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16 W Triple Output Quasi-Resonant Flyback Converter Using VIPer35LD for Air Conditioning Applications

STEVAL-ISA183V1

Overview

The STEVAL-ISA183V1 evaluation board implements a 16 W triple output power supply designed in quasi-resonant flyback topology, specifically designed as an auxiliary PSU for air conditioning systems.

The core of the application is the VIPER35LD high voltage converter from the VIPerPlus product family which integrates an 800 V rugged power MOSFET with a quasi-resonant PWM current-mode control.
The power supply provides an isolated 12 V / 1 A output a two non-isolated outputs, 15 V / 200 mA and 5 V / 200 mA respectively.
Other key features include high conversion efficiency, the extremely low consumption at no-load and at minimum operative output conditions and excellent EMI performance using a low cost input filter.
All of these features are concentrated in a small PCB footprint and a minimal bill of materials.

Main features

AC main input voltage range : 175 V_AC to 275 V_AC
Triple output voltages: 12 V - 1 A (isolated), 15 V - 200 mA (non-isolated), 5 V - 200 mA (non-isolated), continuous operation
High performance at low load conditions:
Efficiency at full load: > 81%
EMI: According to EN55022-Class-B, using low cost input filter
RoHS compliant

Design Files

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Update:2025-06-20 06:17:35

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