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VIPER17：VIPerPlus family: Fixed frequency 6W high performance off line high voltage converter

The device is an off-line converter with an 800 V rugged power section, a PWM control, two levels of overcurrent protection, overvoltage and overload protections, hysteresis thermal protection, soft-start and safe auto-restart after any fault condition removal. The burst mode operation and the device’s very low consumption meet the standby energy saving regulations.

Advance frequency jittering reduces EMI filter cost. Brown-out function protects the switch mode power supply when the rectified input voltage level is below the normal minimum level specified for the system. The high voltage start-up circuit is embedded in the device.

Key Features

• 800 V avalanche rugged power section
• PWM operation with frequency jittering for low EMI
• Operating frequency:
  • 60 kHz for L type
  • 115 kHz for H type
• Standby power < 30 mW at 265 Vac
• Limiting current with adjustable set point
• Adjustable and accurate overvoltage protection
• On-board soft-start
• Safe auto-restart after a fault condition
• Hysteresis thermal shutdown

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