II. MODELING OF DC-DC BOOST CONVERTER
The proposed model of open-loop boost converter using
a MOSFET as a switching element is shown in Fig. 1. The
specifications of the converter’s parameters are shown in
Table 1.
Figure 1. Boost converter circuit.
The mode of operation of boost converter is based on two
states; ON state and OFF state. It is also known as charging
mode instead of ON state, and discharging mode instead of
OFF state. During the charging mode; when the switch is
closed, the diode is in reversed-biased condition. When the
switch is open that is discharging mode, the inductor current
cannot change instantaneously, thus the diode becomes
forward-biased in order to provide a path for inductor
current. A current generator IZ is added in parallel with the
load resistor to facilitate in examining the response of the
converter to the load changes.