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公开(公告)号：US20230327666A1
公开(公告)日：2023-10-12
申请号：US18191491
申请日：2023-03-28
Inventor： Matthieu Desvergne , Marc Sabut , Emmanuel Allier , Thierry Masson
IPC: H03K17/687 , H03K17/22 , H03K17/10
CPC classification number: H03K17/6871 , H03K17/223 , H03K17/102
Abstract: In an embodiment a switch includes a first MOS transistor having its source connected to its channel-forming region and coupled with a first terminal of the switch, its drain coupled with a second terminal of the switch, and its gate connected to a first node of the switch, a diode coupling the first terminal with the first node, a capacitive element coupling a third terminal of the switch with the first node, the third terminal being configured to receive a control signal for the switch and a discharge circuit coupling the first node with the first terminal, the discharge circuit configured to conduct only when a voltage between the first node and the first terminal is greater than or equal to a threshold.
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公开(公告)号：US10447145B1
公开(公告)日：2019-10-15
申请号：US16195448
申请日：2018-11-19
Applicant: STMicroelectronics (Grenoble 2) SAS
Inventor： Danika Perrin , Valerie Carrat , Marc Sabut
Abstract: In an embodiment, a method for soft-starting an SMPS includes: asserting an enable signal; disabling an output stage of the SMPS; after asserting the enable signal, measuring a feedback voltage of the SMPS; receiving a first reference voltage at an input reference node; comparing the measured feedback voltage with the first reference voltage; and, when the measured feedback voltage is lower than the first reference voltage, storing the feedback voltage in a soft-start capacitor, connecting an output reference node to the soft-start capacitor, enabling the output stage of the SMPS, and switching a transistor of the output stage to regulate the output voltage based on the feedback voltage and a second reference voltage at the output reference node, and injecting a current into the soft-start capacitor.
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