Switching Voltage Regulators | Classification of SMPS The dc output of the rectifier or battery is not regulated. It varies according to the load variations. Switching Voltage Regulators | Classification of SMPS Switching mode regulators are used to convert unregulated dc to regulated DC output. The switching mode regulators use dc choppers. Below figure shows the block diagram of switching mode regulator. The dc chopper takes the input Vs from some unregulated supply. Block Diagram of Switching Mode Regulator The chopper may use Transistor, MOSFET, IGBT, SCR or GTO for switching. The comparator compares the reference voltage with output voltage. The reference voltage is set for the particular output voltage. The comparator generates the error signal. This error signal acts as the control voltage. The control block uses the control voltage Vc, to generate the drives of the chopper. Below figure show...