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InnoSwitch™3-AQ by POWER INTEGRATIONS

InnoSwitch™3-AQ from PI is an AEC-Q100-qualified flyback switcher with integrated 750V MOSFET.

New Highly Integrated Flyback Switcher IC

POWER INTEGRATIONS announced the production release of the InnoSwitch™3-AQ, an AEC-Q100-qualified flyback switcher with integrated 750V MOSFET and secondary-side sensing. The newly qualified device family targets automotive EV applications, such as traction inverter, OBC (On-Board Charger), EMS (energy management DC/DC bus converters) and BMS (Battery Management Systems).



The InnoSwitch™3-AQ uses POWER INTEGRATIONS’ high-speed FluxLink™ coupling to achieve ±3% 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 PSR-based implementations. The integrated 750V MOSFET meets stringent automotive de-rating requirements, and an on-chip synchronous rectifier controller delivers above 90% efficiency at the nominal 400VDC input voltage. Optimized InnoSwitch™3-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 (> 5000m) isolation.



The RDR-840Q reference design kit incorporating the newly released IC demonstrates start-up, shutdown and efficient operation from 30VDC to 550VDC input, as well as fast transient response and a variety of safety and protection features.



InnoSwitch3-AQ ICs are available in the InSOP-24D package.



For further information please have a look at the InnoSwitch™3-AQ datasheet or contact Thomas Berner.

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