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
- Ideal for Isolated and Non-Isolated Applications
- Flybacks with positive and negative output rails
- Incorporates a multi-mode Quasi Resonant (QR) / CCM flyback controller, 725 V primary MOSFET, secondary voltage and current sensing, SR driver
- Integrated FluxLink™ feedback
- Compact package reduces PCB area
- High efficiency across load range
- Accurate CV/CC independent of transformer design or external components
- Easily meets 20% regulation limit on 5 V output during zero load to full-load transients
Applications
- Smart and small consumer electronics and appliances, industrial, and metering
Applications - InnoSwitch3-TN
Key components
- 725V primary MOSFET
- Primary & Secondary flyback controller
- FluxLink™ Communication channel
- Compact MinSOP Package
Diagram
Schematic - InnoSwitch3-TN