Summary
- Power Integrations introduces wide-creepage package option for InnoSwitch3-AQ flyback switcher IC for automotive applications
- Creepage distance of 5.1 mm eliminates need for conformal coating, making IC compliant with IEC60664-1 standard
- ICs incorporate SiC primary switch capable of delivering up to 80 watts of output power
- Target automotive applications include battery management systems, DC-DC converters, control circuits, and emergency power supplies
- ICs start up with as little as 30 V on the drain without external circuitry, with additional protection features
Article
Power Integrations, a US-based company specializing in high-voltage integrated circuits for energy-efficient power conversion, has introduced a wide-creepage package option for its InnoSwitch3-AQ flyback switcher IC designed for automotive applications. This new package option features a wide drain-to-source-pin creepage distance of 5.1 mm, eliminating the need for conformal coating and ensuring compliance with the IEC60664-1 standard in 800 V vehicles. The implementation of this package option simplifies manufacturing processes and enhances system reliability for automotive applications.
The InnoSwitch3-AQ switching power supply ICs are rated for up to 1,700 volts and incorporate a silicon carbide (SiC) primary switch capable of delivering up to 80 watts of output power. These highly integrated ICs reduce the number of components required in a power supply system by as much as 50%, saving space, improving system reliability, and addressing component sourcing challenges. The increased drain-pin width of the ICs enhances their ability to withstand high levels of shock and vibration, particularly in eAxle automotive applications.
Target automotive applications for the InnoSwitch3-AQ ICs include battery management systems, µDC-DC converters, control circuits, and emergency power supplies in the main traction inverter. The ICs can start up with as little as 30 volts on the drain without the need for external circuitry, which is crucial for ensuring functional safety in automotive systems. Additional protection features include input under-voltage, output overvoltage, and overcurrent limiting, further enhancing the reliability and performance of the ICs in automotive applications.
According to Mike Stroka, a product marketing engineer at Power Integrations, automotive designers rely on the efficiency and low component count of high-voltage power supplies utilizing InnoSwitch3-AQ ICs. The increased primary-to-primary creepage and clearance distance between the drain and source pins in the new package option support the next generation of electric vehicle (EV) bus voltages. The InSOP™-28G package enables the provision of 1,000 volts DC to the primary side while maintaining safe isolation of all other pins in pollution degree 2 environments, demonstrating the advanced capabilities and safety features of the InnoSwitch3-AQ ICs.
In conclusion, Power Integrations has introduced a new wide-creepage package option for its InnoSwitch3-AQ flyback switcher ICs, specifically designed for automotive applications. These ICs offer a wide drain-to-source-pin creepage distance, high voltage ratings, and advanced silicon carbide primary switches, making them ideal for various automotive power conversion systems. With features such as increased system reliability, reduced component count, and enhanced protection mechanisms, the InnoSwitch3-AQ ICs cater to the evolving needs of automotive designers seeking efficient, reliable, and safe power supply solutions for electric vehicles and other automotive applications.
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