High-Efficiency Flyback Switcher ICs with Integrated 900 V MOSFETs


Power Integrations’ new LinkSwitch-XT2 offline switcher ICs target three-phase 480 V industrial applications and appliance auxiliary power supplies for regions with unstable mains voltage

Power Integrations launched LinkSwitch-XT2 offline switcher ICs incorporating 900 V power MOSFETs. Targeting high-efficiency isolated and non-isolated flyback power supplies up to 8 W, the ICs are suitable for three-phase industrial power supplies to 480 VAC and high-quality consumer products. The products suit regions with unstable mains grids, tropical regions with frequent lightning strikes or any area where high-energy ring-waves and surges are prevalent.


The LinkSwitch-XT2 IC family with 900V are optimized for high efficiency, enabling designs to easily meet Energy Related Products (ErP) limits. Less than 30 mW is used by LinkSwitch-XT2 power supplies when unloaded and have high conversion efficiency across the load range. These features makes it ideal for IoT and home and building automation (HBA) systems which spend most of the time in active standby monitoring radio or networking interfaces.

The ICs feature selectable current limit and fully integrated auto-restart for short-circuit and open-loop protection. The use of frequency jittering greatly reduces EMI and devices easily meet high-voltage creepage and clearance requirements between the DRAIN and all other pins both on the PCB and on the package.

Comments senior product marketing manager Silvestro Fimiani: “These switching power ICs enable designers of three-phase utility meters, motors, industrial auxiliary power supplies, appliances and IoT/HBA sensors and actuators to realize a truly ‘one-world’ power supply that meets the reliability expectations of users everywhere. For example, OEMs addressing the burgeoning market in India for high-quality consumer products suffer a continuous stream of electrically damaged and returned products that must be serviced or replaced. 900 V LinkSwitch-XT2 switcher ICs provide effective and inexpensive protection with a commensurate reduction in operating and product-support costs.”

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900 V LinkSwitch-XT2 Ics samples are available now at a priced of $0.60 in 10,000-piece quantities.



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