GATE DRIVER CIRCUIT
First Claim
Patent Images
1. A gate driver circuit, comprising:
- a driving signal generating unit configured to generate first and second control signals based on a data signal and a fault state signal and control gate detection;
a driving inverter configured to operate in response to the first and second control signals to generate a gate signal and provide the gate signal to a power switch element; and
a soft turn-off/gate detecting unit configured to operate in response to the second control signal, perform a soft turn-off in the case of a fault, and detect the gate signal to provide a detected signal.
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Abstract
A gate driver circuit may include a driving signal generating unit generating first and second control signals based on a data signal and a fault state signal and controlling gate detection, a driving inverter operating in response to the first and second control signals to generate a gate signal and providing the gate signal to a power switch element, and a soft turn-off/gate detecting unit operating in response to the second control signal, performing a soft turn-off in the case of a fault, and detecting the gate signal to provide a detected signal.
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Citations
19 Claims
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1. A gate driver circuit, comprising:
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a driving signal generating unit configured to generate first and second control signals based on a data signal and a fault state signal and control gate detection; a driving inverter configured to operate in response to the first and second control signals to generate a gate signal and provide the gate signal to a power switch element; and a soft turn-off/gate detecting unit configured to operate in response to the second control signal, perform a soft turn-off in the case of a fault, and detect the gate signal to provide a detected signal. - View Dependent Claims (2, 3, 4, 5)
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6. A gate driver circuit, comprising:
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a driving signal generating unit configured to generate first and second control signals based on a data signal and a fault state signal and control gate detection; a driving inverter configured to operate in response to the first and second control signals to generate a gate signal and provide the gate signal to a power switch element; a soft turn-off/gate detecting unit configured to operate in response to the second control signal, perform a soft turn-off in the case of a fault, and detect the gate signal to provide a detected signal; a clamp controlling unit configured to provide a gate clamp control signal based on the second control signal and the detected signal; and an active clamp circuit unit configured to operate in response to the clamp control signal of the clamp controlling unit to connect a gate of the power switch element to a ground. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A gate driver circuit, comprising:
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a driving signal generating unit configured to generate first and second control signals based on a data signal and a fault state signal and control gate detection; a driving inverter configured to operate in response to the first and second control signals to generate a gate signal and provide the gate signal to a power switch element; a soft turn-off/gate detecting unit configured to operate in response to the second control signal, perform a soft turn-off in the case of a fault, and detect the gate signal to provide a detected signal; a clamp controlling unit configured to provide a gate clamp control signal based on the second control signal and the detected signal; and an active clamp circuit unit configured to operate in response to the clamp control signal of the clamp controlling unit to connect a gate of the power switch element to a ground, wherein the driving signal generating unit and the clamp controlling unit are implemented as a logical circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification