LYTSwitch-6 Family Flyback CV/CC LED Driver IC with Integrated High-Voltage Switch and FluxLink Feedback Product Highlights Highly Integrated, Compact Footprint • Up to 94% efficiency across full load range • Incorporates a multi-mode Quasi-Resonant (QR) / CCM / DCM flyback SR FET controller, high-voltage switch, secondary-side control and synchro- nous rectification driver • Integrated FluxLink™, HIPOT-isolated, feedback link • Exceptional CV/CC accuracy, independent of transformer design or external components DVFWDSRGNDBPSFB • Adjustable accurate output current sense using external sense resistor LYTSwitch-6 Optional • PowiGaN™ technology – up to 100 W without heatsinks (LYT6079C VOUT Primary Switch Current and Controller and LYT6070C) Sense SBPPISEcoSmart™ – Energy Efficient Secondary Control IC • Less than 30 mW no-load including line sense (without PF front end) • Designs using LYTSwitch-6 easily meet Energy Star and all global PI-8375-112718 lighting energy efficiency regulations Figure 1. Typical Application/Performance. • Low heat dissipation Advanced Protection / Safety Features • Input line OV with auto-restart • Output fault OVP/UVP with auto-restart • Open SR FET gate detection • Input voltage monitor with accurate brown-in • Thermal foldback ensures that power continues to be delivered (lower level) at elevated temperatures Figure 2. High Creepage, Safety-Compliant InSOP-24D Package. Full Safety and Regulatory Compliance • Reinforced insulation • Isolation voltage >4000 VAC Output Power Table • 100% production HIPOT compliance testing • UL1577 and TUV (EN 60950) 277 VAC ± 15% 85-305 VAC 380 VDC / Green PackageProduct2,3 450 VDC2 • Halogen free and RoHS compliant Open Frame1 Open Frame1 Open Frame1ApplicationsLYT6063C/6073C 15 W 12 W 25 W • Isolated off-line LED driver LYT6065C/6075C 30 W 25 W 40 W • Smart LED lighting • High-voltage flyback post regulator LYT6067C/6077C 50 W 45 W 60 W DescriptionLYT6068C 65 W 55 W The LYTSwitch™-6 series family of ICs dramatical y simplifies the development and manufacturing of off-line LED drivers, particularly LYT6079C 85 W 75 W 100 W those in compact enclosures or with high efficiency requirements. The LYTSwitch-6 architecture is revolutionary in that the devices LYT6070C 95 W 85 W 110 W incorporate both primary and secondary control ers, with sense Table 1. Output Power Table. elements and a safety-rated feedback mechanism into a single IC. Notes: Close component proximity and innovative use of the integrated 1. Minimum continuous power in a typical non-ventilated and PCB size measured at 40 °C ambient. Max output power is dependent on the design. With communication link, FluxLink, permit accurate control of a secondary- condition that package temperature must be < 125 °C. side synchronous rectification MOSFET with Quasi-Resonant switching 2. Package: InSOP-24D. of primary integrated high-voltage switch to maintain high efficiency 3. LYT606x ‒ 650 V MOSFET, LYT607x ‒ 750 V MOSFET, LYT6079 and across the entire load range. LYT6070 ‒ 750 V PowiGaN switch. www.power.com August 2019 This Product is Covered by Patents and/or Pending Patent Applications. Document Outline Product Highlights Description Output Power Table LYTSwitch-6 Functional Description Primary Controller Secondary Controller Absolute Maximum Ratings Thermal Resistance Key Electrical Characteristics Typical Performance Curves InSOP-24D Package Drawing MSL Table ESD and Latch-Up Table Part Ordering Information
