A non-isolated DC/DC converter is used as the interface between a lithium-ion battery and a DC load, the DC load requires constant 12 V while the battery voltage changes from 9V to 16 V,
1) Among buck, boost, and buck/boost, converters, which one should be used in this case? Draw the circuit and mark the positive end of the input and output voltage;
2) Given the input voltage is changing from 9 V to 16 V, assuming continuous operation mode, what is the duty ratio that will result in maximum peak to peak current ripple through the inductor;
3) If the switching frequency of the converter is 100 kHz, output power is 24 W, to guarantee continuous current mode, what is the minimum inductance for the DC/DC converter.
