Patent ID: 8653601

Claim:
A current control semiconductor element comprising: a main MOSFET that drives a current; and a sense MOSFET that is connected to the main MOSFET in parallel and detects a current shunted from a current of the main MOSFET, the main MOSFET and the sense MOSFET being arranged on the same semiconductor chip, wherein the main MOSFET is formed using a multi-finger MOSFET that has a plurality of channels and is arranged in a row, wherein a part of the channels of the multi-finger MOSFET is used as a channel for the sense MOSFET, and wherein when a distance between the center of the multi-finger MOSFET and a channel located farthest from the center of the multi-finger MOSFET is indicated by L, a channel that is located closest to a position distant by a distance of (L/√3)) from the center of the multi-finger MOSFET is used as the channel for the sense MOSFET.