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公开(公告)号：US20230317600A1
公开(公告)日：2023-10-05
申请号：US17710971
申请日：2022-03-31
发明人： Chih-Hang Chang
IPC分类号： H01L23/525 , H01L27/112 , G11C17/16
CPC分类号： H01L23/5252 , H01L27/11206 , G11C17/165
摘要： An anti-fuse sensing device and an operation method thereof are provided. The anti-fuse sensing device includes an anti-fuse sensing circuit, a voltage generating circuit, and a power-on detection circuit. During a power-on transient period of the voltage generating circuit, the power-on detection circuit provides an initialization voltage to a control terminal of the anti-fuse sensing circuit to prevent a voltage level of the control terminal of the anti-fuse sensing circuit from being in an unknown state. After the power-on transient period ends, the voltage generating circuit provides a control voltage to the control terminal of the anti-fuse sensing circuit. The anti-fuse sensing circuit senses a resistance state of an anti-fuse based on the control voltage. During the period when the voltage generating circuit provides the control voltage, the power-on detection circuit stops providing the initialization voltage to the control terminal of the anti-fuse sensing circuit.
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公开(公告)号：US20240322684A1
公开(公告)日：2024-09-26
申请号：US18188427
申请日：2023-03-22
发明人： Chih-Hang Chang
摘要： A power down circuit and a power down method are provided. The power down circuit includes a holding circuit and a comparator. The holding circuit is coupled to receive a first power signal. The holding circuit is configured to hold the first power signal to generate a second power signal. The comparator is coupled to the holding circuit. The comparator is configured to compare the first power signal and the second power signal to determine whether the first power signal is dropped to be lower than a first threshold voltage.
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公开(公告)号：US20240019884A1
公开(公告)日：2024-01-18
申请号：US17866539
申请日：2022-07-17
发明人： Chih-Hang Chang
IPC分类号： G05F1/567 , G05F1/46 , G11C11/4074
CPC分类号： G05F1/567 , G05F1/461 , G11C11/4074
摘要： A power voltage supply device, including a reference bias voltage generating circuit, a temperature compensation bias voltage generating circuit, a compensation voltage generator, and a voltage buffer, is provided. The reference bias voltage generating circuit generates a reference bias voltage. The temperature compensation bias voltage generating circuit generates a temperature compensation bias voltage that changes as temperature rises. The compensation voltage generator generates a first power voltage based on the reference bias voltage, and selectively boosts the first power voltage based on the temperature compensation bias voltage. An input terminal of the voltage buffer receives the first power voltage. The voltage buffer generates a second power voltage corresponding to the first power voltage to a load circuit.
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公开(公告)号：US12007800B2
公开(公告)日：2024-06-11
申请号：US17866539
申请日：2022-07-17
发明人： Chih-Hang Chang
IPC分类号： G11C11/4074 , G05F1/46 , G05F1/567
CPC分类号： G05F1/567 , G05F1/461 , G11C11/4074
摘要： A power voltage supply device, including a reference bias voltage generating circuit, a temperature compensation bias voltage generating circuit, a compensation voltage generator, and a voltage buffer, is provided. The reference bias voltage generating circuit generates a reference bias voltage. The temperature compensation bias voltage generating circuit generates a temperature compensation bias voltage that changes as temperature rises. The compensation voltage generator generates a first power voltage based on the reference bias voltage, and selectively boosts the first power voltage based on the temperature compensation bias voltage. An input terminal of the voltage buffer receives the first power voltage. The voltage buffer generates a second power voltage corresponding to the first power voltage to a load circuit.
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公开(公告)号：US20240214013A1
公开(公告)日：2024-06-27
申请号：US18088736
申请日：2022-12-26
发明人： Chih-Hang Chang
IPC分类号： H04B1/04
CPC分类号： H04B1/0458 , H04B2001/0408
摘要： A transmission device is provided. The transmission device includes a voltage generator, a convertor, a voltage buffer and a transmission element. The voltage generator generates a first voltage signal according to a first current. The convertor generates a second current using a source current proportional to a temperature, generates a third current according to the first voltage signal, and converts a sum of the second current and the third current to a second voltage signal. The voltage buffer generates a driving voltage proportional to the temperature according to the second voltage signal. The transmission element operates based on the driving voltage.
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公开(公告)号：US11626177B1
公开(公告)日：2023-04-11
申请号：US17560287
申请日：2021-12-23
发明人： Chih-Hang Chang
摘要： An anti-fuse sensing device and an operation method thereof are provided. The anti-fuse sensing device is adapted for sensing a resistance state of an anti-fuse. The anti-fuse sensing device includes a voltage generating circuit, a comparison circuit, and a sensing circuit. The voltage generating circuit is configured to generate a comparison voltage that changes with temperature. The comparison circuit is coupled to the voltage generating circuit to receive the comparison voltage. The comparison circuit is configured to compare the comparison voltage with a reference voltage, and convert a difference between the comparison voltage and the reference voltage into a bias voltage that changes with temperature. The sensing circuit is coupled to the comparison circuit to receive the bias voltage. The sensing circuit is configured to sense the resistance state of the anti-fuse according to the bias voltage.
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