Energy saving VIPerPlus: HV switching regulator for flyback
Converter
Description
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.
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
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