating the transition to more compact, energy-efficient charging solutions, enabling smaller form factors and improved sustainability for mainstream computing, says Infineon.
CoolGaN Transistors G5 are engineered for fast switching and low conduction losses across wide operating conditions. Infineon’s high-voltage (HV) GaN transistors feature a high-performance foundational hybrid-drain GIT (gate injection transistor) design that is said to provide the most rugged HV gate functionality, superior dynamic RDS(on) and hard-switching performance and much higher saturation current, all resulting in best overall reliability. Building upon this foundation, Infineon’s newest HV family, the G5 transistors, features up to 30% better performance in standard figures-of-merit, e.g. RDS(on)*Qg, compared to its predecessor.
“The CoolGaN Transistors G5 embody our commitment to reliable, high-performance power semiconductors,” says Johannes Schoiswohl, head of the GaN business line at Infineon. “Partnering with Chicony Power on the top customer’s adapter underscores how GaN enables tangible end-user benefits – smaller size, faster charging, and lower energy consumption — without compromising robustness,” he adds.
“Infineon’s CoolGaN Transistors G5 give us the design headroom to push power density and efficiency into a compact footprint,” says Yang Wang, VP R&D of Chicony Power.
Engineering highlights driven by Chicony Power design capabilities with the use of Infineon’s HV G5 GaN transistors include a high-frequency power architecture with optimized PFC and DC/DC stages leveraging GaN’s fast-switching feature, an EMI-aware design whereby layout, filtering and switching profiles are tuned to deliver low noise and strong compliance margins, and thermal optimization enabling cooler operation and sustained output at 100–300W in compact mechanical envelopes.
Infineon launches CoolGaN Transistors 650V G5 product family
Infineon and Chicony Power collaborate on GaN-based PD3.1 notebook adapter
