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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
InnoSwitchT3-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 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 InSOPT-24D package, the new ICs use a FluxLinkT
feedback link, providing reinforced isolation up to 5000 VRMS 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

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

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

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, 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

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