Semiconductor device including a transformer on chip
This application relates to a semiconductor device comprising a first chip comprising a first electrode on a first face of the first chip, and a second chip attached to the first electrode, wherein the second chip comprises a transformer comprising a first winding and a second winding.
1. A semiconductor device comprising:
a first chip comprising a first electrode on a first face of the first chip; and
a second chip attached to the first electrode, the second chip comprising a transformer comprising a first winding and a second winding,
a carrier comprising a first island to which the first chip is attached; and
a third chip attached to the carrier and electrically coupled to the first electrode of the first chip.
2. The semiconductor device according to claim 1 wherein the third chip comprises a first electrode on a first face of the third chip and a second electrode on a second face of the chip opposite to the first face.
3. The semiconductor device according to claim 2 further comprising a fourth chip attached to first electrode of the third chip.
4. The semiconductor device according to claim 2 further comprising a fourth chip attached to the carrier and electrically coupled to the first winding.
5. The semiconductor device according to claim 1 wherein the carrier comprises a second chip island to which the third chip is attached.
6. The semiconductor device according to claim 1 wherein the first chip and the third chip each comprise a power transistor.
7. The semiconductor device according to claim 6 wherein the power transistor of the first chip and the power transistor of the third chip form a half-bridge.