Power device

摘要

A power device possesses a built-in fuse function and can continue to normally operate after a short circuit failure. The power device includes a plurality of output cells, a plurality of bonding wires provided corresponding to the output cells, and a control terminal driving circuit. Each of the output cells includes an output transistor. First side electrodes of the output transistors are commonly coupled to a first power source. Each of second side electrodes of the output transistors is coupled to an output terminal through the corresponding bonding wire. The control terminal driving circuit supplies a drive signal to the control terminals of the individual output transistors to control the output transistors. Each of the bonding wires is designed to be fused and cut if the output transistor included in the corresponding output cell fails and is shorted.

主权项

1. A power control unit for use in an automobile, comprising:
a power device adapted to drive a load of the automobile, the power device including a first lead frame having a semiconductor chip mounted thereon, the first lead frame including a power source terminal adapted to couple with a battery, the semiconductor chip including a plurality of transistors coupled with the first lead frame and a second lead frame, the second lead frame being coupled with the load, each of the plurality of transistors is separately coupled with the second lead frame via a corresponding bonding wire, each bonding wire having a first end directly connected to one of the plurality of transistors and a second end directly connected to the second lead frame, a control circuit for controlling each of the plurality of transistors; and a microcomputer for controlling the power device.