The document describes a non-isolated, high power factor (PF), TRIAC dimmable LED driver. The driver is designed to drive a nominal LED string voltage of 30 V at 480 mA from an input voltage range of 90 VAC to 132 VAC (60 Hz typical). The LED driver utilizes the LNK407EG from the LinkSwitch-PH family of ICs.
The topology used is a single-stage non-isolated buck that meets the high power factor, good current regulation, and dimming requirements for this design. LinkSwitch-PH based designs provide a 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 |
480 mA
|
| Voltage Out (Max) |
30 V
|
| Efficiency @ Conditions |
>89%, 97 ~ 132 VAC, @ 29 V
>89%, 100 ~ 132 VACin @ 31 V >89%, 100 ~ 132 VAC, @ 30 V |
| Features |
Current Limit (Adj. or Fixed)
Frequency Jitter for EMI Open Circuit Protection PFC PFM or PWM Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
66 kHz
|
| Component Count + Extras |
37 + 5
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting |
| Voltage In |
90 ~ 132 VAC
|
| Power Factor |
0.98 @ 115 VAC
|
| Standard(s) |
EN55015 B conducted EMI
|
| Main I.C. Base Part |
LNK407
|
| Date Created By Author | 2012-09 |
| Date Added To Library | 2025-11 |
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