Power Integrations adds GaN switch ICs to InnoSwithch3 

GaN technology yields a significant increase in power and efficiency for the InnoSwitch3 switching ICs, says Power Integrations.

The new members of the InnoSwitch3 offline CV/CC flyback switcher ICs feature up to 95 per cent efficiency across the full load range and up to 100W in enclosed adapter implementations without requiring a heatsink.

Quasi-resonant InnoSwitch3-CP, InnoSwitch3-EP and InnoSwitch3-Pro ICs combine primary, secondary and feedback circuits in a single surface-mounted package. The new family members are characterised by GaN switches which replace the traditional silicon high-voltage transistors on the primary side of the IC. This reduces conduction losses when current is flowing and reduces switching losses during operation, says Power Integration. This results in less wasted energy and therefore increased efficiency and power delivery from the space-saving InSOP-24D package, claims Power Integrations.

The ICs can be used in high-efficiency flyback designs, such as USB-PD and high-current chargers and adapters for mobile devices, set-top boxes, displays, appliances, networking and gaming products. They provide accurate CV/CC/CP independent of external components and interface to fast-charging protocol ICs, explains Power Integrations.

The InnoSwitch3-CP and ‑EP variants are hardware-configurable, while the InnoSwitch3-Pro incorporates a sophisticated digital interface for software control of CV and CC set points, exception handing and safety-mode options.

Power Integrations’ new InnoSwitch3 ICs are available now, with five reference designs to describe USB-PD chargers from 60 to 100W and the PI Expert, the company’s automated design tool.

Power Integrations specialises in semiconductor technologies for high-voltage power conversion, supplying products that are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications that range from mW to MW.


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