InnoSwitch-CH Family Off-Line CV/CC Flyback Switcher IC with Integrated 650 V MOSFET, Synchronous Recticfi ation and Feedback Product Highlights Highly Integrated, Compact Footprint Incorporates flyback controller, 650 V MOSFET, secondary-side SR FET sensing and synchronous rectification driver Integrated FluxLink , HIPOT-isolated, feedback link Exceptional CV/CC accuracy, independent of transformer design or external components I nstantaneous transient response 5% CV with 0%-100%-0% load step D InnoSwitch-CH EcoSmart Energy Efficient VOUT Primary FET and Controller < 10 mW no-load at 230 VAC when supplied by transformer bias Secondary winding Control IC S BPP IS Easily meets all global energy efficiency regulations L ow heat dissipation Advanced Protection / Safety Features PI-6986-103014 Primary sensed output OVP Figure 1. Typical Application/Performance. Secondary sensed output overshoot clamp Secondary sensed output OCP to zero output voltage H ysteretic thermal shutdown Full Safety and Regulatory Compliance 100% production HIPOT compliance testing equivalent to 6 kV DC/1 sec Reinforced insulation Isolation voltage >3,500 VAC U L1577 and TUV (EN60950) safety approved Figure 2. High Creepage, Safety-Compliant eSOP Package. EN61000-4-8 (100 A/m) and EN61000-4-9 (1000 A/m) compliant Green Package H alogen free and RoHS compliant Applications Output Power Table C hargers and adapters for smart mobile devices High efficiency, low voltage, high current power supplies 85-265 VAC 3,4 Description Product Peak or 1 Adapter 2 Open Frame The InnoSwitch -CH family of ICs dramatically simplifies the develop- ment and manufacturing of low-voltage, high current power supplies, INN20x3K 12 W 15 W particularly those in compact enclosures or with high efficiency require - INN20x4K 15 W 20 W ments. The InnoSwitch-CH architecture is revolutionary in that the devices incorporate both primary and secondary controllers, with sense INN20x5K 20 W 25 W elements and a safety-rated feedback mechanism into a single IC. Table 1. Output Power Table. Notes: Close component proximity and innovative use of the integrated 1. Minimum continuous power in a typical non-ventilated enclosed typical size communication link permit accurate control of a secondary-side adapter measured at 40 C ambient. Max output power is dependent on the synchronous rectification MOSFET and optimization of primary-side design. With condition that package temperature must be < = 125 C. switching to maintain high efficiency across the entire load range. 2. Minimum peak power capability. 3. Package: eSOP-R16B. Additionally, the minimal DC bias requirements of the link enables the 4. x = 0 (No cable compensation), x = 2 (6% cable compensation). system to achieve less than 10 mW no-load in challenging applications such as smart-mobile device chargers. www.power.com October 2017 This Product is Covered by Patents and/or Pending Patent Applications. FWD SR GND BPS FBInnoSwitch-CH PRIMARY BYPASS DRAIN (BPP) (D) REGULATOR 5.95 V FAULT BYPASS PIN PRESENT UNDERVOLTAGE + AUTO- BYPASS - RESTART CAPACITOR COUNTER 5.95 V SELECT AND V I 5.39 V LIMIT CURRENT RESET LIMIT STATE MACHINE CURRENT LIMIT COMPARATOR JITTER CLOCK THERMAL DC MAX SHUTDOWN OSCILLATOR FROM PRI/SEC FEEDBACK DRIVER RECEIVER S Q CONTROLLER PULSE DCMAX S R Q 6.4 V LEADING EDGE OVP BLANKING LATCH 20 SOURCE PI-7432-110414 (S) Figure 3. Primary-Side Controller Block Diagram. OUTPUT VOLTAGE FORWARD (V ) (FWD) O REGULATOR 4.45 V DETECTOR SCONDARY BYPASS HAND SHAKE (BPS) PULSES + CONTROL 4.45 V - 3.80 V FEEDBACK (FB) + - TO CABLE RECEIVER COMPENSATION FEEDBACK DRIVER ISENSE (IS) + - CLOCK IS THRESHOLD OSCILLATOR ENABLE SR SYNC RECT (SR) ENB Q S Q R SECONDARY GROUND (GND) SR THESHOLD PI-7433-092717 Figure 4. Secondary-Side Controller Block Diagram. 2 Rev. J 10/17 www.power.com - + + -