- Patent Title: Dual bootstrapping for an open-loop pulse width modulation driver
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Application No.: US16784392Application Date: 2020-02-07
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Publication No.: US11190168B2Publication Date: 2021-11-30
- Inventor: Jing Bai , Tejasvi Das , Xin Zhao , Lei Zhu , Xiaofan Fei
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: GB Edinburgh
- Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee Address: GB Edinburgh
- Agency: Jackson Walker L.L.P.
- Main IPC: H03K17/687
- IPC: H03K17/687 ; H03K3/01 ; H03K19/0185 ; H03K19/0175 ; H04R3/00

Abstract:
A driver system may include a first n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a first terminal of a supply voltage and configured to drive the output when the first n-type field-effect transistor is activated, a second n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a second terminal of the supply voltage and configured to drive the output when the second n-type field-effect transistor is activated, a high-side capacitor coupled to the output of the driver system, and a low-side capacitor coupled to the second terminal of the supply voltage, wherein the high-side capacitor and the low-side capacitor are configured to track and correct for mismatches between a first resistance of the first n-type field-effect transistor and a second resistance of the second n-type field-effect transistor.
Public/Granted literature
- US20200177167A1 DUAL BOOTSTRAPPING FOR AN OPEN-LOOP PULSE WIDTH MODULATION DRIVER Public/Granted day:2020-06-04
Information query
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