Patent ID: 9263439
Filing Date: 2016-02-16
CPC Classification: H01L,H03K

Claim Text:
1. A III-nitride switching device comprising: a high threshold III-nitride transistor for being switched by a driver circuit; a low threshold III-nitride diode connected transistor coupled across said high threshold III-nitride transistor at a common source node and a common drain node, said low threshold III-nitride diode having a gate and a source, said gate being coupled to said source at said common source node; wherein said high threshold III-nitride transistor comprises a high threshold voltage more than four times larger than a low threshold voltage of said low threshold III-nitride diode connected transistor, and provides noise immunity for said III-nitride switching device in a forward mode; wherein a low resistance interconnect metal connects said gate and said source of said low threshold III-nitride diode connected transistor so that said low threshold voltage of said low threshold III-nitride diode is substantially equal to a voltage drop of said low threshold III-nitride diode in a reverse mode; wherein said low threshold III-nitride diode connected transistor functions as a parallel diode for protection of said III-nitride switching device in said reverse mode; wherein said III-nitride switching device comprises a combination of E-mode and D-mode GaN HEMTs.