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Nowadays, switched-mode power supplies (SMPS) are widely used due to its efficiency compared to linear power supplies. Essentially switched mode power supplies or SMPS act as DC to DC converters. The forward converter comes from the buck topology of DC to DC converters. The main difference between the two topologies is that the transformer employed in the forward topology provides input-output ground isolation as well as a step-down or step-up function. The transformer in a forward topology does not inherently reset each switching cycle as do symmetrical topologies (push-pull, half-bridge, and full-bridge). Read more