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.