Invention Grant
- Patent Title: Power stage overdrive extender for area optimization and operation at low supply voltage
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Application No.: US16268641Application Date: 2019-02-06
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Publication No.: US10566892B1Publication Date: 2020-02-18
- Inventor: Nuno Dias
- Applicant: Dialog Semiconductor (UK) Limited
- Applicant Address: GB London
- Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee Address: GB London
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: H02M3/00
- IPC: H02M3/00 ; H02M1/08 ; H03K17/687 ; H02M3/156 ; H02M3/07

Abstract:
It is an object of one or more embodiments of the present disclosure to provide a power stage overdrive circuit, at low supply voltages, that can be enabled/disabled on the fly. The power stage overdrive circuit increases the overdrive of a power switch to allow for simple power stage architecture with high voltage PMOS and NMOS devices. The power stage overdrive circuit comprises a driver, configured to drive the power switch having a control terminal, for example a gate terminal, and a boost circuit, further comprising a boost capacitor having a first terminal coupled to a power supply, for example a battery, and a second terminal coupled to the control terminal, configured to provide an overdrive voltage to the control terminal to turn the power switch on.
Information query