Power Integrations, a leader in high-voltage integrated circuits for energy-efficient power conversion, has introduced the world’s highest-voltage, single-switch gallium-nitride (GaN) power supply integrated circuit (IC). This new release features a remarkable 1250-volt PowiGaN switch. These InnoSwitch3-EP 1250 V ICs represent the latest additions to Power Integrations’ InnoSwitch family, designed for off-line constant voltage/constant current (CV/CC) QR flyback switcher ICs.
The InnoSwitch line boasts synchronous rectification, FluxLink safety-isolated feedback, and a range of switch options, including 725 V silicon, 1700 V silicon carbide, and now PowiGaN variants in 750 V, 900 V, and 1250 V.
One of the standout features of Power Integrations’ proprietary 1250 V PowiGaN technology is its remarkably low switching losses, measuring less than one-third of those found in equivalent silicon devices at the same voltage. This attribute results in a staggering power conversion efficiency of up to 93%, enabling the creation of highly compact flyback power supplies capable of delivering up to 85 W without the need for a heatsink.
Radu Barsan, the Vice President of Technology at Power Integrations, highlighted the company’s commitment to pushing the boundaries of high-voltage GaN technology. He noted, “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 version of our GaN-based InnoSwitch products. Our ongoing development of higher voltage GaN technology, illustrated here by our new 1250 V devices, extends the efficiency benefits of GaN to an even wider range of applications, including many currently served by silicon-carbide technology.”
Designers incorporating the InnoSwitch3-EP 1250 V ICs into their projects can confidently specify an operating peak voltage of 1000 V, allowing for an industry-standard 80% de-rating from the 1250 V absolute maximum. This substantial headroom is particularly valuable in challenging power grid environments where robustness is essential to defend against grid instability, surges, and other power perturbations.
 power supply integrated circuit (IC). This new release features a remarkable 1250-volt PowiGaN switch. These InnoSwitch3-EP 1250 V ICs represent the latest additions to Power Integrations' InnoSwitch family, designed for off-line constant voltage/constant current (CV/CC) QR flyback switcher ICs.){kind=link}