Power Integrations, a provider of high-voltage integrated circuits for energy-efficient power conversion, has introduced a new member of its InnoMux-2 family of single-stage, independently regulated multi-output offline power supply ICs.
The new device features the industry’s first 1700 V gallium nitride (GaN) switch, fabricated using the company’s proprietary PowiGaN technology. The 1700 V rating further advances the state-of-the-art for GaN power devices, previously set by Power Integrations’ own 900 V and 1,250 V devices, both launched in 2023. The 1,700 V InnoMux-2 IC easily supports 1,000 V DC nominal input voltage in a flyback configuration
Source: Power Integrations and achieves over 90% efficiency in applications requiring one, two or three supply voltages. Each output is regulated within 1% accuracy, eliminating post regulators and further improving system efficiency by approximately 10%. The new device replaces expensive silicon carbide (SiC) transistors in power supply applications such as automotive chargers, solar inverters, three-phase meters and a wide variety of industrial power systems.
Radu Barsan, vice president of technology at Power Integrations, said, “Our rapid pace of GaN development has delivered three world-first voltage ratings in a span of less than two years: 900 V, 1250 V and now 1700 V. Our new InnoMux-2 ICs combine 1700 V GaN and three other recent innovations: independent, accurate, multi-output regulation; FluxLink, our secondary-side regulation (SSR) digital isolation communications technology; and zero voltage switching (ZVS) without an active-clamp, which all but eliminates switching losses.”
Availability and resources
Pricing for InnoMux-2 1700 V ICs starts at $4.90 for 10,000-unit quantities. A reference design, RDR-1053, which describes a 60 W dual-output (5 V and 24 V) power supply, can be downloaded from the Power Integrations website at no cost. For sample ICs, evaluation boards and further information, contact a Power Integrations sales representative or one of the company’s authorized worldwide distributors — DigiKey, Newark, Mouser and RS Components, or visit power.com
