Electronic device

An electronic device comprising:

• a first wiring board having a first principle surface, a second principle surface opposite to the first principle surface, and a plurality of terminals;
• and
• a plurality of semiconductor devices mounted on the first principle surface of the first wiring board,
• wherein each of the plurality of semiconductor devices includes a high-side semiconductor chip having a high-side MOSFET, a low-side semiconductor chip having a low-side MOSFET, a high-side drain terminal electrically connected to a drain electrode of the high-side semiconductor chip, a low-side drain terminal electrically connected to a drain electrode of the low-side semiconductor chip, a low-side source terminal electrically connected to a source electrode of the low-side semiconductor chip, and a sealing member that seals the high-side semiconductor chip and the low-side semiconductor chip,
• a source electrode of the high-side semiconductor chip and the drain electrode of the low-side semiconductor chip of each of the plurality of semiconductor devices are electrically connected to each other,
• the plurality of terminals include a first terminal to which a power supply voltage is supplied, a second terminal to which a reference voltage is supplied, and a plurality of output terminals provided for the low-side drain terminal of each of the plurality of semiconductor devices,
• on the first principle surface of the first wiring board, a first conductor pattern electrically connecting the high-side drain terminal of the plurality of semiconductor devices to the first terminal, a second conductor pattern electrically connecting the low-side drain terminal of the plurality of semiconductor devices to the plurality of output terminals, and a third conductor pattern electrically connected to the second terminal are formed,
• the low-side source terminal of the plurality of semiconductor devices is electrically connected to the third conductor pattern, and
• when a minimum value of a current path width in the first conductor pattern is referred to as a first minimum width, a maximum value of the current path width in the first conductor pattern is referred to as a first maximum width, a minimum value of a current path width in the second conductor pattern is referred to as a second minimum width, and a maximum value of the current path width in the second conductor pattern is referred to as a second maximum width, the first minimum width is larger than half of the second maximum width in a case where the first minimum width is smaller than the second minimum width, and the second minimum width is larger than half of the first maximum width in a case were the second minimum width is smaller than the first minimum width.