Description
The STEVAL-ISA113V1 demonstration board is a
12 V-0.35 A power supply set in non-isolated
flyback topology using the new VIPER06HS
offline high-voltage converter by
STMicroelectronics.
The features of the device include an 800 V
avalanche rugged power section, PWM operation
at 115 kHz with frequency jittering for lower EMI,
current limiting with adjustable set point, onboard
soft-start, a safe auto-restart after a fault condition
and a low standby power.
The protection features available include a
thermal shutdown with hysteresis, delayed
overload protection, and open loop failure
protection.

Features
■ Universal input mains range:
– input voltage 90 - 265 VAC
– frequency 45 - 65 Hz
■ Single-output voltage: 12 V at 0.35 A
continuous operation
■ Standby mains consumption: < 30 mW at
230 VAC
■ Average efficiency: > 74%
■ Fully protected against faults (overload,
feedback disconnection and overheating)
■ EMI: according to EN55022-Class-B
■ RoHS compliant