Patent ID: 11936383
Assignee: TAGORE TECHNOLOGY, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An GaN integrated circuit chip comprising an electronic circuit that includes:
a GaN power switch including a drain node, a source node coupled to a Kelvin source, and a gate, the gate for receiving an input signal that
in a first range of signal level, controls an on state of the GaN power switch in which a direct electrical connection path in the GaN power switch is established between the drain node and the source node, or
in a second range of signal level, different from the first range, controls an off state of the GaN power switch in which the electrical connection path has an impedance approaching an open circuit;

a driver circuit, having an output that is electrically coupled to the gate of the GaN power switch, for providing the input signal; and
a bias-less Miller clamp protection circuit, electrically coupled to the output of the driver circuit and to the gate of the GaN power switch, for protecting the GaN power switch from turning from an off state to an on state in response to a parasitic Miller turn-on signal at the gate while a supply voltage for the driver circuit and for the protection circuit is absent, and wherein the bias-less Miller clamp protection circuit includes:
a HEMT switch having a drain connected to the gate of the GaN power switch, a source connected to the Kelvin source, and having a gate, and
a capacitor or a device operating like a capacitor, having one side connected to the drain node of the GaN power switch and another side electrically coupled to the gate of the HEMT switch,, wherein the GaN power device and the HEMT switch are monolithically integrated on a single chip.