Boost converter controller with inductance value determination

An apparatus, comprising:

• a boost converter comprising an inductor and configured to generate a boost voltage from a supply voltage;
• and
• a controller coupled to the boost converter and configured to:
• measure an inductance value of the inductor;
• and
• determine a slope compensation for the inductor based, at least in part, on the determined inductance, wherein the slope compensation is proportional to the determined inductance.

An integrated circuit, comprising:

• an audio input node configured to receive an audio signal;
• a supply input node configured to receive a supply voltage;
• a boost converter coupled to the supply input node, comprising an inductor, and configured to output a boost voltage higher than the supply voltage;
• a boost converter controller coupled to the boost converter and configured to:
• measure a current through the inductor;
• determine an inductance value of the inductor based, at least in part, on the measured current;
• and
• determine a slope compensation for the inductor based, at least in part on the determined inductance value, wherein the slope compensation is proportional to the determined inductance.