Power Integrations unveils GaN Switcher IC with 1250-Volt capacity

Power Integrations has recently introduced the latest addition to their InnoSwitch family of off-line CV/CC QR flyback switcher ICs. This release is the world's highest-voltage, single-switch gallium-nitride (GaN) power supply IC, boasting a 1250-volt PowiGaN switch. The InnoSwitch 3-EP 1250 V ICs join the lineup of Power Integrations' products, offering synchronous rectification, FluxLink safety-isolated feedback, and a diverse range of switch options. These options include 725 V silicon, 1700 V silicon carbide, and now PowiGaN in 750 V, 900 V, and 1250 V variants. Power Integrations' 1250 V PowiGaN technology exhibits switching losses that are significantly lower than those observed in comparable silicon devices operating at the same voltage. Consequently, this leads to an impressive power conversion efficiency of up to 93 percent, facilitating the development of compact flyback power supplies capable of delivering up to 85 W without the need for a heatsink. Radu Barsan, vice president of technology at Power Integrations, said: "Power Integrations continues to advance the state of the art in high-voltage GaN technology development and commercial deployment, rendering even the best high-voltage silicon MOSFETs obsolete along the way. We were first to market with high-volume shipments of GaN-based power-supply ICs in 2019, and earlier this year introduced a 900-volt...