Patent ID: 11973138
Assignee: TRANSPHORM TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of operating a circuit comprising a depletion-mode transistor having a channel and an enhancement-mode transistor wherein a source of the depletion-mode transistor is connected to a drain of the enhancement-mode transistor, the method comprising:
biasing a gate of the depletion-mode transistor and a gate of the enhancement-mode transistor at zero volts and biasing a positive voltage to a drain of the depletion-mode transistor and blocking a current in a forward direction;
changing the bias of the gate of the enhancement-mode transistor to a first voltage greater than a threshold voltage of the enhancement-mode transistor while the gate of the depletion-mode transistor remains biased at zero volts such that a first current is allowed to flow through the channel in a forward direction; and
changing the bias of the gate of the depletion-mode transistor to a second voltage while the gate of the enhancement-mode transistor remains biased at the first voltage such that a second current is allowed to flow through the channel in a forward direction; wherein the second current is greater than the first current.