Power Integrations has added new members to its InnoSwitch3 families of offline CV/CC flyback switcher ICs. The new ICs feature up to 95% efficiency across the full load range and up to 100W in enclosed adapter implementations. It uses an internally developed high-voltage gallium nitride (GaN) switch technology.
Quasi-resonant InnoSwitch3-CP, InnoSwitch3-EP and InnoSwitch3-Pro ICs combine primary, secondary and feedback circuits in a single surface-mounted package. In the new family members, GaN switches replace the traditional silicon high-voltage transistors on the primary side of the IC, reducing conduction losses when current is flowing, and considerably reducing switching losses during operation.
The new InnoSwitch 3 ICs are available now, priced at $4/unit in 10,000-piece quantities.