Output specification: The output voltage is selected as 12V with 1A of current rating. It is also the standard voltage rating of India. So, the input AC voltage of this SMPS will be 220-240VAC. It is as per the European standard voltage rating. In this project, the input voltage is fixed. Input specification: This will be an SMPS in AC to DC conversion domain. Therefore, proper specification analysis needs to be done before proceeding with the actual design. This SMPS is also having a specification. Same as like previous SMPS based project, different kinds of power supply works in different environments and works in a specific input-output boundary. VIPer22A Power Supply Design Specifications This tutorial will take you through the complete circuit and will also explain how to build your own transformer for VIPER circuit. In this project we will build another 12V 1A SMPS circuit using the VIPer22A, which is a popular low cost SMPS driver IC from STMicroelectronics. We even did build our own SMPS transformer that could be used in our SMPS designs along with the driver IC. We have already built few SMPS circuits earlier like this 5V 2A SMPS circuit and 12V 1A TNY268 SMPS circuit. This type of AC-DC converters takes in the 230V/110V AC mains voltage as input and converts it to low level DC voltage by switching it, hence the name switch mode power supply. The first ST families available in PSpice via the OrCAD technology from Cadence will be dc-dc converters and ViPER monolithic ICs for SMPS eventually it will include nearly all ST’s extensive portfolio of analog and power products.Switched mode power supply circuits (SMPS) are most often in required in many electronic designs to convert the AC mains voltage to suitable level of DC voltage for the device to operate. 'Evaluating our chips with the Cadence software will strengthen our customers’ confidence to have received the highest quality ICs needed for their success.' 'OrCAD technology is a great way to enable our customers to test drive ST’s analog and power products,' said Carmelo Papa, Executive Vice President and General Manager, Industrial and Multisegment Sector, STMicroelectronics. PSpice OrCAD is a full-featured, native analog and mixed-signal circuit simulator that is considered the de-facto industry-standard Spice-based simulator for system design. From now on, designs obtained via Studio can be more accurately simulated within the Cadence OrCAD platform using PSpice.

ST’s analog products are already supported by ST’s Studio free online tool, which was conceived specifically to help the design and simulation of SMPS (Switch-Mode Power Supply) systems. The new IC evaluation platform enables Cadence® OrCAD®, PSpice® a robust and widely diffused technology for the simulation of ST’s analog and power product families. STMicroelectronics announced the development of a new evaluation platform allowing customers to perform simulations of ST’s analog and power chips.

Viper smps design software