This document describes a cost effective power supply utilizing the LYTSwitch™-0 family (LYT0006D) in a highly compact buck topology.
This power supply operates over an input voltage range of 190 VAC to 265 VAC. The DC bus voltage is high enough to support 85 V output when using a buck topology. In a buck converter the output voltage must always be lower than the input voltage. The output voltage is also limited by the maximum duty cycle of the LYTSwitch-0, which also requires the input voltage to be larger than the output voltage.
The reference design is not limited for LED tube of ballast lamp application; due to its simplicity the design layout can be easily modified for retrofit lamp applications.
| Manufacturer | Power Integrations |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - AC / Offline |
| Eval Board |
Board not Stocked
|
| AC Voltage |
230 V
|
| Outputs and Type |
1 Non-Isolated
|
| Current Out |
135 mA
|
| Voltage Out (Max) |
88 V
|
| Efficiency @ Conditions |
>90%, 190 ~ 254 VAC, 88 V
>90%, 190 ~ 240 VAC, 85 V >90%, 190 ~ 223 VAC, 82 V |
| Features |
Current Limit (Adj. or Fixed)
Frequency Jitter for EMI Open Circuit Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
66 kHz
|
| Component Count + Extras |
24 + 5
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Lighting: LED Commercial Lighting
Lighting: LED Home Lighting |
| Voltage In |
190 ~ 265 VAC
|
| Power Factor | |
| Standard(s) | |
| Main I.C. Base Part |
LYT0006
|
| Date Created By Author | 2013-10 |
| Date Added To Library | 2014-07 |
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