This document is an engineering report describing a non-isolated LED driver (power supply) utilizing a LNK458KG from the LinkSwitch-PL family of devices. The RD-271 provides a single constant current output of 130 mA over an LED string voltage of 35 V.
The board was optimized to operate over the low AC input voltage range (85 VAC to 135 VAC, 47 Hz to 63 Hz). LinkSwitch-PL based designs provide a high power factor (>0.9) meeting current international requirements.
The form factor of the board was chosen to meet the requirements for standard pear shaped (E17) LED replacement lamps. The output is non-isolated and requires the mechanical design of the enclosure to isolate the output of the supply and the LED load from the user.
The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.
| Manufacturer | Power Integrations |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - AC / Offline |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
|
| Outputs and Type |
1 Non-Isolated
|
| Current Out |
130 mA
|
| Voltage Out (Max) |
35 V
|
| Efficiency @ Conditions |
>85%, 98 ~ 135 VAC, 39 V LED
>85%, 90 ~ 135 VAC, 36 V LED |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Frequency Jitter for EMI Open Circuit Protection Over Current Protection Over Voltage Protection Thermal Protection |
| Switching Frequency |
29.6 ~ 122 kHz
|
| Component Count + Extras |
21 + 9
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting |
| Voltage In |
85 ~ 135 VAC
|
| Power Factor |
>0.9
|
| Standard(s) |
EN55015 B conducted EMI
IEC 1000-4-5 |
| Main I.C. Base Part |
LNK458
|
| Date Created By Author | 2011-06 |
| Date Added To Library | 2014-09 |
Poland
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