InnoSwitch3 ICs combine primary, secondary and feedback circuits in a single surface-mounted off-line flyback switcher IC. The devices feature PowiGaN technology and FluxLink feedback which eliminates the need for an optocoupler.
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 and switching losses. This results in substantially increased power efficiency and delivery and high resistance to line surges and swells in a space-saving InSOP-24D package.
Features
- Up to 75 W
- Up to 95% energy efficient
- Less than 30 mW no-load
- 750 V primary switch
- CV/CC/CP
- Advanced flyback and SR controller
- Advanced protection / safety features
- Comprehensive fault reporting (Pro device)
- Digital interface for software control of CV and CC setpoints (Pro device)
Target applications
- Multiprotocol adapters such as USB PD
- High-current chargers/adapters
- Industrial power supplies
- Appliances
- Utility meters)
Key Components
- Advanced flyback and SR controller
- Integrates primary-side switch, primary- and secondary-side controller, and FluxLink isolated feedback link into a single IC
- Advanced protection / safety and fault reporting
- Digital control interface (Pro device)
Benefits
- Eliminates heat sinks
- Simplifies power conversion designs
- Reduces BOM count
- Enables highly compact form factors
- Enhances system reliability and robustness
- Minimizes no-load power consumption
Diagram
Schematic - InnoSwitch3-Pro