STEVAL-ISA162V1: 10W, 12V @ 0.84A, 90 ~ 265 VAC


The STEVAL-ISA162V1 evaluation board implements an isolated flyback (12 V/0.84 A) 10 W wide-range mains developed for general purpose applications. The core of the application is the VIPer25HD, a new off-line high voltage converter from the VIPerPlus family. The device is a high-voltage converter that "smartly" integrates an 800 V rugged power MOSFET with PWM current mode control.

The main characteristics of the board are its small size, minimal BOM, high efficiency and low standby consumption. Extremely low consumption under no-load conditions is ensured thanks to burst mode operation that reduces the average switching frequency and minimizes all frequency related losses. The VIPer25HD operates in quasi-resonant mode, a feature that helps it meet standards for electromagnetic disturbance. The IC features high level protection including duallevel OCP, output overvoltage, short-circuit and thermal shutdown with hysteresis. After the removal of a fault condition, the IC automatically restarts.


Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Single Output
Eval Board Part Number 497-15409-ND
Eval Board Supplier STMicroelectronics
Eval Board Normally In Stock
AC Voltage Universal (115 / 230V)
Outputs and Type 1 Isolated
Voltage Out 12 V
Current Out 840 mA
Output Power 10 W
Features Current Limit (Adj. or Fixed)
Frequency Foldback
Light Load Mode
Over Current Protection
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >86%, 115V in, 12V @ 210 ~ 840 mA
>85%, 230 VAC in, 12V @ 500 ~ 840 mA
No-load Input Power @ Voltage <35 mW @ 230 VAC
Switching Frequency 225 kHz
Internal Switch Yes
Component Count + Extras 38 + 2
Voltage In 90 ~ 265 VAC
Design Author STMicroelectronics
Application / Target Market Power: Auxiliary Power Supply
Set-Top Boxes
White Goods
Main I.C. Base Part VIPer25HD
Date Created By Author 2015-04
Date Added To Library 2020-08

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