New GaN-based ICs combine AC-DC and DC-DC stages into a single power converter; cut power system losses by up to 50 percent

APEC 2024 – Power Integrations (NASDAQ: POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced the InnoMux™-2 family of single-stage, independently regulated multi-output offline power-supply ICs. InnoMux-2 ICs consolidate AC-DC and downstream DC-DC conversion stages into a single chip, providing up to three independently regulated outputs for use in white goods, industrial systems, displays and other applications requiring multiple voltages. Elimination of separate DC-DC stages slashes component count, reduces PCB footprint and increases efficiency by as much as 10 percentage points compared to traditional two-stage architectures. Efficiency is aided by the ICs’ 750 V PowiGaN™ gallium-nitride transistors, zero-voltage switching (without an active clamp) and synchronous rectification.

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Power Integrations launches InnoMux-2, a new GaN-based switcher IC family with multiple, independently regulated outputs (Graphic: Business Wire)

Roland Saint-Pierre, vice president of product development at Power Integrations said: “Most modern electronic systems rely on multiple internal voltages to operate various functions such as computing, communication and actuation function – typically heat, light, sound or motion of some kind. But losses in each conversion stage are compounded, degrading system performance and generating heat. The InnoMux-2 IC overcomes this challenge by providing up to three independently regulated voltage outputs or two voltage output and a constant current output from a single stage, achieving a compact and efficient power sub-system with low component count.”

InnoMux-2 ICs deliver up to 90 watts of output power with accurate regulation of better than ±3 percent across the full input line, load, temperature and differential current step conditions. Total power system efficiency (AC to regulated low-voltage DC segment) is above 90 percent; the advanced InnoMux-2 controller also manages light-load power delivery, avoiding the need for pre-load resistors and reducing no-load consumption to less than 30 mW. This conserves power for necessary functionality in applications subject to the 300 mW allowance for standby usage under the European energy-using product (EuP) regulations.

InnoMux-2 devices leverage Power Integrations’ thermally efficient InSOP™24 and InSOP™28 packages with PCB cooling, so no heatsink is required. Device options include dual- and three-output constant voltage (CV); optionally, one output may be dedicated to constant current (CC) drive, suitable for powering LEDs in displays or for high-speed charging of an internal battery.

Typical applications include TVs, monitors, appliances, networking, home and building automation, LED emergency lighting and industrial power supplies.

Availability & Resources

Pricing for InnoMux-2 IMX2174F devices starts at $1.11 for 50,000-unit quantities. Data sheets, three reference design reports and an introduction video are immediately available for download or viewing:

• InnoMux2-EP family data sheet
• InnoMux2-BL family data sheet
• IML204DG data sheet (four-channel LED backlight controller IC to partner with InnoMux2-BL for computer monitors)
• DER-714: a 52 W TV design with one CV and one CC output;
• DER-715: a 23 W monitor design with one CV and four CC outputs; and
• DER-716: a 62 W industrial and appliance design with three CV outputs.
• InnoMux-2 introduction video

For further information, contact a Power Integrations sales representative, or visit power.com.

About Power Integrations

Power Integrations, Inc. is a leading innovator in semiconductor technologies for high-voltage power conversion. The company’s products are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications ranging from milliwatts to megawatts. For more information, please visit www.power.com.

Power Integrations, the Power Integrations logo, InnoMux, InSoP and PowiGaN are trademarks, service marks or registered trademarks of Power Integrations, Inc. All other trademarks are the property of their respective owner.

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