US 12,323,143 B2
Charge pumps, logic circuits including charge pumps, logic devices including logic circuits, and methods of operating logic circuits
Santosh Sharma, Austin, TX (US); and Mei Yu Soh, Singapore (SG)
Assigned to GlobalFoundries U.S. Inc., Malta, NY (US)
Filed by GlobalFoundries U.S. Inc., Malta, NY (US)
Filed on Feb. 10, 2023, as Appl. No. 18/167,279.
Prior Publication US 2024/0275385 A1, Aug. 15, 2024
Int. Cl. H03K 19/0185 (2006.01); H03K 17/10 (2006.01); H03K 17/687 (2006.01); H03K 19/00 (2006.01); H03K 19/017 (2006.01)
CPC H03K 19/018535 (2013.01) [H03K 17/102 (2013.01); H03K 17/6871 (2013.01); H03K 19/0013 (2013.01); H03K 19/01721 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A charge pump for a GaN logic circuit, comprising:
a first transistor configured to pull down an output voltage in response to an input voltage having a first level and pull up the output voltage in response to the input voltage having a second level; and
a second transistor having a first gate, a second gate, and an output terminal coupled to a gate of the first transistor and being configured to provide a first saturation current therethrough,
wherein the second transistor is configured to adjust the first saturation current therethrough by a second saturation current flowing into the first gate of the second transistor in response to the input voltage having the second level.