Self-driven gate-driving circuit
AssigneeDelta Electronics, Inc.
InventorPo-Chin Chuang
Life of this patent
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Abstract
A gate-driving circuit for turning on and off a switch device including a gate terminal coupled to a driving node, a drain terminal coupled to a power node, and a source terminal is provided. The gate-driving circuit includes a driving switch and a voltage control circuit. The driving switch includes a gate terminal coupled to a control node, a drain terminal coupled to the power node, and a source terminal coupled to the driving node. The voltage control circuit is coupled between the control node and the driving node. When a positive pulse is generated at the control node, the voltage control circuit provides the positive pulse to the driving node with a time delay.
Claims22
A gate-driving circuit for turning on and off a switch device comprising a gate terminal coupled to a driving node, a drain terminal coupled to a power node, and a source terminal, the gate-driving circuit comprising:
- a driving switch, comprising a gate terminal coupled to a control node, a drain terminal coupled to the power node, and a source terminal coupled to the driving node;
- a voltage control circuit, coupled between the control node and the driving node, wherein when a positive pulse is generated at the control node, the voltage control circuit provides the positive pulse to the driving node with a time delay;
- and
- a second voltage control circuit, coupled between the driving node and the source terminal of the switch device and configured to clamp a voltage from the gate terminal to the source terminal of the switch device.
Dependencies are inferred from the claim text.