| 摘要 |
PURPOSE: A solenoid driving device is provided to reduce electromagnetic wave noise by forming a ground pattern between a power supply pattern and an application specific integrated circuit (ASIC) and reducing a loop gap. CONSTITUTION: A solenoid driving device comprises a substrate, an ASIC, a battery connection pattern (131), a connection pattern (133), a ground pattern (134), and a power supply pattern (132). The substrate is made of a plurality of layers (111-114) and is mounted with one or more solenoids (200). The ASIC is inserted into the pin hole of the substrate, is electrically connected to the substrate, and controls a current applied to a solenoid. The battery connection pattern is formed on the top layer of the substrate and is connected to the bipolar terminal of a battery. The connection pattern connects the pin of the ASIC and the lead wire (240) of a solenoid. The ground pattern is formed on the first inner layer of the substrate. The ground pattern is connected to the ground terminals of a plurality of elements and the negative terminal of the battery. The power supply pattern is formed on the second inner layer of the substrate and supplies the power of the battery to the solenoid. |
