Plataforma de controle por modo tensão com limitação de corrente para aplicação em conversores CC-CC da família Buck

Abstract

This work presents a control system, voltage mode with current limitation. For its development we use power electronics and control systems, through the EasyEDA platform that allows the manufacture of the PCB -Printed Circuit Board. To perform the PWM modulations and the control system, the DC-DC buck, one-key forward, two-key forward, push-pull, half-bridge and full-bridge converters were used as an example. An example of application of the control system that is the battery charger will be presented, it will also be shown a circuit of an auxiliary flyback source that has the function of feeding the board and finally the design of a buck converter used as a power supply, where the development of the design of both the voltage loop and the current loop will be presented, this circuit is simulated in the PSIM software where the buck converter waveforms are presented in steady and dynamic regime with output power, higher and lower than the nominal.