公开(公告)号：US11867730B2

公开(公告)日：2024-01-09

申请号：US17176926

申请日：2021-02-16

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Tomas Suchy ,  Miroslav Stepan ,  Pavel Hartl ,  Marek Hustava ,  Petr Kamenicky

IPC: G01R19/00 ,  H03K5/08 ,  H03K17/082 ,  G06F1/3212 ,  G06F1/3215 ,  G06F1/3234 ,  G06F1/3287

CPC classification number: G01R19/0092 ,  G06F1/3212 ,  G06F1/3215 ,  G06F1/3253 ,  G06F1/3287 ,  H03K5/08 ,  H03K17/0828

Abstract: A sensor device coupled to a communication interface bus, the sensor device includes: a current source having a first terminal operable to receive a supply current, a second terminal operable to provide a supply current, and a control terminal, wherein an operating voltage is supplied by a current through the current source; a voltage clamp having a first terminal coupled to the second terminal of the current source, a second terminal coupled to a power supply terminal, and an output terminal operable to provide a current sense signal; and a control circuit having an input terminal coupled to the output terminal of the voltage clamp and an output terminal coupled to the control terminal of the current source operable to provide an adjustment signal responsive to the current sense signal, wherein the current source is configured to adjust the current through the current source responsive to the adjustment signal.

公开(公告)号：US11549971B2

公开(公告)日：2023-01-10

申请号：US17176963

申请日：2021-02-16

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Miroslav Stepan ,  Marek Hustava ,  Tomas Suchy ,  Pavel Hartl ,  Petr Kamenicky

IPC: G06F1/3212 ,  G06F1/3234 ,  G06F1/3287 ,  G01R19/00 ,  H03K5/08 ,  H03K17/082 ,  G06F1/3215

Abstract: A sensor device coupled to a communication interface bus, the sensor device enters a low power mode in which some operations of the sensor device are suspended when the sensor device receives insufficient power over the bus, thereby significantly reducing the likelihood that digital components of the sensor device will need to be reset due to an under-voltage condition.