US 11,757,336 B2
Electronic control device
Tetsurou Tateyama, Hitachinaka (JP); Kumiko Yoshinaga, Hitachinaka (JP); Eiji Ichikawa, Hitachinaka (JP); Hirofumi Watanabe, Hitachinaka (JP); and Mototaka Takahashi, Hitachinaka (JP)
Assigned to HITACHI ASTEMO, LTD., Hitachinaka (JP)
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
Filed on Aug. 12, 2022, as Appl. No. 17/887,263.
Application 17/887,263 is a continuation of application No. 16/957,882, granted, now 11,444,516, previously published as PCT/JP2018/048413, filed on Dec. 28, 2018.
Claims priority of application No. 2017-253047 (JP), filed on Dec. 28, 2017; and application No. 2018-243938 (JP), filed on Dec. 27, 2018.
Prior Publication US 2022/0385147 A1, Dec. 1, 2022
Int. Cl. H02K 11/33 (2016.01); H05K 1/02 (2006.01)
CPC H02K 11/33 (2016.01) [H05K 1/028 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electronic control device applied to a drive control of an electric motor having a dual coil, the electronic control device having drive circuits for two systems corresponding to the dual coil, the electronic control device comprising:
a multilayer wiring board having a plurality of wiring layers and insulating layers that insulate the wiring layers, and wherein
a detecting element configured to detect an operating state of the electric motor is mounted on the multilayer wiring board, and control systems for two systems corresponding to the dual coil are formed by electronic components mounted on the multilayer wiring board,
each of the control systems includes at least a CPU, a pre-driver circuit configured to convert a command signal of the CPU into a control signal of the drive circuit, a capacitor unit and a filter unit,
when projecting the multilayer wiring board onto a plane, the control systems for two systems are arranged parallel to each other with the capacitor unit and the filter unit being arranged along arrangement of the CPU and the pre-driver circuit, and
when projecting the multilayer wiring board onto a plane, the detecting element is positioned so as to be arranged between the two control systems.