Features

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•

Frequency: 50-60Hz

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Output voltage: 12 V

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Output current: 416 mA

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Highly compact size

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Average efficiency: > 77%

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Tight line and load regulation over the entire input and output range

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Meets IEC55022 Class B conducted EMI even with reduced EMI filter, thanks to

the frequency jittering feature

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RoHS compliant

Description

The STEVAL-VP12201F evaluation board implements a 12 V - 5 W isolated flyback

The reference design is built around the new VIPer122LS offline high-voltage

converter from the VIPerPlus family, with embedded 730 V Power MOSFET and

PWM current-mode control.

The main characteristics of the evaluation board are its small size and minimal BOM,

high efficiency, low stand-by consumption and tight line and load regulation over the

entire input and output range. Extremely low consumption under no-load condition is

ensured thanks to burst mode operation, which reduces the average switching

frequency and minimizes all frequency related losses.

VIPer122LS operates at fixed frequency 60kHz with frequency jittering to meet the

standards regarding electromagnetic disturbance.

Product summary

12 V/5 W power supply

in isolated flyback

topology featuring the

VIPer122 offline HV

converter

STEVAL-

VP12201F

high performance, high

voltage converter with

embedded Power

MOSFET and PWM

control

VIPER122

Applications

Isolated

Auxiliary

Power Supply

up to 20W

12 V - 5 W isolated flyback converter based on VIPer122LS

STEVAL-VP12201F

Data brief

DB4121 - Rev 1 - October 2020

For further information contact your local STMicroelectronics sales office.

www.st.com