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reference designVIPER26

STMicroelectronics VIPER26

Fixed frequency VIPerTM plus family

Overview

TopologyFlyback Converter
Switching frequency60-115 kHz
Output 115 V / 0.2 A
Output 25 V / 0.1 A
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

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
ISAT(mA)
fres(MHz)
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
Vaux(V)
fswitch(kHz)
NPRI : NSEC : NAUX
Size
IR(A)
L(µH)
RDC max.(Ω)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
SamplesAvailability & Sample
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750314352
SPECWE-OLSTM Offline Flyback Transformers, 820 mA, –
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-OLSTM Offline Flyback Transformers
Saturation Current820 mA
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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 
SizeEE16/7/5 
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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, 1500 mA, 37 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
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD4 SMT Power Inductor
Saturation Current1500 mA
Self Resonant Frequency37 MHz
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SizeS 
Rated Current1.5 A
Inductance4.7 µH
DC Resistance0.09 Ω
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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
–
Downloads11 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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SizeXS 
Rated Current0.7 A
Inductance10000 µH
DC Resistance0.35 Ω
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length15 mm
Width7.5 mm
Height18 mm
MountTHT 
–Check availability