InnoSwitch3-EP

The InnoSwitch™3-EP family of ICs dramatically simplifies the design and manufacture of flyback power converters, particularly those requiring high efficiency and/or compact size. The InnoSwitch3-EP family incorporate a high-voltage power switch, primary and secondary controllers, and safety-rated feedback into a single IC. These devices incorporate multiple protection features including line over and under-voltage protection, output over-voltage and over-current limiting, and over-temperature shutdown. Devices are available with standard and peak power delivery options, and commonly used auto-restart protection behaviors.

Product Highlights

Highly Integrated, Compact Footprint

• Very high efficiency across full load range
• Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, high-voltage switch, secondary-side sensing and synchronous rectification driver
• Excellent multi-output cross regulation with weighted secondary-side
  regulation (SSR) feedback and synch FETs
• Integrated FluxLink™, HIPOT-isolated, feedback link
• Exceptional CV/CC accuracy, independent of external components
• Adjustable accurate output current sense using external output sense resistor
• PowiGaN™ technology – up to 100 W without heatsinks (INN3678C, INN3679C & INN3670C)

EcoSmart™ – Energy Efficient

• Less than 30 mW no-load including line sense
• Easily meets all global energy efficiency regulations
• Low heat dissipation

Advanced Protection / Safety Features

• Open SR FET-gate detection
• Fast input line UV/OV protection
• Auto-restart fault response for output OVP
• 725/750 V Switch rating series for excellent surge protection
• 900 V Switch rating series for industrial design or extra safety

Optional Features

• Auto-restart output UV protection with option for peak power delivery

Full Safety and Regulatory Compliance

• Reinforced isolation
• Isolation voltage >4000 VAC
• 100% production HIPOT testing
• UL1577 and TUV (EN60950) safety approved
• Excellent noise immunity enables designs that achieve class “A” performance criteria for EN61000-4 suite; EN61000-4-2, 4-3 (30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m) and Ford FMC1278 (RI-115)

Green Package

• Halogen free and RoHS compliant