1700 V InnoSwitch™3-AQ flyback switcher meets IEC60664-1 isolation standard

Power Integrations (NASDAQ: POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today introduced a wide-creepage package option for its InnoSwitch™3-AQ flyback switcher IC for automotive applications. A wide drain-to-source-pin creepage distance of 5.1 mm eliminates the need for conformal coating, making the IC compliant to the IEC60664-1 standard in 800 V vehicles while simplifying manufacturing and increasing system reliability.

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Power Integrations targets 800 V automotive applications with new wide-creepage switcher IC. 1700 V InnoSwitch™3-AQ flyback switcher meets IEC60664-1 isolation standard. (Photo: Business Wire)

Mike Stroka, product marketing engineer at Power Integrations, said: “Automotive designers rely on the efficiency and low component count of high-voltage power supplies designed around InnoSwitch3-AQ ICs. The increased primary-to-primary creepage and clearance distance between the drain and source pins in the new package provides support for the next generation of EV bus voltages. Power Integrations’ unique InSOP™-28G package enables 1000 VDC to be provided to the primary side, while keeping all other pins safely isolated in pollution degree 2 environments.”

The 1700 V-rated CV/CC InnoSwitch3-AQ switching power supply ICs incorporate a silicon carbide (SiC) primary switch capable of delivering up to 80 watts of output power. The highly integrated ICs reduce the number of components required to implement a power supply by as much as 50 percent, saving space, enhancing system reliability and mitigating component sourcing challenges. An increased drain-pin width is beneficial in withstanding high levels of shock and vibration, especially in eAxle automotive applications.

The new members of the InnoSwitch3-AQ family will start up with as little as 30 volts on the drain without external circuitry—which is critical for functional safety. Additional protection features include input under-voltage, output over-voltage and over-current limiting. Synchronous rectification and a multi-mode valley switching, discontinuous/continuous conduction mode (DCM/CCM) flyback controller deliver greater than 90 percent efficiency. Devices consume less than 15 mW at no-load. Target automotive applications include battery management systems, µDC-DC converters, control circuits and emergency power supplies in the main traction inverter. The new ICs also have improved functionality for remote on/off.

Availability & Resources

Pricing for the new 1700 V-rated InnoSwitch3-AQ switching power supply ICs starts at $6 per unit for 10,000-unit quantities. Sample ICs are available now with full production in the first quarter of 2025. For 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.

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, InnoSwitch, and InSOP are trademarks, service marks or registered trademarks of Power Integrations, Inc. All other trademarks are the property of their respective owner.

Media Contact Linda Williams Power Integrations (408)-414-9837 linda.williams@power.com

Press Agency Contact Nick Foot BWW Communications +44-1491-636 393 nick.foot@bwwcomms.com

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