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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 | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | fres (MHz) | Version | IRP,40K (A) | L (mH) | IR (A) | RDC max. (Ω) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750810131 | SPEC | 4 files | MID-OLSTM Offline Flyback Transformers for STMicroelectronics | 85 - 265 V (AC) | 12 | 1 | 12 | 115 | 5.8:1:1 | 320 | 2500 | 20.32 | 24.38 | 16 | THT | EE16/8/5 | – | – | – | 1.8 | – | – | ||
 | 7447010 | SPEC | – | 6 files | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | 18.5 | 11.6 | – | – | – | – | – | – | 0.47 | 1.6 | – | |
 | 74408943820 | SPEC | 8 files | WE-SPC SMT Power Inductor | – | – | – | – | – | – | 800 | – | 4.8 | 4.8 | 3.8 | – | 4838 | – | SMT | – | 0.082 | 0.58 | 0.75 | ||
 | 7447713102 | SPEC | 8 files | WE-PD SMT Power Inductor | – | – | – | – | – | – | 450 | – | 10 | 10 | 3 | SMT | 1030 | 2.3 | Performance | – | 1 | 0.3 | 4.6 | ||
 | 7447709471 | SPEC | 8 files | WE-PD SMT Power Inductor | – | – | – | – | – | – | 1500 | – | 12 | 12 | 10 | – | 1210 | – | Standard | 1.45 | 0.47 | 1.4 | 0.56 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 750810131 | SPEC | |
| 7447010 | SPEC | – |
| 74408943820 | SPEC | |
| 7447713102 | SPEC | |
| 7447709471 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | fres (MHz) | Version | IRP,40K (A) | L (mH) | IR (A) | RDC max. (Ω) | Samples |
|---|