Dual Output Isolated SSR Flyback Converter Using VIPER267KDTR for Smart Meters and PLC Systems

STEVAL-VP26K02F

Overview

The STEVAL-VP26K02F evaluation board implements a double output isolated SSR flyback specifically designed to supply smart meter and PLC systems.

The evaluation board has been developed using the VIPER267KDTR offline high-voltage converter which features a 1050 V avalanche-rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with 700 mA fixed set point, on-board soft-start, safe auto-restart after fault and low standby power.
The power supply provides 12 V at 700 mA_rms (1 A peak) to the power line modem (PLM) and the analog circuitry, and 6 V at 200 mA to supply digital circuitry and other low voltage parts.
The power supply is designed to operate across a three-phase input mains from 50 to 290 V_AC but can also be connected to a single phase mains from 85 to 500 V_AC.

Main features

Double output voltage: 12 V at 0.7 A_rms (1 A peak) and 6 V at 200 mA
Secondary side regulation (SSR)
Extended AC mains input voltage range: 85 to 500 V_AC
EMC with EN55022, EN61000, EN61000-4-4, EN61000-4-5, EN61000-4-6
WEEE compliant
RoHS compliant

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-05-08 12:31:02

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