STMicroelectronics Evaluation Board for VIPER06HS for Power Supply

The STEVAL-ISA135V1 is a 12 V - 4 W power supply in isolated flyback topology based on the VIPer06HS, a new offline high voltage converter having, as main features: 800 V avalanche rugged power section, PWM operation at 115 kHz with frequency jittering for lower EMI, cycle-by-cycle current limit with adjustable set point, on-board soft-start and safe auto-restart after a fault condition.

AC main input voltage: VIN 85 VAC - 265 VAC
Main frequency: fL 50 Hz - 60 Hz
Output voltage: VOUT 12 V
Max output current: IOUT 333 mA
Precision of output regulation: ΔVOUT_LF ±5 %
High frequency output voltage ripple: ΔVOUT_HF 50 mV
Min active mode efficiency: ηAV 71 %
Max ambient operating temperature: TAMB 60 ºC
Thermal shutdown with hysteresis
Delayed overload protection
Open loop failure protection (if auxiliary winding is used)