Boost converters are used to generate high output voltages from low inputvoltages. Such a voltage conversion can easily be done with a switchingregulatorthat hasaboosttopology.However,thevoltagegainhasanaturallimit: Thevoltage gain is the ratio of output voltage to input voltage. If 24 V is generatedfrom 12 V, then the voltage gain is 2.
As an example, let’s look at an industrial application in which a voltage of 300 Vshould be generated with a 160-mA output current from a 24-V supply voltage.