STEVAL-ISA135V1 STMicroelectronics

STEVAL-ISA135V1 4 W, 12 V output, isolated flyback converter using VIPer Plus - VIPER06HS Data brief Description 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. Features AC main input voltage: V 85 V - 265 V IN AC AC Main frequency: f 50 Hz - 60 Hz L Output voltage: V 12 V OUT Max output current: I 333 mA OUT Precision of output regulation: V 5 % OUT LF High frequency output voltage ripple: 50 mV V OUT HF Min active mode efficiency: 71 % AV Max ambient operating temperature: T 60 C AMB Thermal shutdown with hysteresis Delayed overload protection Open loop failure protection (if auxiliary winding is used) RoHS compliant May 2014 DocID025243 Rev 2 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISA135V1 1 Schematic diagram Figure 1: STEVAL-ISA135V1 circuit schematic 2/4 DocID025243 Rev 2