STEVAL-ISA184V1:5V/1.2A 12V/750mA double output flyback converter using VIPER37LD

The STEVAL-ISA184V1 evaluation board implements an isolated flyback double output (5 V / 1.2 A and 12 V / 0.75 A) 15 W wide range mains developed for general purpose applications.

The core of the application is the VIPer37LD off-line high voltage converter from the VIPerPlus family.

The device is a high-voltage converter that intelligently integrates an 800 V rugged power MOSFET with PWM current-mode control.

The main characteristics of the evaluation board are its small size and minimal BOM, high efficiency and low standby consumption. Extremely low consumption under no-load conditions is ensured thanks to burst mode operation, which reduces the average switching frequency and minimizes all frequency-related losses.

The VIPer37LD operates at 60 kHz fixed frequency, and frequency jittering is implemented to help meet the standards regarding electromagnetic disturbance. The several protections on the device like overvoltage, overload, output short circuit, secondary winding short, hard transformer saturation protection and brown out protections improve the safety and reliability of the design.

Key Features

  • Universal input mains range: 85 – 265 VAC ; frequency: 50 – 60 Hz
  • Output voltage 1: 5 V / 1.2 A
  • Output voltage 2: 12 V / 0.75 A
  • Very compact size
  • Standby mains consumption: < 40 mW at 230 VAC
  • Average efficiency: > 75%
  • EMI: according to EN55022-Class-B
  • RoHS compliant
Product Specifications
DescriptionVersionSize
DB3146: 5 V-12 V, 15 W double output isolated flyback converter based on VIPer37LD1.0215 KB
Application Notes
DescriptionVersionSize
AN4830: 15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D1.03 MB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-ISA184V1 gerber files1.060 KB
Bill of Materials
DescriptionVersionSize
STEVAL-ISA184V1 BOM1.032 KB
Schematic Packs
DescriptionVersionSize
STEVAL-ISA184V1 schematics1.0132 KB
License Agreement
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
Sample & Buy
Part NumberCore ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEVAL-ISA184V1VIPER37LD501NECEAR99ITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA184V1CARDIndustrialEcopack2
5 V-12 V, 15 W double output isolated flyback converter based on VIPer37LD STEVAL-ISA184V1
15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D STEVAL-ISA191V1
15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D STEVAL-ISA184V1
15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D STEVAL-ISA184V1
15 W, 5 V - 12 V double output, isolated flyback converter based on Viper37LE/D STEVAL-ISA184V1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2