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 heat sinks (INN3678C,
INN3679C and 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 V and 750 V switch rating series for excellent surge withstand
• 900 V and 1700 V switch rating series for industrial design or extra
safety margin
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 isolation voltage 4000 VAC (max), TUV (EN62368-1),
CQC (GB4943.1) and DIN VDE V 0884-11(4) 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)
Green Package
• Halogen free and RoHS compliant
Applications
• Auxiliary, standby and bias power supplies for appliances, computers
and consumer products
• Utility meter, smart grid and industrial power supplies
Description
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 combines primary and secondary controllers and safety-rated
feedback into a single IC.
InnoSwitch3-EP family devices incorporate multiple protection features
including line over and undervoltage protection, output overvoltage
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.