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19Basic Switching Circuits
2.4 Inverting Boost Converter
Figure 2.5 shows the circuit of an ideal inverting boost converter. The switch and voltage
source provide current to charge the inductor with energy while the switch is closed.
While the inductor is charging, the current in the load is supplied by the capacitor because
the diode is reverse biased. When the switch opens, the current in the inductor continues
to fl ow, but now the inductor current forward biases the diode and fl ows through the load
circuit. Since one side of the inductor is tied to the common point, the current fl ow when
the switch opens causes ...