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Power Integrations Introduces Industry’s First Automotive-Qualified High-Voltage Switcher ICs with 1700 V SiC MOSFET

Power Integrations (Nasdaq: POWI), the leader in
high-voltage integrated circuits (ICs) for energy-efficient power conversion, today
announced the addition of two new AEC-Q100 qualified, 1700-volt rated ICs to its
InnoSwitch™3-AQ family. The new devices are the industry’s first automotive-qualified
switching power supply ICs to incorporate a silicon carbide (SiC) primary switching MOSFET.
Delivering up to 70 watts of output power, the new ICs are targeted for use in 600- and
800-volt battery and fuel-cell electric passenger vehicles, as well as electric buses, trucks
and a wide range of industrial power applications.

Highly integrated InnoSwitch ICs reduce the number of components required to implement
a power supply by as much as 50 percent, saving significant circuit-board space, enhancing
system reliability and mitigating component sourcing challenges. Devices from the award-
winning InnoSwitch family are now available with a choice of cost-effective silicon, high-
efficiency gallium nitride (GaN) and high-voltage SiC transistors, permitting designers to
optimize their power solution across a broad range of consumer, computer,
communications, industrial and automotive applications.

Peter Vaughan, director of automotive business development at Power Integrations said:
"800-volt batteries are becoming standard for EVs. Multiple vehicle systems are connected
to this powerful electrical source, yet delicate electronic control circuits require just a few
volts for operation and communication. InnoSwitch devices allow the electronics to safely
sip from the firehose of energy available on the main bus, using minimal board area and
without wasting energy. Most exciting is the opportunity to dramatically simplify the
emergency power supply for the main traction inverter, which may be called upon at a

Power Integrations Introduces Industry’s First Automotive-Qualified
High-Voltage Switcher ICs with 1700 V SiC MOSFET
Page 2
moment’s notice to operate from any voltage between 30 volts and 1000 volts. Our SiC-
based InnoSwitch3-AQ devices handle this vast range with incredible ease.”

Offered in a compact InSOP™-24D package, the new ICs use a FluxLink™ feedback link,
providing reinforced isolation up to 5000 V RMS for secondary-side control. FluxLink technology
enables direct sensing of the output voltage, providing benefits such as accurate regulation
and extremely fast transient response. The circuit will start from 30 volts without external
circuitry – critical for functional safety. Additional protection features include input under-
voltage, output over-voltage and over-current limiting.

The inclusion of synchronous rectification and a quasi-resonant (QR) / CCM flyback
controller achieves greater than 90% efficiency, easily meeting the strictest OEM
requirements. These new parts consume less than 15 mW at no-load, which is ideal for
reducing self-discharge in battery management systems.

The InnoSwitch3-AQ 1700-volt parts are also suitable for industrial markets, where the
integrated solution replaces discrete controller-plus-MOSFET designs, saving space, time
and cost while increasing reliability in applications such as renewables, industrial motor
drives, battery storage and metering.

Availability & Resources
A reference design, DER-913Q, and hardware kit RDK-919Q, are available for designers
wishing to evaluate the InnoSwitch3-AQ 1700-volt IC. Devices are priced at $5.64 for part
number INN3947CQ-TL and $9.02 for part number INN3949CQ-TL in 1,000-unit quantities.
For further information contact a Power Integrations sales representative or one of the
company’s authorized worldwide distributors: Digi-Key, Farnell, Mouser and RS Components,
or visit
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

Power Integrations Introduces Industry’s First Automotive-Qualified
High-Voltage Switcher ICs with 1700 V SiC MOSFET

Media Contact
Linda Williams
Power Integrations

Press Agency Contact
Nick Foot
BWW Communications

Power Integrations, InnoSwitch, FluxLink, InSOP, and the Power Integrations logo are
trademarks or registered trademarks of Power Integrations, Inc. All other trademarks are the
property of their respective owners.

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Thu. July 18th, 2024

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