ST Life.augmented

VIPER28

VIPerPlus family: fixed frequency high performance off line high voltage converter
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The device is a high-voltage converter that smartly integrates an 800 V rugged power MOSFET with PWM current-mode control.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.

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Errata Sheet
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Datasheet

Key Features

  • 800 V avalanche-rugged power MOSFET allowing achieving ultra wide-range input Vac
  • Embedded HV startup and sense FET
  • PWM current-mode controller
  • OCP with selectable threshold (IDlim) and 2ndOCP 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

Circuit Diagram

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS5927: Peak power high-voltage converter - VIPer Plus
6.0 876 KB

Application Notes

Description Version Size
pdf
AN2950: EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management
1.0 1,804 KB

Presentations & Training Material

Presentations

Description Version Size
pdf
ST products and solutions for solar energy
1.0.0 2,135 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-ISA125V1 5 V/10 W, 60 kHz isolated flyback with extra power management based on the VIPer28L
EVLVIPER28L-10W EVLVIPER28L-10W: 5 V/10 W, 60 kHz isolated flyback with extra power management
STEVAL-ISA126V1 5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN

Publications and Collaterals

Brochure

Description Version Size
pdf
VIPerPlus
1,167 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeRDS(on) (max) Transistor Breakdown Voltage (min) Drain Current (nom) Order From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
VIPER28HDActiveSO-16Tube7800.8-.554No availability reported, please contact our Sales officeEcopack2PDF
XML
VIPER28HDTRActiveSO-16Tape And Reel7800.8-.554Distributor reported inventory date: 2015-05-26
Distributor NameRegionStockMin. order
RUTRONIKOrder NowEUROPE125002500
FUTUREOrder NowWORLDWIDE25002500
Ecopack2PDF
XML
VIPER28HNActivePDIP 7Tube7800.8Free Samples.554Distributor reported inventory date: 2015-05-26
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA20002000
P&SOrder NowASIA/PACIFIC501
ARROWOrder NowEUROPE100000
Farnell Element14Order NowEUROPE2531
DIGIKEYOrder NowWORLDWIDE18821
Ecopack2 (**)PDF
XML
VIPER28LDActiveSO-16Tube7800.8-.554No availability reported, please contact our Sales officeEcopack2PDF
XML
VIPER28LDTRActiveSO-16Tape And Reel7800.8-.554Distributor reported inventory date: 2015-05-23
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA25002500
Ecopack2PDF
XML
VIPER28LNActivePDIP 7Tube7800.8Free Samples.554Distributor reported inventory date: 2015-05-26
Distributor NameRegionStockMin. order
P&SOrder NowASIA/PACIFIC5001
ARROWOrder NowEUROPE8340
RUTRONIKOrder NowEUROPE100050
DIGIKEYOrder NowWORLDWIDE5241
Ecopack2 (**)PDF
XML

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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