US 12,140,612 B2
Current detection device
Kiyoaki Kadoi, Tokyo (JP)
Assigned to ABLIC Inc., Nagano (JP)
Filed by ABLIC Inc., Tokyo (JP)
Filed on Mar. 7, 2023, as Appl. No. 18/180,105.
Claims priority of application No. 2022-036547 (JP), filed on Mar. 9, 2022; and application No. 2022-153271 (JP), filed on Sep. 27, 2022.
Prior Publication US 2023/0288454 A1, Sep. 14, 2023
Int. Cl. G01R 15/20 (2006.01); G01R 19/00 (2006.01)
CPC G01R 15/207 (2013.01) [G01R 19/0092 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A current detection device comprising:
a main busbar through which a detected current flows; and
a semiconductor chip spaced apart from the main busbar, wherein
the semiconductor chip comprises:
a branch busbar connected in parallel with the main busbar;
a detection part which is arranged adjacent to the branch busbar and detects a first magnetic field generated based on a branch current flowing from the main busbar to the branch busbar; and
an output part which calculates and outputs a current value based on the first magnetic field detected by the detection part.