Invention Grant
- Patent Title: Drive voltage booster
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Application No.: US16545748Application Date: 2019-08-20
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Publication No.: US10985748B2Publication Date: 2021-04-20
- Inventor: Marco A. Davila , Bogdan T. Bucheru
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blank Rome LLP
- Main IPC: G05F1/10
- IPC: G05F1/10 ; G05F1/40 ; H02M3/07 ; H02M1/08 ; H02M3/156 ; H03K17/16 ; H02M1/00

Abstract:
This disclosure describes a gate driver with voltage boosting capabilities. In some embodiments, the gate driver may comprise a charge pump that includes capacitor(s) and switch(es). Responsive a logic low input signal, the gate driver may bypass the capacitor(s) to allow the input digital signal to drive the gating signal directly. Conversely, responsive to a logic high input signal, the gate driver may couple the capacitor(s) in series with the input digital signal to generate a boosted gating signal. In some embodiments, the gate driver may comprise an inductor-capacitor resonant circuit to create a doubled output gating signal with respect to the input digital signal. In some embodiments, the resonant gate driver may include an additional voltage boosting capability that can be selectively enabled to compensate for a voltage drop during the signal transfer from the input to the output.
Information query
IPC分类: