| 摘要 |
Disclosed is an electronic device wherein: a first semiconductor device having a switching power transistor is mounted on a power wiring board PB1; a semiconductor device PKG6 having a drive circuit that drives the first semiconductor device, and a semiconductor device PKG5 having a control circuit that controls the semiconductor device PKG6 are mounted on a first main surface of a control wiring board PB2; and a semiconductor device PKG4 having a regulator circuit is mounted on a second main surface of the control wiring board PB2. The semiconductor device PKG5 and the semiconductor device PKG6 are mounted on, out of a second region and a third region, the second region of the first main surface of the control wiring board PB2, said second region and third region being adjacent to each other by having therebetween a first region where a plurality of holes HC3 are disposed. The semiconductor device PKG4 is mounted on, out of a fourth region positioned on the reverse side of the second region, and a fifth region positioned on the reverse side of the third region, the fifth region on the second main surface of the control wiring board PB2. |
