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  • 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 consumption and operates in pulse frequency modulation at light load. Overvoltage and undervoltage protections with separate and settable intervention thresholds are available at OVP and UVP pins respectively. UVP can also be used as a disabling input for the entire SMPS, with ultra-low residual input power consumption. Integrated HV startup, sense FET, error amplifier and oscillator with frequency jitter allow a complete application to be designed with a minimum component count. Flyback, buck and buck boost topologies are supported.

    Key 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):
      • 710 mA (VIPER317)
      • 850 mA (VIPER318)
      • 990 mA (VIPER319)
    • Wide supply voltage range: 4.5 V to 30 V
      • < 20 mW @ 230 VAC in no-load;
      • < 430 mW @ 230 VAC, 25 0mW output load
    • Jittered switching frequency reduces the EMI filter cost:
      • 30 kHz ± 7% (type X)
      • 60 kHz ± 7% (type L)
      • 132 kHz ±7% (type H)
    • Embedded E/A with 1.2 V reference
    • Built-in soft-start for improved system reliability
    • Protections with automatic restart:
      • overload/short-circuit (OLP)
      • thermal shutdown
      • overvoltage
    • Protections without automatic restart:
      • pulse-skip protection to avoid flux runaway
      • undervoltage/disable
      • max. duty cycle

Recommended for you

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-VP318L1F

      Active

      15 V / 1.2 A SSR Flyback converter based on VIPer318L

      PSU and Converter Solution Eval Boards ST

      STEVAL-VP319X1B

      Active

      5 V / 0.6 A Buck converter based on VIPER319X

      PSU and Converter Solution Eval Boards ST
      STEVAL-VP318L1F

      Description:

      15 V / 1.2 A SSR Flyback converter based on VIPer318L
      STEVAL-VP319X1B

      Description:

      5 V / 0.6 A Buck converter based on VIPER319X

EDA Symbols, Footprints and 3D Models

STMicroelectronics - VIPER31

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
VIPER317HDTR
Active
SO-16 Industrial Ecopack3
VIPER317LDTR
Active
SO-16 Industrial Ecopack3
VIPER318HDTR
Active
SO-16 Industrial Ecopack3
VIPER318LDTR
Active
SO-16 Industrial Ecopack3
VIPER318XDTR
Active
SO-16 Industrial Ecopack3
VIPER319HDTR
Active
SO-16 Industrial Ecopack3
VIPER319LDTR
Active
SO-16 Industrial Ecopack3
VIPER319XDTR
Active
SO-16 Industrial Ecopack3

VIPER317HDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER317LDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER318HDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER318LDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER318XDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER319HDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER319LDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

VIPER319XDTR

Package:

SO-16

Material Declaration**:

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) 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.

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
More info
min
max
VIPER319XDTR Available at 1 distributors

Distributor availability ofVIPER319XDTR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 25 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

COMPEL

Stock

25

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-30

Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER319HDTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER318XDTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER318HDTR Available at 4 distributors

Distributor availability ofVIPER318HDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 990 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 989 1 Order Now
RUTRONIK EUROPE 10 2500 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

990

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

989

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER318LDTR Available at 6 distributors

Distributor availability ofVIPER318LDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 975 1 Order Now
COMPEL EUROPE 15 1 Order Now
RS COMPONENTS EUROPE 500 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 997 1 Order Now
RUTRONIK EUROPE 10 2500 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

975

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

15

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

997

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER317LDTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER317HDTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER319LDTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SO-16 -40 125 0.464 / 1k
MORE INFO

RDS(on) (Ω) (max):

3.5

Transistor Breakdown Voltage (V) (min):

800

Drain Current (A) (nom):

0.85

Country of Origin:

THAILAND

VIPER319XDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

Distributor availability ofVIPER319XDTR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 25 1 Order Now

Distributor reported inventory date: 2020-11-30

Distributor Name

COMPEL

Stock

25

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-30

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER319HDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER318XDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER318HDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

Distributor availability ofVIPER318HDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 990 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 989 1 Order Now
RUTRONIK EUROPE 10 2500 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

990

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

989

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER318LDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

Distributor availability ofVIPER318LDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 975 1 Order Now
COMPEL EUROPE 15 1 Order Now
RS COMPONENTS EUROPE 500 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 997 1 Order Now
RUTRONIK EUROPE 10 2500 Order Now

Distributor reported inventory date: 2020-12-02

Distributor Name

DIGIKEY

Stock

975

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

15

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

500

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

997

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER317LDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER317HDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

VIPER319LDTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.464 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.464 / 1k

RDS(on) (Ω) (max)

3.5

Transistor Breakdown Voltage (V) (min)

800

Drain Current (A) (nom)

0.85

Country of Origin

THAILAND

(*) 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