Bootstrap capacitor charging circuit for GaN devices
AssigneeNavitas Semiconductor Limited
InventorsDaniel M. Kinzer, Santosh Sharma, Ju Jason Zhang
Life of this patent
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Abstract
GaN-based half bridge power conversion circuits employ control, support and logic functions that are monolithically integrated on the same devices as the power transistors. In some embodiments a low side GaN device communicates through one or more level shift circuits with a high side GaN device. Both the high side and the low side devices may have one or more integrated control, support and logic functions. Some devices employ electro-static discharge circuits and features formed within the GaN-based devices to improve the reliability and performance of the half bridge power conversion circuits.
Claims23
A charging circuit comprising:
- a GaN-based semiconductor circuit configured to allow unidirectional current flow from a ground referenced power supply to a floating power supply terminal, wherein the semiconductor circuit comprises an enhancement-mode transistor that includes a gate and a source connected to a common voltage potential.
An electronic power conversion component comprising:
- a package base;
- one or more GaN-based dies secured to the package base and including a charging circuit comprising:
- a GaN-based semiconductor circuit configured to allow unidirectional current flow from a ground referenced power supply to a floating power supply terminal, wherein the semiconductor circuit comprises an enhancement-mode transistor that includes a gate and a source connected to a common voltage potential.
An electronic power conversion component comprising:
- a package base;
- and
- one or more GaN-based dies secured to the package base and including a charging circuit comprising:
- a GaN-based semiconductor circuit configured to allow unidirectional current flow from a ground referenced power supply to a floating power supply terminal, wherein the semiconductor circuit includes an enhancement mode transistor having a drain that is connected to a source of a depletion mode transistor, and wherein a drain of the depletion mode transistor is connected to the floating power supply terminal.
A charging circuit comprising:
- a GaN-based semiconductor circuit configured to allow unidirectional current flow from a ground referenced power supply to a floating power supply terminal, wherein the semiconductor circuit comprises an enhancement mode transistor that includes a gate that is controlled by a gate drive circuit and a drain connected to the floating power supply terminal and to a source of a depletion mode transistor, and wherein a drain of the depletion mode transistor is connected to the floating power supply terminal.
Dependencies are inferred from the claim text.