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公开(公告)号：US11881854B2
公开(公告)日：2024-01-23
申请号：US18163273
申请日：2023-02-01
Applicant: uPI Semiconductor Corp.
Inventor： Shao-Lin Feng
CPC classification number: H03K19/018507 , H03K3/037 , H03K19/20 , H03K3/017 , H03K5/01 , H03K2005/00013
Abstract: A level shifter circuit of a driving device includes first and second pulse generators, first and second level shifters, and a determination circuit. The first pulse generator provides a first input signal according to a high-voltage signal. The first input signal includes a pulse signal having a first current level and a sustain signal having a second current level following the pulse signal. The first level shifter receives the first input signal to generate a first indication signal. The second pulse generator provides a second input signal according to the high-voltage signal. The second input signal includes the pulse signal and the sustain signal following the pulse signal. The second level shifter receives the second input signal to generate a second indication signal. The determination circuit generates a low-voltage signal according to the first indication signal and the second indication signal.
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公开(公告)号：US20230261658A1
公开(公告)日：2023-08-17
申请号：US18163273
申请日：2023-02-01
Applicant: uPI Semiconductor Corp.
Inventor： Shao-Lin Feng
IPC: H03K19/0185 , H03K3/037 , H03K19/20
CPC classification number: H03K19/018507 , H03K3/037 , H03K19/20 , H03K2005/00013
Abstract: A level shifter circuit of a driving device includes first and second pulse generators, first and second level shifters, and a determination circuit. The first pulse generator provides a first input signal according to a high-voltage signal. The first input signal includes a pulse signal having a first current level and a sustain signal having a second current level following the pulse signal. The first level shifter receives the first input signal to generate a first indication signal. The second pulse generator provides a second input signal according to the high-voltage signal. The second input signal includes the pulse signal and the sustain signal following the pulse signal. The second level shifter receives the second input signal to generate a second indication signal. The determination circuit generates a low-voltage signal according to the first indication signal and the second indication signal.
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公开(公告)号：US11728807B2
公开(公告)日：2023-08-15
申请号：US17519608
申请日：2021-11-05
Applicant: uPI semiconductor corp.
Inventor： Chia-Lung Wu , Shao-Lin Feng
CPC classification number: H03K17/56 , G01R19/0092
Abstract: A power switch circuit with current sensing is disclosed. The power switch circuit is coupled between an input voltage and an output terminal. The power switch circuit includes a power switch, a first sensing switch, an adjusting circuit and a second sensing switch. The power switch is coupled to the input voltage. The first sensing switch is coupled in series between the power switch and the output terminal. There is a first node between the first sensing switch and the power switch. The adjusting circuit is coupled to the first node. The second sensing switch is coupled between the adjusting circuit and the output terminal. A control terminal of the power switch is coupled to a first control voltage. Control terminals of the first sensing switch and the second sensing switch are coupled to a second control voltage. The second control voltage is different from the first control voltage.
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