Multi-die power semiconductor device packaged on a lead frame unit with multiple carrier pins and a metal clip

摘要

A power semiconductor device comprises a lead frame unit, a control die, a first MOSFET die and a second MOSFET die, wherein the lead frame unit comprises at least a die paddle for mounting the first and second MOSFET dies, a first pin and a second pin for connecting to top electrodes of the first and second MOSFET dies, a first row of carrier pins and a second row of carrier pins disposed in-line with the first and second pins respectively for the control die to mount thereon.

主权项

1. A power semiconductor device comprising:
a lead frame unit, a control die, a first die and a second die, and a metal clip wherein the lead frame unit comprises a first die paddle and a second die paddle disposed side by side adjacent but separated from each other, a first pin and a first row of carrier pins adjacent to the first die paddle and a second pin and a second row of carrier pins adjacent to the second die paddle; the first and second die paddles each comprises respectively a first transverse edge and a second transverse edge opposite to the first transverse edge, a first longitudinal edge and a second longitudinal edge opposite to the first longitudinal edge, wherein the first pin comprises a bonding area adjacent to and extending along the first transverse edge of the first die paddle, and the second pin comprising a bonding area adjacent to and extending along the second transverse edge of the second die paddle; both of the first row of carrier pins and the second row of carrier pins are positioned at one side of the second longitudinal edges of the first and second die paddles away from the first longitudinal edges, each carrier pin of the first row of carrier pins is substantially parallel to each other and extends from an extension line of the first pin towards a center line between the first transverse edge of the first die paddle and the second transverse edge of the second die paddle, and each carrier pin of the second row of carrier pins is substantially parallel to each other and extends from an extension line of the second pin towards the center line; each of the first die and the second die has a back surface attached onto the first and second die paddles respectively and the control die is attached onto the first row of carrier pins and the second row of carrier pins, wherein the metal clip electrically connects a first electrode at a front surface opposite to the back surface of the first die and a first electrode at a front surface opposite to the back surface of the second die to the second pin.