STMicroelectronics VIPER38
The device is a high-voltage converter that smartly integrates an 800 V rugged power MOSFET with PWM current-mode control. The power MOSFET allows a very high input Vac to be applied, just limited from its breakdown voltage.FEATURES
● 800 V avalanche-rugged power MOSFET allowing ultra wide range input Vac to be achieved● Embedded HV start-up and sense FET
● PWM current-mode controller
● OCP with selectable threshold (IDlim) and 2nd OCP with higher value (IDMAX) to protect the IC from transformer saturation or short-circuit of the secondary diode
● 30 mW no-load consumption at 230 Vac
● Two operating frequencies: – 60 kHz (L type) or 115 kHz (H type)
● Jittered frequency reduces the EMI
● Extra power timer (EPT) blanks the overload current for few seconds Datasheet - production data
● Output overvoltage protection with tight tolerance and digital noise filter
● Soft-start reduces the stress during startup and increases IC lifetime
● Automatic restart after a fault condition
● Thermal shutdown increases system reliability and IC lifetime
APPLICATIONS
● Auxiliary power supply for consumer and home equipment● Power supply for energy meters and data concentrators
● Adapters
DESCRIPTION
This IC is capable of meeting more stringent energy-saving standards as it has very low consumption and operates in burst mode under light load.