The document describes a non-isolated, high efficiency, high power factor (PF) LED driver designed to drive a nominal LED string voltage of 85 V at 235 mA from an input voltage range of 85 VAC to 135 VAC (47 Hz – 63 Hz). The LED driver utilizes the LNK460KG from the LinkSwitch-PL family of ICs.
The topology used is a single-stage non-isolated buck boost that meets the stringent space and efficiency requirements for this design. LinkSwitch-PL based designs provide high power factor (>0.9) meeting international requirements.
This document contains the LED driver specification, schematic, PCB details, bill of materials, 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
|
| Outputs and Type |
1 Non-Isolated
|
| Current Out |
235 mA
|
| Voltage Out (Max) |
90 V
|
| Efficiency @ Conditions |
>87%, 98 ~ 135 VAC, @ 85 V
>87%, 102 ~ 135 VAC, @ 90 V >86%, 93 ~ 135 VAC, @ 80 V |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Frequency Jitter for EMI Open Circuit Protection Over Current Protection Over Voltage Protection Short Circuit Protection Thermal Protection |
| Switching Frequency |
29.6 ~ 122 kHz
|
| Component Count + Extras |
31 + 0
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting |
| Voltage In |
85 ~ 135 VAC
|
| Power Factor |
0.98 @ 115 VAC
|
| Standard(s) |
EN55015 B conducted EMI
IEC 61000-3-2 Class C |
| Main I.C. Base Part |
LNK460
|
| Date Created By Author | 2012-09 |
| Date Added To Library | 2014-09 |
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