INN2023K Off-Line CV/CC Flyback Switcher IC Reference Design Kit

The INN2023K of ICs dramatically simplifies the development and manufacturing of low-voltage, high current power supplies, particularly those in compact enclosures or with high efficiency requirements. The INN2023K architecture is revolutionary in that the devices incorporate both primary and secondary controllers, with sense elements and a safety-rated feedback mechanism into a single IC.Close component proximity and innovative use of the integrated communication link permit accurate control of a secondary-side synchronous rectification MOSFET and optimization of primary-side switching to maintain high efficiency across the entire load range. Additionally, the minimal DC bias requirements of the link enables the system to achieve less than 10 mW no-load in challenging applications such as smart-mobile device chargers.

• Highly Integrated, Compact Footprint
  • Incorporates fly back controller, 650 V MOSFET, secondary-side sensing and synchronous rectification driver
  • Integrated Flux Link™, HIPOT-isolated, feedback link
  • Exceptional CV/CC accuracy, independent of transformer design or external components
  • Instantaneous transient response ±5% CV with 0%-100%-0% load step
• EcoSmart™- Energy Efficient
  • <10 mW no-load at 230 Vac when supplied by transformer bias winding
  • Easily meets all global energy efficiency regulations
  • Low heat dissipation
• Advanced Protection / Safety Features
  • Primary sensed output OVP
  • Secondary sensed output overshoot clamp
  • Secondary sensed output OCP to zero output voltage
  • Hysteretic thermal shutdown
• Full Safety and Regulatory Compliance
  • 100% production HIPOT compliance testing equivalent to 6 kV DC/1 sec
  • Reinforced insulation
  • Isolation voltage >3, 500 VAC
  • UL1577 and TUV (EN60950) safety approved
  • EN61000-4-8 (100 A/m) and EN61000-4-9 (1000 A/m) compliant
• Green Package
  • Halogen free and RoHS compliant
• Applications
  • Chargers and adapters for smart mobile devices
  • High efficiency, low voltage, high current power supplies
• Output Power 12 W (Adapter)