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Triple Output Isolated Flyback Converter for STCOMET Smart Meters and PLC Systems Using VIPER267KDTR

STEVAL-VP26K01F

Overview

The STEVAL-VP26K01F evaluation board implements a three output isolated flyback specifically designed to supply the STCOMET smart meter and powerline communication system.

The board has been developed using the VIPER267KDTR offline high-voltage converter.
The VIPER267KDTR 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 15 V at 550 mA_rms (700 mA peak) to the power line modem (PLM) and the analog circuitry, a post-regulated 5 V at 100 mA and a 3.3 V at 200 mA supply through a dedicated DC-DC converter connected to the 15 V rail for digital circuitry and other low voltage parts.
The power supply is designed to operate across an extended 90 to 440 V_AC mains input voltage range to be used also with a phase-to-phase connection in a three-phase network.
The STEVAL-VP26K01F evaluation board can be used in a standalone configuration or with the dedicated STCOMET development kit.

Main features

Triple output voltage: 15 V at 0.55 A_rms (0.7 A peak), 3.3 V at 200 mA and 5 V at 100 mA
Extended AC mains input voltage range: 90 to 440 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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Update:2025-06-20 10:44:57

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