| 摘要 |
An object is to provide a control board, an inverter device, and an integrated-inverter electric compressor that are capable of improving electromagnetic compatibility (EMC property) and improving reliability against input/output of electromagnetic noise, which shows a tendency towards greater complexity and intensity. A control board (21) to which two power systems, that is, a low-voltage power system and a high-voltage power system, are input, comprising a low-voltage circuit and a high-voltage circuit, and a low-voltage-side ground region (26) and a high-voltage-side ground region (27) that are formed in correspondence with the circuits, respectively, wherein frame ground regions (28A, 28B, 28C, and 28D) are provided at a plurality of positions on the control board (21), and a plurality of communication line patterns (23A and 23B) connected to the low-voltage circuit are respectively connected to both the low-voltage-side ground region (26) and the frame ground region (28A) through capacitance elements (29A, 29B, 30A, and 30B) with various capacitances.
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