VIPER318 - STMicroelectronics

VIPER318 Energy saving offline high voltage converter

The VIPER31 device is a high-voltage converter that smartly integrates an 800 V avalanche rugged power MOSFET with PWM current-mode control.. The 800 V breakdown allows extended input voltage range to be applied, as well as to reduce the size of the DRAIN snubber circuit. The IC can meet the most stringent energy-saving standards as it has very low consumpti.

Features

• 800 V avalanche-rugged power MOSFET to cover ultra-wide VAC input range
• Embedded HV startup and sense FET
• Current mode PWM controller
• Drain current limit protection (OCP):
  – 850 mA (VIPER318) ~ AC DIN RIN
  – 990 mA (VIPER319) VCC OVP DRAIN VIPER31
• Wide supply voltage range: 4.5 V to 30 V FB CONTROL
  – < 20 mW @ 230 VAC in no-load; COMP UVP GND CIN DAUX
  – < 430 mW @ 230 VAC, 25 0mW output load R1 C1
• Jittered switching frequency reduces the EMI filter cost: C3 R2 C2 D2 LOUT VOUT
  – 30 kHz ± 7% (X type) GND D1 COUT GND
  – 60 kHz ± 7% (L type)
  – 132 kHz ±7.