Common Power Supply Topologies

The three basic topologies used in switching power supplies are buck

Author: XP-Power

 
The three basic topologies used in switching power supplies are buck, also known as forward, boost and buckboost, also known as Flyback. All three topologies use the same three elements, transistor, inductor and diode but they are arranged in different manners. The essential difference between the three topologies is that the buck has an output voltage lower than its input, the boost has an output voltage higher than its input and the flyback can have an output voltage either higher or lower than its input but inversed in polarity.
 

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