Innovations Power Integrations launches 900V GaN flyback switcher ICs

Power Integrations, a leading provider of innovative power conversion solutions, has recently launched a new series of 900-volt gallium-nitride (GaN) flyback switcher ICs as an extension to their InnoSwitch3™ family.
These new ICs, based on the company's PowiGaN™ technology, provide up to 100 watts with an efficiency of better than 93%, making them an ideal choice for industrial applications and 400-volt-system automotive power supplies.

According to Balu Balakrishnan, CEO of Power Integrations, “Our new 900-volt PowiGaN switch provides higher power and design margin than other silicon-based converters. We are delighted to offer this breakthrough technology to designers of industrial and automotive power supplies.”
One of the key advantages of the InnoSwitch3 design is its remarkable light-load efficiency, which makes it a perfect choice for supplying auxiliary power in electric vehicles during low-power sleep modes. The 900-volt PowiGaN switch offers higher power and increased design margin, which is necessary for 12-volt battery-replacement systems, and improved efficiency over silicon-based converters, making it an especially good fit for electric vehicles based on 400-volt bus systems.

As Balakrishnan explains, “GaN technology from Power Integrations provides more power, which aligns with the rising power requirements of EV makers.”
Moreover, the 900-volt PowiGaN switch is highly suitable for industrial applications such as auxiliary power supply units (PSUs) in servers, three-phase motors, and appliances, where extra power and improved efficiency are required. The new 900-volt components offer a greater safety margin suited for countries with fluctuating line voltages and are pin-for-pin compatible with the 725-volt and 750-volt InnoSwitch3-EP components currently available.

The new 900-volt InnoSwitch3-EP and InnoSwitch3-AQ off-line CV/CC flyback switcher ICs are equipped with synchronous rectification, a valley switching discontinuous conduction mode (DCM), and continuous conduction mode (CCM) flyback controller. The IC package can bridge the isolation barrier thanks to FluxLink™ communication technology, which maximizes efficiency and eliminates the need for optocouplers.

InnoSwitch3-EP ICs can produce up to 100 watts (230 VAC plus or minus 15%) without heat sinks thanks to PowiGaN technology. Devices using the InnoSwitch3-EP platform feature several integrated protective features, such as line over- and under-voltage protection, output over-voltage and over-current limiting, and over-temperature shutdown.

Devices are available with standard and peak power delivery options. Similarly to the well-liked 1700-volt silicon-carbide InnoSwitch3-AQ ICs already utilized in 800-volt EV systems, automotive InnoSwitch3-AQ devices can deliver 100 watts from a 400-volt bus and offer performance and protective features.
In summary, Power Integrations' new 900-volt PowiGaN switch offers higher power and increased design margin over silicon-based converters, making it an ideal choice for industrial and automotive power supplies. Its remarkable light-load efficiency also makes it a perfect choice for supplying auxiliary power in electric vehicles during low-power sleep modes.

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