Patent ID: 8450803
Filing Date: 2013-05-28
Classification: G05F,H01L,H02M

Abstract:
1. A semiconductor device comprising: a device main body including a semiconductor substrate mounting part, a first portion configured to be supplied at least one of a current and a voltage, and a second portion configured to be input and output a signal, the first portion and the second portion being provided around the semiconductor substrate mounting part; and a semiconductor substrate including a DC-to-DC converter control circuit; the DC-to-DC converter control circuit including a first switch element connected to a power supply terminal and a first terminal, and a controller configured to controlled the first switch element, the controller including a current detector configured to detect a current flowing through the first portion, and an error amplifier configured to be input a feedback voltage fed back via the second portion, and to output an error of the feedback voltage, and the semiconductor substrate being disposed to be offset with respect to a virtual center line of the semiconductor substrate mounting part, a length of a wire connecting the power supply terminal and the first portion and a length of a wire connecting a ground terminal and the first portion being shorter than a length of a wire connecting the second portion and a terminal configured to be input the feedback voltage.