This is a data brief about a demonstration board based on the VIPER16 chip from STMicroelectronics. The demonstration board is an example of a non-isolated auxiliary power supply designed for a range of input voltages from 85 VAC to 500 VAC. The product features include a wide input voltage range, adjustable output voltages, and stable output current.
The STEVAL-ISA010V1 is a demonstration board designed as an example of a simple non-isolated auxiliary power supply. It is based on the VIPER16 device and is intended for applications requiring a wide input voltage range, such as home appliances and metering, where nominal levels reach 400 VAC or higher.
The board provides two output voltages: 12 V and 5 V, with a total output current of 150 mA. It features short-circuit protection and utilizes burst mode operation at light loads to meet standby energy-saving regulations. The VIPER16 chip used includes an 800 V rugged power switch and various protection features, eliminating the need for an auxiliary supply.
| Input voltage | 85 - 500 VAC (f: 45 - 66 Hz) |
|---|---|
| Output voltage 1 | 12 V ± 10% |
| Output current | 150 mA total |
| Standby consumption | 96 mW at 230 VAC |
| PCB dimensions | 27 x 45 mm |
| Isolation type | Non isolated |
The input voltage range is 85 to 500 VAC at a frequency of 45 to 66 Hz.
No, the VIPER16 device includes an internal self-supply circuit, so an auxiliary supply is not mandatory.
The board provides two outputs: 12 V ± 10% and 5 V ± 4%.