Flyback switcher integrates 900 V MOSFETs for universal power supplies

Flyback switcher integrates 900 V MOSFETs for universal power supplies

New Products |
By Nick Flaherty

The LinkSwitch-XT2 is aimed at three-phase industrial power supplies to 480 VAC and high-quality consumer products destined for regions with unstable mains grids, tropical regions with frequent lightning strikes or any area with high-energy ring-waves and surges.

The 900 V versions of the LinkSwitch-XT2 IC family are optimised for high efficiency, enabling designs to easily meet Energy Related Products (ErP) limits. The resulting power supplies use less than 30 mW when unloaded and have high conversion efficiency across the load range, suitable for IoT and home and building automation (HBA) systems which spend substantial time in active standby monitoring radio or networking interfaces. The switcher has a selectable current limit and fully integrated auto-restart for short-circuit and open-loop protection and using 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.

“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,” said Silvestro Fimiani, senior product marketing manager at Power Integrations. “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.”

Samples of the 900 V LinkSwitch-XT2 ICs are available now and priced at $0.60 in 10,000-piece quantities.

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