Is the inductance related to the inductance volume?

Is the inductance related to the inductance volume?

　First, let's look at the relationship between inductance and inductance volume: when the load current and input/output voltage are constant, choosing a larger inductance requires a large inductance. Then, we analyze the influence of frequency and load current on inductance and inductance volume respectively.

　　 1. The influence of frequency on inductance and inductance volume

　　 Other conditions remain unchanged, when the frequency f increases by 1 time, the inductance is reduced by half, and the inductance volume is reduced by half.

　　2. The influence of load current on inductance and inductance volume

　　 Keep the input voltage, output voltage and duty cycle unchanged, the inductance is inversely proportional to the load current, and the inductance volume is directly proportional to the load current.

　　 Generally, the rated current given by the supplier of the inductor includes three values: a larger direct current Idc, a larger effective value current Irms, and a saturation current Isat. Usually, only the lower one of the rated values is considered.

　　 Generally speaking, in mortgage applications (generally Vin<40v), only the inductance is selected by the larger working load current. This is the engineering design method of the DC/DC converter.

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