Patent ID: 8835239
Filing Date: 2014-09-16
Classification: H01L

Abstract:
1. A method for switching current using a segmented control FET and a segmented sync FET, the method comprising: partitioning a current into a plurality of current segments; distributing the plurality of current segments through a plurality of vias spaced along first control drain fingers of a first control FET and second control drain fingers of a second control FET, the first and the second control FETs comprising segments of a monolithic compound semiconductor device; switching the distributed current from the first control drain fingers to first control source fingers of the first control FET using first control gates and from the second control drain fingers to second control source fingers of the second control FET using second control gates, the first control gates electrically isolated from the second control gates; conducting current segments through continuous ohmic metal from the first control source fingers to first sync drain fingers in a first sync FET and from the second control source fingers to second sync drain fingers in a second sync FET, the first and the second sync FET comprising segments of the monolithic compound semiconductor device; switching distributed current from first sync drain fingers to first sync source fingers using first sync gates and from second sync drain fingers to second sync source fingers using second sync gates, the first sync gates electrically isolated from the second sync gates; and collecting the distributed current segments through a plurality of vias spaced along the first and the second control source fingers and the first and the second sync drain fingers.