LYT6079C-H127
Flyback CV/CC LED Driver IC with Integrated High-Voltage Switch and FluxLink Feedback
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 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
- 100% production HIPOT compliance testing
- UL1577 and TUV (EN60950, EN62368) safety approved
Green Package
- Halogen free and RoHS compliant
Specifications
| Power - Output (Max, 277V) | 75.00 W |
| Power - Output (Max, Univ) | 85.00 W |
| Power - Output (Max, VDC) | 100.00 W |
| Current Limit (Standard) | 3.80A |
| Current Limit (Increased) | 4.26A |
| Switching Frequency (max) | 132 kHz |
| Breakdown Voltage | 750 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 305 V |
| Voltage Input (Max, DC) | 450.00V |
| Voltage Input (Min, DC) | 380.00V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| Undervoltage Brown-In Threshold | 80.00µA |
| Undervoltage Brown-Out Threshold | 70.00µA |
| IC Package | InSOP-24D |
| Internal Switch | Yes |
| Over-Temperature Response | Hysteretic |
| Power Factor | High |
| PowiGaN? | Yes |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Fluxlink |
| Control Features |
Quasi-Resonant/CCM
Synchronous Rectification
Selectable Current Limit
Frequency Jittering
Soft Start
Auto-Restart/Latching Fault Response
Dimmable
|
| Dimming Interface |
0-10 V
Analog
PWM
|
| Protection Features |
Input Overvoltage
Open SR FET Detection
Output Overvoltage
Output Undervoltage
Overtemperature
Thermal Foldback
|
| Output Profile | CV/CC |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
