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US 2023/0065848 A1Published application
Efuse circuit and control method thereof
AssigneeChengdu Monolithic Power Systems Co., Ltd.
InventorLei Li
Life of this patent
Estimating the term…
Abstract
A method for controlling an efuse circuit is provided. The method includes the following steps. A sample signal of a switch is provided. An error signal is generated according to the sample signal and a reference signal. The error signal is compared with a threshold. A voltage across a control node of the switch and an output node of the switch is clamped to a preset voltage value when the error signal is greater than the threshold.
Claims20
An efuse circuit, comprising:
- a switch having an input node, an output node, and a control node;
- a sample circuit configured to provide a sample signal of the switch;
- a closed-loop control circuit configured to receive the sample signal, and generate an error signal according to the sample signal;
- and
- a pull-down circuit having a first node, a second node, and a third node, wherein the first node of the pull-down circuit is configured to receive the error signal, the second node of the pull-down circuit is coupled to the control node of the switch, and the third node of the pull-down circuit is coupled to the output node of the switch, and the pull-down circuit is further configured to clamp a voltage across the control node of the switch and the output node of the switch to a preset voltage value when the error signal is greater than a threshold.
2 more elements
A method for controlling an efuse circuit, comprising:
- providing a sample signal of a switch;
- generating an error signal according to the sample signal and a reference signal;
- comparing the error signal with a threshold;
- and
- clamping a voltage across a control node of the switch and an output node of the switch to a preset voltage value when the error signal is greater than the threshold.
2 more elements
Dependencies are inferred from the claim text.