Flyback CV/CC LED Driver IC with Integrated High-Voltage Switch and FluxLink Feedback
Data Sheets
LYTSwitch-6 Data Sheet
ECAD Models
Product Details
The LYTSwitch™-6 series family of ICs dramatically simplifies the development and manufacturing of off-line LED drivers, particularly those in compact enclosures or with high efficiency requirements. The LYTSwitch-6 architecture is revolutionary in that the devices incorporate both primary and secondary controllers, with sense elements and a safety-rated feedback mechanism into a single IC.
Close component proximity and innovative use of the integrated communication link, FluxLink, permit accurate control of a secondaryside synchronous rectification MOSFET with Quasi-Resonant switching of primary integrated high-voltage switch to maintain high efficiency across the entire load range.
Product Highlights
Highly Integrated, Compact Footprint
- Up to 94% efficiency across full load range
- Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, high-voltage switch, secondary-side control and synchronous rectification driver
- Integrated FluxLink™, HIPOT-isolated, feedback link
- Exceptional CV/CC accuracy, independent of transformer design or external components
- Adjustable accurate output current sense using external sense resistor
PowiGaN Technology
- PI’s proprietary gallium nitride technology →
- Up to 110 W output without heatsinks
- LYT6078C, LYT6079C & LYT6070C
EcoSmart™ – Energy Efficient
- Less than 15 mW no-load including line sense (without PF front end)
- Designs using LYTSwitch-6 easily meet Energy Star and all global lighting energy efficiency regulations
- Low heat dissipation
Advanced Protection / Safety Features
- Input line OV with Cauto-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
- 100% production HIPOT compliance testing
- UL1577 and TUV (EN60950, EN62368) safety approved
Green Package
- Halogen free and RoHS compliant
Applications
Power Table
| Output Power Table | |||
|---|---|---|---|
| Product²,³ | 277 VAC ± 15% | 85-305 VAC | 380 VDC / 450 VDC |
| Open Frame¹ | Open Frame¹ | Open Frame¹ | |
| LYT6063C/6073C | 15 W | 12 W | 25 W |
| LYT6065C/6075C | 30 W | 25 W | 40 W |
| LYT6067C/6077C | 50 W | 45 W | 60 W |
| LYT6068C | 65 W | 55 W | |
| Product² | 750 V PowiGaN Switch | ||
| LYT6078C | 75 W | 65 W | 90 W |
| LYT6079C | 85 W | 75 W | 100 W |
| LYT6070C | 95 W | 85 W | 110 W |
Notes:
- Minimum continuous power in a typical non-ventilated and PCB size measured at 40 °C ambient. Max output power is dependent on the design and must ensure that package temperature is < 125 °C.
- Package: InSOP-24D
- 650 V MOSFET (LYT606x); 725 V MOSFET (LYT607x)
Product Documents
Articles and Whitepapers
Design Examples
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