Bridge circuits and their components
AssigneeTransphorm Inc.
InventorsJames Honea, Yifeng Wu
Life of this patent
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Abstract
A half bridge is described with at least one transistor having a channel that is capable in a first mode of operation of blocking a substantial voltage in at least one direction, in a second mode of operation of conducting substantial current in one direction through the channel and in a third mode of operation of conducting substantial current in an opposite direction through the channel. The half bridge can have two circuits with such a transistor.
Claims30
A half bridge comprising:
- a first switch comprising a first transistor and a second switch comprising a second transistor, wherein
- a source of the first switch is connected to a drain of the second switch,
- the first or second transistor comprises a channel and lacks an intrinsic diode anti-parallel to the channel,
- the first switch further comprises a third transistor having a terminal connected to the first transistor, and
- the third transistor includes a parasitic diode and the half bridge includes a low voltage diode connected in parallel to the parasitic diode.
A half bridge comprising a first transistor and a second transistor, the first transistor having a gate, a source, a drain, a channel, and a threshold voltage, wherein the first transistor is configured to conduct substantial current through the channel in a first direction both when the gate is biased relative to the source at a voltage higher than the threshold voltage and when the gate is biased relative to the source at a voltage lower than the threshold voltage.
Dependencies are inferred from the claim text.