High voltage bootstrap gate driving apparatus
AssigneeMaxchip Electronics Corp.
InventorsMing-Chi Kuo, Tsung-Chih Tsai, Jen-Yao Hsu
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Abstract
A high voltage bootstrap gate driving apparatus is provided. The gate driving apparatus includes a high-end transistor, a low-end transistor, a buffer, a boost capacitor, and a high voltage depletion transistor. The high-end transistor receives a first power voltage. The buffer provides a high-end driving signal to the high-end transistor according to a bias voltage. The boost capacitor is serial coupled between a base voltage and a bias voltage. A first end of the depletion transistor is coupled to a second power voltage, a second end of the depletion transistor is coupled to the bias voltage, and a control end of the depletion transistor receives the reference ground voltage.
Claims10
A high voltage bootstrap gate driving apparatus, comprising:
- a high-end transistor, having a first end, a second end, and a control end, wherein the first end of the high-end transistor receives a first power voltage;
- a low-end transistor, having a first end, a second end, and a control end, wherein the first end of the low-end transistor is coupled to the second end of the high-end transistor, and the second end of the low-end transistor is coupled to a reference ground voltage;
- a buffer, providing a high-end driving signal to the control end of the high-end transistor according to a bias voltage, and providing a low-end driving signal to the control end of the low-end transistor;
- a boost capacitor, serial coupled between a base voltage and the bias voltage, wherein the base voltage is produced at the second end of the high-end transistor;
- a depletion transistor, having a first end, a second end, and a control end, wherein the first end of the depletion transistor is coupled to a second power voltage, the second end of the depletion transistor is coupled to the bias voltage, and the control end of the depletion transistor receives the reference ground voltage.
Dependencies are inferred from the claim text.