Invention Grant
- Patent Title: Pre-charging bootstrapped FET gate
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Application No.: US17144902Application Date: 2021-01-08
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Publication No.: US11777398B2Publication Date: 2023-10-03
- Inventor: Giulio Maria Iadicicco , Michael Couleur , Siarhei Meliukh
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Erik A. Heter; Dean M. Munyon
- Main IPC: H02M1/08
- IPC: H02M1/08 ; H03K17/687 ; H02M3/158 ; H03K17/06 ; H02M1/00

Abstract:
Circuitry for bootstrapping and precharging a gate of a field-effect transistor (FET) is disclosed. In one embodiment, an apparatus includes a first transistor coupled to a switching node and further coupled to receive a supply voltage from a supply voltage node, and a second transistor coupled between the switching node and a ground node, wherein the first and second transistors are of a same type. A precharge circuit is configured to precharge a gate terminal of the first transistor to a voltage that is less than a supply voltage on the voltage supply node. The apparatus also includes a bootstrap circuit. Subsequent to precharging the gate terminal of the first transistor, the bootstrap circuit is configured to cause activation of the first transistor by charging the gate terminal to a voltage greater than the supply voltage.
Public/Granted literature
- US20220224216A1 Pre-charging Bootstrapped FET Gate Public/Granted day:2022-07-14
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