Latest InnoSwitch flyback switcher IC targets EV applications

Qualified to AEC-Q100, the InnoSwitch3-AQ is the latest flyback switcher from Power Integrations. It has an integrated 750V MOSFET and secondary side sensing.

The InnoSwitch3-AQ uses Power Integrations’ high-speed FluxLink coupling to achieve ± three per cent accuracy for combined line and load regulation while eliminating both dedicated isolated transformer sense-windings and optocouplers.

FluxLink technology maintains output voltage regulation even under the transient stress test, which is particularly challenging for primary side regulation (PSR) -based implementations, advises Power Integrations.

The integrated 750V MOSFET meets stringent automotive de-rating requirements, and an on-chip synchronous rectifier controller delivers above 90 per cent efficiency at the nominal 400VDC input voltage.

According to the company, optimized InnoSwitch3-AQ designs achieve less than 10mW no-load energy usage across the input voltage range.

The InnoSwitch3-AQ family ICs are packaged in a surface-mount InSOP with 11mm primary to secondary creepage, which exceeds the stringent requirements for high altitude ( above 5000m) isolation.

The IC device family targets automotive electric vehicle (EV) applications, such as traction inverter, on-board charger, energy management DC/DC bus converters and battery management systems (BMS).

The DER-840Q reference design incorporates the InnoSwitch3-AQ IC demonstrates start-up, shutdown and efficient operation from 30 to 550V DC input, as well as fast transient response.

InnoSwitch3-AQ ICs are available in the InSOP-24D package. Devices are available now and technical support for the chipset is available from the company’s website.

Power Integrations is an innovator in semiconductor technologies for high voltage power conversion. The company’s products are used 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 mW to MW

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