The STEVAL-ISA010V1 is a demonstration board based on VIPER16. It is designed as an example of a simple non isolated auxiliary power supply for a range of input voltages from 85Vac to 500Vac. The VIPER16 device includes an 800V rugged power switch, a PWM controller, programmable overcurrent, overvoltage, overload, a hysteretic thermal protection, soft start and safe auto restart after any fault condition removal. Burst mode operation at light load combined with the very low consumption of the device helps to meet standby energy saving regulations. The significant benefit of this new chip derives from the jitter of the switching frequency and the possibility to supply the chip directly from the DC HV bus, so auxiliary supply is not mandatory. The VIPER16 is suitable for flyback or buck topologies and its internal self supply circuit it does not require an auxiliary supply.
Output voltages V1 is 12V, V2 is 5V
Output current 150mA total output current for full input voltage range
