摘要:
In a non-insulated DC-DC converter having a circuit in which a power MOS•FET high-side switch and a power MOS•FET low-side switch are connected in series, the power MOS•FET low-side switch and a Schottky barrier diode to be connected in parallel with the power MOS•FET low-side switch are formed within one semiconductor chip. The formation region SDR of the Schottky barrier diode is disposed in the center in the shorter direction of the semiconductor chip, and on both sides thereof, the formation regions of the power MOS•FET low-side switch are disposed. From the gate finger in the vicinity of both long sides on the main surface of the semiconductor chip toward the formation region SDR of the Schottky barrier diode, a plurality of gate fingers are disposed so as to interpose the formation region SDR between them.
摘要:
The present invention provides a non-insulated type DC-DC converter having a circuit in which a power MOS•FET for a high side switch and a power MOS•FET for a low side switch are connected in series. In the non-insulated type DC-DC converter, the power transistor for the high side switch, the power transistor for the low side switch, and driver circuits that drive these are respectively constituted by different semiconductor chips. The three semiconductor chips are accommodated in one package, and the semiconductor chip including the power transistor for the high side switch, and the semiconductor chip including the driver circuits are disposed so as to approach each other.
摘要:
A semiconductor device (2) includes: a FLR (65) that is disposed on a semiconductor substrate so as to divide the semiconductor substrate into an inner region and an outer region; a first bonding pad (24a to 24d) that is disposed in the inner region and is connected to an external circuit by a wire (14a to 14d) whose one end is connected to the external circuit; and a second bonding pad (26a to 26d) that is disposed in the outer region and on which the other end of the wire is bonded.
摘要:
The present invention provides a non-insulated type DC-DC converter having a circuit in which a power MOS•FET for a high side switch and a power MOS•FET for a low side switch are connected in series. In the non-insulated type DC-DC converter, the power transistor for the high side switch, the power transistor for the low side switch, and driver circuits that drive these are respectively constituted by different semiconductor chips. The three semiconductor chips are accommodated in one package, and the semiconductor chip including the power transistor for the high side switch, and the semiconductor chip including the driver circuits are disposed so as to approach each other.
摘要:
An electronic device and manufacturing thereof. One embodiment provides a semiconductor chip having a control electrode and a first load electrode on a first surface and a second load electrode on a second surface. A first lead is electrically coupled to the control electrode. A second lead is electrically coupled to the first load electrode. A third lead is electrically coupled to the first load electrode, the third lead being separate from the second lead. A fourth lead is electrically coupled to the second load electrode, the second and third leads being arranged between the first and fourth leads.
摘要:
In a structure of a semiconductor device, a Si chip and a metal leadframe are jointed by metallic bond via a porous joint layer made of high conductive metal, having a three-dimensional network structure and using Ag as a bonding material, and a film containing Zn oxide or Al oxide is formed on a surface of a semiconductor assembly contacting to a polymer resin. In this manner, by the joint with the joint layer having the porous structure mainly made of Ag, thermal stress load of the Si chip can be reduced, and fatigue life of the joint layer itself can be improved. Besides, since adhesion of the polymer resin to the film can be enhanced by the anchor effect, occurrence of cracks in a bonding portion can be prevented, so that a highly-reliable Pb-free semiconductor device can be provided.
摘要:
A solder-top enhanced semiconductor device is proposed for packaging. The solder-top device includes a device die with a top metal layer patterned into contact zones and contact enhancement zones. At least one contact zone is electrically connected to at least one contact enhancement zone. Atop each contact enhancement zone is a solder layer for an increased composite thickness thus lowered parasitic impedance. Where the top metal material can not form a uniform good electrical bond with the solder material, the device die further includes an intermediary layer sandwiched between and forming a uniform electrical bond with the top metal layer and the solder layer. A method for making the solder-top device includes lithographically patterning the top metal layer into the contact zones and the contact enhancement zones; then forming a solder layer atop each of the contact enhancement zones using a stencil process for an increased composite thickness.
摘要:
Consistent with an example embodiment, there is an integrated circuit (IC) device in a packaging having electrically insulated connections. The IC device comprises a semiconductor device (100) mounted onto a die attachment area (10); the semiconductor device has a plurality of bonding pads (20a, 25a, 30a, 35a). A lead frame having a plurality of bonding fingers (20b, 25b, 30b, 35b) surrounds the die attachment area. A plurality of mutually isolated connection conductors (25d, 30d, 40, 50) having respective first ends are attached to respective bonding pads on the semiconductor device and the plurality of mutually isolated connection conductors having respective second respective second ends are attached to respective bonding fingers of the lead frame. An insulating material (45) coats at least a portion of the plurality of mutually isolated connection conductors. The mutually isolated connection conductors may include a bond wire (40, 50) for the signal connection and a conductive strap (25d, 30d) for the voltage reference connection. The insulating material (45) coating the bond wires reduces the likelihood of short circuits during encapsulation.
摘要:
Provided is a thin semiconductor device using a thin metal wire and having a low top portion. The semiconductor device of the present invention has a structure in which a bonding pad 55 of a semiconductor chip 54 and an electrode 53B are connected to each other via a thin metal wire 51, and the thin metal wire 51 forms a curve portion 57. Specifically, the thin metal wire 51 exhibits the curve portion 57 from a first bond, and is provided with a linear second extending portion 60 with an end portion thereof being a first bend portion 59. A second bend portion 61 is located lower than a top portion 58 of the curve portion 57.
摘要:
One embodiment includes an encapsulated semiconductor package having a lead frame with die pad surrounded by a plurality of first and second leadfingers. A semiconductor chip including chip contact pads on its upper active surface is attached to the die pad. A plurality of first bond wires, incoluding a first electrically conductive material, extend between the chip contact pads and the plurality of first leadfingers. A plurality of second bond wires, including a second electrically conductive material, extend between a chip contact pad and a second leadfinger. The semiconductor package further includes a plurality of electrically conducting means attached to the second leadfingers.