This document describes an isolated, power factor corrected, very high efficiency LED driver designed to drive a 30 V LED string at a current of 500 mA (nominal). The input voltage range is 90 VAC to 265 VAC.
The LED driver uses a LNK417EG device from the LinkSwitch-PH family of ICs. This integrated controller and 725 V MOSFET dramatically reduces the complexity and component count of the solution.
The key design goals were to achieve the highest possible efficiency and eliminate electrolytic capacitors. Both are key factors for increasing the lifetime and reliability of LED drivers making this solution ideal for industrial and commercial applications.
This document contains the LED driver specification, schematic, bill of material, transformer documentation and typical performance characteristics.
| Manufacturer | Power Integrations |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - AC / Offline |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal |
| Outputs and Type |
1 Isolated
|
| Current Out |
500 mA
|
| Voltage Out (Max) |
33 V
|
| Efficiency @ Conditions |
>90%, 105 ~ 265 VAC, @ 33 V
>90%, 103 ~ 265 VAC, @ 30 V >90%, 100 ~ 265 VAC, @ 27 V |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Frequency Jitter for EMI Open Circuit Protection PFC PFM or PWM Short Circuit Protection Thermal Protection |
| Switching Frequency |
66 kHz
|
| Component Count + Extras |
46 + 0
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting Lighting: LED Signage |
| Voltage In |
90 ~ 265 VAC
|
| Power Factor |
>0.9
|
| Standard(s) |
EN55015 B conducted EMI
IEC 61000-3-2 Class C IEC 61000-4-5 Ringwave IEC950 UL1950 Class II |
| Main I.C. Base Part |
LNK417
|
| Date Created By Author | 2012-08 |
| Date Added To Library | 2025-11 |
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