Patent ID: 8810229
Filing Date: 2014-08-19
Classification: H02M

Abstract:
1. A DC/DC converter comprising: a converter circuit which includes an inductor and a switching element coupled to the inductor, the converter circuit changing an inductor current flowing through the inductor according to on/off of the switching element to thereby convert an input dc voltage into an output dc voltage having a magnitude corresponding to each of an on time and an off time of the switching element and supplying the converted output dc voltage to a load; an inductor current detecting unit which detects the inductor current when the switching element is in an on state; a load current detecting unit which detects a load current flowing through the load from the converter circuit; and a control circuit which determines an upper limit value of the inductor current based on the load current and the input dc voltage and changes at least one of the on and off times of the switching element in such a manner that the detected inductor current does not exceed the upper limit value.