VIPER38:VIPerPlus family: Peak power fixed frequency 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 light load.

The device features an adjustable extra power timer (EPT) that enables the IC to sustain overload conditions for a few seconds.

The integrated HV startup, sense FET and oscillator with jitter allow the advantage of using minimal components in the application.

The device features high-level protections like dual-level OCP, output overvoltage, short-circuit, and thermal shutdown with hysteresis. After the removal of a fault condition, the IC is automatically restarted.

Key Features

  • 800 V avalanche-rugged power MOSFETallowing 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
  • 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
Product Specifications
DescriptionVersionSize
DS10100: VIPerPlus family: peak power high-voltage converter2.0929 KB
Application Notes
DescriptionVersionSize
AN4564: Is a positive power supply mandatory for my application, or could a negative output work also?1.0384 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
VIPerPlus - Your SMPS design deserves a Plus11.20161 MB
Solution Evaluation Tools
Part NumberManufacturerDescription
STEVAL-ISA153V112 V, 15 W (20 W peak) isolated flyback converter based on the VIPER38LE
STEVAL-ISA182V1ST8.4 W / 30 W peak power offline flyback converter using VIPER38HD
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityRDS(on) (Ω) (max)Transistor Breakdown Voltage (V) (min)Drain Current (A) (nom)ECCN (EU)ECCN (US)Country of Origin
VIPER38LDSO-16Tube0.51510004.58001.15NECEAR99CHINA
VIPER38LESDIP 10Tube0.59510004.58001.15NECEAR99MALAYSIA
VIPER38HDSO-16Tube0.51510004.58001.15NECEAR99CHINA
VIPER38LDTRSO-16Tape And Reel0.51510004.58001.15NECEAR99CHINA
VIPER38HDTRSO-16Tape And Reel0.51510004.58001.15NECEAR99CHINA
VIPER38HESDIP 10Tube0.59510004.58001.15NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
VIPER38LDSO-16IndustrialEcopack2
VIPER38LESDIP 10IndustrialEcopack2
VIPER38HDSO-16IndustrialEcopack2
VIPER38LDTRSO-16IndustrialEcopack2
VIPER38HDTRSO-16IndustrialEcopack2
VIPER38HESDIP 10IndustrialEcopack2md_(e-wspc-sdip-wspc-10l_a5(emv1fab5-wspc-.pdf
md_(e-wspc-sdip-wspc-10l_a5(emv1fab5.xml
VIPerPlus family: peak power high-voltage converter VIPER38
Is a positive power supply mandatory for my application, or could a negative output work also? VIPER16
Very low drop voltage regulators with inhibit KFXX
Improving voltage regulation of a buck converter using the VIPerPLUS VIPER16
md_(e-wspc-sdip-wspc-10l_a5(emv1fab5-wspc-.pdf VIPER38
md_(e-wspc-sdip-wspc-10l_a5(emv1fab5.xml VIPER38