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The devices include ICs for high-efficiency isolated fly-back power supplies and for simple non-isolated buck converters.
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Applications include three-phase industrial power supplies up to 480Vac, and high-quality consumer products destined for regions with unstable mains grids, tropical regions with frequent lightning strikes or any area where high-energy ring-waves and surges are prevalent.
They include 900V versions of the LinkSwitch-TN2 ICs for simple, non-isolated buck converters plus three new members of the flagship InnoSwitch3-EPIC family, which enable extremely high-efficiency isolated fly-backs up to 35W.
All members of the 900V product families feature internal control engines optimised for high efficiency across load, enabling designs to easily meet energy-related products (ErP) limits, and a variety of line and load protection mechanisms to further enhance system robustness and reliability.
The 900V LinkSwitch-TN2 ICs deliver the lowest-component-count switcher solutions for buck converters. Devices 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 DRAIN and all other pins both on the PCB and at the package.
The 900 V InnoSwitch3-EP fly-back switcher ICs provide lossless line over-voltage protection (OVP) sensing, which automatically interrupts switching when line voltages exceed a selected threshold, preventing damage to the power supply during severe line over-voltage situations.
Devices achieve efficiencies of up to 90% across line and load conditions, reducing power supply losses and resulting in compact power supplies up to 35W without heatsinks.
The 900V InnoSwitch3-EP ICs employ Power Integrations’ isolated digital communications technology, FluxLink, plus synchronous rectification, quasi-resonant switching and a secondary-side feedback sensing and control circuit. This results in highly efficient, accurate, reliable power supply circuits without the need for opto-couplers.
Samples of the 900 V InnoSwitch3-EP ICs are available now, priced at $1.18 for 10,000-piece quantities. Samples of 900 V LinkSwitch-TN2 ICs are also available priced at $0.60 for 10,000-pieces orders.
Technical support for the 900V family of ICs is available from this page on the Power Integrations website.
