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STMicroelectronics Viper26H | Demoboard STEVAL-ISA111V1
STEVAL-ISA111V1: 12 V / 12 W, 115 kHz non-isolated flyback
Overview
| Topology | Flyback Converter |
| Input voltage | 90-265 V |
| Output 1 | 12 V / 1 A |
| IC revision | 1 |
Description
The STEVAL-ISA111V1 demonstration board is a 12 V, 1 A power supply set in non-isolated flyback topology using the VIPER26HN, the new offline high voltage converter by STMicroelectronics.The features include an 800 V avalanche rugged power section, PWM operation at 115 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, onboard soft-start, a safe auto-restart after a fault condition and a low standby power. The protections include thermal shutdown with hysteresis, delayed overload protection, and open loop failure protection.
Features
◾Universal input mains range: ◾input voltage 90 - 264 VAC◾frequency 45 - 65 Hz
◾Single-output voltage: 12 V at 1 A continuous operation◾Standby mains consumption: < 30 mW at 230 VAC◾Average efficiency: > 80%◾Fully protected against faults (overload, feedback disconnection and overheating)◾EMI: according to EN55022-Class-B◾RoHS compliant
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT(A) | fres(MHz) | Version | IRP,40K(A) | Size | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | L(µH) | IR(A) | RDC max.(mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 0.45 A, 2.3 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Saturation Current0.45 A | Self Resonant Frequency2.3 MHz | VersionPerformance | – | Size1030 | – | – | – | Inductance1000 µH | Rated Current0.3 A | DC Resistance4600 mΩ | ||||
 | WE-SPC SMT Power Inductor, 0.8 A, 8 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SPC SMT Power Inductor | Saturation Current0.8 A | Self Resonant Frequency8 MHz | VersionSMT | – | Size4838 | – | – | – | Inductance82 µH | Rated Current0.58 A | DC Resistance750 mΩ | ||||
 | WE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | Inductance470 µH | Rated Current1.6 A | DC Resistance225 mΩ | |||
 | WE-PD SMT Power Inductor, –, 1.8 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | – | Self Resonant Frequency1.8 MHz | VersionStandard | Performance Rated Current1.45 A | Size1210 | Saturation Current @ 10%1.5 A | Saturation Current @ 30%1.85 A | Rated Current1.4 A | Inductance470 µH | Rated Current1.4 A | DC Resistance560 mΩ |