Design is for applications where an off-line power supply without isolation between input and output can be tolerated and rather low output current is required. In this case the converter should be simple and low cost. These requirements can be satisfied by a step-down converter based on monolithic device VIPer12AS that incorporates the PWM controller together with the Vertical power MOSFET switch in a SO8 package.
The presented power supply has two variants. The first is a buck (step-down) converter with a positive output voltage referenced to the common ground. The second one with negative output voltage is a buck-boost converter. The presented reference board incorporates both variants by different assembly options.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Multi Output |
| Eval Board Part Number | 497-4932-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
2 Non-Isolated
|
| Voltage Out: Highest Current First |
15V, 5V
|
| Current Out |
100mA, 60mA
|
| Output Power |
1.6 W
|
| Efficiency @ Conditions |
>78%, 120 VAC, 15V @ 100 mA
>75%, 120V in, 15V @ 50 mA >74%, 240 VAC, 15V @ 100 mA >71%, 240 VAC, 15V @ 50 mA |
| No-load Input Power @ Voltage |
- Not Given
|
| Features |
Light Load Mode
Over Current Protection Over Voltage Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out Zero Load Regulation |
| Switching Frequency |
60 kHz
|
| Internal Switch |
Yes
|
| Component Count + Extras |
20 + 4
|
| Voltage In |
85 ~ 265 VAC
|
| Application / Target Market |
Computers
DVD/Blu-ray Players Set-Top Boxes White Goods |
| Design Author |
STMicroelectronics
|
| Main I.C. Base Part |
VIPer12AS
|
| Date Created By Author | 2007-07 |
| Date Added To Library | 2011-05 |
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