Recently, Power Integration has added two more aEC-Q100-compliant 1700V class ics to its InnoSwitch3-AQ series. These two new devices are the industry's first automotive grade switching power SUPPLY IC using SiC main switch MOSFEts. The new IC provides up to 70W of output power for 600V and 800V battery and fuel cell electric passenger cars, electric buses, trucks and a variety of industrial power applications.
The family of devices can now choose from cost-effective silicon, high-efficiency GaN and high-voltage SiC transistors, allowing designers to optimize their power solutions in a wide range of consumer, computer, communications, industrial and automotive applications.
"800V batteries are becoming the standard for electric vehicles," said Peter Vaughan, Director of automotive Business Development at Power Integration. Multiple vehicle systems are connected to this powerful power source, but sophisticated electronic control circuits require several volts of operation and communication. InnoSwitch devices allow electronics to safely draw energy from fire hoses on the main bus, using minimal board area without wasting energy. Most exciting is the opportunity to significantly simplify the emergency power supply for the main traction inverter, which can be called on at any time and operate at any voltage between 30V and 1000V. Our sic based Innoswitch 3-AQ device can easily handle this wide range."
The new integrated circuit uses a compact INSO-24D package and uses FluxLink feedback links to enhance isolation performance of secondary side control up to 5,000 VRMS. FluxLink technology allows direct detection of output voltage, providing the benefits of precise regulation and fast transient response. The circuit will start from 30V without external circuitry - critical for functional safety. Further protection features include input undervoltage, output overvoltage, and overcurrent limits.
These new components consume less than 15mW at no load, making them ideal for reducing self-discharge in battery management systems. The addition of synchronous rectifier and QR/CCM flyback controller enables over 90% efficiency, easily meeting the most stringent OEM requirements
These components are also well suited for the industrial market, where integrated solutions replace discrete controller plus MOSFET designs to save space, time and expense while improving the reliability of applications including renewable energy, industrial motor drives, battery storage and metering.
