Control device, electronic apparatus, and control method

A control device to control a switching element connected to a conductor, the switching element executing a switching operation for causing the conductor to switch between a conductive state and a non-conductive state, the control device comprising:

• element controlling circuitry to control, when a target conduction ratio indicating a target value of a conduction ratio indicating a ratio of a length of a period during which the switching element is in an on-state to a length of a switching cycle is a positive value lower than 1, the switching element so as to be in the on-state during a period defined by a detective conduction ratio and the length of the switching cycle, in each of at least one cycle that is each the switching cycle, the detective conduction ratio being a value higher than the target conduction ratio and equal to or lower than 1;
• and
• current value measuring circuitry to measure, based on a detected current value, a value of direct current flowing in the conductor, the detected current value being digital data generated in every sampling cycle by detection of a current sensor signal, the sampling cycle being independent from the switching cycle, the current sensor signal being analog data output from a current sensor configured to measure a value of the direct current flowing in the conductor.