Modelling, Analysis and Control of Multiphase Synchronous Buck Converters
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Abstract
Step-down multiphase dc-dc converters enable very low voltages and high currents through parallel operation. Additionally, high redundancy, fault tolerance and very fast output voltage dynamics can be obtained by using synchronous switching and interleaving. The current balance in the various converters can be achieved by different methods: average current control, peak current control, etc. This paper analyzes and compares the steady-state and dynamic performance of two current control methods from simulations and experimental results when using three paralleled converters. It is concluded that similar performance is achieved by the two methods.
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