InnoSwitch3-CP Family Off-Line CV/CC QR Flyback Switcher IC with Integrated 650 V / 725 V MOSFET, Synchronous Rectification, FluxLink Feedback and Constant Power Profile. For Applications up to 65 W Product Highlights Highly Integrated, Compact Footprint SR FET Up to 94% efficiency across full load range 4 Quasi-Resonant (QR) / CCM flyback controller, 650 V or 725 V MOSFET , secondary-side sensing and synchronous rectification driver Integrated FluxLink, HIPOT-isolated, feedback link D V Easily interfaces to load-directed and fast charge protocol ICs InnoSwitch3-CP VOUT Constant Power (CP) Profile minimizes charging time with continuous Primary MOSFET and Controller adjustment of output current and voltage S BPP IS Secondary Accurate CV/CC/CP, independent of external components Control IC External IS resistor allows custom CC programming PI-8322-090517 Instantaneous transient response with 0%-100%-0% load step Figure 1. Typical Application Schematic. EcoSmart Energy Efficient Less than 15 mW no-load including line sense Easily meets all global energy efficiency regulations Low heat dissipation Advanced Protection / Safety Features Secondary MOSFET or diode short-circuit protection Figure 2. High Creepage, Safety-Compliant InSOP-24D Package. 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 VPK Full Safety and Regulatory Compliance Reinforced isolation Isolation voltage >4000 VAC 100% production HIPOT testing CC set by IS pin resistor (R ) UL1577 and TUV (EN60950) safety approved S Excellent noise immunity enables designs that achieve class A performance criteria for EN61000-4 suite EN61000-4-2, 4-3 Output Current (A) (30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m) Figure 3. Typical Constant Power Characteristics. Green Package Halogen free and RoHS compliant Output Power Table Applications 230 VAC 15% 85-265 VAC High efficiency flyback designs up to 65 W 3,4 Product Open Open 1 1 USB PD / QC / proprietary protocol chargers Adapter Adapter 2 2 Frame Frame Description INN3264C/3274C 20 W 25 W 15 W 20 W The InnoSwitch3-CP family of ICs dramatically simplifies the design INN3265C/3275C 25 W 30 W 22 W 25 W and manufacture of flyback power converters, particularly those INN3266C/3276C 35 W 40 W 27 W 36 W requiring high efficiency and/or compact size. The InnoSwitch3-CP INN3277C 40 W 45 W 36 W 40 W family incorporates primary and secondary controllers and safety-rated feedback into a single IC. INN3267C 45 W 50 W 40 W 45 W InnoSwitch3-CP family devices incorporate multiple protection features INN3268C 55 W 65 W 50 W 55 W including line over and under-voltage protection, output over-voltage Table 1. Output Power Table. and over-current limiting, and over-temperature shutdown. Devices are Notes: available that support the common combinations of latching and 1. Minimum continuous power in a typical non-ventilated enclosed adapter auto-restart behaviors required by applications such as quick charge measured at 40 C ambient. (package temperature <125 C). 2. Minimum peak power capability. and USB PD designs. The devices are available with and without 3. Package: InSOP-24D. cable-drop compensation. 4. 650 V MOSFET (INN326x) 725 V MOSFET (INN327x). www.power.com August 2018 This Product is Covered by Patents and/or Pending Patent Applications. Output Voltage (V) FWD SR GND BPS FB PI-8321-082317InnoSwitch3-CP DRAIN UNDER/OVER PRIMARY BYPASS (D) INPUT VOLTAGE (V) (BPP) PRIMARY BYPASS REGULATOR ENABLE ENABLE FAULT AUTO-RESTART PRIMARY LINE COUNTER GATE BYPASS PIN BPP/UV INTERFACE RESET UNDERVOLTAGE PRIMARY BPP/UV BYPASS PIN PRIM-CLK CAPACITOR SELECT AND UV/OV CURRENT V SHUNT OSCILLATOR/ LIMIT V V ILIM BP+ GATE TIMERS JITTER t t ON(MAX) OFF(BLOCK) GATE THERMAL SHUTDOWN GATE PRIM/SEC FAULT SecREQ OV/UV BPP From LATCH-OFF SecPulse Secondary SenseFET PRIM/SEC Controller Power Q S MOSFET Q R RECEIVER SEC- DRIVER CONTROLLER LATCH BPP/UV t LEB OFF(BLOCK) I S PRIM-CLK ILIM + LATCH-OFF PRIMARY OVP V - ILIM LATCH t ON(MAX) PI-8044-083017 SOURCE (S) Figure 4. Primary Controller Block Diagram. FORWARD SYNCRONOUS RECTIFIER DRIVE OUTPUT VOLTAGE (FWD) (SR) (VOUT) SR CONTROL REGULATOR FORWARD 4.4 V INH ENABLE BPS SECONDARY UV VOUT SR BYPASS (BPS) DETECTOR 4.4 V S Q 3.9 V + R Q SR THRESHOLD QR HANDSHAKE/ SECONDARY LATCH-OFF LATCH INH CONTROL DCM To FEEDBACK Primary (FB) Receiver INH FEEDBACK DRIVER VREF QR CABLE DROP COMPENSATION/ FEEDBACK COMPENSATION Ts MAX V PK CONSTANT t OFF(MIN) POWER t SECINH(MAX) OSCILLATOR/ IS THRESHOLD TIMER t SS(RAMP) SECONDARY ISENSE GROUND (IS) (GND) PI-8045a-091217 Figure 5. Secondary Controller Block Diagram. 2 Rev. D 08/18 www.power.com - + - + - + - +