VIPER38 - STMicroelectronics

VIPER38 peak power high-voltage converter

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. This IC is capable of meeting more stringent energy-saving standards as it has very low consumption and operates in burst mode under li.

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 t.