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reference designVIPER26

STMicroelectronics VIPER26

Fixed frequency VIPerTM plus family

Overview

TopologyOther Topology
Switching frequency60-115 kHz
IC revision2

Description

The device is an off-line converter with an 800 V avalanche ruggedness power section, a PWM controller, user defined overcurrent limit, protection against feedback network disconnection, hysteretic thermal protection, soft start up and safe auto restart after any fault condition.

Advance frequency jittering reduces EMI filter cost. Burst mode operation and the devices very low consumption both help to meet the standard set by energy saving regulations.

Features

  • 800 V avalanche rugged power section
  • PWM operation with frequency jittering for low EMI
  • Operating frequency:
  • 60 kHz for L type
  • 115 kHz for H type
  • Standby power < 50 mW at 265 VAC
  • Limiting current with adjustable set point On-board soft-start
  • Safe auto-restart after a fault condition
  • Hysteretic thermal shutdown

Typical applications

  • SMPS for set-top boxes, DVD players and
  • Power metering
  • Auxiliary power supply for appliances
  • LED drivers

More information

Parts approved by STMicroelectronics

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
ISAT(A)
fres(MHz)
Version
IRP,40K(A)
VOP(V)
Size
ISAT,10%(A)
ISAT,30%(A)
IR,40K(A)
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
Vaux(V)
fswitch(kHz)
NPRI : NSEC : NAUX
IR(A)
L(µH)
RDC max.(mΩ)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
SamplesAvailability & Sample
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7447713102
SPECWE-PD SMT Power Inductor, 0.45 A, 2.3 MHz
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Saturation Current0.45 A
Self Resonant Frequency2.3 MHz
VersionPerformance 
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Operating Voltage120 V
Size1030 
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–
–
–
–
–
–
–
–
–
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Rated Current0.3 A
Inductance1000 µH
DC Resistance4600 mΩ
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–
–
Length10 mm
Width10 mm
Height3 mm
MountSMT 
–Check availability
7447713471
SPECWE-PD SMT Power Inductor, 0.65 A, 3.4 MHz
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Saturation Current0.65 A
Self Resonant Frequency3.4 MHz
VersionPerformance 
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Operating Voltage120 V
Size1030 
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–
–
–
–
–
–
–
–
–
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Rated Current0.42 A
Inductance470 µH
DC Resistance2200 mΩ
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–
–
Length10 mm
Width10 mm
Height3 mm
MountSMT 
–Check availability
74408943820
SPECWE-SPC SMT Power Inductor, 0.8 A, 8 MHz
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-SPC SMT Power Inductor
Saturation Current0.8 A
Self Resonant Frequency8 MHz
VersionSMT 
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Size4838 
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–
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–
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Rated Current0.58 A
Inductance82 µH
DC Resistance750 mΩ
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–
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Length4.8 mm
Width4.8 mm
Height3.8 mm
MountSMT 
–Check availability
750314352
SPECWE-OLSTM Offline Flyback Transformers, 0.82 A, –
Simu­lation
Availability
–
Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-OLSTM Offline Flyback Transformers
Saturation Current0.82 A
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–
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SizeEE16/7/5 
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–
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Input Voltage 85 - 265 V (AC)
Output Voltage 115 V
Output Current 1700 mA
Output Voltage 26 V
Output Current 2100 mA
Auxiliary Voltage12 V
Switching Frequency 115
Turns Ratio11.9:1.33:1:2.11 
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Inductance900 µH
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–
Insulation Test Voltage1500 V (AC)
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Length18.5 mm
Width16.5 mm
Height18.8 mm
MountTHT 
–Check availability
74455047
SPECWE-PD4 SMT Power Inductor, 1.5 A, 37 MHz
Simu­lation–
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD4 SMT Power Inductor
Saturation Current1.5 A
Self Resonant Frequency37 MHz
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Operating Voltage120 V
SizeS 
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–
–
–
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Rated Current1.5 A
Inductance4.7 µH
DC Resistance90 mΩ
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–
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Length6.6 mm
Width4.45 mm
Height2.92 mm
MountSMT 
–Check availability
744821110
SPECWE-CMB Common Mode Power Line Choke, –, –
Simu­lation
Availability
–
Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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–
VersionTHT 
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SizeXS 
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–
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Rated Current0.7 A
Inductance10000 µH
DC Resistance350 mΩ
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length15 mm
Width7.5 mm
Height18 mm
MountTHT 
–Check availability
7447010
SPECWE-FI Leaded Toroidal Line Choke, –, –
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-FI Leaded Toroidal Line Choke
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–
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Rated Current1.6 A
Inductance470 µH
DC Resistance225 mΩ
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–
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Length18.5 mm
Width11.6 mm
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MountTHT 
–Check availability
7447709471
SPECWE-PD SMT Power Inductor, –, 1.8 MHz

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
–
Self Resonant Frequency1.8 MHz
VersionStandard 
Performance Rated Current1.45 A
Operating Voltage120 V
Size1210 
Saturation Current @ 10%1.5 A
Saturation Current @ 30%1.85 A
Rated Current1.4 A
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–
–
–
–
–
–
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Rated Current1.4 A
Inductance470 µH
DC Resistance560 mΩ
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–
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Length12 mm
Width12 mm
Height10 mm
MountSMT 
–Check availability