Summary
This reference design represents a cost effective solution for low power high voltage power supplies. It has been developed to cover applications requiring an ultra-wide input voltage range (between 90 and 450 VAC), typical of 3-phase applications. This requires the use of very high voltage components, which increases cost, size, weight and the overall complexity of the power supply.
The circuit includes a switching transistor connected between the input rectifier and the DC bulk capacitor (STMicroelectronics patent). The series switch limits the DC input voltage of the power converter by means of a driving circuit; thus the SMPS primary transistor can be selected as a standard part as well as a smart power primary IC.
Specifications
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Multi Output |
| Eval Board Part Number | 497-5678-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
2 Isolated
|
| Voltage Out: Highest Current First |
3.3V, 5V
|
| Current Out |
100mA, 10mA
|
| Output Power |
380 mW
|
| Efficiency @ Conditions |
>54%, 110V in, Full Load
>45%, 230V in, Full Load >31%, 380V in, Full Load >25%, 450V in, Full Load |
| No-load Input Power @ Voltage |
310 mW @ 110 V
|
| 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 |
41 + 2
|
| Voltage In |
90 ~ 450 VAC
|
| Application / Target Market |
Power: Auxiliary Power Supply
|
| Design Author |
STMicroelectronics
|
| Main I.C. Base Part |
VIPer12AS
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
Support Documents & Media
Media
