AC-DC converters
ST’s high-voltage AC-DC converters combine an advanced pulse width modulation (PWM) controller with a high-voltage power MOSFET in a single package. This makes them ideally suited for offline switch mode power supplies (SMPS) with output power spanning from a few to a few tens of watts. The VIPerPlus series (VIPer0P, VIPer122, VIPer222 and VIPer*1, VIPer*5, VIPer*6, VIPer*7, VIPer*8 families) features an 800 V avalanche-rugged power MOSFET and leading-edge PWM controller and consumes less than 4 mW for VIPer0P, 10 mW for VIPer*1 and 30 mW in standby for the others. It also comes with the largest choice of protection schemes and supports different topologies. The VIPer26K belongs to VIPer*6 family and integrates a 1050 V avalanche-rugged power MOSFET, suitable for cost effective 1-phase/3-phases smart meters, industrial systems and lighting power supplies. The Altair series has a built-in 800/900 V avalanche-rugged power MOSFET and a PWM controller specifically designed to work in constant-current/constant-voltage primary-side regulation (PSR-CC/CV). It means opto-less implementation, thus significantly reducing component count.
ST’s high-voltage AC-DC converters family
Discover the Viper Plus family classified by major features

Tools
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STEVAL-VP12201F12 V - 5 W isolated flyback converter based on VIPer122LS The STEVAL-VP12201F evaluation board implements a 12 V - 5 W isolated flyback converter developed for general purpose applications supplied from 85 to 265 VAC. |
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STEVAL-VP319X1B5 V / 0.6 A Buck converter based on VIPER319X The STEVAL-VP319X1B evaluation board implements a 5V/3W Buck converter developed for general purpose applications, operating from 85 to 265VAC. |
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STEVAL-VP26K01FThree output isolated flyback converter for STCOMET smart meter and PLC system using VIPER267KDTR The STEVAL-VP26K01F evaluation board implements a three output isolated flyback specifically designed to supply the STCOMET smart meter and powerline communication system. |
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STEVAL-VP26K02FTwo output isolated SSR flyback converter for smart meter and PLC systems using VIPER267KDTR The STEVAL-VP26K02F evaluation board implements a double output isolated SSR flyback specifically designed to supply smart meter and PLC systems. |
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STEVAL-VP26K03FDouble output isolated PSR flyback converter for smart meter and PLC systems using VIPER267KDTR The STEVAL-VP26K03F evaluation board implements a double output isolated flyback with primary side regulation (PSR), specifically designed to supply smart meter and PLC systems. |
Videos
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Getting started with eDesignSuite |
VIPER26K 1050 V High voltage converter |
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