Highly Integrated, Compact Footprint
• Up to 94% efficiency across full load range
• Quasi-Resonant (QR) / CCM flyback controller, high-voltage switch4,
secondary-side sensing and synchronous rectification driver
• Integrated FluxLink™, HIPOT-isolated, feedback link
• Easily interfaces to load-directed and fast charge protocol ICs
• Constant Power (CP) Profile minimizes charging time with continuous
adjustment of output current and voltage
• Accurate CV/CC/CP, independent of external components
• External IS resistor allows custom CC programming
• Instantaneous transient response with 0%-100%-0% load step
• PowiGaN™ technology – up to 100 W without heat sinks (INN3278C,
INN3279C and INN3270C)
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
• Secondary switch or diode short-circuit protection
• Open SR FET-gate detection
• Fast input line UV/OV protection
Optional Features
• Cable-drop compensation with multiple settings
• Variable output voltage, constant current profiles
• Auto-restart or latching fault response for output OVP/UVP
• Multiple output UV fault thresholds
• Latching or hysteretic primary over-temperature protection
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 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
• High efficiency flyback designs up to 100 W
• USB PD / QC / proprietary protocol chargers
Description
The InnoSwitch™3-CP family of ICs dramatically simplifies the design
and manufacture of flyback power converters, particularly those
requiring high efficiency and/or compact size. The InnoSwitch3-CP
family incorporates primary and secondary controllers and safety-rated
feedback into a single IC.
InnoSwitch3-CP 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 that support the common combinations of latching and
auto-restart behaviors required by applications such as quick charge
and USB PD designs. The devices are available with and without
cable-drop compensation.