This engineering report describes a 5 W constant voltage/constant current (CV/CC) universal-input power supply for cell phone or similar charger applications. This reference design is based on the LinkSwitch-II family product LNK616PG.
The LNK616PG can be configured to either be self-biased from the high-voltage DRAIN pin, or to receive an optional external bias supply. When configured to be self-biased, the very low IC current consumption ensures a worst-case no-load power consumption of less than 175 mW at 265 VAC, well within the 300 mW European Union CoC limit. When fed from an optional bias supply (as in this design), the no-load power consumption reduces to <50 mW.
| Manufacturer | Power Integrations |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Single Output |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
1 Isolated
|
| Voltage Out |
5 V
|
| Current Out |
1 A
|
| Output Power |
5 W
|
| Features |
Current Limit (Adj. or Fixed)
Open Circuit Protection Short Circuit Protection Thermal Protection |
| Efficiency @ Conditions |
>73%, 230 V in @ 1.2 ~ 5 W
>72%, 115V in @ 0.5 ~ 5 W |
| No-load Input Power @ Voltage |
41 mW @ 115 V
46 mW @ 230 V |
| Switching Frequency |
67 kHz
|
| Internal Switch |
Yes
|
| Component Count + Extras |
29 + 3
|
| Voltage In |
85 ~ 265 VAC
|
| Design Author |
Power Integrations
|
| Application / Target Market |
Audio: MP3 Players
Battery Chargers Cell Phones Digital Cameras Portable Devices Power: AC Adapters Power: Auxiliary Power Supply |
| Main I.C. Base Part |
LNK616
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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