 Welcome to this presentation on Viper Plus, your plus one in SMPS design. Viper, which stands for Vertical Intelligent Power Enhanced Regulator, is a family of ICs that is suitable for switched mode AC to DC power supplies. These ICs feature a leading edge PWM controller and an 800 volt Avalanche rugged power MOSFET. They also come with a small size package and a small system component count and support high efficiency topologies. Viper converters are very widely used in devices such as metering, home appliances, industrial, lighting, and adapters. Today, new energy saving regulations, either voluntary or mandatory, require further improvements in power supply efficiency. Viper Plus takes on this challenge by providing an SMPS design that is efficient, reliable, flexible, and cost effective. Directly connected to the rectified mains, Viper Plus ICs are the perfect solution to make an SMPS with few components and a simple feedback. The generated DC bus can be used to feed a microcontroller unit, a driver, or a relay. A different mix of features in the control sections identifies each Viper Plus series. Viper Zero P is characterized by its unique zero power mode and it is ideal for all SMPS up to 7 watts with a wide input voltage range. The Viper Plus Series 1 integrates a logic level MOSFET and an error amplifier that makes it possible to build a simple and ultra low consumption SMPS with a 5 volt output range. The Viper Plus Series 5 provides the highest efficiency using a quasi-resonant topology. Then the Viper Plus Series 6 integrates an error amplifier to meet the most advanced energy saving requirements, reducing the part count. The Viper Plus Series 7 features brownout and overvoltage protection for improved reliability. Finally, the Viper Plus Series 8 offers peak power capability to sustain 1-2 second overloads for enhanced robustness. The portfolio offers a wide choice of products with different sizes of the power stage section. The products in each Viper Series meet the requirements of different applications. You can find the best fit for the most popular topologies including quasi-resonant, flyback and buck configurations with either isolated or non-isolated implementations. The Viper Plus Series offers a comprehensive set of features. These include robustness and reliability that ensure an improved lifetime of the SMPS. Since they are designed to save energy, the Viper Plus Series are characterized by low consumption at any load and by best in class standby. Another feature is high integration that reduces the overall system size and cost. Moreover, they share the benefit of flexibility, allowing them to support the most popular topologies and power ranges. The applications targeted by the Viper Plus family cover practically all devices that are connected to the mains, including home appliances, consumer and adapters, lighting, metering as well as building and home control. All of these applications differ in power range and isolation requirements. The Viper Plus Series 1 and Viper Zero P dramatically reduce standby consumption. Viper Zero P is ideal for home appliances as its zero milliwatts standby consumption make it compliant with the European Lot 6 and with other energy-saving regulations. In smaller home appliances, the Viper Plus Series 6 can be used as a far more efficient replacement for capacitive power supplies with zero standby power, high efficiency at a light load, small EMI input filter and ultra-wide input voltage. Viper Plus Series 5, 7 and 8 are the recommended choices for applications supporting an isolated flyback topology. They feature low standby consumption, high efficiency as well as minimized size and weight. In lighting applications up to 15 watts, several Viper Plus Series are suitable for isolated and non-isolated topologies depending on the architecture. They have the requirements of low standby consumption, high efficiency, small size SMPS as well as robustness and long life. Meeting the requirements for power metering applications up to 15 watts such as high immunity to electrical discharge, reduced noise in the communication band and peak power for data transfer, the Viper Plus Series 6 is the ideal solution for non-isolated topologies and the Viper Plus Series 8 for isolated ones. Thanks to the features of low standby consumption, standby remote control, high efficiency at a light load and minimized size, these two series are ideal to supply microcontrollers used in building and home control applications. To make your design work easier, the Viper Plus product family is available with a number of tools and evaluation boards. These boards are fully operational power supplies with various power ranges and converter topologies. For further information and design support, please visit ST.com slash Viper Plus. Thank you very much for your attention.