Features
 1050 V avalanche-rugged power MOSFET
 allowing ultra-wide VAC input range to be
covered
 Embedded HV startup and sense-FET
 Current mode PWM controller
 Drain current limit protection:
 -500 mA (VIPER265K)
 -700 mA (VIPER267K)
 Jittered switching frequency reduces the EMI
filter cost: 60 kHz ± 4kHz
 Standby power < 30 mW at 230 VAC
 Embedded E/A with 3.3 V reference
 Safe auto-restart after a fault condition
 Hysteretic thermal shutdown
 Built-in soft-start for improved system reliability

Applications
 SMPS for energy metering
 Auxiliary power supplies for 3-phase input
industrial systems
 LED lighting
 Air conditioning

Description
The device is a high voltage converter smartly
integrating a 1050 V avalanche-rugged power
section, with a PWM current mode control. The
1050 V-BV power MOSFET allows to extend input
voltage range, and reduce the size of the DRAIN
snubber circuit. This IC meets the most stringent
energy-saving standards as it has very low
consumption and operates in burst mode under
light load.
The integrated HV startup, sense-FET, error
amplifier and oscillator with jitter allow a complete
application to be designed with the minimum
number of components.
The VIPer26K supports the most common SMPS
topologies such as: isolated flyback with
optocoupler, primary-side regulation, non-isolated
flyback with resistive feedback, buck, and buck
boost.