Datasheet LYTSwitch-6 (Power Integrations)

LYTSwitch-6
Family Flyback CV/CC LED Driver IC with Integrated 650 V / 725 V MOSFET and FluxLink Feedback
Product Highlights Highly Integrated, Compact Footprint
• Up to 94% efficiency across full load range SR FET • Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, 650 V or 725 V MOSFET, secondary-side control and synchronous rectification driver • Integrated FluxLink™, HIPOT-isolated, feedback link • Exceptional CV/CC accuracy, independent of transformer design or external components
D V FWD SR GND BPS FB LYTSwitch-6
• Adjustable accurate output current sense using external sense resistor
VOUT
Optional Primary FET Current
EcoSmart™ – Energy Efficient
and Controller Sense • Less than 15 mW no-load including line sense (without PF front end)
S BPP IS
Secondary Control IC • Easily meets Energy Star and all global lighting energy efficiency regulations • Low heat dissipation PI-8375-072817
Advanced Protection / Safety Features
Figure 1. Typical Application/Performance. • 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
Full Safety and Regulatory Compliance
• Reinforced insulation • Isolation voltage >4000 VAC Figure 2. High Creepage, Safety-Compliant InSOP-24D Package. • 100% production HIPOT compliance testing • UL1577 and TUV (EN60950) safety approved
Green Package
• Halogen free and RoHS compliant
Output Power Table Applications
277 VAC ± 15% 85-305 VAC 380 VDC / 450 VDC2 • Isolated off-line LED driver
Product3
• Smart LED lighting
Open Frame1 Open Frame1 Open Frame1
• High-voltage flyback post regulator
Description LYT6063C/6073C
15 W 12 W 25 W The LYTSwitch™-6 series family of ICs dramatical y simplifies the
LYT6065C/6075C
30 W 25 W 40 W development and manufacturing of off-line LED drivers, particularly those in compact enclosures or with high efficiency requirements.
LYT6067C/6077C
50 W 45 W 60 W The LYTSwitch-6 architecture is revolutionary in that the devices
LYT6068C
65 W 55 W incorporate both primary and secondary control ers, with sense 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 and PCB size measured communication link, FluxLink, permit accurate control of a secondary- at 40 °C ambient. Max output power is dependent on the design. With side synchronous rectification MOSFET with Quasi-Resonant switching condition that package temperature must be < 125 °C. of primary integrated high-voltage MOSFET to maintain high efficiency 2. With 725 V FET only. 3. Package: InSOP-24D. across the entire load range. www.power.com February 2018 This Product is Covered by Patents and/or Pending Patent Applications. Document Outline Product Highlights Description Output Power Table Pin Functional Description LYTSwitch-6 Functional Description Primary Controller Secondary Controller Application Example Key Applications Design Considerations Primary-Side Components of LYTSwitch-6 Secondary-Side Components of f LYTSwitch-6 Recommendations for Circuit Board Layout Recommended Position of InSOP-24D Package with Respect to Transformer Quick Design Checklist Other Applications Design Example PCB Layout Example 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